/
io.c
1150 lines (958 loc) · 27.8 KB
/
io.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <mpi.h>
#include <errno.h>
#ifdef HAVE_HDF5
#include <hdf5.h>
#endif
#include "allvars.h"
#include "proto.h"
/*! \file io.c
* \brief Routines for producing a snapshot file on disk.
*/
static int n_type[6];
static long long ntot_type_all[6];
/*! This function writes a snapshot of the particle distribution to one or
* several files using the selected file format. If NumFilesPerSnapshot>1,
* the snapshot is distributed onto several files, several of them can be
* written simultaneously (up to NumFilesWrittenInParallel). Each file
* contains data from a group of processors.
*/
void savepositions(int num)
{
double t0, t1;
char buf[500];
int i, j, *temp, n, filenr, gr, ngroups, masterTask, lastTask;
t0 = second();
if(ThisTask == 0)
printf("\nwriting snapshot file... \n");
#if defined(SFR) || defined(BLACK_HOLES)
rearrange_particle_sequence();
/* ensures that new tree will be constructed */
All.NumForcesSinceLastDomainDecomp = 1 + All.TreeDomainUpdateFrequency * All.TotNumPart;
#endif
if(NTask < All.NumFilesPerSnapshot)
{
if(ThisTask == 0)
printf("Fatal error.\nNumber of processors must be larger or equal than All.NumFilesPerSnapshot.\n");
endrun(0);
}
if(All.SnapFormat < 1 || All.SnapFormat > 3)
{
if(ThisTask == 0)
printf("Unsupported File-Format\n");
endrun(0);
}
#ifndef HAVE_HDF5
if(All.SnapFormat == 3)
{
if(ThisTask == 0)
printf("Code wasn't compiled with HDF5 support enabled!\n");
endrun(0);
}
#endif
/* determine global and local particle numbers */
for(n = 0; n < 6; n++)
n_type[n] = 0;
for(n = 0; n < NumPart; n++)
n_type[P[n].Type]++;
/* because ntot_type_all[] is of type `long long', we cannot do a simple
* MPI_Allreduce() to sum the total particle numbers
*/
temp = malloc(NTask * 6 * sizeof(int));
MPI_Allgather(n_type, 6, MPI_INT, temp, 6, MPI_INT, MPI_COMM_WORLD);
for(i = 0; i < 6; i++)
{
ntot_type_all[i] = 0;
for(j = 0; j < NTask; j++)
ntot_type_all[i] += temp[j * 6 + i];
}
free(temp);
/* assign processors to output files */
distribute_file(All.NumFilesPerSnapshot, 0, 0, NTask - 1, &filenr, &masterTask, &lastTask);
fill_Tab_IO_Labels();
if(All.NumFilesPerSnapshot > 1)
sprintf(buf, "%s%s_%03d.%d", All.OutputDir, All.SnapshotFileBase, num, filenr);
else
sprintf(buf, "%s%s_%03d", All.OutputDir, All.SnapshotFileBase, num);
ngroups = All.NumFilesPerSnapshot / All.NumFilesWrittenInParallel;
if((All.NumFilesPerSnapshot % All.NumFilesWrittenInParallel))
ngroups++;
for(gr = 0; gr < ngroups; gr++)
{
if((filenr / All.NumFilesWrittenInParallel) == gr) /* ok, it's this processor's turn */
write_file(buf, masterTask, lastTask);
MPI_Barrier(MPI_COMM_WORLD);
}
if(ThisTask == 0)
printf("done with snapshot.\n");
t1 = second();
All.CPU_Snapshot += timediff(t0, t1);
}
/*! This function fills the write buffer with particle data. New output blocks
* can in principle be added here.
*/
void fill_write_buffer(enum iofields blocknr, int *startindex, int pc, int type)
{
int n, k, pindex;
float *fp;
#ifdef LONGIDS
long long *ip;
#else
int *ip;
#endif
#ifdef PERIODIC
FLOAT boxSize;
#endif
#ifdef PMGRID
double dt_gravkick_pm = 0;
#endif
double dt_gravkick, dt_hydrokick, a3inv = 1, fac1, fac2;
if(All.ComovingIntegrationOn)
{
a3inv = 1 / (All.Time * All.Time * All.Time);
fac1 = 1 / (All.Time * All.Time);
fac2 = 1 / pow(All.Time, 3 * GAMMA - 2);
}
else
a3inv = fac1 = fac2 = 1;
#ifdef PMGRID
if(All.ComovingIntegrationOn)
dt_gravkick_pm =
get_gravkick_factor(All.PM_Ti_begstep,
All.Ti_Current) -
get_gravkick_factor(All.PM_Ti_begstep, (All.PM_Ti_begstep + All.PM_Ti_endstep) / 2);
else
dt_gravkick_pm = (All.Ti_Current - (All.PM_Ti_begstep + All.PM_Ti_endstep) / 2) * All.Timebase_interval;
#endif
fp = CommBuffer;
ip = CommBuffer;
pindex = *startindex;
switch (blocknr)
{
case IO_POS: /* positions */
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
for(k = 0; k < 3; k++)
{
fp[k] = P[pindex].Pos[k];
#ifdef PERIODIC
boxSize = All.BoxSize;
#ifdef LONG_X
if(k == 0)
boxSize = All.BoxSize * LONG_X;
#endif
#ifdef LONG_Y
if(k == 1)
boxSize = All.BoxSize * LONG_Y;
#endif
#ifdef LONG_Z
if(k == 2)
boxSize = All.BoxSize * LONG_Z;
#endif
while(fp[k] < 0)
fp[k] += boxSize;
while(fp[k] >= boxSize)
fp[k] -= boxSize;
#endif
}
n++;
fp += 3;
}
break;
case IO_VEL: /* velocities */
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
if(All.ComovingIntegrationOn)
{
dt_gravkick =
get_gravkick_factor(P[pindex].Ti_begstep,
All.Ti_Current) -
get_gravkick_factor(P[pindex].Ti_begstep,
(P[pindex].Ti_begstep + P[pindex].Ti_endstep) / 2);
dt_hydrokick =
get_hydrokick_factor(P[pindex].Ti_begstep,
All.Ti_Current) -
get_hydrokick_factor(P[pindex].Ti_begstep,
(P[pindex].Ti_begstep + P[pindex].Ti_endstep) / 2);
}
else
dt_gravkick = dt_hydrokick =
(All.Ti_Current - (P[pindex].Ti_begstep + P[pindex].Ti_endstep) / 2) * All.Timebase_interval;
for(k = 0; k < 3; k++)
{
fp[k] = P[pindex].Vel[k] + P[pindex].GravAccel[k] * dt_gravkick;
if(P[pindex].Type == 0)
fp[k] += SphP[pindex].HydroAccel[k] * dt_hydrokick;
}
#ifdef PMGRID
for(k = 0; k < 3; k++)
fp[k] += P[pindex].GravPM[k] * dt_gravkick_pm;
#endif
for(k = 0; k < 3; k++)
fp[k] *= sqrt(a3inv);
n++;
fp += 3;
}
break;
case IO_ID: /* particle ID */
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
*ip++ = P[pindex].ID;
n++;
}
break;
case IO_MASS: /* particle mass */
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
*fp++ = P[pindex].Mass;
n++;
}
break;
case IO_U: /* internal energy */
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
#ifdef ISOTHERM_EQS
*fp++ = SphP[pindex].Entropy;
#else
*fp++ =
dmax(All.MinEgySpec,
SphP[pindex].Entropy / GAMMA_MINUS1 * pow(SphP[pindex].Density * a3inv, GAMMA_MINUS1));
#endif
n++;
}
break;
case IO_RHO: /* density */
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
*fp++ = SphP[pindex].Density;
n++;
}
break;
case IO_HSML: /* SPH smoothing length */
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
*fp++ = SphP[pindex].Hsml;
n++;
}
break;
case IO_POT: /* gravitational potential */
#ifdef OUTPUTPOTENTIAL
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
*fp++ = P[pindex].Potential;
n++;
}
#endif
break;
case IO_ACCEL: /* acceleration */
#ifdef OUTPUTACCELERATION
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
for(k = 0; k < 3; k++)
fp[k] = fac1 * P[pindex].GravAccel[k];
#ifdef PMGRID
for(k = 0; k < 3; k++)
fp[k] += fac1 * P[pindex].GravPM[k];
#endif
if(P[pindex].Type == 0)
for(k = 0; k < 3; k++)
fp[k] += fac2 * SphP[pindex].HydroAccel[k];
fp += 3;
n++;
}
#endif
break;
case IO_DTENTR: /* rate of change of entropy */
#ifdef OUTPUTCHANGEOFENTROPY
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
*fp++ = SphP[pindex].DtEntropy;
n++;
}
#endif
break;
case IO_TSTP: /* timestep */
#ifdef OUTPUTTIMESTEP
for(n = 0; n < pc; pindex++)
if(P[pindex].Type == type)
{
*fp++ = (P[pindex].Ti_endstep - P[pindex].Ti_begstep) * All.Timebase_interval;
n++;
}
#endif
break;
}
*startindex = pindex;
}
/*! This function tells the size of one data entry in each of the blocks
* defined for the output file. If one wants to add a new output-block, this
* function should be augmented accordingly.
*/
int get_bytes_per_blockelement(enum iofields blocknr)
{
int bytes_per_blockelement = 0;
switch (blocknr)
{
case IO_POS:
case IO_VEL:
case IO_ACCEL:
bytes_per_blockelement = 3 * sizeof(float);
break;
case IO_ID:
#ifdef LONGIDS
bytes_per_blockelement = sizeof(long long);
#else
bytes_per_blockelement = sizeof(int);
#endif
break;
case IO_MASS:
case IO_U:
case IO_RHO:
case IO_HSML:
case IO_POT:
case IO_DTENTR:
case IO_TSTP:
bytes_per_blockelement = sizeof(float);
break;
}
return bytes_per_blockelement;
}
/*! This function returns the type of the data contained in a given block of
* the output file. If one wants to add a new output-block, this function
* should be augmented accordingly.
*/
int get_datatype_in_block(enum iofields blocknr)
{
int typekey;
switch (blocknr)
{
case IO_ID:
#ifdef LONGIDS
typekey = 2; /* native long long */
#else
typekey = 0; /* native int */
#endif
break;
default:
typekey = 1; /* native float */
break;
}
return typekey;
}
/*! This function informs about the number of elements stored per particle for
* the given block of the output file. If one wants to add a new
* output-block, this function should be augmented accordingly.
*/
int get_values_per_blockelement(enum iofields blocknr)
{
int values = 0;
switch (blocknr)
{
case IO_POS:
case IO_VEL:
case IO_ACCEL:
values = 3;
break;
case IO_ID:
case IO_MASS:
case IO_U:
case IO_RHO:
case IO_HSML:
case IO_POT:
case IO_DTENTR:
case IO_TSTP:
values = 1;
break;
}
return values;
}
/*! This function determines how many particles there are in a given block,
* based on the information in the header-structure. It also flags particle
* types that are present in the block in the typelist array. If one wants to
* add a new output-block, this function should be augmented accordingly.
*/
int get_particles_in_block(enum iofields blocknr, int *typelist)
{
int i, nall, ntot_withmasses, ngas, nstars;
nall = 0;
ntot_withmasses = 0;
for(i = 0; i < 6; i++)
{
typelist[i] = 0;
if(header.npart[i] > 0)
{
nall += header.npart[i];
typelist[i] = 1;
}
if(All.MassTable[i] == 0)
ntot_withmasses += header.npart[i];
}
ngas = header.npart[0];
nstars = header.npart[4];
switch (blocknr)
{
case IO_POS:
case IO_VEL:
case IO_ACCEL:
case IO_TSTP:
case IO_ID:
case IO_POT:
return nall;
break;
case IO_MASS:
for(i = 0; i < 6; i++)
{
typelist[i] = 0;
if(All.MassTable[i] == 0 && header.npart[i] > 0)
typelist[i] = 1;
}
return ntot_withmasses;
break;
case IO_U:
case IO_RHO:
case IO_HSML:
case IO_DTENTR:
for(i = 1; i < 6; i++)
typelist[i] = 0;
return ngas;
break;
}
endrun(212);
return 0;
}
/*! This function tells whether or not a given block in the output file is
* present, depending on the type of simulation run and the compile-time
* options. If one wants to add a new output-block, this function should be
* augmented accordingly.
*/
int blockpresent(enum iofields blocknr)
{
#ifndef OUTPUTPOTENTIAL
if(blocknr == IO_POT)
return 0;
#endif
#ifndef OUTPUTACCELERATION
if(blocknr == IO_ACCEL)
return 0;
#endif
#ifndef OUTPUTCHANGEOFENTROPY
if(blocknr == IO_DTENTR)
return 0;
#endif
#ifndef OUTPUTTIMESTEP
if(blocknr == IO_TSTP)
return 0;
#endif
return 1; /* default: present */
}
/*! This function associates a short 4-character block name with each block
* number. This is stored in front of each block for snapshot
* FileFormat=2. If one wants to add a new output-block, this function should
* be augmented accordingly.
*/
void fill_Tab_IO_Labels(void)
{
enum iofields i;
for(i = 0; i < IO_NBLOCKS; i++)
switch (i)
{
case IO_POS:
strncpy(Tab_IO_Labels[IO_POS], "POS ", 4);
break;
case IO_VEL:
strncpy(Tab_IO_Labels[IO_VEL], "VEL ", 4);
break;
case IO_ID:
strncpy(Tab_IO_Labels[IO_ID], "ID ", 4);
break;
case IO_MASS:
strncpy(Tab_IO_Labels[IO_MASS], "MASS", 4);
break;
case IO_U:
strncpy(Tab_IO_Labels[IO_U], "U ", 4);
break;
case IO_RHO:
strncpy(Tab_IO_Labels[IO_RHO], "RHO ", 4);
break;
case IO_HSML:
strncpy(Tab_IO_Labels[IO_HSML], "HSML", 4);
break;
case IO_POT:
strncpy(Tab_IO_Labels[IO_POT], "POT ", 4);
break;
case IO_ACCEL:
strncpy(Tab_IO_Labels[IO_ACCEL], "ACCE", 4);
break;
case IO_DTENTR:
strncpy(Tab_IO_Labels[IO_DTENTR], "ENDT", 4);
break;
case IO_TSTP:
strncpy(Tab_IO_Labels[IO_TSTP], "TSTP", 4);
break;
}
}
/*! This function returns a descriptive character string that describes the
* name of the block when the HDF5 file format is used. If one wants to add
* a new output-block, this function should be augmented accordingly.
*/
void get_dataset_name(enum iofields blocknr, char *buf)
{
strcpy(buf, "default");
switch (blocknr)
{
case IO_POS:
strcpy(buf, "Coordinates");
break;
case IO_VEL:
strcpy(buf, "Velocities");
break;
case IO_ID:
strcpy(buf, "ParticleIDs");
break;
case IO_MASS:
strcpy(buf, "Masses");
break;
case IO_U:
strcpy(buf, "InternalEnergy");
break;
case IO_RHO:
strcpy(buf, "Density");
break;
case IO_HSML:
strcpy(buf, "SmoothingLength");
break;
case IO_POT:
strcpy(buf, "Potential");
break;
case IO_ACCEL:
strcpy(buf, "Acceleration");
break;
case IO_DTENTR:
strcpy(buf, "RateOfChangeOfEntropy");
break;
case IO_TSTP:
strcpy(buf, "TimeStep");
break;
}
}
/*! This function writes an actual snapshot file containing the data from
* processors 'writeTask' to 'lastTask'. 'writeTask' is the one that actually
* writes. Each snapshot file contains a header first, then particle
* positions, velocities and ID's. Particle masses are written only for
* those particle types with zero entry in MassTable. After that, first the
* internal energies u, and then the density is written for the SPH
* particles. If cooling is enabled, mean molecular weight and neutral
* hydrogen abundance are written for the gas particles. This is followed by
* the SPH smoothing length and further blocks of information, depending on
* included physics and compile-time flags. If HDF5 is used, the header is
* stored in a group called "/Header", and the particle data is stored
* separately for each particle type in groups calles "/PartType0",
* "/PartType1", etc. The sequence of the blocks is unimportant in this case.
*/
void write_file(char *fname, int writeTask, int lastTask)
{
int type, bytes_per_blockelement, npart, nextblock, typelist[6];
int n_for_this_task, ntask, n, p, pc, offset = 0, task;
int blockmaxlen, ntot_type[6], nn[6];
enum iofields blocknr;
int blksize;
MPI_Status status;
FILE *fd = 0;
#ifdef HAVE_HDF5
hid_t hdf5_file = 0, hdf5_grp[6], hdf5_headergrp = 0, hdf5_dataspace_memory;
hid_t hdf5_datatype = 0, hdf5_dataspace_in_file = 0, hdf5_dataset = 0;
herr_t hdf5_status;
hsize_t dims[2], count[2], start[2];
int rank, pcsum = 0;
char buf[500];
#endif
#define SKIP {my_fwrite(&blksize,sizeof(int),1,fd);}
/* determine particle numbers of each type in file */
if(ThisTask == writeTask)
{
for(n = 0; n < 6; n++)
ntot_type[n] = n_type[n];
for(task = writeTask + 1; task <= lastTask; task++)
{
MPI_Recv(&nn[0], 6, MPI_INT, task, TAG_LOCALN, MPI_COMM_WORLD, &status);
for(n = 0; n < 6; n++)
ntot_type[n] += nn[n];
}
for(task = writeTask + 1; task <= lastTask; task++)
MPI_Send(&ntot_type[0], 6, MPI_INT, task, TAG_N, MPI_COMM_WORLD);
}
else
{
MPI_Send(&n_type[0], 6, MPI_INT, writeTask, TAG_LOCALN, MPI_COMM_WORLD);
MPI_Recv(&ntot_type[0], 6, MPI_INT, writeTask, TAG_N, MPI_COMM_WORLD, &status);
}
/* fill file header */
for(n = 0; n < 6; n++)
{
header.npart[n] = ntot_type[n];
header.npartTotal[n] = (unsigned int) ntot_type_all[n];
header.npartTotalHighWord[n] = (unsigned int) (ntot_type_all[n] >> 32);
}
for(n = 0; n < 6; n++)
header.mass[n] = All.MassTable[n];
header.time = All.Time;
if(All.ComovingIntegrationOn)
header.redshift = 1.0 / All.Time - 1;
else
header.redshift = 0;
header.flag_sfr = 0;
header.flag_feedback = 0;
header.flag_cooling = 0;
header.flag_stellarage = 0;
header.flag_metals = 0;
#ifdef COOLING
header.flag_cooling = 1;
#endif
#ifdef SFR
header.flag_sfr = 1;
header.flag_feedback = 1;
#ifdef STELLARAGE
header.flag_stellarage = 1;
#endif
#ifdef METALS
header.flag_metals = 1;
#endif
#endif
header.num_files = All.NumFilesPerSnapshot;
header.BoxSize = All.BoxSize;
header.Omega0 = All.Omega0;
header.OmegaLambda = All.OmegaLambda;
header.HubbleParam = All.HubbleParam;
/* open file and write header */
if(ThisTask == writeTask)
{
if(All.SnapFormat == 3)
{
#ifdef HAVE_HDF5
sprintf(buf, "%s.hdf5", fname);
hdf5_file = H5Fcreate(buf, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
hdf5_headergrp = H5Gcreate(hdf5_file, "/Header", 0);
for(type = 0; type < 6; type++)
{
if(header.npart[type] > 0)
{
sprintf(buf, "/PartType%d", type);
hdf5_grp[type] = H5Gcreate(hdf5_file, buf, 0);
}
}
write_header_attributes_in_hdf5(hdf5_headergrp);
#endif
}
else
{
if(!(fd = fopen(fname, "w")))
{
printf("can't open file `%s' for writing snapshot.\n", fname);
endrun(123);
}
if(All.SnapFormat == 2)
{
blksize = sizeof(int) + 4 * sizeof(char);
SKIP;
my_fwrite("HEAD", sizeof(char), 4, fd);
nextblock = sizeof(header) + 2 * sizeof(int);
my_fwrite(&nextblock, sizeof(int), 1, fd);
SKIP;
}
blksize = sizeof(header);
SKIP;
my_fwrite(&header, sizeof(header), 1, fd);
SKIP;
}
}
ntask = lastTask - writeTask + 1;
for(blocknr = 0; blocknr < IO_NBLOCKS; blocknr++)
{
if(blockpresent(blocknr))
{
bytes_per_blockelement = get_bytes_per_blockelement(blocknr);
blockmaxlen = ((int) (All.BufferSize * 1024 * 1024)) / bytes_per_blockelement;
npart = get_particles_in_block(blocknr, &typelist[0]);
if(npart > 0)
{
if(ThisTask == writeTask)
{
if(All.SnapFormat == 1 || All.SnapFormat == 2)
{
if(All.SnapFormat == 2)
{
blksize = sizeof(int) + 4 * sizeof(char);
SKIP;
my_fwrite(Tab_IO_Labels[blocknr], sizeof(char), 4, fd);
nextblock = npart * bytes_per_blockelement + 2 * sizeof(int);
my_fwrite(&nextblock, sizeof(int), 1, fd);
SKIP;
}
blksize = npart * bytes_per_blockelement;
SKIP;
}
}
for(type = 0; type < 6; type++)
{
if(typelist[type])
{
#ifdef HAVE_HDF5
if(ThisTask == writeTask && All.SnapFormat == 3 && header.npart[type] > 0)
{
switch (get_datatype_in_block(blocknr))
{
case 0:
hdf5_datatype = H5Tcopy(H5T_NATIVE_UINT);
break;
case 1:
hdf5_datatype = H5Tcopy(H5T_NATIVE_FLOAT);
break;
case 2:
hdf5_datatype = H5Tcopy(H5T_NATIVE_UINT64);
break;
}
dims[0] = header.npart[type];
dims[1] = get_values_per_blockelement(blocknr);
if(dims[1] == 1)
rank = 1;
else
rank = 2;
get_dataset_name(blocknr, buf);
hdf5_dataspace_in_file = H5Screate_simple(rank, dims, NULL);
hdf5_dataset =
H5Dcreate(hdf5_grp[type], buf, hdf5_datatype, hdf5_dataspace_in_file,
H5P_DEFAULT);
pcsum = 0;
}
#endif
for(task = writeTask, offset = 0; task <= lastTask; task++)
{
if(task == ThisTask)
{
n_for_this_task = n_type[type];
for(p = writeTask; p <= lastTask; p++)
if(p != ThisTask)
MPI_Send(&n_for_this_task, 1, MPI_INT, p, TAG_NFORTHISTASK, MPI_COMM_WORLD);
}
else
MPI_Recv(&n_for_this_task, 1, MPI_INT, task, TAG_NFORTHISTASK, MPI_COMM_WORLD,
&status);
while(n_for_this_task > 0)
{
pc = n_for_this_task;
if(pc > blockmaxlen)
pc = blockmaxlen;
if(ThisTask == task)
fill_write_buffer(blocknr, &offset, pc, type);
if(ThisTask == writeTask && task != writeTask)
MPI_Recv(CommBuffer, bytes_per_blockelement * pc, MPI_BYTE, task,
TAG_PDATA, MPI_COMM_WORLD, &status);
if(ThisTask != writeTask && task == ThisTask)
MPI_Ssend(CommBuffer, bytes_per_blockelement * pc, MPI_BYTE, writeTask,
TAG_PDATA, MPI_COMM_WORLD);
if(ThisTask == writeTask)
{
if(All.SnapFormat == 3)
{
#ifdef HAVE_HDF5
start[0] = pcsum;
start[1] = 0;
count[0] = pc;
count[1] = get_values_per_blockelement(blocknr);
pcsum += pc;
H5Sselect_hyperslab(hdf5_dataspace_in_file, H5S_SELECT_SET,
start, NULL, count, NULL);
dims[0] = pc;
dims[1] = get_values_per_blockelement(blocknr);
hdf5_dataspace_memory = H5Screate_simple(rank, dims, NULL);
hdf5_status =
H5Dwrite(hdf5_dataset, hdf5_datatype, hdf5_dataspace_memory,
hdf5_dataspace_in_file, H5P_DEFAULT, CommBuffer);
H5Sclose(hdf5_dataspace_memory);
#endif
}
else
my_fwrite(CommBuffer, bytes_per_blockelement, pc, fd);
}
n_for_this_task -= pc;
}
}
#ifdef HAVE_HDF5
if(ThisTask == writeTask && All.SnapFormat == 3 && header.npart[type] > 0)
{
if(All.SnapFormat == 3)
{
H5Dclose(hdf5_dataset);
H5Sclose(hdf5_dataspace_in_file);
H5Tclose(hdf5_datatype);
}
}
#endif
}
}
if(ThisTask == writeTask)
{
if(All.SnapFormat == 1 || All.SnapFormat == 2)
SKIP;
}
}
}
}
if(ThisTask == writeTask)
{
if(All.SnapFormat == 3)
{
#ifdef HAVE_HDF5
for(type = 5; type >= 0; type--)
if(header.npart[type] > 0)
H5Gclose(hdf5_grp[type]);
H5Gclose(hdf5_headergrp);
H5Fclose(hdf5_file);
#endif
}
else
fclose(fd);
}
}
/*! This function writes the header information in case HDF5 is selected as
* file format.
*/
#ifdef HAVE_HDF5
void write_header_attributes_in_hdf5(hid_t handle)
{
hsize_t adim[1] = { 6 };