53 lines
1.6 KiB
C
53 lines
1.6 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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#include "H5hut.h"
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#define DEFAULT_VERBOSITY H5_VERBOSE_DEFAULT
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#define FNAME "example_strided.h5"
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int
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main (
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int argc, char* argv[]
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){
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h5_int64_t verbosity = DEFAULT_VERBOSITY;
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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 rank = 0;
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MPI_Comm_rank (comm, &rank);
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H5AbortOnError ();
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H5SetVerbosityLevel (verbosity);
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// open file and go to first step
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h5_file_t file = H5OpenFile (FNAME, H5_O_RDONLY, H5_PROP_DEFAULT);
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H5SetStep (file, 0);
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// Get number of particles in datasets and allocate memory
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h5_int64_t num_particles = H5PartGetNumParticles (file);
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h5_float64_t* data = calloc (6*num_particles, sizeof (*data));
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// set number of particles and memory stride
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H5PartSetNumParticlesStrided (file, num_particles, 6);
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// read data
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H5PartReadDataFloat64 (file, "x", data+0);
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H5PartReadDataFloat64 (file, "y", data+1);
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H5PartReadDataFloat64 (file, "z", data+2);
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H5PartReadDataFloat64 (file, "px", data+3);
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H5PartReadDataFloat64 (file, "py", data+4);
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H5PartReadDataFloat64 (file, "pz", data+5);
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H5CloseFile (file);
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return MPI_Finalize ();
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}
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