/*+ This is CosmoTool (./src/loadGadget.cpp) -- Copyright (C) Guilhem Lavaux (2007-2014) guilhem.lavaux@gmail.com This software is a computer program whose purpose is to provide a toolbox for cosmological data analysis (e.g. filters, generalized Fourier transforms, power spectra, ...) This software is governed by the CeCILL license under French law and abiding by the rules of distribution of free software. You can use, modify and/ or redistribute the software under the terms of the CeCILL license as circulated by CEA, CNRS and INRIA at the following URL "http://www.cecill.info". As a counterpart to the access to the source code and rights to copy, modify and redistribute granted by the license, users are provided only with a limited warranty and the software's author, the holder of the economic rights, and the successive licensors have only limited liability. In this respect, the user's attention is drawn to the risks associated with loading, using, modifying and/or developing or reproducing the software by the user in light of its specific status of free software, that may mean that it is complicated to manipulate, and that also therefore means that it is reserved for developers and experienced professionals having in-depth computer knowledge. Users are therefore encouraged to load and test the software's suitability as regards their requirements in conditions enabling the security of their systems and/or data to be ensured and, more generally, to use and operate it in the same conditions as regards security. The fact that you are presently reading this means that you have had knowledge of the CeCILL license and that you accept its terms. +*/ #include #include #include #include #include #include #include #include "load_data.hpp" #include "loadGadget.hpp" #include "fortran.hpp" using namespace CosmoTool; using namespace std; void loadGadgetHeader(UnformattedRead *f, GadgetHeader& h, SimuData *data, int id) { f->beginCheckpoint(); for (int i = 0; i < 6; i++) h.npart[i] = f->readInt32(); for (int i = 0; i < 6; i++) h.mass[i] = f->readReal64(); data->time = h.time = f->readReal64(); h.redshift = f->readReal64(); h.flag_sfr = f->readInt32(); h.flag_feedback = f->readInt32(); for (int i = 0; i < 6; i++) h.npartTotal[i] = f->readInt32(); h.flag_cooling = f->readInt32(); h.num_files = f->readInt32(); data->BoxSize = h.BoxSize = f->readReal64(); data->Omega_M = h.Omega0 = f->readReal64(); data->Omega_Lambda = h.OmegaLambda = f->readReal64(); data->Hubble = h.HubbleParam = f->readReal64(); (int)f->readInt32(); // stellarage (int)f->readInt32(); // metals for (int i = 0; i < 6; i++) h.npartTotal[i] |= ((unsigned long)f->readInt32()) << 32; (int)f->readInt32(); // entropy instead of u h.flag_doubleprecision = f->readInt32(); f->endCheckpoint(true); ssize_t NumPart = 0, NumPartTotal = 0; for(int k=0; k<6; k++) { NumPart += h.npart[k]; NumPartTotal += (id < 0) ? h.npart[k] : h.npartTotal[k]; } data->NumPart = NumPart; data->TotalNumPart = NumPartTotal; } template T myRead64(UnformattedRead *f) { return f->readReal64(); } template T myRead32(UnformattedRead *f) { return f->readReal32(); } template T myReadI64(UnformattedRead *f) { return f->readInt64(); } template T myReadI32(UnformattedRead *f) { return f->readInt32(); } struct BlockInfo { int64_t position, size; }; SimuData *CosmoTool::loadGadgetMulti(const char *fname, int id, int loadflags, int GadgetFormat, SimuFilter filter) { SimuData *data; int p, n; UnformattedRead *f; GadgetHeader h; float velmul; boost::function0 readToDouble; boost::function0 readToSingle; boost::function0 readID; long float_size; if (GadgetFormat > 2) { cerr << "Unknown gadget format" << endl; return 0; } if (id >= 0) { int k = snprintf(0, 0, "%s.%d", fname, id)+1; char *out_fname = new char[k]; snprintf(out_fname, k, "%s.%d", fname, id); f = new UnformattedRead(out_fname); if (f == 0) return 0; delete[] out_fname; } else { f = new UnformattedRead(fname); if (f == 0) return 0; } typedef std::map BlockMap; BlockMap blockTable; if (GadgetFormat == 2) { int64_t startBlock = 0; char block[5]; int32_t blocksize; try { while (true) { f->beginCheckpoint(); f->readOrderedBuffer(block, 4); block[4] = 0; blocksize = f->readInt32(); f->endCheckpoint(); blockTable[block].position = f->position(); blockTable[block].size = blocksize; f->skip(blocksize); } } catch (EndOfFileException&) {} f->seek(startBlock); } data = new SimuData; if (data == 0) { delete f; return 0; } ssize_t NumPart = 0, NumPartTotal = 0; #define ENSURE2(name,out_sz) { \ if (GadgetFormat == 2) { \ BlockMap::iterator iter = blockTable.find(name); \ int64_t sz; \ if (iter == blockTable.end()) { \ std::cerr << "GADGET2: Cannot find block named '" << name << "'" << endl; \ if (data) delete data; \ delete f; \ return 0; \ } \ f->seek(iter->second.position); \ sz = iter->second.size; \ out_sz = sz;\ } \ } #define ENSURE(name) ENSURE2(name,sz); try { ENSURE("HEAD"); loadGadgetHeader(f, h, data, id); velmul = sqrt(h.time); if (h.flag_doubleprecision) { //cout << "Gadget format with double precision" << endl; readToDouble = boost::bind(myRead64, f); readToSingle = boost::bind(myRead64, f); float_size = sizeof(double); } else { //cout << "Gadget format with single precision" << endl; readToDouble = boost::bind(myRead32, f); readToSingle = boost::bind(myRead32, f); float_size = sizeof(float); } NumPart = data->NumPart; NumPartTotal = data->TotalNumPart; } catch (const InvalidUnformattedAccess& e) { cerr << "Invalid format while reading header" << endl; delete data; delete f; return 0; } if (loadflags & NEED_TYPE) { int p = 0; data->type = new int[data->NumPart]; for (int k = 0; k < 6; k++) for (int n = 0; n < h.npart[k]; n++,p++) data->type[p] = k; } if (loadflags & NEED_POSITION) { for (int i = 0; i < 3; i++) { data->Pos[i] = new float[data->NumPart]; if (data->Pos[i] == 0) { delete data; return 0; } } try { ENSURE("POS "); f->beginCheckpoint(); if (f->getBlockSize() != NumPart*float_size*3) { // Check that single would work if (f->getBlockSize() == NumPart*sizeof(float)*3) { // Change to single cout << "Change back to single. Buggy header." << endl; readToDouble = boost::bind(myRead32, f); readToSingle = boost::bind(myRead32, f); float_size = sizeof(float); } } for(int k = 0, p = 0; k < 6; k++) { for(int n = 0; n < h.npart[k]; n++) { // if ((n%1000000)==0) cout << n << endl; data->Pos[0][p] = readToSingle(); data->Pos[1][p] = readToSingle(); data->Pos[2][p] = readToSingle(); p++; } } f->endCheckpoint(); } catch (const InvalidUnformattedAccess& e) { cerr << "Invalid format while reading positions" << endl; delete f; delete data; return 0; } } else { long float_size = (h.flag_doubleprecision) ? sizeof(double) : sizeof(float); // Skip positions f->skip(NumPart * 3 * float_size + 2*4); } if (loadflags & NEED_VELOCITY) { for (int i = 0; i < 3; i++) { data->Vel[i] = new float[data->NumPart]; if (data->Vel[i] == 0) { delete f; delete data; return 0; } } try { ENSURE("VEL "); f->beginCheckpoint(); for(int k = 0, p = 0; k < 6; k++) { for(int n = 0; n < h.npart[k]; n++) { // THIS IS GADGET 1 // if ((n%1000000)==0) cout << n << endl; data->Vel[0][p] = readToSingle()*velmul; data->Vel[1][p] = readToSingle()*velmul; data->Vel[2][p] = readToSingle()*velmul; p++; } } f->endCheckpoint(); } catch (const InvalidUnformattedAccess& e) { cerr << "Invalid format while reading velocities" << endl; delete f; delete data; return 0; } // THE VELOCITIES ARE IN PHYSICAL COORDINATES /// // TODO: FIX THE UNITS OF THESE FUNKY VELOCITIES !!! } else { // Skip velocities f->skip(NumPart*3*float_size+2*4); } // Skip ids if (loadflags & NEED_GADGET_ID) { try { int64_t idSize; ENSURE2("ID ", idSize); if (idSize / data->NumPart == 8) { readID = boost::bind(myReadI64, f); } else if (idSize / data->NumPart == 4) { readID = boost::bind(myReadI32, f); } else { throw InvalidUnformattedAccess(); } f->beginCheckpoint(); data->Id = new long[data->NumPart]; if (data->Id == 0) { delete f; delete data; return 0; } for(int k = 0, p = 0; k < 6; k++) { for(int n = 0; n < h.npart[k]; n++) { data->Id[p] = readID(); p++; } } f->endCheckpoint(); } catch (const InvalidUnformattedAccess& e) { cerr << "Invalid unformatted access while reading ID" << endl; delete f; delete data; return 0; } } else { f->skip(2*4); for (int k = 0; k < 6; k++) f->skip(h.npart[k]*4); } if (loadflags & NEED_MASS) { bool do_load = false; for (int k = 0; k < 6; k++) { do_load = do_load || ((h.mass[k] == 0)&&(h.npart[k]>0)); } try { long l = 0; if (do_load) { ENSURE("MASS"); f->beginCheckpoint(); } data->Mass = new float[NumPart]; for (int k = 0; k < 6; k++) { if (h.mass[k] == 0) { for(int n = 0; n < h.npart[k]; n++) { // if ((n%1000000)==0) cout << n << endl; data->Mass[l++] = readToSingle(); } } else { for(int n = 0; n < h.npart[k]; n++) { if ((n%1000000)==0) cout << n << endl; data->Mass[l++] = h.mass[k]; } } } if (do_load) f->endCheckpoint(); } catch (const InvalidUnformattedAccess& e) { cerr << "Invalid unformatted access while reading ID" << endl; delete f; delete data; return 0; } catch (const EndOfFileException& e) { for (int k = 0; k < 6; k++) cerr << "mass[" << k << "] = " << h.mass[k] << endl; } } else { f->skip(2*4); for (int k = 0; k < 6; k++) if (h.mass[k] == 0) f->skip(h.npart[k]*4); } delete f; return data; } #undef ENSURE void CosmoTool::writeGadget(const std::string& fname, SimuData *data, int GadgetFormat) { UnformattedWrite *f; int npart[6], npartTotal[6]; float mass[6]; if (data->Pos[0] == 0 || data->Vel[0] == 0 || data->Id == 0) { cerr << "Invalid simulation data array" << endl; return; } f = new UnformattedWrite(fname); if (f == 0) { cerr << "Cannot create file" << endl; return; } for (int i = 0; i < 6; i++) { npart[i] = npartTotal[i] = 0; mass[i] = 0; } mass[1] = 1.0; npart[1] = data->NumPart; npartTotal[1] = data->TotalNumPart; f->beginCheckpoint(); for (int i = 0; i < 6; i++) f->writeInt32(npart[i]); for (int i = 0; i < 6; i++) f->writeReal64(mass[i]); f->writeReal64(data->time); f->writeReal64(1/data->time-1); f->writeInt32(0); f->writeInt32(0); for (int i = 0; i < 6; i++) f->writeInt32(npartTotal[i]); f->writeInt32(0); f->writeInt32(1); f->writeReal64(data->BoxSize); f->writeReal64(data->Omega_M); f->writeReal64(data->Omega_Lambda); f->writeReal64(data->Hubble); char buf[100] = { 0, }; f->writeOrderedBuffer(buf, 96); f->endCheckpoint(); f->beginCheckpoint(); for(int n = 0; n < data->NumPart; n++) { for (int k = 0; k < 3; k++) f->writeReal32(data->Pos[k][n]); } f->endCheckpoint(); float velmul = 1.0; velmul = sqrt(data->time); f->beginCheckpoint(); for(int n = 0; n < data->NumPart; n++) { for (int k = 0; k < 3; k++) f->writeReal32(data->Vel[k][n]/velmul); } f->endCheckpoint(); f->beginCheckpoint(); for(int n = 0; n < data->NumPart; n++) { f->writeInt32(data->Id[n]); } f->endCheckpoint(); delete f; }