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#if HAVE_CONFIG_H
# include "config.h"
#endif
#if HAVE_STDIO_H
# include <stdio.h>
#endif
#if HAVE_MATH_H
# include <math.h>
#endif
#include "ga.h"
#include "macdecls.h"
#include "mp3.h"
#define N 100 /* dimension of matrices */
void do_work()
{
int ONE=1 ; /* useful constants */
int g_a, g_b;
int n=N, type=MT_F_DBL;
int me=GA_Nodeid(), nproc=GA_Nnodes();
int i, row;
int dims[2]={N,N};
int lo[2], hi[2], ld;
/* Note: on all current platforms DoublePrecision == double */
double buf[N], err, alpha, beta;
if(me==0)printf("Creating matrix A\n");
g_a = NGA_Create(type, 2, dims, "A", NULL);
if(!g_a) GA_Error("create failed: A",n);
if(me==0)printf("OK\n");
if(me==0)printf("Creating matrix B\n");
/* create matrix B so that it has dims and distribution of A*/
g_b = GA_Duplicate(g_a, "B");
if(! g_b) GA_Error("duplicate failed",n);
if(me==0)printf("OK\n");
GA_Zero(g_a); /* zero the matrix */
if(me==0)printf("Initializing matrix A\n");
/* fill in matrix A with random values in range 0.. 1 */
lo[1]=0; hi[1]=n-1;
for(row=me; row<n; row+= nproc){
/* each process works on a different row in MIMD style */
lo[0]=hi[0]=row;
for(i=0; i<n; i++) buf[i]=sin((double)i + 0.1*(row+1));
NGA_Put(g_a, lo, hi, buf, &n);
}
if(me==0)printf("Symmetrizing matrix A\n");
GA_Symmetrize(g_a); /* symmetrize the matrix A = 0.5*(A+A') */
/* check if A is symmetric */
if(me==0)printf("Checking if matrix A is symmetric\n");
GA_Transpose(g_a, g_b); /* B=A' */
alpha=1.; beta=-1.;
GA_Add(&alpha, g_a, &beta, g_b, g_b); /* B= A - B */
err= GA_Ddot(g_b, g_b);
if(me==0)printf("Error=%f\n",(double)err);
if(me==0)printf("\nChecking atomic accumulate \n");
GA_Zero(g_a); /* zero the matrix */
for(i=0; i<n; i++) buf[i]=(double)i;
/* everybody accumulates to the same location/row */
alpha = 1.0;
row = n/2;
lo[0]=hi[0]=row;
lo[1]=0; hi[1]=n-1;
ld = hi[1]-lo[1]+1;
NGA_Acc(g_a, lo, hi, buf, &ld, &alpha );
GA_Sync();
if(me==0){ /* node 0 is checking the result */
NGA_Get(g_a, lo, hi, buf,&ld);
for(i=0; i<n; i++) if(buf[i] != (double)nproc*i)
GA_Error("failed: column=",i);
printf("OK\n\n");
}
GA_Destroy(g_a);
GA_Destroy(g_b);
}
int main(int argc, char **argv)
{
int heap=20000, stack=20000;
int me, nproc;
MP_INIT(argc,argv);
GA_INIT(argc,argv); /* initialize GA */
me=GA_Nodeid();
nproc=GA_Nnodes();
if(me==0) {
if(GA_Uses_fapi())GA_Error("Program runs with C array API only",1);
printf("Using %ld processes\n",(long)nproc);
fflush(stdout);
}
heap /= nproc;
stack /= nproc;
if(! MA_init(MT_F_DBL, stack, heap))
GA_Error("MA_init failed",stack+heap); /* initialize memory allocator*/
do_work();
if (me == 0) printf("All tests successful\n");
GA_Terminate();
MP_FINALIZE();
return 0;
}
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