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More ramses load modules

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This commit is contained in:
Guilhem Lavaux 2009-11-06 22:12:31 -06:00
parent 9c52937c74
commit 11218a4fd1
3 changed files with 175 additions and 2 deletions
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166
src/loadRamses.cpp
View File

@ -268,7 +268,7 @@ CosmoTool::PurePositionData *CosmoTool::loadRamsesPosition(const char *basename,
return 0;
double hubble = info.aexp*info.aexp/info.unit_t / (1e5/CM_IN_MPC);
double L0 = info.boxSize*info.unitLength/CM_IN_MPC/info.aexp;
double L0 = info.boxSize*info.unitLength*hubble/100/CM_IN_MPC/info.aexp;
if (!quiet)
{
cout << "L0=" << L0 << " Mpc" << endl;
@ -436,7 +436,7 @@ CosmoTool::PhaseSpaceData *CosmoTool::loadRamsesPhase(const char *basename, int
if (!readInfoFile(basename, outputId, info))
return 0;
double unit_vel = info.unitLength/info.unit_t;
double unit_vel = info.unitLength/info.unit_t/1e5;
double hubble = info.aexp*info.aexp/info.unit_t / (1e5/CM_IN_MPC);
double L0 = info.boxSize*info.unitLength/CM_IN_MPC/info.aexp;
if (!quiet) {
@ -596,3 +596,165 @@ CosmoTool::PhaseSpaceData *CosmoTool::loadRamsesPhase(const char *basename, int
return gd;
}
CosmoTool::PhaseSpaceDataID *CosmoTool::loadRamsesPhase1(const char *basename, int outputId, int cpuid, bool quiet)
{
PhaseSpaceDataID *gd = (PhaseSpaceDataID *)malloc(sizeof(PhaseSpaceDataID));
int id = 1;
uint32_t totPart = 0;
int nCpu = 0;
InfoData info;
static const double CM_IN_MPC = 3.08e24;
if (!readInfoFile(basename, outputId, info))
return 0;
double hubble = info.aexp*info.aexp/info.unit_t / (1e5/CM_IN_MPC);
double L0 = info.boxSize*info.unitLength*hubble/100/CM_IN_MPC/info.aexp;
double unit_vel = 100*L0/info.aexp;
if (!quiet) {
cout << "L0=" << L0 << " Mpc" << endl;
cout << "H=" << hubble << " km/s/Mpc" << endl;
cout << "unitvel=" << unit_vel << " km/s" << endl;
}
if (!quiet)
cout << "Detecting number of files and particles..." << endl;
id = cpuid;
{
ostringstream ss_fname;
ss_fname << basename << "/part_" << setfill('0') << setw(5) << outputId << ".out" << setfill('0') << setw(5) << id;
string fname = ss_fname.str();
if (!quiet)
cout << " ... " << fname << endl;
try
{
UnformattedRead infile(fname);
int ndim, nPar;
infile.beginCheckpoint();
nCpu = max(1,infile.readInt32());
infile.endCheckpoint();
infile.beginCheckpoint();
ndim = infile.readInt32();
infile.endCheckpoint();
infile.beginCheckpoint();
nPar = infile.readInt32();
infile.endCheckpoint();
if (!quiet)
cout << " NUMCPU=" << nCpu << " NUMDIM=" << ndim << " NumPart=" << nPar << endl;
totPart += nPar;
id++;
}
catch (const NoSuchFileException& e)
{
return 0;
}
}
assert (totPart <= ((~(size_t)0)/sizeof(FCoordinates)));
size_t memSize = sizeof(FCoordinates)*(size_t)(totPart+totPart/nCpu);
if (!quiet)
cout << " Needing " << memSize / 1024 << " kBytes" << endl;
gd->pos = (FCoordinates *)malloc(sizeof(FCoordinates)*totPart);
assert(gd->pos != 0);
gd->vel = (FCoordinates *)malloc(sizeof(FCoordinates)*totPart);
assert(gd->vel != 0);
gd->ID = (int *)malloc(sizeof(int)*totPart);
assert(gd->ID != 0);
gd->NumPart = totPart;
gd->BoxSize = L0*1000;
gd->hubble = hubble;
uint32_t curPos = 0;
id = cpuid;
{
ostringstream ss_fname;
ss_fname << basename << "/part_" << setfill('0') << setw(5) << outputId << ".out" << setfill('0') << setw(5) << id;
string fname = ss_fname.str();
int *idP;
if (!quiet)
(cout << " ... " << id).flush();
try
{
UnformattedRead infile(fname);
int nCpu, ndim, nPar;
infile.beginCheckpoint();
nCpu = infile.readInt32();
infile.endCheckpoint();
infile.beginCheckpoint();
ndim = infile.readInt32();
infile.endCheckpoint();
infile.beginCheckpoint();
nPar = infile.readInt32();
infile.endCheckpoint();
gd->pos = new FCoordinates[nPar];
gd->vel = new FCoordinates[nPar];
for (int k = 0; k < 3; k++)
{
infile.beginCheckpoint();
for (uint32_t i = 0; i < nPar; i++)
{
gd->pos[i][k] = infile.readReal32()*gd->BoxSize;
}
infile.endCheckpoint();
}
// SKIP VELOCITIES
for (int k = 0; k < 3; k++) {
infile.beginCheckpoint();
for (uint32_t i = 0; i < nPar; i++)
{
gd->vel[i][k] = infile.readReal32()*unit_vel;
}
infile.endCheckpoint();
}
float minMass = INFINITY;
infile.beginCheckpoint();
for (uint32_t i = nPar; i > 0; i--)
{
float dummyF = infile.readReal32();
if (dummyF < minMass) minMass = dummyF;
}
infile.endCheckpoint();
infile.beginCheckpoint();
for (uint32_t i = 0; i < nPar; i++)
{
gd->ID[i] = infile.readInt32();
}
infile.endCheckpoint();
curPos += nPar;
}
catch (const NoSuchFileException& e)
{
return 0;
}
}
if (!quiet)
cout << endl;
return gd;
}

2
src/loadRamses.hpp
View File

@ -8,6 +8,8 @@ namespace CosmoTool {
GadgetData *loadRamses(const char *name, bool quiet = false);
PurePositionData *loadRamsesPosition(const char *fname, int id, bool quiet = false);
PhaseSpaceData *loadRamsesPhase(const char *fname, int id, bool quiet = false);
PhaseSpaceDataID *loadRamsesPhase1(const char *fname, int id, int cpuid, bool quiet = false);
};
#endif

9
src/load_data.hpp
View File

@ -72,6 +72,15 @@ namespace CosmoTool {
FCoordinates *vel;
};
struct PhaseSpaceDataID {
unsigned int NumPart;
double hubble;
double BoxSize;
FCoordinates *pos;
FCoordinates *vel;
int *ID;
};
void writeGadget(GadgetData *data, const char *fname);
GadgetData *loadGadget(const char *fname);
void freeGadget(GadgetData *data);