int main( int argc, char *argv[] )
{
int errs = 0;
int dims[4], nnodes;
MTest_Init( &argc, &argv );
/* 2 dimensional tests */
for (nnodes=1; nnodes <= 32; nnodes = nnodes * 2) {
dims[0] = 0;
dims[1] = nnodes;
MPI_Dims_create( nnodes, 2, dims );
if (prodof(2, dims) != nnodes) {
errs++;
printf( "Dims_create returned the wrong decomposition. " );
printf( "Is [%d x %d], should be 1 x %d\n", dims[0], dims[1],
nnodes );
}
/* Try calling Dims_create with nothing to do (all dimensions
specified) */
dims[0] = 1;
dims[1] = nnodes;
MPI_Dims_create( nnodes, 2, dims );
if (prodof(2, dims) != nnodes) {
errs++;
printf( "Dims_create returned the wrong decomposition (all given). " );
printf( "Is [%d x %d], should be 1 x %d\n", dims[0], dims[1],
nnodes );
}
}
/* 4 dimensional tests */
for (nnodes=4; nnodes <= 32; nnodes = nnodes * 2) {
dims[0] = 0;
dims[1] = nnodes/2;
dims[2] = 0;
dims[3] = 2;
MPI_Dims_create( nnodes, 4, dims );
if (prodof(4, dims) != nnodes) {
errs++;
printf( "Dims_create returned the wrong decomposition. " );
printf( "Is [%d x %d x %d x %d], should be 1 x %d x 1 x 2\n",
dims[0], dims[1], dims[2], dims[3],
nnodes/2 );
}
/* Try calling Dims_create with nothing to do (all dimensions
specified) */
dims[0] = 1;
dims[1] = nnodes/2;
dims[2] = 1;
dims[3] = 2;
MPI_Dims_create( nnodes, 4, dims );
if (prodof(4, dims) != nnodes) {
errs++;
printf( "Dims_create returned the wrong decomposition (all given). " );
printf( "Is [%d x %d x %d x %d], should be 1 x %d x 1 x 2\n",
dims[0], dims[1], dims[2], dims[3],
nnodes/2 );
}
}
MTest_Finalize( errs );
MPI_Finalize();
return 0;
}
int main( int argc, char *argv[] )
{
int errs = 0;
int dims[4], nnodes, ndims;
MTest_Init( &argc, &argv );
/* Test multiple dims create values. For each, make sure that the
product of dims is the number of input nodes */
nnodes = 2*3*5*7*11;
ndims = 2;
dims[0] = dims[1] = 0;
MPI_Dims_create( nnodes, ndims, dims );
if (prodof(ndims,dims) != nnodes) {
errs++;
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
if (increasing( ndims, dims )) {
errs++;
printf( "dims create returned a decomposition with increasing dimensions (see MPI-1 standard section 6.5)\n" );
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
/* Test multiple dims create values. For each, make sure that the
product of dims is the number of input nodes */
nnodes = 2*7;
ndims = 2;
dims[0] = dims[1] = 0;
MPI_Dims_create( nnodes, ndims, dims );
if (prodof(ndims,dims) != nnodes) {
errs++;
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
if (increasing( ndims, dims )) {
errs++;
printf( "dims create returned a decomposition with increasing dimensions (see MPI-1 standard section 6.5)\n" );
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
nnodes = 2*2*3*3*5*7*11;
ndims = 2;
dims[0] = dims[1] = 0;
MPI_Dims_create( nnodes, ndims, dims );
if (prodof(ndims,dims) != nnodes) {
errs++;
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
if (increasing( ndims, dims )) {
errs++;
printf( "dims create returned a decomposition with increasing dimensions (see MPI-1 standard section 6.5)\n" );
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
nnodes = 11;
ndims = 2;
dims[0] = dims[1] = 0;
MPI_Dims_create( nnodes, ndims, dims );
if (prodof(ndims,dims) != nnodes) {
errs++;
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
if (increasing( ndims, dims )) {
errs++;
printf( "dims create returned a decomposition with increasing dimensions (see MPI-1 standard section 6.5)\n" );
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
nnodes = 5*7*11;
ndims = 4;
dims[0] = dims[1] = dims[2] = dims[3] = 0;
MPI_Dims_create( nnodes, ndims, dims );
if (prodof(ndims,dims) != nnodes) {
errs++;
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
if (increasing( ndims, dims )) {
errs++;
printf( "dims create returned a decomposition with increasing dimensions (see MPI-1 standard section 6.5)\n" );
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
nnodes = 64;
ndims = 4;
dims[0] = dims[1] = dims[2] = dims[3] = 0;
MPI_Dims_create( nnodes, ndims, dims );
if (prodof(ndims,dims) != nnodes) {
errs++;
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
if (increasing( ndims, dims )) {
errs++;
printf( "dims create returned a decomposition with increasing dimensions (see MPI-1 standard section 6.5)\n" );
printf( "dims create returned the wrong decomposition for %d in %d dims\n",
nnodes, ndims );
}
MTest_Finalize( errs );
MPI_Finalize();
return 0;
}
