gsell
542daf7fc2
- define dummy MPI macros to be used in serial compilation, closing #10 - cleanup some "unused variable" warnings - fix some format warnings, using C99 format macros
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/*
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Copyright (c) 2006-2015, The Regents of the University of California,
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through Lawrence Berkeley National Laboratory (subject to receipt of any
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required approvals from the U.S. Dept. of Energy) and the Paul Scherrer
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Institut (Switzerland). All rights reserved.
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License: see file COPYING in top level of source distribution.
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*/
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/*
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Note:
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Running this example on more than one core is possible but the result
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might not be what you expect. Please read the HDF5 documentation about
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the VFD core driver.
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*/
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#include "H5hut.h"
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#include "examples.h"
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#include <stdlib.h>
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// name of input file
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const char* fname = "example_core_vfd.h5";
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// H5hut verbosity level
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const h5_int64_t h5_verbosity = H5_VERBOSE_DEFAULT;
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int
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main (
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int argc,
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char* argv[]
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){
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// initialize MPI & H5hut
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MPI_Init (&argc, &argv);
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MPI_Comm comm = MPI_COMM_WORLD;
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int comm_rank = 0;
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MPI_Comm_rank (comm, &comm_rank);
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H5AbortOnError ();
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H5SetVerbosityLevel (h5_verbosity);
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// open file and create first step
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h5_prop_t prop = H5CreateFileProp ();
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H5SetPropFileCoreVFD (prop, 0);
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h5_file_t file = H5OpenFile (fname, H5_O_RDONLY, prop);
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H5SetStep (file, 0);
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// with core cfd we read the hole file on all cores!
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h5_int64_t num_particles = H5PartGetNumParticles (file);
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printf ("[proc %d]: particles in view: %lld\n", comm_rank, (long long)num_particles);
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// read and print data
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h5_int32_t* data = calloc (num_particles, sizeof (*data));
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H5PartReadDataInt32 (file, "data", data);
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for (int i = 0; i < num_particles; i++) {
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printf ("[proc %d]: local index = %d, value = %d\n",
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comm_rank, i, data[i]);
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}
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// cleanup
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free (data);
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H5CloseFile (file);
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MPI_Finalize ();
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return H5_SUCCESS;
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}
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