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#include <iostream> |
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#include <cstdlib> |
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#ifdef IS_MPI |
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#include "mpiSimulation.hpp" |
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#include <unistd.h> |
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#endif //is_mpi |
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|
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#include "Integrator.hpp" |
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#include "Thermo.hpp" |
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#include "ReadWrite.hpp" |
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#include "ForceFields.hpp" |
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#include "ExtendedSystem.hpp" |
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#include "simError.h" |
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extern "C"{ |
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|
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void v_constrain_a_( double &dt, int &n_atoms, double* mass, |
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double* Rx, double* Ry, double* Rz, |
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double* Vx, double* Vy, double* Vz, |
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double* Fx, double* Fy, double* Fz, |
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int &n_constrained, double *constr_sqr, |
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int* constr_i, int* constr_j, |
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double &box_x, double &box_y, double &box_z ); |
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|
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void v_constrain_b_( double &dt, int &n_atoms, double* mass, |
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double* Rx, double* Ry, double* Rz, |
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double* Vx, double* Vy, double* Vz, |
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double* Fx, double* Fy, double* Fz, |
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double &Kinetic, |
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int &n_constrained, double *constr_sqr, |
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int* constr_i, int* constr_j, |
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double &box_x, double &box_y, double &box_z ); |
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} |
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|
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|
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|
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Symplectic::Symplectic( SimInfo* the_entry_plug, ForceFields* the_ff, |
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ExtendedSystem* the_es ){ |
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entry_plug = the_entry_plug; |
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Integrator::Integrator( SimInfo* theInfo, ForceFields* the_ff ){ |
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|
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info = theInfo; |
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myFF = the_ff; |
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myES = the_es; |
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isFirst = 1; |
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|
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molecules = entry_plug->molecules; |
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nMols = entry_plug->n_mol; |
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molecules = info->molecules; |
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nMols = info->n_mol; |
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|
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// give a little love back to the SimInfo object |
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|
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if( entry_plug->the_integrator != NULL ) delete entry_plug->the_integrator; |
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entry_plug->the_integrator = this; |
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if( info->the_integrator != NULL ) delete info->the_integrator; |
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info->the_integrator = this; |
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|
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// grab the masses |
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nAtoms = info->n_atoms; |
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|
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mass = new double[entry_plug->n_atoms]; |
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for(int i = 0; i < entry_plug->n_atoms; i++){ |
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mass[i] = entry_plug->atoms[i]->getMass(); |
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} |
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|
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// check for constraints |
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|
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constrainedA = NULL; |
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constrainedB = NULL; |
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constrainedDsqr = NULL; |
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moving = NULL; |
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moved = NULL; |
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prePos = NULL; |
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|
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nConstrained = 0; |
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|
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is_constrained = 0; |
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checkConstraints(); |
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} |
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|
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Integrator::~Integrator() { |
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|
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if( nConstrained ){ |
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delete[] constrainedA; |
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delete[] constrainedB; |
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delete[] constrainedDsqr; |
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delete[] moving; |
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delete[] moved; |
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delete[] prePos; |
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k |
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} |
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|
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} |
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|
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void Integrator::checkConstraints( void ){ |
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|
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|
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isConstrained = 0; |
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|
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Constraint *temp_con; |
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Constraint *dummy_plug; |
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temp_con = new Constraint[entry_plug->n_SRI]; |
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n_constrained = 0; |
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temp_con = new Constraint[info->n_SRI]; |
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nConstrained = 0; |
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int constrained = 0; |
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|
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SRI** theArray; |
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if(constrained){ |
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dummy_plug = theArray[j]->get_constraint(); |
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temp_con[n_constrained].set_a( dummy_plug->get_a() ); |
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temp_con[n_constrained].set_b( dummy_plug->get_b() ); |
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temp_con[n_constrained].set_dsqr( dummy_plug->get_dsqr() ); |
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temp_con[nConstrained].set_a( dummy_plug->get_a() ); |
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temp_con[nConstrained].set_b( dummy_plug->get_b() ); |
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temp_con[nConstrained].set_dsqr( dummy_plug->get_dsqr() ); |
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|
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n_constrained++; |
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nConstrained++; |
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constrained = 0; |
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} |
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} |
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if(constrained){ |
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|
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dummy_plug = theArray[j]->get_constraint(); |
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temp_con[n_constrained].set_a( dummy_plug->get_a() ); |
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temp_con[n_constrained].set_b( dummy_plug->get_b() ); |
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temp_con[n_constrained].set_dsqr( dummy_plug->get_dsqr() ); |
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temp_con[nConstrained].set_a( dummy_plug->get_a() ); |
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temp_con[nConstrained].set_b( dummy_plug->get_b() ); |
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temp_con[nConstrained].set_dsqr( dummy_plug->get_dsqr() ); |
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|
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n_constrained++; |
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nConstrained++; |
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constrained = 0; |
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} |
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} |
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if(constrained){ |
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dummy_plug = theArray[j]->get_constraint(); |
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temp_con[n_constrained].set_a( dummy_plug->get_a() ); |
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temp_con[n_constrained].set_b( dummy_plug->get_b() ); |
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temp_con[n_constrained].set_dsqr( dummy_plug->get_dsqr() ); |
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temp_con[nConstrained].set_a( dummy_plug->get_a() ); |
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temp_con[nConstrained].set_b( dummy_plug->get_b() ); |
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temp_con[nConstrained].set_dsqr( dummy_plug->get_dsqr() ); |
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n_constrained++; |
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nConstrained++; |
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constrained = 0; |
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} |
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} |
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} |
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if(n_constrained > 0){ |
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if(nConstrained > 0){ |
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is_constrained = 1; |
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constrained_i = new int[n_constrained]; |
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constrained_j = new int[n_constrained]; |
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constrained_dsqr = new double[n_constrained]; |
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isConstrained = 1; |
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|
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if(constrainedA != NULL ) delete[] constrainedA; |
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if(constrainedB != NULL ) delete[] constrainedB; |
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if(constrainedDsqr != NULL ) delete[] constrainedDsqr; |
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|
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constrainedA = new int[nConstrained]; |
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constrainedB = new int[nConstrained]; |
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constrainedDsqr = new double[nConstrained]; |
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|
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for( int i = 0; i < n_constrained; i++){ |
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for( int i = 0; i < nConstrained; i++){ |
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|
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/* add 1 to the index for the fortran arrays. */ |
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|
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constrained_i[i] = temp_con[i].get_a() + 1; |
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constrained_j[i] = temp_con[i].get_b() + 1; |
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constrained_dsqr[i] = temp_con[i].get_dsqr(); |
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constrainedA[i] = temp_con[i].get_a(); |
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constrainedB[i] = temp_con[i].get_b(); |
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constrainedDsqr[i] = temp_con[i].get_dsqr(); |
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} |
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|
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|
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// save oldAtoms to check for lode balanceing later on. |
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oldAtoms = nAtoms; |
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|
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moving = new int[nAtoms]; |
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moved = new int[nAtoms]; |
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|
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prePos = new double[nAtoms*3]; |
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} |
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delete[] temp_con; |
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} |
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Symplectic::~Symplectic() { |
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|
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if( n_constrained ){ |
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delete[] constrained_i; |
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delete[] constrained_j; |
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delete[] constrained_dsqr; |
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} |
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|
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} |
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void Integrator::integrate( void ){ |
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void Symplectic::integrate( void ){ |
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|
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const double e_convert = 4.184e-4; // converts kcal/mol -> amu*A^2/fs^2 |
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|
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int i, j; // loop counters |
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int nAtoms = entry_plug->n_atoms; // the number of atoms |
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double kE = 0.0; // the kinetic energy |
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double rot_kE; |
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double trans_kE; |
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int time; |
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|
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double dt = entry_plug->dt; |
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double runTime = entry_plug->run_time; |
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double sampleTime = entry_plug->sampleTime; |
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double statusTime = entry_plug->statusTime; |
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double thermalTime = entry_plug->thermalTime; |
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double dt = info->dt; |
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double runTime = info->run_time; |
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double sampleTime = info->sampleTime; |
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double statusTime = info->statusTime; |
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double thermalTime = info->thermalTime; |
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|
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int n_loops = (int)( runTime / dt ); |
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int sample_n = (int)( sampleTime / dt ); |
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int vel_n = (int)( thermalTime / dt ); |
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|
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int calcPot, calcStress; |
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int isError; |
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|
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Thermo *tStats; |
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StatWriter* e_out; |
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DumpWriter* dump_out; |
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tStats = new Thermo( info ); |
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e_out = new StatWriter( info ); |
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dump_out = new DumpWriter( info ); |
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|
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tStats = new Thermo( entry_plug ); |
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e_out = new StatWriter( entry_plug ); |
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dump_out = new DumpWriter( entry_plug ); |
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|
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Atom** atoms = entry_plug->atoms; |
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Atom** atoms = info->atoms; |
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DirectionalAtom* dAtom; |
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dt2 = 0.5 * dt; |
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|
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// initialize the forces the before the first step |
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// initialize the forces before the first step |
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|
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myFF->doForces(1,1); |
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|
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if( entry_plug->setTemp ){ |
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> |
if( info->setTemp ){ |
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|
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tStats->velocitize(); |
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} |
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calcPot = 0; |
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|
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if (!strcasecmp( entry_plug->ensemble, "NPT")) { |
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calcStress = 1; |
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} else { |
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calcStress = 0; |
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} |
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> |
for( tl=0; tl<nLoops; tl++){ |
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|
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if( n_constrained ){ |
218 |
< |
|
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double *Rx = new double[nAtoms]; |
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double *Ry = new double[nAtoms]; |
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double *Rz = new double[nAtoms]; |
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> |
integrateStep( calcPot, calcStress ); |
218 |
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|
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> |
time = tl + 1; |
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|
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double *Vx = new double[nAtoms]; |
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double *Vy = new double[nAtoms]; |
223 |
< |
double *Vz = new double[nAtoms]; |
224 |
< |
|
225 |
< |
double *Fx = new double[nAtoms]; |
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< |
double *Fy = new double[nAtoms]; |
227 |
< |
double *Fz = new double[nAtoms]; |
228 |
< |
|
221 |
> |
if( info->setTemp ){ |
222 |
> |
if( !(time % vel_n) ) tStats->velocitize(); |
223 |
> |
} |
224 |
> |
if( !(time % sample_n) ) dump_out->writeDump( time * dt ); |
225 |
> |
if( !((time+1) % status_n) ) { |
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> |
calcPot = 1; |
227 |
> |
calcStress = 1; |
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} |
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> |
if( !(time % status_n) ){ |
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> |
e_out->writeStat( time * dt ); |
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> |
calcPot = 0; |
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> |
if (!strcasecmp(info->ensemble, "NPT")) calcStress = 1; |
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> |
else calcStress = 0; |
234 |
> |
} |
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|
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< |
for( tl=0; tl < n_loops; tl++ ){ |
236 |
> |
|
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> |
} |
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|
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< |
if (!strcasecmp( entry_plug->ensemble, "NVT")) |
240 |
< |
myES->NoseHooverNVT( dt / 2.0 , tStats->getKinetic() ); |
241 |
< |
|
242 |
< |
for( j=0; j<nAtoms; j++ ){ |
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> |
dump_out->writeFinal(); |
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|
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Rx[j] = atoms[j]->getX(); |
242 |
< |
Ry[j] = atoms[j]->getY(); |
243 |
< |
Rz[j] = atoms[j]->getZ(); |
241 |
> |
delete dump_out; |
242 |
> |
delete e_out; |
243 |
> |
} |
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|
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Vx[j] = atoms[j]->get_vx(); |
249 |
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Vy[j] = atoms[j]->get_vy(); |
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Vz[j] = atoms[j]->get_vz(); |
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|
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< |
Fx[j] = atoms[j]->getFx(); |
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< |
Fy[j] = atoms[j]->getFy(); |
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< |
Fz[j] = atoms[j]->getFz(); |
246 |
> |
void Integrator::moveA( void ){ |
247 |
> |
|
248 |
> |
int i,j,k; |
249 |
> |
int atomIndex, aMatIndex; |
250 |
> |
DirectionalAtom* dAtom; |
251 |
> |
double Tb[3]; |
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> |
double ji[3]; |
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|
|
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< |
} |
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< |
|
256 |
< |
v_constrain_a_( dt, nAtoms, mass, Rx, Ry, Rz, Vx, Vy, Vz, |
257 |
< |
Fx, Fy, Fz, |
258 |
< |
n_constrained, constrained_dsqr, |
259 |
< |
constrained_i, constrained_j, |
260 |
< |
entry_plug->box_x, |
263 |
< |
entry_plug->box_y, |
264 |
< |
entry_plug->box_z ); |
265 |
< |
|
266 |
< |
for( j=0; j<nAtoms; j++ ){ |
254 |
> |
for( i=0; i<nAtoms; i++ ){ |
255 |
> |
atomIndex = i * 3; |
256 |
> |
aMatIndex = i * 9; |
257 |
> |
|
258 |
> |
// velocity half step |
259 |
> |
for( j=atomIndex; j<(atomIndex+3); j++ ) |
260 |
> |
vel[j] += ( dt2 * frc[j] / atoms[i]->getMass() ) * eConvert; |
261 |
|
|
262 |
< |
atoms[j]->setX(Rx[j]); |
263 |
< |
atoms[j]->setY(Ry[j]); |
264 |
< |
atoms[j]->setZ(Rz[j]); |
271 |
< |
|
272 |
< |
atoms[j]->set_vx(Vx[j]); |
273 |
< |
atoms[j]->set_vy(Vy[j]); |
274 |
< |
atoms[j]->set_vz(Vz[j]); |
275 |
< |
} |
262 |
> |
// position whole step |
263 |
> |
for( j=atomIndex; j<(atomIndex+3); j++ ) |
264 |
> |
pos[j] += dt * vel[j]; |
265 |
|
|
266 |
+ |
|
267 |
+ |
if( atoms[i]->isDirectional() ){ |
268 |
|
|
269 |
< |
for( i=0; i<nAtoms; i++ ){ |
279 |
< |
if( atoms[i]->isDirectional() ){ |
280 |
< |
|
281 |
< |
dAtom = (DirectionalAtom *)atoms[i]; |
269 |
> |
dAtom = (DirectionalAtom *)atoms[i]; |
270 |
|
|
271 |
< |
// get and convert the torque to body frame |
284 |
< |
|
285 |
< |
Tb[0] = dAtom->getTx(); |
286 |
< |
Tb[1] = dAtom->getTy(); |
287 |
< |
Tb[2] = dAtom->getTz(); |
288 |
< |
|
289 |
< |
dAtom->lab2Body( Tb ); |
290 |
< |
|
291 |
< |
// get the angular momentum, and propagate a half step |
292 |
< |
|
293 |
< |
ji[0] = dAtom->getJx() + ( dt2 * Tb[0] ) * e_convert; |
294 |
< |
ji[1] = dAtom->getJy() + ( dt2 * Tb[1] ) * e_convert; |
295 |
< |
ji[2] = dAtom->getJz() + ( dt2 * Tb[2] ) * e_convert; |
296 |
< |
|
297 |
< |
// get the atom's rotation matrix |
298 |
< |
|
299 |
< |
A[0][0] = dAtom->getAxx(); |
300 |
< |
A[0][1] = dAtom->getAxy(); |
301 |
< |
A[0][2] = dAtom->getAxz(); |
302 |
< |
|
303 |
< |
A[1][0] = dAtom->getAyx(); |
304 |
< |
A[1][1] = dAtom->getAyy(); |
305 |
< |
A[1][2] = dAtom->getAyz(); |
306 |
< |
|
307 |
< |
A[2][0] = dAtom->getAzx(); |
308 |
< |
A[2][1] = dAtom->getAzy(); |
309 |
< |
A[2][2] = dAtom->getAzz(); |
310 |
< |
|
311 |
< |
|
312 |
< |
// use the angular velocities to propagate the rotation matrix a |
313 |
< |
// full time step |
314 |
< |
|
315 |
< |
|
316 |
< |
angle = dt2 * ji[0] / dAtom->getIxx(); |
317 |
< |
this->rotate( 1, 2, angle, ji, A ); // rotate about the x-axis |
318 |
< |
|
319 |
< |
angle = dt2 * ji[1] / dAtom->getIyy(); |
320 |
< |
this->rotate( 2, 0, angle, ji, A ); // rotate about the y-axis |
321 |
< |
|
322 |
< |
angle = dt * ji[2] / dAtom->getIzz(); |
323 |
< |
this->rotate( 0, 1, angle, ji, A ); // rotate about the z-axis |
324 |
< |
|
325 |
< |
angle = dt2 * ji[1] / dAtom->getIyy(); |
326 |
< |
this->rotate( 2, 0, angle, ji, A ); // rotate about the y-axis |
327 |
< |
|
328 |
< |
angle = dt2 * ji[0] / dAtom->getIxx(); |
329 |
< |
this->rotate( 1, 2, angle, ji, A ); // rotate about the x-axis |
330 |
< |
|
331 |
< |
|
332 |
< |
dAtom->setA( A ); |
333 |
< |
dAtom->setJx( ji[0] ); |
334 |
< |
dAtom->setJy( ji[1] ); |
335 |
< |
dAtom->setJz( ji[2] ); |
336 |
< |
} |
337 |
< |
} |
271 |
> |
// get and convert the torque to body frame |
272 |
|
|
273 |
< |
// calculate the forces |
273 |
> |
Tb[0] = dAtom->getTx(); |
274 |
> |
Tb[1] = dAtom->getTy(); |
275 |
> |
Tb[2] = dAtom->getTz(); |
276 |
|
|
277 |
< |
myFF->doForces(calcPot, calcStress); |
277 |
> |
dAtom->lab2Body( Tb ); |
278 |
|
|
279 |
< |
// move b |
344 |
< |
|
345 |
< |
for( j=0; j<nAtoms; j++ ){ |
346 |
< |
|
347 |
< |
Rx[j] = atoms[j]->getX(); |
348 |
< |
Ry[j] = atoms[j]->getY(); |
349 |
< |
Rz[j] = atoms[j]->getZ(); |
350 |
< |
|
351 |
< |
Vx[j] = atoms[j]->get_vx(); |
352 |
< |
Vy[j] = atoms[j]->get_vy(); |
353 |
< |
Vz[j] = atoms[j]->get_vz(); |
354 |
< |
|
355 |
< |
Fx[j] = atoms[j]->getFx(); |
356 |
< |
Fy[j] = atoms[j]->getFy(); |
357 |
< |
Fz[j] = atoms[j]->getFz(); |
358 |
< |
} |
359 |
< |
|
360 |
< |
v_constrain_b_( dt, nAtoms, mass, Rx, Ry, Rz, Vx, Vy, Vz, |
361 |
< |
Fx, Fy, Fz, |
362 |
< |
kE, n_constrained, constrained_dsqr, |
363 |
< |
constrained_i, constrained_j, |
364 |
< |
entry_plug->box_x, |
365 |
< |
entry_plug->box_y, |
366 |
< |
entry_plug->box_z ); |
279 |
> |
// get the angular momentum, and propagate a half step |
280 |
|
|
281 |
< |
for( j=0; j<nAtoms; j++ ){ |
282 |
< |
|
283 |
< |
atoms[j]->setX(Rx[j]); |
371 |
< |
atoms[j]->setY(Ry[j]); |
372 |
< |
atoms[j]->setZ(Rz[j]); |
373 |
< |
|
374 |
< |
atoms[j]->set_vx(Vx[j]); |
375 |
< |
atoms[j]->set_vy(Vy[j]); |
376 |
< |
atoms[j]->set_vz(Vz[j]); |
377 |
< |
} |
281 |
> |
ji[0] = dAtom->getJx() + ( dt2 * Tb[0] ) * eConvert; |
282 |
> |
ji[1] = dAtom->getJy() + ( dt2 * Tb[1] ) * eConvert; |
283 |
> |
ji[2] = dAtom->getJz() + ( dt2 * Tb[2] ) * eConvert; |
284 |
|
|
285 |
< |
for( i=0; i< nAtoms; i++ ){ |
285 |
> |
// use the angular velocities to propagate the rotation matrix a |
286 |
> |
// full time step |
287 |
> |
|
288 |
> |
// rotate about the x-axis |
289 |
> |
angle = dt2 * ji[0] / dAtom->getIxx(); |
290 |
> |
this->rotate( 1, 2, angle, ji, &aMat[aMatIndex] ); |
291 |
> |
|
292 |
> |
// rotate about the y-axis |
293 |
> |
angle = dt2 * ji[1] / dAtom->getIyy(); |
294 |
> |
this->rotate( 2, 0, angle, ji, &aMat[aMatIndex] ); |
295 |
> |
|
296 |
> |
// rotate about the z-axis |
297 |
> |
angle = dt * ji[2] / dAtom->getIzz(); |
298 |
> |
this->rotate( 0, 1, angle, ji, &aMat[aMatIndex] ); |
299 |
> |
|
300 |
> |
// rotate about the y-axis |
301 |
> |
angle = dt2 * ji[1] / dAtom->getIyy(); |
302 |
> |
this->rotate( 2, 0, angle, ji, &aMat[aMatIndex] ); |
303 |
> |
|
304 |
> |
// rotate about the x-axis |
305 |
> |
angle = dt2 * ji[0] / dAtom->getIxx(); |
306 |
> |
this->rotate( 1, 2, angle, ji, &aMat[aMatIndex] ); |
307 |
> |
|
308 |
> |
dAtom->setJx( ji[0] ); |
309 |
> |
dAtom->setJy( ji[1] ); |
310 |
> |
dAtom->setJz( ji[2] ); |
311 |
> |
} |
312 |
> |
|
313 |
> |
} |
314 |
> |
} |
315 |
|
|
381 |
– |
if( atoms[i]->isDirectional() ){ |
316 |
|
|
317 |
< |
dAtom = (DirectionalAtom *)atoms[i]; |
318 |
< |
|
319 |
< |
// get and convert the torque to body frame |
320 |
< |
|
321 |
< |
Tb[0] = dAtom->getTx(); |
322 |
< |
Tb[1] = dAtom->getTy(); |
389 |
< |
Tb[2] = dAtom->getTz(); |
390 |
< |
|
391 |
< |
dAtom->lab2Body( Tb ); |
392 |
< |
|
393 |
< |
// get the angular momentum, and complete the angular momentum |
394 |
< |
// half step |
395 |
< |
|
396 |
< |
ji[0] = dAtom->getJx() + ( dt2 * Tb[0] ) * e_convert; |
397 |
< |
ji[1] = dAtom->getJy() + ( dt2 * Tb[1] ) * e_convert; |
398 |
< |
ji[2] = dAtom->getJz() + ( dt2 * Tb[2] ) * e_convert; |
399 |
< |
|
400 |
< |
dAtom->setJx( ji[0] ); |
401 |
< |
dAtom->setJy( ji[1] ); |
402 |
< |
dAtom->setJz( ji[2] ); |
403 |
< |
} |
404 |
< |
} |
405 |
< |
|
317 |
> |
void Integrator::moveB( void ){ |
318 |
> |
int i,j,k; |
319 |
> |
int atomIndex; |
320 |
> |
DirectionalAtom* dAtom; |
321 |
> |
double Tb[3]; |
322 |
> |
double ji[3]; |
323 |
|
|
324 |
< |
if (!strcasecmp( entry_plug->ensemble, "NVT")) |
325 |
< |
myES->NoseHooverNVT( dt / 2.0, tStats->getKinetic() ); |
324 |
> |
for( i=0; i<nAtoms; i++ ){ |
325 |
> |
atomIndex = i * 3; |
326 |
|
|
327 |
< |
if (!strcasecmp( entry_plug->ensemble, "NPT") ) { |
328 |
< |
tStats->getPressureTensor(press); |
329 |
< |
myES->NoseHooverAndersonNPT( dt, |
413 |
< |
tStats->getKinetic(), |
414 |
< |
press); |
415 |
< |
} |
327 |
> |
// velocity half step |
328 |
> |
for( j=atomIndex; j<(atomIndex+3); j++ ) |
329 |
> |
vel[j] += ( dt2 * frc[j] / atoms[i]->getMass() ) * eConvert; |
330 |
|
|
331 |
< |
time = tl + 1; |
331 |
> |
if( atoms[i]->isDirectional() ){ |
332 |
|
|
333 |
< |
if( entry_plug->setTemp ){ |
334 |
< |
if( !(time % vel_n) ) tStats->velocitize(); |
335 |
< |
} |
336 |
< |
if( !(time % sample_n) ) dump_out->writeDump( time * dt ); |
337 |
< |
if( !((time+1) % status_n) ) { |
338 |
< |
calcPot = 1; |
339 |
< |
calcStress = 1; |
340 |
< |
} |
341 |
< |
if( !(time % status_n) ){ |
342 |
< |
e_out->writeStat( time * dt ); |
343 |
< |
calcPot = 0; |
344 |
< |
if (!strcasecmp(entry_plug->ensemble, "NPT")) calcStress = 1; |
345 |
< |
else calcStress = 0; |
346 |
< |
} |
333 |
> |
dAtom = (DirectionalAtom *)atoms[i]; |
334 |
> |
|
335 |
> |
// get and convert the torque to body frame |
336 |
> |
|
337 |
> |
Tb[0] = dAtom->getTx(); |
338 |
> |
Tb[1] = dAtom->getTy(); |
339 |
> |
Tb[2] = dAtom->getTz(); |
340 |
> |
|
341 |
> |
dAtom->lab2Body( Tb ); |
342 |
> |
|
343 |
> |
// get the angular momentum, and complete the angular momentum |
344 |
> |
// half step |
345 |
> |
|
346 |
> |
ji[0] = dAtom->getJx() + ( dt2 * Tb[0] ) * eConvert; |
347 |
> |
ji[1] = dAtom->getJy() + ( dt2 * Tb[1] ) * eConvert; |
348 |
> |
ji[2] = dAtom->getJz() + ( dt2 * Tb[2] ) * eConvert; |
349 |
> |
|
350 |
> |
jx2 = ji[0] * ji[0]; |
351 |
> |
jy2 = ji[1] * ji[1]; |
352 |
> |
jz2 = ji[2] * ji[2]; |
353 |
> |
|
354 |
> |
dAtom->setJx( ji[0] ); |
355 |
> |
dAtom->setJy( ji[1] ); |
356 |
> |
dAtom->setJz( ji[2] ); |
357 |
|
} |
358 |
|
} |
435 |
– |
else{ |
359 |
|
|
360 |
< |
for( tl=0; tl<n_loops; tl++ ){ |
438 |
< |
|
439 |
< |
kE = 0.0; |
440 |
< |
rot_kE= 0.0; |
441 |
< |
trans_kE = 0.0; |
360 |
> |
} |
361 |
|
|
362 |
< |
if (!strcasecmp( entry_plug->ensemble, "NVT")) |
363 |
< |
myES->NoseHooverNVT( dt / 2.0, tStats->getKinetic() ); |
445 |
< |
|
446 |
< |
for( i=0; i<nAtoms; i++ ){ |
447 |
< |
|
448 |
< |
// velocity half step |
449 |
< |
|
450 |
< |
vx = atoms[i]->get_vx() + |
451 |
< |
( dt2 * atoms[i]->getFx() / atoms[i]->getMass() ) * e_convert; |
452 |
< |
vy = atoms[i]->get_vy() + |
453 |
< |
( dt2 * atoms[i]->getFy() / atoms[i]->getMass() ) * e_convert; |
454 |
< |
vz = atoms[i]->get_vz() + |
455 |
< |
( dt2 * atoms[i]->getFz() / atoms[i]->getMass() ) * e_convert; |
456 |
< |
|
457 |
< |
// position whole step |
458 |
< |
|
459 |
< |
rx = atoms[i]->getX() + dt * vx; |
460 |
< |
ry = atoms[i]->getY() + dt * vy; |
461 |
< |
rz = atoms[i]->getZ() + dt * vz; |
462 |
< |
|
463 |
< |
atoms[i]->setX( rx ); |
464 |
< |
atoms[i]->setY( ry ); |
465 |
< |
atoms[i]->setZ( rz ); |
466 |
< |
|
467 |
< |
atoms[i]->set_vx( vx ); |
468 |
< |
atoms[i]->set_vy( vy ); |
469 |
< |
atoms[i]->set_vz( vz ); |
470 |
< |
|
471 |
< |
if( atoms[i]->isDirectional() ){ |
362 |
> |
void Integrator::preMove( void ){ |
363 |
> |
int i; |
364 |
|
|
365 |
< |
dAtom = (DirectionalAtom *)atoms[i]; |
366 |
< |
|
475 |
< |
// get and convert the torque to body frame |
476 |
< |
|
477 |
< |
Tb[0] = dAtom->getTx(); |
478 |
< |
Tb[1] = dAtom->getTy(); |
479 |
< |
Tb[2] = dAtom->getTz(); |
480 |
< |
|
481 |
< |
dAtom->lab2Body( Tb ); |
482 |
< |
|
483 |
< |
// get the angular momentum, and propagate a half step |
484 |
< |
|
485 |
< |
ji[0] = dAtom->getJx() + ( dt2 * Tb[0] ) * e_convert; |
486 |
< |
ji[1] = dAtom->getJy() + ( dt2 * Tb[1] ) * e_convert; |
487 |
< |
ji[2] = dAtom->getJz() + ( dt2 * Tb[2] ) * e_convert; |
488 |
< |
|
489 |
< |
// get the atom's rotation matrix |
490 |
< |
|
491 |
< |
A[0][0] = dAtom->getAxx(); |
492 |
< |
A[0][1] = dAtom->getAxy(); |
493 |
< |
A[0][2] = dAtom->getAxz(); |
494 |
< |
|
495 |
< |
A[1][0] = dAtom->getAyx(); |
496 |
< |
A[1][1] = dAtom->getAyy(); |
497 |
< |
A[1][2] = dAtom->getAyz(); |
498 |
< |
|
499 |
< |
A[2][0] = dAtom->getAzx(); |
500 |
< |
A[2][1] = dAtom->getAzy(); |
501 |
< |
A[2][2] = dAtom->getAzz(); |
502 |
< |
|
503 |
< |
|
504 |
< |
// use the angular velocities to propagate the rotation matrix a |
505 |
< |
// full time step |
506 |
< |
|
507 |
< |
|
508 |
< |
angle = dt2 * ji[0] / dAtom->getIxx(); |
509 |
< |
this->rotate( 1, 2, angle, ji, A ); // rotate about the x-axis |
510 |
< |
|
511 |
< |
angle = dt2 * ji[1] / dAtom->getIyy(); |
512 |
< |
this->rotate( 2, 0, angle, ji, A ); // rotate about the y-axis |
513 |
< |
|
514 |
< |
angle = dt * ji[2] / dAtom->getIzz(); |
515 |
< |
this->rotate( 0, 1, angle, ji, A ); // rotate about the z-axis |
516 |
< |
|
517 |
< |
angle = dt2 * ji[1] / dAtom->getIyy(); |
518 |
< |
this->rotate( 2, 0, angle, ji, A ); // rotate about the y-axis |
519 |
< |
|
520 |
< |
angle = dt2 * ji[0] / dAtom->getIxx(); |
521 |
< |
this->rotate( 1, 2, angle, ji, A ); // rotate about the x-axis |
522 |
< |
|
523 |
< |
|
524 |
< |
dAtom->setA( A ); |
525 |
< |
dAtom->setJx( ji[0] ); |
526 |
< |
dAtom->setJy( ji[1] ); |
527 |
< |
dAtom->setJz( ji[2] ); |
528 |
< |
} |
529 |
< |
} |
365 |
> |
if( nConstrained ){ |
366 |
> |
if( oldAtoms != nAtoms ){ |
367 |
|
|
368 |
< |
// calculate the forces |
368 |
> |
// save oldAtoms to check for lode balanceing later on. |
369 |
|
|
370 |
< |
myFF->doForces(calcPot,calcStress); |
370 |
> |
oldAtoms = nAtoms; |
371 |
|
|
372 |
< |
for( i=0; i< nAtoms; i++ ){ |
373 |
< |
|
374 |
< |
// complete the velocity half step |
375 |
< |
|
376 |
< |
vx = atoms[i]->get_vx() + |
377 |
< |
( dt2 * atoms[i]->getFx() / atoms[i]->getMass() ) * e_convert; |
378 |
< |
vy = atoms[i]->get_vy() + |
379 |
< |
( dt2 * atoms[i]->getFy() / atoms[i]->getMass() ) * e_convert; |
380 |
< |
vz = atoms[i]->get_vz() + |
381 |
< |
( dt2 * atoms[i]->getFz() / atoms[i]->getMass() ) * e_convert; |
382 |
< |
|
383 |
< |
atoms[i]->set_vx( vx ); |
384 |
< |
atoms[i]->set_vy( vy ); |
548 |
< |
atoms[i]->set_vz( vz ); |
549 |
< |
|
550 |
< |
vx2 = vx * vx; |
551 |
< |
vy2 = vy * vy; |
552 |
< |
vz2 = vz * vz; |
553 |
< |
|
554 |
< |
if( atoms[i]->isDirectional() ){ |
372 |
> |
delete[] moving; |
373 |
> |
delete[] moved; |
374 |
> |
delete[] oldPos; |
375 |
> |
|
376 |
> |
moving = new int[nAtoms]; |
377 |
> |
moved = new int[nAtoms]; |
378 |
> |
|
379 |
> |
oldPos = new double[nAtoms*3]; |
380 |
> |
} |
381 |
> |
|
382 |
> |
for(i=0; i<(nAtoms*3); i++) oldPos[i] = pos[i]; |
383 |
> |
} |
384 |
> |
} |
385 |
|
|
386 |
< |
dAtom = (DirectionalAtom *)atoms[i]; |
557 |
< |
|
558 |
< |
// get and convert the torque to body frame |
559 |
< |
|
560 |
< |
Tb[0] = dAtom->getTx(); |
561 |
< |
Tb[1] = dAtom->getTy(); |
562 |
< |
Tb[2] = dAtom->getTz(); |
563 |
< |
|
564 |
< |
dAtom->lab2Body( Tb ); |
565 |
< |
|
566 |
< |
// get the angular momentum, and complete the angular momentum |
567 |
< |
// half step |
568 |
< |
|
569 |
< |
ji[0] = dAtom->getJx() + ( dt2 * Tb[0] ) * e_convert; |
570 |
< |
ji[1] = dAtom->getJy() + ( dt2 * Tb[1] ) * e_convert; |
571 |
< |
ji[2] = dAtom->getJz() + ( dt2 * Tb[2] ) * e_convert; |
572 |
< |
|
573 |
< |
jx2 = ji[0] * ji[0]; |
574 |
< |
jy2 = ji[1] * ji[1]; |
575 |
< |
jz2 = ji[2] * ji[2]; |
576 |
< |
|
577 |
< |
rot_kE += (jx2 / dAtom->getIxx()) + (jy2 / dAtom->getIyy()) |
578 |
< |
+ (jz2 / dAtom->getIzz()); |
579 |
< |
|
580 |
< |
dAtom->setJx( ji[0] ); |
581 |
< |
dAtom->setJy( ji[1] ); |
582 |
< |
dAtom->setJz( ji[2] ); |
583 |
< |
} |
386 |
> |
void Integrator::constrainA(){ |
387 |
|
|
388 |
< |
} |
389 |
< |
|
390 |
< |
if (!strcasecmp( entry_plug->ensemble, "NVT")) |
391 |
< |
myES->NoseHooverNVT( dt / 2.0, tStats->getKinetic() ); |
388 |
> |
int i,j,k; |
389 |
> |
int done; |
390 |
> |
double pxab, pyab, pzab; |
391 |
> |
double rxab, ryab, rzab; |
392 |
> |
int a, b; |
393 |
> |
double rma, rmb; |
394 |
> |
double dx, dy, dz; |
395 |
> |
double rabsq, pabsq, rpabsq; |
396 |
> |
double diffsq; |
397 |
> |
double gab; |
398 |
> |
int iteration; |
399 |
|
|
400 |
< |
if (!strcasecmp( entry_plug->ensemble, "NPT") ) { |
591 |
< |
tStats->getPressureTensor(press); |
592 |
< |
myES->NoseHooverAndersonNPT( dt, |
593 |
< |
tStats->getKinetic(), |
594 |
< |
press); |
595 |
< |
} |
400 |
> |
|
401 |
|
|
402 |
< |
time = tl + 1; |
403 |
< |
|
404 |
< |
if( entry_plug->setTemp ){ |
405 |
< |
if( !(time % vel_n) ) tStats->velocitize(); |
402 |
> |
for( i=0; i<nAtoms; i++){ |
403 |
> |
|
404 |
> |
moving[i] = 0; |
405 |
> |
moved[i] = 1; |
406 |
> |
} |
407 |
> |
|
408 |
> |
|
409 |
> |
iteration = 0; |
410 |
> |
done = 0; |
411 |
> |
while( !done && (iteration < maxIteration )){ |
412 |
> |
|
413 |
> |
done = 1; |
414 |
> |
for(i=0; i<nConstrained; i++){ |
415 |
> |
|
416 |
> |
a = constrainedA[i]; |
417 |
> |
b = constrainedB[i]; |
418 |
> |
|
419 |
> |
if( moved[a] || moved[b] ){ |
420 |
> |
|
421 |
> |
pxab = pos[3*a+0] - pos[3*b+0]; |
422 |
> |
pyab = pos[3*a+1] - pos[3*b+1]; |
423 |
> |
pzab = pos[3*a+2] - pos[3*b+2]; |
424 |
> |
|
425 |
> |
//periodic boundary condition |
426 |
> |
pxab = pxab - info->box_x * copysign(1, pxab) |
427 |
> |
* int(pxab / info->box_x + 0.5); |
428 |
> |
pyab = pyab - info->box_y * copysign(1, pyab) |
429 |
> |
* int(pyab / info->box_y + 0.5); |
430 |
> |
pzab = pzab - info->box_z * copysign(1, pzab) |
431 |
> |
* int(pzab / info->box_z + 0.5); |
432 |
> |
|
433 |
> |
pabsq = pxab * pxab + pyab * pyab + pzab * pzab; |
434 |
> |
rabsq = constraintedDsqr[i]; |
435 |
> |
diffsq = pabsq - rabsq; |
436 |
> |
|
437 |
> |
// the original rattle code from alan tidesley |
438 |
> |
if (fabs(diffsq) > tol*rabsq*2) { |
439 |
> |
rxab = oldPos[3*a+0] - oldPos[3*b+0]; |
440 |
> |
ryab = oldPos[3*a+1] - oldPos[3*b+1]; |
441 |
> |
rzab = oldPos[3*a+2] - oldPos[3*b+2]; |
442 |
> |
|
443 |
> |
rxab = rxab - info->box_x * copysign(1, rxab) |
444 |
> |
* int(rxab / info->box_x + 0.5); |
445 |
> |
ryab = ryab - info->box_y * copysign(1, ryab) |
446 |
> |
* int(ryab / info->box_y + 0.5); |
447 |
> |
rzab = rzab - info->box_z * copysign(1, rzab) |
448 |
> |
* int(rzab / info->box_z + 0.5); |
449 |
> |
|
450 |
> |
rpab = rxab * pxab + ryab * pyab + rzab * pzab; |
451 |
> |
rpabsq = rpab * rpab; |
452 |
> |
|
453 |
> |
|
454 |
> |
if (rpabsq < (rabsq * -diffsq)){ |
455 |
> |
#ifdef IS_MPI |
456 |
> |
a = atoms[a]->getGlobalIndex(); |
457 |
> |
b = atoms[b]->getGlobalIndex(); |
458 |
> |
#endif //is_mpi |
459 |
> |
sprintf( painCave.errMsg, |
460 |
> |
"Constraint failure in constrainA at atom %d and %d\n.", |
461 |
> |
a, b ); |
462 |
> |
painCave.isFatal = 1; |
463 |
> |
simError(); |
464 |
> |
} |
465 |
> |
|
466 |
> |
rma = 1.0 / atoms[a]->getMass(); |
467 |
> |
rmb = 1.0 / atoms[b]->getMass(); |
468 |
> |
|
469 |
> |
gab = diffsq / ( 2.0 * ( rma + rmb ) * rpab ); |
470 |
> |
dx = rxab * gab; |
471 |
> |
dy = ryab * gab; |
472 |
> |
dz = rzab * gab; |
473 |
> |
|
474 |
> |
pos[3*a+0] += rma * dx; |
475 |
> |
pos[3*a+1] += rma * dy; |
476 |
> |
pos[3*a+2] += rma * dz; |
477 |
> |
|
478 |
> |
pos[3*b+0] -= rmb * dx; |
479 |
> |
pos[3*b+1] -= rmb * dy; |
480 |
> |
pos[3*b+2] -= rmb * dz; |
481 |
> |
|
482 |
> |
dx = dx / dt; |
483 |
> |
dy = dy / dt; |
484 |
> |
dz = dz / dt; |
485 |
> |
|
486 |
> |
vel[3*a+0] += rma * dx; |
487 |
> |
vel[3*a+1] += rma * dy; |
488 |
> |
vel[3*a+2] += rma * dz; |
489 |
> |
|
490 |
> |
vel[3*b+0] -= rmb * dx; |
491 |
> |
vel[3*b+1] -= rmb * dy; |
492 |
> |
vel[3*b+2] -= rmb * dz; |
493 |
> |
|
494 |
> |
moving[a] = 1; |
495 |
> |
moving[b] = 1; |
496 |
> |
done = 0; |
497 |
> |
} |
498 |
|
} |
499 |
< |
if( !(time % sample_n) ) dump_out->writeDump( time * dt ); |
500 |
< |
if( !((time+1) % status_n) ) { |
501 |
< |
calcPot = 1; |
502 |
< |
calcStress = 1; |
499 |
> |
} |
500 |
> |
|
501 |
> |
for(i=0; i<nAtoms; i++){ |
502 |
> |
|
503 |
> |
moved[i] = moving[i]; |
504 |
> |
moving[i] = 0; |
505 |
> |
} |
506 |
> |
|
507 |
> |
iteration++; |
508 |
> |
} |
509 |
> |
|
510 |
> |
if( !done ){ |
511 |
> |
|
512 |
> |
sprintf( painCae.errMsg, |
513 |
> |
"Constraint failure in constrainA, too many iterations: %d\n", |
514 |
> |
iterations ); |
515 |
> |
painCave.isFatal = 1; |
516 |
> |
simError(); |
517 |
> |
} |
518 |
> |
|
519 |
> |
} |
520 |
> |
|
521 |
> |
void Integrator::constrainB( void ){ |
522 |
> |
|
523 |
> |
int i,j,k; |
524 |
> |
int done; |
525 |
> |
double vxab, vyab, vzab; |
526 |
> |
double rxab, ryab, rzab; |
527 |
> |
int a, b; |
528 |
> |
double rma, rmb; |
529 |
> |
double dx, dy, dz; |
530 |
> |
double rabsq, pabsq, rvab; |
531 |
> |
double diffsq; |
532 |
> |
double gab; |
533 |
> |
int iteration; |
534 |
> |
|
535 |
> |
for(i=0; i<nAtom; i++){ |
536 |
> |
moving[i] = 0; |
537 |
> |
moved[i] = 1; |
538 |
> |
} |
539 |
> |
|
540 |
> |
done = 0; |
541 |
> |
while( !done && (iteration < maxIteration ) ){ |
542 |
> |
|
543 |
> |
for(i=0; i<nConstrained; i++){ |
544 |
> |
|
545 |
> |
a = constrainedA[i]; |
546 |
> |
b = constrainedB[i]; |
547 |
> |
|
548 |
> |
if( moved[a] || moved[b] ){ |
549 |
> |
|
550 |
> |
vxab = vel[3*a+0] - vel[3*b+0]; |
551 |
> |
vyab = vel[3*a+1] - vel[3*b+1]; |
552 |
> |
vzab = vel[3*a+2] - vel[3*b+2]; |
553 |
> |
|
554 |
> |
rxab = pos[3*a+0] - pos[3*b+0];q |
555 |
> |
ryab = pos[3*a+1] - pos[3*b+1]; |
556 |
> |
rzab = pos[3*a+2] - pos[3*b+2]; |
557 |
> |
|
558 |
> |
rxab = rxab - info->box_x * copysign(1, rxab) |
559 |
> |
* int(rxab / info->box_x + 0.5); |
560 |
> |
ryab = ryab - info->box_y * copysign(1, ryab) |
561 |
> |
* int(ryab / info->box_y + 0.5); |
562 |
> |
rzab = rzab - info->box_z * copysign(1, rzab) |
563 |
> |
* int(rzab / info->box_z + 0.5); |
564 |
> |
|
565 |
> |
rma = 1.0 / atoms[a]->getMass(); |
566 |
> |
rmb = 1.0 / atoms[b]->getMass(); |
567 |
> |
|
568 |
> |
rvab = rxab * vxab + ryab * vyab + rzab * vzab; |
569 |
> |
|
570 |
> |
gab = -rvab / ( ( rma + rmb ) * constraintsDsqr[i] ); |
571 |
> |
|
572 |
> |
if (fabs(gab) > tol) { |
573 |
> |
|
574 |
> |
dx = rxab * gab; |
575 |
> |
dy = ryab * gab; |
576 |
> |
dz = rzab * gab; |
577 |
> |
|
578 |
> |
vel[3*a+0] += rma * dx; |
579 |
> |
vel[3*a+1] += rma * dy; |
580 |
> |
vel[3*a+2] += rma * dz; |
581 |
> |
|
582 |
> |
vel[3*b+0] -= rmb * dx; |
583 |
> |
vel[3*b+1] -= rmb * dy; |
584 |
> |
vel[3*b+2] -= rmb * dz; |
585 |
> |
|
586 |
> |
moving[a] = 1; |
587 |
> |
moving[b] = 1; |
588 |
> |
done = 0; |
589 |
> |
} |
590 |
|
} |
607 |
– |
if( !(time % status_n) ){ |
608 |
– |
e_out->writeStat( time * dt ); |
609 |
– |
calcPot = 0; |
610 |
– |
if (!strcasecmp(entry_plug->ensemble, "NPT")) calcStress = 1; |
611 |
– |
else calcStress = 0; |
612 |
– |
} |
591 |
|
} |
592 |
+ |
|
593 |
+ |
for(i=0; i<nAtoms; i++){ |
594 |
+ |
moved[i] = moving[i]; |
595 |
+ |
moving[i] = 0; |
596 |
+ |
} |
597 |
+ |
|
598 |
+ |
iteration++; |
599 |
|
} |
600 |
|
|
601 |
< |
dump_out->writeFinal(); |
601 |
> |
if( !done ){ |
602 |
|
|
603 |
< |
delete dump_out; |
604 |
< |
delete e_out; |
603 |
> |
|
604 |
> |
sprintf( painCae.errMsg, |
605 |
> |
"Constraint failure in constrainB, too many iterations: %d\n", |
606 |
> |
iterations ); |
607 |
> |
painCave.isFatal = 1; |
608 |
> |
simError(); |
609 |
> |
} |
610 |
> |
|
611 |
|
} |
612 |
|
|
613 |
< |
void Symplectic::rotate( int axes1, int axes2, double angle, double ji[3], |
613 |
> |
|
614 |
> |
|
615 |
> |
|
616 |
> |
|
617 |
> |
|
618 |
> |
|
619 |
> |
void Integrator::rotate( int axes1, int axes2, double angle, double ji[3], |
620 |
|
double A[3][3] ){ |
621 |
|
|
622 |
|
int i,j,k; |