/** process an xml element * @param cur current xmlNodePtr * @return true, if successful. * * Creating MCWalkerConfiguration for all the ParticleSet * objects. */ bool ParticleSetPool::put(xmlNodePtr cur) { ReportEngine PRE("ParticleSetPool","put"); //const ParticleSet::ParticleLayout_t* sc=DistanceTable::getSimulationCell(); //ParticleSet::ParticleLayout_t* sc=0; string id("e"), role("none"); OhmmsAttributeSet pAttrib; pAttrib.add(id,"id"); pAttrib.add(id,"name"); pAttrib.add(role,"role"); pAttrib.put(cur); //backward compatibility if(id == "e" && role=="none") role="MC"; ParticleSet* pTemp = getParticleSet(id); if(pTemp == 0) { app_log() << " Creating " << id << " particleset" << endl; pTemp = new MCWalkerConfiguration; //if(role == "MC") // pTemp = new MCWalkerConfiguration; //else // pTemp = new ParticleSet; if(SimulationCell) { app_log() << " Initializing the lattice of " << id << " by the global supercell" << endl; pTemp->Lattice.copy(*SimulationCell); } myPool[id] = pTemp; XMLParticleParser pread(*pTemp,TileMatrix); bool success = pread.put(cur); pTemp->setName(id); app_log() << pTemp->getName() <<endl; return success; } else { app_warning() << "particleset " << id << " is already created. Ignore this" << endl; } return true; }
int main(int argc, char **argv) { using namespace ohmmsqmc; xmlDocPtr m_doc; xmlNodePtr m_root; xmlXPathContextPtr m_context; enum {SourceIndex = DistanceTableData::SourceIndex}; OHMMS::Controller->initialize(argc,argv); OhmmsInfo welcome(argc,argv,OHMMS::Controller->mycontext()); ///project description OHMMS::ProjectData myProject; ///random number controller OHMMS::RandomNumberControl myRandomControl; if(argc>1) { // build an XML tree from a the file; LOGMSG("Opening file " << argv[1]) m_doc = xmlParseFile(argv[1]); if (m_doc == NULL) { ERRORMSG("File " << argv[1] << " is invalid") xmlFreeDoc(m_doc); return 1; } // Check the document is of the right kind m_root = xmlDocGetRootElement(m_doc); if (m_root == NULL) { ERRORMSG("Empty document"); xmlFreeDoc(m_doc); return 1; } } else { WARNMSG("No argument is given. Assume that does not need an input file") } m_context = xmlXPathNewContext(m_doc); xmlXPathObjectPtr result = xmlXPathEvalExpression((const xmlChar*)"//project",m_context); if(xmlXPathNodeSetIsEmpty(result->nodesetval)) { WARNMSG("Project is not defined") myProject.reset(); } else { myProject.put(result->nodesetval->nodeTab[0]); } xmlXPathFreeObject(result); //initialize the random number generator xmlNodePtr rptr = myRandomControl.initialize(m_context); if(rptr) { xmlAddChild(m_root,rptr); } ///the ions ParticleSet ion; MCWalkerConfiguration el; el.setName("e"); int iu = el.Species.addSpecies("u"); int id = el.Species.addSpecies("d"); int icharge = el.Species.addAttribute("charge"); el.Species(icharge,iu) = -1; el.Species(icharge,id) = -1; bool init_els = determineNumOfElectrons(el,m_context); result = xmlXPathEvalExpression((const xmlChar*)"//particleset",m_context); xmlNodePtr el_ptr=NULL, ion_ptr=NULL; for(int i=0; i<result->nodesetval->nodeNr; i++) { xmlNodePtr cur=result->nodesetval->nodeTab[i]; xmlChar* aname= xmlGetProp(cur,(const xmlChar*)"name"); if(aname) { char fc = aname[0]; if(fc == 'e') { el_ptr=cur; } else if(fc == 'i') { ion_ptr=cur; } } } bool donotresize = false; if(init_els) { el.setName("e"); XMLReport("The configuration for electrons is already determined by the wave function") donotresize = true; } if(el_ptr) { XMLParticleParser pread(el,donotresize); pread.put(el_ptr); } if(ion_ptr) { XMLParticleParser pread(ion); pread.put(ion_ptr); } xmlXPathFreeObject(result); if(!ion.getTotalNum()) { ion.setName("i"); ion.create(1); ion.R[0] = 0.0; } //The ion-ion distance-table DistanceTableData* d_ii = DistanceTable::getTable(DistanceTable::add(ion)); d_ii->create(1); d_ii->evaluate(ion); vector<double> Cut, Core; int Centers = ion.getTotalNum(); //attribute id for cut int icut = ion.Species.addAttribute("cut"); //store the max distance from atom Cut.resize(Centers); for(int iat=0; iat<Centers; iat++) { int id = ion.GroupID[iat]; Cut[iat] = ion.Species(icut,id); } int icore = ion.Species.addAttribute("core"); //store the max distance from atom Core.resize(Centers); for(int iat=0; iat<Centers; iat++) { Core[iat]=ion.Species(icore,ion.GroupID[iat]); } //3N-dimensional Gaussian ParticleSet::ParticlePos_t chi(el.getTotalNum()); makeGaussRandom(chi); //determine if odd or even number of particles int irem = el.getTotalNum()%2; int ihalf = el.getTotalNum()/2; //assign the core int ncore(0); for(int iat=0; iat<Centers; iat++) { double sep=0.8*Cut[iat]; for(int iel=0; iel<Core[iat]/2; iel++,ncore++) { el.R[ncore]=ion.R[iat]+sep*chi[ncore]; el.R[ncore+ihalf]=ion.R[iat]+sep*chi[ncore+ihalf]; } } int ipart = ncore; int isave_iat=0; for(int iat=0; iat<Centers; iat++) { for(int nn=d_ii->M[iat]; nn<d_ii->M[iat+1]; nn++) { double bondlength = d_ii->r(nn); int jat = d_ii->J[nn]; //only assign if the half bond-length < cutoff if(bondlength < Cut[iat]+Cut[jat]) { if(ipart < ihalf) { XMLReport("Assigning particles = " << ipart << " and " << ipart+ihalf) /*place 2 electrons (an up and a down) at half the bond-length plus a random number multiplied by 10% of the bond-length*/ el.R[ipart] = ion.R[iat]+0.5*d_ii->dr(nn)+0.1*bondlength*chi[ipart]; el.R[ipart+ihalf] = ion.R[iat]+0.5*d_ii->dr(nn)+0.1*bondlength*chi[ipart+ihalf]; ipart++; isave_iat = iat; } } } } //assign the last particle (if odd number of particles) int flag = 1; ipart = el.getTotalNum()-1; if(irem) { XMLReport("Assigning last particle.") for(int iat = isave_iat+1; iat<Centers; iat++) { for(int nn=d_ii->M[iat]; nn<d_ii->M[iat+1]; nn++) { double bondlength = d_ii->r(nn); if((0.5*bondlength < Cut[iat]) && flag) { XMLReport("Assigning particle = " << ipart) el.R[ipart] = ion.R[iat]+0.5*d_ii->dr(nn)+0.1*bondlength*chi[ipart]; flag = 0; } } } } cout << "Ionic configuration : " << ion.getName() << endl; ion.get(cout); cout << "Electronic configuration : " << el.getName() << endl; el.get(cout); string newxml(myProject.CurrentRoot()); newxml.append(".ptcl.xml"); ofstream ptcl_out(newxml.c_str()); /* ofstream molmol("assign.xyz"); molmol << Centers+el.getTotalNum() << endl; molmol << endl; for(int iat=0; iat<Centers; iat++) molmol << ion.Species.speciesName[ion.GroupID[iat]] << 0.5292*ion.R[iat] << endl; for(int ipart=0; ipart<el.getTotalNum(); ipart++) molmol << "He" << 0.5292*el.R[ipart] << endl; molmol.close(); */ xmlXPathFreeContext(m_context); xmlFreeDoc(m_doc); int nup = el.last(0); int ndown = el.last(1)-el.last(0); ptcl_out << "<?xml version=\"1.0\"?>" << endl; ptcl_out << "<particleset name=\"e\">" << endl; ptcl_out << "<group name=\"u\" size=\"" << nup << "\">" << endl; ptcl_out << "<parameter name=\"charge\">-1</parameter>" << endl; ptcl_out << "<attrib name=\"position\" datatype=\"posArray\">" << endl; for (int ipart=0; ipart<nup; ++ipart) ptcl_out << el.R[ipart] << endl; ptcl_out << "</attrib>" << endl; ptcl_out << "</group>" << endl; ptcl_out << "<group name=\"d\" size=\"" << ndown << "\">" << endl; ptcl_out << "<parameter name=\"charge\">-1</parameter>" << endl; ptcl_out << "<attrib name=\"position\" datatype=\"posArray\">" << endl; for (int ipart=nup; ipart<el.getTotalNum(); ++ipart) ptcl_out << el.R[ipart] << endl; ptcl_out << "</attrib>" << endl; ptcl_out << "</group>" << endl; ptcl_out << "</particleset>" << endl; OHMMS::Controller->finalize(); return 0; }