!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!! !!!!! !!!!! VERIFICATION CHECK: vc-periodicity-support !!!!! !!!!! !!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Description: Check that the model supports periodic boundary conditions correctly. If the simulation box is increased by an integer factor along a periodic direction, the total energy must multiply by that factor and the forces on atoms that are periodic copies of each other must be the same. The check is performed for a randomly distorted non-periodic face-centered cubic (FCC) cube base structure. Separate configurations are tested for each species supported by the model, as well as one containing a random distribution of all species. For each configuration, all possible combinations of periodic boundary conditions are tested: TFF, FTF, FFT, TTF, TFT, TTF, TTT (where 'T' indicates periodicity along a direction, and 'F' indicates no periodicity). The verification check passes if the energy of all configurations that the model is able to compute support all periodic boundary conditions correctly. Configurations used for testing are provided as auxiliary files. Author: Ellad Tadmor ------------------------------------------------------------------------------------------------------------------------ Results for KIM Model : MEAM_LAMMPS_ChoiKimSeol_2017_CoFe__MO_179158257180_001 Supported species : Co Fe random seed = 13 lattice constant (orig) = 3.000 perturbation amplitude = 0.300 number unit cells per side = 1 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Co, PBC = TTT (Configuration in file "config-Co-TTT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=3 periodic directions, which means an increase by a factor n=2^3=8 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -6.172292891542996 2^p V(r_1,...,r_N) = -6.172292891542994 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 | 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 1 -1.22258408e+01 1.13506542e+01 1.78745509e+00 | -1.22258408e+01 1.13506542e+01 1.78745509e+00 2 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 | 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 3 3.88957985e+00 1.27753271e+01 6.49147131e+00 | 3.88957985e+00 1.27753271e+01 6.49147131e+00 4 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 | 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 5 -1.22258408e+01 1.13506542e+01 1.78745509e+00 | -1.22258408e+01 1.13506542e+01 1.78745509e+00 6 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 | 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 7 3.88957985e+00 1.27753271e+01 6.49147131e+00 | 3.88957985e+00 1.27753271e+01 6.49147131e+00 8 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 | 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 9 -1.22258408e+01 1.13506542e+01 1.78745509e+00 | -1.22258408e+01 1.13506542e+01 1.78745509e+00 10 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 | 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 11 3.88957985e+00 1.27753271e+01 6.49147131e+00 | 3.88957985e+00 1.27753271e+01 6.49147131e+00 12 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 | 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 13 -1.22258408e+01 1.13506542e+01 1.78745509e+00 | -1.22258408e+01 1.13506542e+01 1.78745509e+00 14 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 | 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 15 3.88957985e+00 1.27753271e+01 6.49147131e+00 | 3.88957985e+00 1.27753271e+01 6.49147131e+00 16 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 | 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 17 -1.22258408e+01 1.13506542e+01 1.78745509e+00 | -1.22258408e+01 1.13506542e+01 1.78745509e+00 18 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 | 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 19 3.88957985e+00 1.27753271e+01 6.49147131e+00 | 3.88957985e+00 1.27753271e+01 6.49147131e+00 20 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 | 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 21 -1.22258408e+01 1.13506542e+01 1.78745509e+00 | -1.22258408e+01 1.13506542e+01 1.78745509e+00 22 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 | 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 23 3.88957985e+00 1.27753271e+01 6.49147131e+00 | 3.88957985e+00 1.27753271e+01 6.49147131e+00 24 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 | 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 25 -1.22258408e+01 1.13506542e+01 1.78745509e+00 | -1.22258408e+01 1.13506542e+01 1.78745509e+00 26 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 | 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 27 3.88957985e+00 1.27753271e+01 6.49147131e+00 | 3.88957985e+00 1.27753271e+01 6.49147131e+00 28 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 | 5.52435383e+00 -1.55266059e+01 -5.01563847e+00 29 -1.22258408e+01 1.13506542e+01 1.78745509e+00 | -1.22258408e+01 1.13506542e+01 1.78745509e+00 30 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 | 2.81190715e+00 -8.59937542e+00 -3.26328793e+00 31 3.88957985e+00 1.27753271e+01 6.49147131e+00 | 3.88957985e+00 1.27753271e+01 6.49147131e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Co, PBC = TTF (Configuration in file "config-Co-TTF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -11.60380517389228 2^p V(r_1,...,r_N) = -11.603805173892257 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 1.05251194e+01 1.55407289e+01 -1.20974763e+01 | 1.05251194e+01 1.55407289e+01 -1.20974763e+01 1 -1.40100503e+01 -7.54866534e+00 -1.16977421e+01 | -1.40100503e+01 -7.54866534e+00 -1.16977421e+01 2 -7.04391952e+00 -5.35449200e+00 7.69932642e+00 | -7.04391952e+00 -5.35449200e+00 7.69932642e+00 3 1.05288504e+01 -2.63757154e+00 1.60958919e+01 | 1.05288504e+01 -2.63757154e+00 1.60958919e+01 4 1.05251194e+01 1.55407289e+01 -1.20974763e+01 | 1.05251194e+01 1.55407289e+01 -1.20974763e+01 5 -1.40100503e+01 -7.54866534e+00 -1.16977421e+01 | -1.40100503e+01 -7.54866534e+00 -1.16977421e+01 6 -7.04391952e+00 -5.35449200e+00 7.69932642e+00 | -7.04391952e+00 -5.35449200e+00 7.69932642e+00 7 1.05288504e+01 -2.63757154e+00 1.60958919e+01 | 1.05288504e+01 -2.63757154e+00 1.60958919e+01 8 1.05251194e+01 1.55407289e+01 -1.20974763e+01 | 1.05251194e+01 1.55407289e+01 -1.20974763e+01 9 -1.40100503e+01 -7.54866534e+00 -1.16977421e+01 | -1.40100503e+01 -7.54866534e+00 -1.16977421e+01 10 -7.04391952e+00 -5.35449200e+00 7.69932642e+00 | -7.04391952e+00 -5.35449200e+00 7.69932642e+00 11 1.05288504e+01 -2.63757154e+00 1.60958919e+01 | 1.05288504e+01 -2.63757154e+00 1.60958919e+01 12 1.05251194e+01 1.55407289e+01 -1.20974763e+01 | 1.05251194e+01 1.55407289e+01 -1.20974763e+01 13 -1.40100503e+01 -7.54866534e+00 -1.16977421e+01 | -1.40100503e+01 -7.54866534e+00 -1.16977421e+01 14 -7.04391952e+00 -5.35449200e+00 7.69932642e+00 | -7.04391952e+00 -5.35449200e+00 7.69932642e+00 15 1.05288504e+01 -2.63757154e+00 1.60958919e+01 | 1.05288504e+01 -2.63757154e+00 1.60958919e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Co, PBC = TFT (Configuration in file "config-Co-TFT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -16.72108133429947 2^p V(r_1,...,r_N) = -16.72108133429949 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 6.17131033e+00 -1.13359024e+01 -6.99129638e+00 | 6.17131033e+00 -1.13359024e+01 -6.99129638e+00 1 -9.72589645e+00 9.14669698e+00 -1.52665824e+00 | -9.72589645e+00 9.14669698e+00 -1.52665824e+00 2 -9.04661386e+00 -1.20760731e+01 3.68556007e+00 | -9.04661386e+00 -1.20760731e+01 3.68556007e+00 3 1.26012000e+01 1.42652785e+01 4.83239455e+00 | 1.26012000e+01 1.42652785e+01 4.83239455e+00 4 6.17131033e+00 -1.13359024e+01 -6.99129638e+00 | 6.17131033e+00 -1.13359024e+01 -6.99129638e+00 5 -9.72589645e+00 9.14669698e+00 -1.52665824e+00 | -9.72589645e+00 9.14669698e+00 -1.52665824e+00 6 -9.04661386e+00 -1.20760731e+01 3.68556007e+00 | -9.04661386e+00 -1.20760731e+01 3.68556007e+00 7 1.26012000e+01 1.42652785e+01 4.83239455e+00 | 1.26012000e+01 1.42652785e+01 4.83239455e+00 8 6.17131033e+00 -1.13359024e+01 -6.99129638e+00 | 6.17131033e+00 -1.13359024e+01 -6.99129638e+00 9 -9.72589645e+00 9.14669698e+00 -1.52665824e+00 | -9.72589645e+00 9.14669698e+00 -1.52665824e+00 10 -9.04661386e+00 -1.20760731e+01 3.68556007e+00 | -9.04661386e+00 -1.20760731e+01 3.68556007e+00 11 1.26012000e+01 1.42652785e+01 4.83239455e+00 | 1.26012000e+01 1.42652785e+01 4.83239455e+00 12 6.17131033e+00 -1.13359024e+01 -6.99129638e+00 | 6.17131033e+00 -1.13359024e+01 -6.99129638e+00 13 -9.72589645e+00 9.14669698e+00 -1.52665824e+00 | -9.72589645e+00 9.14669698e+00 -1.52665824e+00 14 -9.04661386e+00 -1.20760731e+01 3.68556007e+00 | -9.04661386e+00 -1.20760731e+01 3.68556007e+00 15 1.26012000e+01 1.42652785e+01 4.83239455e+00 | 1.26012000e+01 1.42652785e+01 4.83239455e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Co, PBC = TFF (Configuration in file "config-Co-TFF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -12.721178548097303 2^p V(r_1,...,r_N) = -12.721178548097296 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 6.48877426e+00 -9.97460721e+00 -7.17569023e+00 | 6.48877426e+00 -9.97460721e+00 -7.17569023e+00 1 -7.74232844e+00 8.16429029e+00 -6.61919132e+00 | -7.74232844e+00 8.16429029e+00 -6.61919132e+00 2 -6.36552998e+00 -7.95723709e+00 6.44675910e+00 | -6.36552998e+00 -7.95723709e+00 6.44675910e+00 3 7.61908417e+00 9.76755401e+00 7.34812245e+00 | 7.61908417e+00 9.76755401e+00 7.34812245e+00 4 6.48877426e+00 -9.97460721e+00 -7.17569023e+00 | 6.48877426e+00 -9.97460721e+00 -7.17569023e+00 5 -7.74232844e+00 8.16429029e+00 -6.61919132e+00 | -7.74232844e+00 8.16429029e+00 -6.61919132e+00 6 -6.36552998e+00 -7.95723709e+00 6.44675910e+00 | -6.36552998e+00 -7.95723709e+00 6.44675910e+00 7 7.61908417e+00 9.76755401e+00 7.34812245e+00 | 7.61908417e+00 9.76755401e+00 7.34812245e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Co, PBC = FTT (Configuration in file "config-Co-FTT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -16.433949635078996 2^p V(r_1,...,r_N) = -16.433949635079 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -8.62364418e+00 -2.36531811e-01 -3.02816894e+00 | -8.62364418e+00 -2.36531811e-01 -3.02816894e+00 1 9.10693048e+00 -9.40950957e+00 6.38104428e+00 | 9.10693048e+00 -9.40950957e+00 6.38104428e+00 2 9.12935378e+00 1.12029217e+01 -9.76692352e+00 | 9.12935378e+00 1.12029217e+01 -9.76692352e+00 3 -9.61264008e+00 -1.55688036e+00 6.41404819e+00 | -9.61264008e+00 -1.55688036e+00 6.41404819e+00 4 -8.62364418e+00 -2.36531811e-01 -3.02816894e+00 | -8.62364418e+00 -2.36531811e-01 -3.02816894e+00 5 9.10693048e+00 -9.40950957e+00 6.38104428e+00 | 9.10693048e+00 -9.40950957e+00 6.38104428e+00 6 9.12935378e+00 1.12029217e+01 -9.76692352e+00 | 9.12935378e+00 1.12029217e+01 -9.76692352e+00 7 -9.61264008e+00 -1.55688036e+00 6.41404819e+00 | -9.61264008e+00 -1.55688036e+00 6.41404819e+00 8 -8.62364418e+00 -2.36531811e-01 -3.02816894e+00 | -8.62364418e+00 -2.36531811e-01 -3.02816894e+00 9 9.10693048e+00 -9.40950957e+00 6.38104428e+00 | 9.10693048e+00 -9.40950957e+00 6.38104428e+00 10 9.12935378e+00 1.12029217e+01 -9.76692352e+00 | 9.12935378e+00 1.12029217e+01 -9.76692352e+00 11 -9.61264008e+00 -1.55688036e+00 6.41404819e+00 | -9.61264008e+00 -1.55688036e+00 6.41404819e+00 12 -8.62364418e+00 -2.36531811e-01 -3.02816894e+00 | -8.62364418e+00 -2.36531811e-01 -3.02816894e+00 13 9.10693048e+00 -9.40950957e+00 6.38104428e+00 | 9.10693048e+00 -9.40950957e+00 6.38104428e+00 14 9.12935378e+00 1.12029217e+01 -9.76692352e+00 | 9.12935378e+00 1.12029217e+01 -9.76692352e+00 15 -9.61264008e+00 -1.55688036e+00 6.41404819e+00 | -9.61264008e+00 -1.55688036e+00 6.41404819e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Co, PBC = FTF (Configuration in file "config-Co-FTF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -9.840126102323996 2^p V(r_1,...,r_N) = -9.840126102324 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -1.33344765e+01 -1.38725613e+00 -1.08874831e+01 | -1.33344765e+01 -1.38725613e+00 -1.08874831e+01 1 7.68564455e+00 3.72343615e+00 -8.85175334e+00 | 7.68564455e+00 3.72343615e+00 -8.85175334e+00 2 1.40634673e+01 1.07955972e+00 1.26217243e+01 | 1.40634673e+01 1.07955972e+00 1.26217243e+01 3 -8.41463539e+00 -3.41573973e+00 7.11751216e+00 | -8.41463539e+00 -3.41573973e+00 7.11751216e+00 4 -1.33344765e+01 -1.38725613e+00 -1.08874831e+01 | -1.33344765e+01 -1.38725613e+00 -1.08874831e+01 5 7.68564455e+00 3.72343615e+00 -8.85175334e+00 | 7.68564455e+00 3.72343615e+00 -8.85175334e+00 6 1.40634673e+01 1.07955972e+00 1.26217243e+01 | 1.40634673e+01 1.07955972e+00 1.26217243e+01 7 -8.41463539e+00 -3.41573973e+00 7.11751216e+00 | -8.41463539e+00 -3.41573973e+00 7.11751216e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Co, PBC = FFT (Configuration in file "config-Co-FFT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 1.4308838540051318 2^p V(r_1,...,r_N) = 1.4308838540051343 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -1.44193208e+01 -1.08566049e+01 8.68754296e+00 | -1.44193208e+01 -1.08566049e+01 8.68754296e+00 1 1.25516964e+01 1.10270153e+01 -8.27851725e+00 | 1.25516964e+01 1.10270153e+01 -8.27851725e+00 2 2.04044967e+01 -1.44223450e+01 -2.97143849e+00 | 2.04044967e+01 -1.44223450e+01 -2.97143849e+00 3 -1.85368723e+01 1.42519347e+01 2.56241278e+00 | -1.85368723e+01 1.42519347e+01 2.56241278e+00 4 -1.44193208e+01 -1.08566049e+01 8.68754296e+00 | -1.44193208e+01 -1.08566049e+01 8.68754296e+00 5 1.25516964e+01 1.10270153e+01 -8.27851725e+00 | 1.25516964e+01 1.10270153e+01 -8.27851725e+00 6 2.04044967e+01 -1.44223450e+01 -2.97143849e+00 | 2.04044967e+01 -1.44223450e+01 -2.97143849e+00 7 -1.85368723e+01 1.42519347e+01 2.56241278e+00 | -1.85368723e+01 1.42519347e+01 2.56241278e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Fe, PBC = TTT (Configuration in file "config-Fe-TTT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=3 periodic directions, which means an increase by a factor n=2^3=8 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 33.43095708776093 2^p V(r_1,...,r_N) = 33.430957087761236 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 | -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 1 3.57564635e+00 3.99062431e+00 -1.48782465e+01 | 3.57564635e+00 3.99062431e+00 -1.48782465e+01 2 4.07904157e+00 -3.88969444e+00 1.33583316e+01 | 4.07904157e+00 -3.88969444e+00 1.33583316e+01 3 -2.13573564e+00 1.58381691e+01 2.10511885e+01 | -2.13573564e+00 1.58381691e+01 2.10511885e+01 4 -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 | -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 5 3.57564635e+00 3.99062431e+00 -1.48782465e+01 | 3.57564635e+00 3.99062431e+00 -1.48782465e+01 6 4.07904157e+00 -3.88969444e+00 1.33583316e+01 | 4.07904157e+00 -3.88969444e+00 1.33583316e+01 7 -2.13573564e+00 1.58381691e+01 2.10511885e+01 | -2.13573564e+00 1.58381691e+01 2.10511885e+01 8 -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 | -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 9 3.57564635e+00 3.99062431e+00 -1.48782465e+01 | 3.57564635e+00 3.99062431e+00 -1.48782465e+01 10 4.07904157e+00 -3.88969444e+00 1.33583316e+01 | 4.07904157e+00 -3.88969444e+00 1.33583316e+01 11 -2.13573564e+00 1.58381691e+01 2.10511885e+01 | -2.13573564e+00 1.58381691e+01 2.10511885e+01 12 -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 | -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 13 3.57564635e+00 3.99062431e+00 -1.48782465e+01 | 3.57564635e+00 3.99062431e+00 -1.48782465e+01 14 4.07904157e+00 -3.88969444e+00 1.33583316e+01 | 4.07904157e+00 -3.88969444e+00 1.33583316e+01 15 -2.13573564e+00 1.58381691e+01 2.10511885e+01 | -2.13573564e+00 1.58381691e+01 2.10511885e+01 16 -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 | -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 17 3.57564635e+00 3.99062431e+00 -1.48782465e+01 | 3.57564635e+00 3.99062431e+00 -1.48782465e+01 18 4.07904157e+00 -3.88969444e+00 1.33583316e+01 | 4.07904157e+00 -3.88969444e+00 1.33583316e+01 19 -2.13573564e+00 1.58381691e+01 2.10511885e+01 | -2.13573564e+00 1.58381691e+01 2.10511885e+01 20 -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 | -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 21 3.57564635e+00 3.99062431e+00 -1.48782465e+01 | 3.57564635e+00 3.99062431e+00 -1.48782465e+01 22 4.07904157e+00 -3.88969444e+00 1.33583316e+01 | 4.07904157e+00 -3.88969444e+00 1.33583316e+01 23 -2.13573564e+00 1.58381691e+01 2.10511885e+01 | -2.13573564e+00 1.58381691e+01 2.10511885e+01 24 -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 | -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 25 3.57564635e+00 3.99062431e+00 -1.48782465e+01 | 3.57564635e+00 3.99062431e+00 -1.48782465e+01 26 4.07904157e+00 -3.88969444e+00 1.33583316e+01 | 4.07904157e+00 -3.88969444e+00 1.33583316e+01 27 -2.13573564e+00 1.58381691e+01 2.10511885e+01 | -2.13573564e+00 1.58381691e+01 2.10511885e+01 28 -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 | -5.51895227e+00 -1.59390990e+01 -1.95312736e+01 29 3.57564635e+00 3.99062431e+00 -1.48782465e+01 | 3.57564635e+00 3.99062431e+00 -1.48782465e+01 30 4.07904157e+00 -3.88969444e+00 1.33583316e+01 | 4.07904157e+00 -3.88969444e+00 1.33583316e+01 31 -2.13573564e+00 1.58381691e+01 2.10511885e+01 | -2.13573564e+00 1.58381691e+01 2.10511885e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Fe, PBC = TTF (Configuration in file "config-Fe-TTF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 2.864637918360351 2^p V(r_1,...,r_N) = 2.8646379183603994 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 8.78234012e-01 -3.22997196e+00 -1.25785998e+01 | 8.78234012e-01 -3.22997196e+00 -1.25785998e+01 1 -6.94050019e-01 5.60250775e+00 -1.50217235e+01 | -6.94050019e-01 5.60250775e+00 -1.50217235e+01 2 1.21877627e+01 -1.61552527e+01 1.44799223e+01 | 1.21877627e+01 -1.61552527e+01 1.44799223e+01 3 -1.23719467e+01 1.37827169e+01 1.31204009e+01 | -1.23719467e+01 1.37827169e+01 1.31204009e+01 4 8.78234012e-01 -3.22997196e+00 -1.25785998e+01 | 8.78234012e-01 -3.22997196e+00 -1.25785998e+01 5 -6.94050019e-01 5.60250775e+00 -1.50217235e+01 | -6.94050019e-01 5.60250775e+00 -1.50217235e+01 6 1.21877627e+01 -1.61552527e+01 1.44799223e+01 | 1.21877627e+01 -1.61552527e+01 1.44799223e+01 7 -1.23719467e+01 1.37827169e+01 1.31204009e+01 | -1.23719467e+01 1.37827169e+01 1.31204009e+01 8 8.78234012e-01 -3.22997196e+00 -1.25785998e+01 | 8.78234012e-01 -3.22997196e+00 -1.25785998e+01 9 -6.94050019e-01 5.60250775e+00 -1.50217235e+01 | -6.94050019e-01 5.60250775e+00 -1.50217235e+01 10 1.21877627e+01 -1.61552527e+01 1.44799223e+01 | 1.21877627e+01 -1.61552527e+01 1.44799223e+01 11 -1.23719467e+01 1.37827169e+01 1.31204009e+01 | -1.23719467e+01 1.37827169e+01 1.31204009e+01 12 8.78234012e-01 -3.22997196e+00 -1.25785998e+01 | 8.78234012e-01 -3.22997196e+00 -1.25785998e+01 13 -6.94050019e-01 5.60250775e+00 -1.50217235e+01 | -6.94050019e-01 5.60250775e+00 -1.50217235e+01 14 1.21877627e+01 -1.61552527e+01 1.44799223e+01 | 1.21877627e+01 -1.61552527e+01 1.44799223e+01 15 -1.23719467e+01 1.37827169e+01 1.31204009e+01 | -1.23719467e+01 1.37827169e+01 1.31204009e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Fe, PBC = TFT (Configuration in file "config-Fe-TFT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 62.23007169770988 2^p V(r_1,...,r_N) = 62.230071697709874 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -1.02706762e+01 -3.69931186e+01 -1.63790005e+01 | -1.02706762e+01 -3.69931186e+01 -1.63790005e+01 1 1.21620371e+01 2.87153273e+01 -7.22913689e+00 | 1.21620371e+01 2.87153273e+01 -7.22913689e+00 2 -1.49616766e+01 -3.11641404e+01 1.08879026e+01 | -1.49616766e+01 -3.11641404e+01 1.08879026e+01 3 1.30703157e+01 3.94419317e+01 1.27202348e+01 | 1.30703157e+01 3.94419317e+01 1.27202348e+01 4 -1.02706762e+01 -3.69931186e+01 -1.63790005e+01 | -1.02706762e+01 -3.69931186e+01 -1.63790005e+01 5 1.21620371e+01 2.87153273e+01 -7.22913689e+00 | 1.21620371e+01 2.87153273e+01 -7.22913689e+00 6 -1.49616766e+01 -3.11641404e+01 1.08879026e+01 | -1.49616766e+01 -3.11641404e+01 1.08879026e+01 7 1.30703157e+01 3.94419317e+01 1.27202348e+01 | 1.30703157e+01 3.94419317e+01 1.27202348e+01 8 -1.02706762e+01 -3.69931186e+01 -1.63790005e+01 | -1.02706762e+01 -3.69931186e+01 -1.63790005e+01 9 1.21620371e+01 2.87153273e+01 -7.22913689e+00 | 1.21620371e+01 2.87153273e+01 -7.22913689e+00 10 -1.49616766e+01 -3.11641404e+01 1.08879026e+01 | -1.49616766e+01 -3.11641404e+01 1.08879026e+01 11 1.30703157e+01 3.94419317e+01 1.27202348e+01 | 1.30703157e+01 3.94419317e+01 1.27202348e+01 12 -1.02706762e+01 -3.69931186e+01 -1.63790005e+01 | -1.02706762e+01 -3.69931186e+01 -1.63790005e+01 13 1.21620371e+01 2.87153273e+01 -7.22913689e+00 | 1.21620371e+01 2.87153273e+01 -7.22913689e+00 14 -1.49616766e+01 -3.11641404e+01 1.08879026e+01 | -1.49616766e+01 -3.11641404e+01 1.08879026e+01 15 1.30703157e+01 3.94419317e+01 1.27202348e+01 | 1.30703157e+01 3.94419317e+01 1.27202348e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Fe, PBC = TFF (Configuration in file "config-Fe-TFF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -3.409516613932949 2^p V(r_1,...,r_N) = -3.4095166139329542 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 5.28330855e+00 -1.35606911e+01 -7.51279900e+00 | 5.28330855e+00 -1.35606911e+01 -7.51279900e+00 1 -8.72605455e+00 1.07775729e+01 -1.21447597e+01 | -8.72605455e+00 1.07775729e+01 -1.21447597e+01 2 2.20756687e+00 -6.47936939e+00 7.02087533e+00 | 2.20756687e+00 -6.47936939e+00 7.02087533e+00 3 1.23517913e+00 9.26248756e+00 1.26366834e+01 | 1.23517913e+00 9.26248756e+00 1.26366834e+01 4 5.28330855e+00 -1.35606911e+01 -7.51279900e+00 | 5.28330855e+00 -1.35606911e+01 -7.51279900e+00 5 -8.72605455e+00 1.07775729e+01 -1.21447597e+01 | -8.72605455e+00 1.07775729e+01 -1.21447597e+01 6 2.20756687e+00 -6.47936939e+00 7.02087533e+00 | 2.20756687e+00 -6.47936939e+00 7.02087533e+00 7 1.23517913e+00 9.26248756e+00 1.26366834e+01 | 1.23517913e+00 9.26248756e+00 1.26366834e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Fe, PBC = FTT (Configuration in file "config-Fe-FTT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 30.562300762438927 2^p V(r_1,...,r_N) = 30.562300762438955 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -2.23828028e+01 -3.00066772e+00 -1.45234701e+01 | -2.23828028e+01 -3.00066772e+00 -1.45234701e+01 1 1.56871219e+01 -1.24397655e+01 -6.15770864e+00 | 1.56871219e+01 -1.24397655e+01 -6.15770864e+00 2 2.18549483e+01 8.84193110e+00 1.75432283e+01 | 2.18549483e+01 8.84193110e+00 1.75432283e+01 3 -1.51592674e+01 6.59850213e+00 3.13795043e+00 | -1.51592674e+01 6.59850213e+00 3.13795043e+00 4 -2.23828028e+01 -3.00066772e+00 -1.45234701e+01 | -2.23828028e+01 -3.00066772e+00 -1.45234701e+01 5 1.56871219e+01 -1.24397655e+01 -6.15770864e+00 | 1.56871219e+01 -1.24397655e+01 -6.15770864e+00 6 2.18549483e+01 8.84193110e+00 1.75432283e+01 | 2.18549483e+01 8.84193110e+00 1.75432283e+01 7 -1.51592674e+01 6.59850213e+00 3.13795043e+00 | -1.51592674e+01 6.59850213e+00 3.13795043e+00 8 -2.23828028e+01 -3.00066772e+00 -1.45234701e+01 | -2.23828028e+01 -3.00066772e+00 -1.45234701e+01 9 1.56871219e+01 -1.24397655e+01 -6.15770864e+00 | 1.56871219e+01 -1.24397655e+01 -6.15770864e+00 10 2.18549483e+01 8.84193110e+00 1.75432283e+01 | 2.18549483e+01 8.84193110e+00 1.75432283e+01 11 -1.51592674e+01 6.59850213e+00 3.13795043e+00 | -1.51592674e+01 6.59850213e+00 3.13795043e+00 12 -2.23828028e+01 -3.00066772e+00 -1.45234701e+01 | -2.23828028e+01 -3.00066772e+00 -1.45234701e+01 13 1.56871219e+01 -1.24397655e+01 -6.15770864e+00 | 1.56871219e+01 -1.24397655e+01 -6.15770864e+00 14 2.18549483e+01 8.84193110e+00 1.75432283e+01 | 2.18549483e+01 8.84193110e+00 1.75432283e+01 15 -1.51592674e+01 6.59850213e+00 3.13795043e+00 | -1.51592674e+01 6.59850213e+00 3.13795043e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Fe, PBC = FTF (Configuration in file "config-Fe-FTF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -1.007692652556258 2^p V(r_1,...,r_N) = -1.0076926525562568 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -8.71375609e+00 -1.26665485e+01 -1.63479589e+01 | -8.71375609e+00 -1.26665485e+01 -1.63479589e+01 1 1.53597214e+01 5.10318760e+00 -5.93154033e+00 | 1.53597214e+01 5.10318760e+00 -5.93154033e+00 2 8.50953373e+00 1.18603001e+00 9.16171048e+00 | 8.50953373e+00 1.18603001e+00 9.16171048e+00 3 -1.51554990e+01 6.37733085e+00 1.31177888e+01 | -1.51554990e+01 6.37733085e+00 1.31177888e+01 4 -8.71375609e+00 -1.26665485e+01 -1.63479589e+01 | -8.71375609e+00 -1.26665485e+01 -1.63479589e+01 5 1.53597214e+01 5.10318760e+00 -5.93154033e+00 | 1.53597214e+01 5.10318760e+00 -5.93154033e+00 6 8.50953373e+00 1.18603001e+00 9.16171048e+00 | 8.50953373e+00 1.18603001e+00 9.16171048e+00 7 -1.51554990e+01 6.37733085e+00 1.31177888e+01 | -1.51554990e+01 6.37733085e+00 1.31177888e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MONOATOMIC STRUCTURE -- Species = Fe, PBC = FFT (Configuration in file "config-Fe-FFT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 0.9722091618706016 2^p V(r_1,...,r_N) = 0.9722091618705978 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -1.00619802e+01 -1.53080494e+01 -6.33938722e+00 | -1.00619802e+01 -1.53080494e+01 -6.33938722e+00 1 6.24838997e+00 8.90213172e+00 -2.01640915e+00 | 6.24838997e+00 8.90213172e+00 -2.01640915e+00 2 1.99602430e+01 -1.03365508e+01 5.78313581e+00 | 1.99602430e+01 -1.03365508e+01 5.78313581e+00 3 -1.61466528e+01 1.67424685e+01 2.57266057e+00 | -1.61466528e+01 1.67424685e+01 2.57266057e+00 4 -1.00619802e+01 -1.53080494e+01 -6.33938722e+00 | -1.00619802e+01 -1.53080494e+01 -6.33938722e+00 5 6.24838997e+00 8.90213172e+00 -2.01640915e+00 | 6.24838997e+00 8.90213172e+00 -2.01640915e+00 6 1.99602430e+01 -1.03365508e+01 5.78313581e+00 | 1.99602430e+01 -1.03365508e+01 5.78313581e+00 7 -1.61466528e+01 1.67424685e+01 2.57266057e+00 | -1.61466528e+01 1.67424685e+01 2.57266057e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MIXED STRUCTURE -- Species = Co Fe, PBC = TTT (Configuration in file "config-CoFe-TTT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=3 periodic directions, which means an increase by a factor n=2^3=8 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 178.8284082639884 2^p V(r_1,...,r_N) = 178.82840826398834 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 | 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 1 -1.67366203e+01 -3.66717404e+01 4.06836127e+01 | -1.67366203e+01 -3.66717404e+01 4.06836127e+01 2 -6.93648413e+00 3.24017387e+01 -2.88068791e+01 | -6.93648413e+00 3.24017387e+01 -2.88068791e+01 3 8.18287847e+00 3.28376285e+01 2.82759005e+01 | 8.18287847e+00 3.28376285e+01 2.82759005e+01 4 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 | 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 5 -1.67366203e+01 -3.66717404e+01 4.06836127e+01 | -1.67366203e+01 -3.66717404e+01 4.06836127e+01 6 -6.93648413e+00 3.24017387e+01 -2.88068791e+01 | -6.93648413e+00 3.24017387e+01 -2.88068791e+01 7 8.18287847e+00 3.28376285e+01 2.82759005e+01 | 8.18287847e+00 3.28376285e+01 2.82759005e+01 8 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 | 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 9 -1.67366203e+01 -3.66717404e+01 4.06836127e+01 | -1.67366203e+01 -3.66717404e+01 4.06836127e+01 10 -6.93648413e+00 3.24017387e+01 -2.88068791e+01 | -6.93648413e+00 3.24017387e+01 -2.88068791e+01 11 8.18287847e+00 3.28376285e+01 2.82759005e+01 | 8.18287847e+00 3.28376285e+01 2.82759005e+01 12 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 | 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 13 -1.67366203e+01 -3.66717404e+01 4.06836127e+01 | -1.67366203e+01 -3.66717404e+01 4.06836127e+01 14 -6.93648413e+00 3.24017387e+01 -2.88068791e+01 | -6.93648413e+00 3.24017387e+01 -2.88068791e+01 15 8.18287847e+00 3.28376285e+01 2.82759005e+01 | 8.18287847e+00 3.28376285e+01 2.82759005e+01 16 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 | 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 17 -1.67366203e+01 -3.66717404e+01 4.06836127e+01 | -1.67366203e+01 -3.66717404e+01 4.06836127e+01 18 -6.93648413e+00 3.24017387e+01 -2.88068791e+01 | -6.93648413e+00 3.24017387e+01 -2.88068791e+01 19 8.18287847e+00 3.28376285e+01 2.82759005e+01 | 8.18287847e+00 3.28376285e+01 2.82759005e+01 20 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 | 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 21 -1.67366203e+01 -3.66717404e+01 4.06836127e+01 | -1.67366203e+01 -3.66717404e+01 4.06836127e+01 22 -6.93648413e+00 3.24017387e+01 -2.88068791e+01 | -6.93648413e+00 3.24017387e+01 -2.88068791e+01 23 8.18287847e+00 3.28376285e+01 2.82759005e+01 | 8.18287847e+00 3.28376285e+01 2.82759005e+01 24 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 | 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 25 -1.67366203e+01 -3.66717404e+01 4.06836127e+01 | -1.67366203e+01 -3.66717404e+01 4.06836127e+01 26 -6.93648413e+00 3.24017387e+01 -2.88068791e+01 | -6.93648413e+00 3.24017387e+01 -2.88068791e+01 27 8.18287847e+00 3.28376285e+01 2.82759005e+01 | 8.18287847e+00 3.28376285e+01 2.82759005e+01 28 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 | 1.54902259e+01 -2.85676269e+01 -4.01526341e+01 29 -1.67366203e+01 -3.66717404e+01 4.06836127e+01 | -1.67366203e+01 -3.66717404e+01 4.06836127e+01 30 -6.93648413e+00 3.24017387e+01 -2.88068791e+01 | -6.93648413e+00 3.24017387e+01 -2.88068791e+01 31 8.18287847e+00 3.28376285e+01 2.82759005e+01 | 8.18287847e+00 3.28376285e+01 2.82759005e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MIXED STRUCTURE -- Species = Co Fe, PBC = TTF (Configuration in file "config-CoFe-TTF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 3.383494338424042 2^p V(r_1,...,r_N) = 3.383494338424057 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 1.52121854e+01 1.35862476e+01 -1.47339105e+01 | 1.52121854e+01 1.35862476e+01 -1.47339105e+01 1 -2.23413891e+01 -1.14862451e+01 -1.24298158e+01 | -2.23413891e+01 -1.14862451e+01 -1.24298158e+01 2 -5.65368259e+00 -2.47814707e+00 8.53447278e+00 | -5.65368259e+00 -2.47814707e+00 8.53447278e+00 3 1.27828863e+01 3.78144554e-01 1.86292535e+01 | 1.27828863e+01 3.78144554e-01 1.86292535e+01 4 1.52121854e+01 1.35862476e+01 -1.47339105e+01 | 1.52121854e+01 1.35862476e+01 -1.47339105e+01 5 -2.23413891e+01 -1.14862451e+01 -1.24298158e+01 | -2.23413891e+01 -1.14862451e+01 -1.24298158e+01 6 -5.65368259e+00 -2.47814707e+00 8.53447278e+00 | -5.65368259e+00 -2.47814707e+00 8.53447278e+00 7 1.27828863e+01 3.78144554e-01 1.86292535e+01 | 1.27828863e+01 3.78144554e-01 1.86292535e+01 8 1.52121854e+01 1.35862476e+01 -1.47339105e+01 | 1.52121854e+01 1.35862476e+01 -1.47339105e+01 9 -2.23413891e+01 -1.14862451e+01 -1.24298158e+01 | -2.23413891e+01 -1.14862451e+01 -1.24298158e+01 10 -5.65368259e+00 -2.47814707e+00 8.53447278e+00 | -5.65368259e+00 -2.47814707e+00 8.53447278e+00 11 1.27828863e+01 3.78144554e-01 1.86292535e+01 | 1.27828863e+01 3.78144554e-01 1.86292535e+01 12 1.52121854e+01 1.35862476e+01 -1.47339105e+01 | 1.52121854e+01 1.35862476e+01 -1.47339105e+01 13 -2.23413891e+01 -1.14862451e+01 -1.24298158e+01 | -2.23413891e+01 -1.14862451e+01 -1.24298158e+01 14 -5.65368259e+00 -2.47814707e+00 8.53447278e+00 | -5.65368259e+00 -2.47814707e+00 8.53447278e+00 15 1.27828863e+01 3.78144554e-01 1.86292535e+01 | 1.27828863e+01 3.78144554e-01 1.86292535e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MIXED STRUCTURE -- Species = Co Fe, PBC = TFT (Configuration in file "config-CoFe-TFT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -10.853581760256137 2^p V(r_1,...,r_N) = -10.853581760256137 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 5.25480536e+00 -1.12876907e+01 1.70329783e+00 | 5.25480536e+00 -1.12876907e+01 1.70329783e+00 1 7.82627717e-01 1.09674723e+01 -2.69690334e+00 | 7.82627717e-01 1.09674723e+01 -2.69690334e+00 2 -2.93214615e+00 -1.42391896e+01 4.94802804e+00 | -2.93214615e+00 -1.42391896e+01 4.94802804e+00 3 -3.10528692e+00 1.45594081e+01 -3.95442252e+00 | -3.10528692e+00 1.45594081e+01 -3.95442252e+00 4 5.25480536e+00 -1.12876907e+01 1.70329783e+00 | 5.25480536e+00 -1.12876907e+01 1.70329783e+00 5 7.82627717e-01 1.09674723e+01 -2.69690334e+00 | 7.82627717e-01 1.09674723e+01 -2.69690334e+00 6 -2.93214615e+00 -1.42391896e+01 4.94802804e+00 | -2.93214615e+00 -1.42391896e+01 4.94802804e+00 7 -3.10528692e+00 1.45594081e+01 -3.95442252e+00 | -3.10528692e+00 1.45594081e+01 -3.95442252e+00 8 5.25480536e+00 -1.12876907e+01 1.70329783e+00 | 5.25480536e+00 -1.12876907e+01 1.70329783e+00 9 7.82627717e-01 1.09674723e+01 -2.69690334e+00 | 7.82627717e-01 1.09674723e+01 -2.69690334e+00 10 -2.93214615e+00 -1.42391896e+01 4.94802804e+00 | -2.93214615e+00 -1.42391896e+01 4.94802804e+00 11 -3.10528692e+00 1.45594081e+01 -3.95442252e+00 | -3.10528692e+00 1.45594081e+01 -3.95442252e+00 12 5.25480536e+00 -1.12876907e+01 1.70329783e+00 | 5.25480536e+00 -1.12876907e+01 1.70329783e+00 13 7.82627717e-01 1.09674723e+01 -2.69690334e+00 | 7.82627717e-01 1.09674723e+01 -2.69690334e+00 14 -2.93214615e+00 -1.42391896e+01 4.94802804e+00 | -2.93214615e+00 -1.42391896e+01 4.94802804e+00 15 -3.10528692e+00 1.45594081e+01 -3.95442252e+00 | -3.10528692e+00 1.45594081e+01 -3.95442252e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MIXED STRUCTURE -- Species = Co Fe, PBC = TFF (Configuration in file "config-CoFe-TFF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 2.615008407687791 2^p V(r_1,...,r_N) = 2.6150084076877955 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -5.64559594e+00 -2.07234408e+01 -2.72189014e+01 | -5.64559594e+00 -2.07234408e+01 -2.72189014e+01 1 2.91938196e+00 9.57728454e+00 -1.15866781e+01 | 2.91938196e+00 9.57728454e+00 -1.15866781e+01 2 7.63822315e+00 -9.79046394e+00 1.68711796e+01 | 7.63822315e+00 -9.79046394e+00 1.68711796e+01 3 -4.91200917e+00 2.09366202e+01 2.19343999e+01 | -4.91200917e+00 2.09366202e+01 2.19343999e+01 4 -5.64559594e+00 -2.07234408e+01 -2.72189014e+01 | -5.64559594e+00 -2.07234408e+01 -2.72189014e+01 5 2.91938196e+00 9.57728454e+00 -1.15866781e+01 | 2.91938196e+00 9.57728454e+00 -1.15866781e+01 6 7.63822315e+00 -9.79046394e+00 1.68711796e+01 | 7.63822315e+00 -9.79046394e+00 1.68711796e+01 7 -4.91200917e+00 2.09366202e+01 2.19343999e+01 | -4.91200917e+00 2.09366202e+01 2.19343999e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MIXED STRUCTURE -- Species = Co Fe, PBC = FTT (Configuration in file "config-CoFe-FTT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=2 periodic directions, which means an increase by a factor n=2^2=4 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = 75.2628702697122 2^p V(r_1,...,r_N) = 75.26287026971218 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -2.57054706e+01 2.42294784e+00 2.21670422e+01 | -2.57054706e+01 2.42294784e+00 2.21670422e+01 1 2.92776856e+01 -1.95882516e+01 3.19387494e+01 | 2.92776856e+01 -1.95882516e+01 3.19387494e+01 2 2.72998317e+01 2.08170588e+01 -2.75219195e+01 | 2.72998317e+01 2.08170588e+01 -2.75219195e+01 3 -3.08720467e+01 -3.65175499e+00 -2.65838721e+01 | -3.08720467e+01 -3.65175499e+00 -2.65838721e+01 4 -2.57054706e+01 2.42294784e+00 2.21670422e+01 | -2.57054706e+01 2.42294784e+00 2.21670422e+01 5 2.92776856e+01 -1.95882516e+01 3.19387494e+01 | 2.92776856e+01 -1.95882516e+01 3.19387494e+01 6 2.72998317e+01 2.08170588e+01 -2.75219195e+01 | 2.72998317e+01 2.08170588e+01 -2.75219195e+01 7 -3.08720467e+01 -3.65175499e+00 -2.65838721e+01 | -3.08720467e+01 -3.65175499e+00 -2.65838721e+01 8 -2.57054706e+01 2.42294784e+00 2.21670422e+01 | -2.57054706e+01 2.42294784e+00 2.21670422e+01 9 2.92776856e+01 -1.95882516e+01 3.19387494e+01 | 2.92776856e+01 -1.95882516e+01 3.19387494e+01 10 2.72998317e+01 2.08170588e+01 -2.75219195e+01 | 2.72998317e+01 2.08170588e+01 -2.75219195e+01 11 -3.08720467e+01 -3.65175499e+00 -2.65838721e+01 | -3.08720467e+01 -3.65175499e+00 -2.65838721e+01 12 -2.57054706e+01 2.42294784e+00 2.21670422e+01 | -2.57054706e+01 2.42294784e+00 2.21670422e+01 13 2.92776856e+01 -1.95882516e+01 3.19387494e+01 | 2.92776856e+01 -1.95882516e+01 3.19387494e+01 14 2.72998317e+01 2.08170588e+01 -2.75219195e+01 | 2.72998317e+01 2.08170588e+01 -2.75219195e+01 15 -3.08720467e+01 -3.65175499e+00 -2.65838721e+01 | -3.08720467e+01 -3.65175499e+00 -2.65838721e+01 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MIXED STRUCTURE -- Species = Co Fe, PBC = FTF (Configuration in file "config-CoFe-FTF.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -12.07010037540845 2^p V(r_1,...,r_N) = -12.070100375408453 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -9.93415315e+00 -1.80630562e+00 -6.15694713e+00 | -9.93415315e+00 -1.80630562e+00 -6.15694713e+00 1 5.98793916e+00 5.98248390e+00 -8.91335508e+00 | 5.98793916e+00 5.98248390e+00 -8.91335508e+00 2 9.84084584e+00 -2.85004041e+00 1.29206331e+01 | 9.84084584e+00 -2.85004041e+00 1.29206331e+01 3 -5.89463185e+00 -1.32613788e+00 2.14966909e+00 | -5.89463185e+00 -1.32613788e+00 2.14966909e+00 4 -9.93415315e+00 -1.80630562e+00 -6.15694713e+00 | -9.93415315e+00 -1.80630562e+00 -6.15694713e+00 5 5.98793916e+00 5.98248390e+00 -8.91335508e+00 | 5.98793916e+00 5.98248390e+00 -8.91335508e+00 6 9.84084584e+00 -2.85004041e+00 1.29206331e+01 | 9.84084584e+00 -2.85004041e+00 1.29206331e+01 7 -5.89463185e+00 -1.32613788e+00 2.14966909e+00 | -5.89463185e+00 -1.32613788e+00 2.14966909e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ MIXED STRUCTURE -- Species = Co Fe, PBC = FFT (Configuration in file "config-CoFe-FFT.xyz") ------------------------------------------------------------------------------------------------------------------------ The system is doubled in p=1 periodic directions, which means an increase by a factor n=2^1=2 in the number of atoms and in the energy. Energy requirement: V(DBL_p(r_1,...,r_N)) = (2^p) V(r_1,...,r_N), where r_i is the position of atom i, V is the potential energy, and DBL_p is an operator that doubles the configuration in p periodic directions. V(DBL_p(r_1,...,r_N)) = -10.080557825780348 2^p V(r_1,...,r_N) = -10.080557825780346 Forces requirement: f_k(DBL_p(r_1,...,r_N)) = f_(k % N)(r_1,...,r_N), where r_i is the position of atom i, f_k is the force on atom k (where k runs from 1 to the number of atoms in the doubled configuration), DBL_p doubles the configuration in p periodic directions, N is the number of atoms in the original configuration, and % is the modulo operator. k f_k(DBL_p(r_1,...,r_N)) f_(k % N)(r_1,...,r_N) ------------------------------------------------------------------------------------------------------------------------ 0 -6.90054185e+00 -8.32696455e+00 -4.21116127e+00 | -6.90054185e+00 -8.32696455e+00 -4.21116127e+00 1 7.80041087e+00 1.07564544e+01 -7.31862247e+00 | 7.80041087e+00 1.07564544e+01 -7.31862247e+00 2 7.64481894e+00 -1.46400506e+01 8.62431475e+00 | 7.64481894e+00 -1.46400506e+01 8.62431475e+00 3 -8.54468796e+00 1.22105607e+01 2.90546899e+00 | -8.54468796e+00 1.22105607e+01 2.90546899e+00 4 -6.90054185e+00 -8.32696455e+00 -4.21116127e+00 | -6.90054185e+00 -8.32696455e+00 -4.21116127e+00 5 7.80041087e+00 1.07564544e+01 -7.31862247e+00 | 7.80041087e+00 1.07564544e+01 -7.31862247e+00 6 7.64481894e+00 -1.46400506e+01 8.62431475e+00 | 7.64481894e+00 -1.46400506e+01 8.62431475e+00 7 -8.54468796e+00 1.22105607e+01 2.90546899e+00 | -8.54468796e+00 1.22105607e+01 2.90546899e+00 ------------------------------------------------------------------------------------------------------------------------ PASS: Energies and forces are the same to within a relative error of 1e-08 ------------------------------------------------------------------------------------------------------------------------ ======================================================================================================================== ======================================================================================================================== To pass this verification check the model must correctly support periodic boundary conditions for all configurations it was able to compute. Grade: P Comment: Periodic boundary conditions were correctly supported for all configurations that the model was able to compute.