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/*
* ADIOS is freely available under the terms of the BSD license described
* in the COPYING file in the top level directory of this source distribution.
*
* Copyright (c) 2008 - 2009. UT-BATTELLE, LLC. All rights reserved.
*/
#include <stdio.h>
#include <string.h>
#include "mpi.h"
#include "adios.h"
const int NX = 10;
const int NY = 5;
const char diagfilename[] = "diag.bp";
const char diag2filename[] = "diag2.bp";
const char ckptfilename[] = "ckpt.bp";
const MPI_Comm comm = MPI_COMM_WORLD;
int rank, size;
void write_diag (int step, double * p)
{
int64_t adios_handle;
if (rank==0) printf(" write diagnostics\n");
if (step==1)
adios_open (&adios_handle, "diagnostics", diagfilename, "w", comm);
else
adios_open (&adios_handle, "diagnostics", diagfilename, "a", comm);
adios_write (adios_handle, "NY", &NY);
adios_write (adios_handle, "size", &size);
adios_write (adios_handle, "rank", &rank);
adios_write (adios_handle, "pressure", p);
adios_close (adios_handle);
}
void write_diag2 (int step, double * t)
{
int64_t adios_handle;
if (rank==0) printf(" write diag2\n");
if (step==1)
adios_open (&adios_handle, "diag2", diag2filename, "w", comm);
else
adios_open (&adios_handle, "diag2", diag2filename, "a", comm);
adios_write (adios_handle, "size", &size);
adios_write (adios_handle, "rank", &rank);
adios_write (adios_handle, "t0", t);
adios_close (adios_handle);
}
void write_checkpoint (int step, double * p, double *t)
{
int64_t adios_handle;
if (rank==0) printf(" Checkpointing at step %d\n", step);
adios_open (&adios_handle, "checkpoint", ckptfilename, "w", comm);
adios_write (adios_handle, "NX", &NX);
adios_write (adios_handle, "NY", &NY);
adios_write (adios_handle, "size", &size);
adios_write (adios_handle, "rank", &rank);
adios_write (adios_handle, "step", &step);
adios_write (adios_handle, "temperature", t);
adios_write (adios_handle, "pressure", p);
adios_close (adios_handle);
}
int main (int argc, char ** argv)
{
int i, it;
double t[NX];
double p[NY];
MPI_Init (&argc, &argv);
MPI_Comm_rank (comm, &rank);
MPI_Comm_size (comm, &size);
adios_init ("time_aggregation.xml", comm);
for (it = 1; it <= 100; it++)
{
if (rank==0) printf("Timestep %d...\n", it);
for (i = 0; i < NX; i++)
t[i] = it*1000.0 + rank*NX + i;
for (i = 0; i < NY; i++)
p[i] = it*1000.0 + rank*NY + i;
write_diag(it, p);
write_diag2(it, t);
if ( it%30 == 0) {
write_checkpoint(it, p, t);
}
MPI_Barrier (comm);
if (rank==0) printf(" step completed\n");
}
MPI_Barrier (comm);
adios_finalize (rank);
MPI_Finalize ();
return 0;
}
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