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/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@author Mark Gates
*/
#include <stdlib.h>
#include <stdio.h>
// tests internal routines: magma_{set,get}_lapack_numthreads, magma_get_parallel_numthreads
// so include magma_internal.h instead of magma_v2.h
#include "../control/magma_internal.h" // internal header
/******************************************************************************/
// warn( condition ) is like assert, but doesn't abort. Also counts number of failures.
magma_int_t gFailures = 0;
void warn_helper( int cond, const char* str, const char* file, int line )
{
if ( ! cond ) {
printf( "*** testing_auxiliary error: %s:%d: assertion %s failed\n", file, line, str );
gFailures += 1;
}
}
#define warn(x) warn_helper( (x), #x, __FILE__, __LINE__ )
/******************************************************************************/
void test_num_gpus()
{
printf( "%%=====================================================================\n%s\n", __func__ );
magma_int_t ngpu;
magma_device_t devices[ MagmaMaxGPUs ];
magma_getdevices( devices, MagmaMaxGPUs, &ngpu );
magma_int_t maxgpu = min( ngpu, MagmaMaxGPUs );
printf( "$MAGMA_NUM_GPUS ngpu expect\n" );
printf( "%%==================================\n" );
#ifndef _MSC_VER // not Windows
unsetenv("MAGMA_NUM_GPUS");
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", "not set", (long long) ngpu, (long long) 1 );
warn( ngpu == 1 );
setenv("MAGMA_NUM_GPUS", "", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 1 );
warn( ngpu == 1 );
setenv("MAGMA_NUM_GPUS", "-1", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 1 );
warn( ngpu == 1 );
setenv("MAGMA_NUM_GPUS", "2junk", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 1 );
warn( ngpu == 1 );
setenv("MAGMA_NUM_GPUS", "0", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 1 );
warn( ngpu == 1 );
setenv("MAGMA_NUM_GPUS", "1", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 1 );
warn( ngpu == 1 );
setenv("MAGMA_NUM_GPUS", "2", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 2 );
warn( ngpu == min( 2, maxgpu ) );
setenv("MAGMA_NUM_GPUS", "4", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 4 );
warn( ngpu == min( 4, maxgpu ) );
setenv("MAGMA_NUM_GPUS", "8", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 8 );
warn( ngpu == min( 8, maxgpu ) );
setenv("MAGMA_NUM_GPUS", "16", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) 16 );
warn( ngpu == min( 16, maxgpu ) );
setenv("MAGMA_NUM_GPUS", "1000", 1 );
ngpu = magma_num_gpus();
printf( "%-18s %7lld %6lld (maxgpu)\n\n", getenv("MAGMA_NUM_GPUS"), (long long) ngpu, (long long) maxgpu );
warn( ngpu == min( 1000, maxgpu ) );
#endif // not Windows
}
/******************************************************************************/
void test_num_threads()
{
printf( "%%=====================================================================\n%s\n", __func__ );
// test that getting & setting numthreads works
magma_int_t p_nthread_orig = magma_get_parallel_numthreads();
magma_int_t l_nthread_orig = magma_get_lapack_numthreads();
printf( "get; parallel_numthread=%2lld, lapack_numthread=%2lld\n",
(long long) p_nthread_orig, (long long) l_nthread_orig );
magma_set_lapack_numthreads( 4 );
magma_int_t p_nthread = magma_get_parallel_numthreads();
magma_int_t l_nthread = magma_get_lapack_numthreads();
printf( "set( 4); parallel_numthread=%2lld, lapack_numthread=%2lld (expect 4)\n",
(long long) p_nthread, (long long) l_nthread );
warn( p_nthread == p_nthread_orig );
warn( l_nthread == 4 );
magma_set_lapack_numthreads( 1 );
p_nthread = magma_get_parallel_numthreads();
l_nthread = magma_get_lapack_numthreads();
printf( "set( 1); parallel_numthread=%2lld, lapack_numthread=%2lld (expect 1)\n",
(long long) p_nthread, (long long) l_nthread );
warn( p_nthread == p_nthread_orig );
warn( l_nthread == 1 );
magma_set_lapack_numthreads( 8 );
p_nthread = magma_get_parallel_numthreads();
l_nthread = magma_get_lapack_numthreads();
printf( "set( 8); parallel_numthread=%2lld, lapack_numthread=%2lld (expect 8)\n",
(long long) p_nthread, (long long) l_nthread );
warn( p_nthread == p_nthread_orig );
warn( l_nthread == 8 );
magma_set_lapack_numthreads( l_nthread_orig );
p_nthread = magma_get_parallel_numthreads();
l_nthread = magma_get_lapack_numthreads();
printf( "set(%2lld); parallel_numthread=%2lld, lapack_numthread=%2lld (expect %2lld)\n",
(long long) l_nthread_orig, (long long) p_nthread, (long long) l_nthread, (long long) l_nthread_orig );
warn( p_nthread == p_nthread_orig );
warn( l_nthread == l_nthread_orig );
#ifndef _MSC_VER // not Windows
// test that parsing MAGMA_NUM_THREADS works
// TODO need some way to get ncores. This is circular: assume with huge
// NUM_THREADS that the routine gives the ncores. The user can verify.
setenv("MAGMA_NUM_THREADS", "10000", 1 );
magma_int_t ncores = magma_get_parallel_numthreads();
magma_int_t omp_threads = ncores;
const char* omp_str = getenv("OMP_NUM_THREADS");
if ( omp_str != NULL ) {
omp_threads = atoi( omp_str );
}
printf( "\nusing ncores=%lld, omp_num_threads=%lld\n\n", (long long) ncores, (long long) omp_threads );
printf( "$MAGMA_NUM_THREADS nthread expect\n" );
printf( "%%==================================\n" );
unsetenv("MAGMA_NUM_THREADS");
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld (omp_threads)\n\n", "not set", (long long) p_nthread, (long long) omp_threads );
warn( p_nthread == omp_threads );
setenv("MAGMA_NUM_THREADS", "", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 1 );
warn( p_nthread == 1 );
setenv("MAGMA_NUM_THREADS", "-1", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 1 );
warn( p_nthread == 1 );
setenv("MAGMA_NUM_THREADS", "2junk", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 1 );
warn( p_nthread == 1 );
setenv("MAGMA_NUM_THREADS", "0", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 1 );
warn( p_nthread == 1 );
setenv("MAGMA_NUM_THREADS", "1", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 1 );
warn( p_nthread == 1 );
setenv("MAGMA_NUM_THREADS", "2", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 2 );
warn( p_nthread == min( 2, ncores ) );
setenv("MAGMA_NUM_THREADS", "4", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 4 );
warn( p_nthread == min( 4, ncores ) );
setenv("MAGMA_NUM_THREADS", "8", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 8 );
warn( p_nthread == min( 8, ncores ) );
setenv("MAGMA_NUM_THREADS", "16", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) 16 );
warn( p_nthread == min( 16, ncores ) );
setenv("MAGMA_NUM_THREADS", "1000", 1 );
p_nthread = magma_get_parallel_numthreads();
printf( "%-18s %7lld %6lld (ncores)\n\n", getenv("MAGMA_NUM_THREADS"), (long long) p_nthread, (long long) ncores );
warn( p_nthread == min( 1000, ncores ) );
#endif // not Windows
}
/******************************************************************************/
void test_xerbla()
{
printf( "%%=====================================================================\n%s\n", __func__ );
magma_int_t info;
info = -MAGMA_ERR_DEVICE_ALLOC; magma_xerbla( __func__, -(info) );
info = -MAGMA_ERR_HOST_ALLOC; magma_xerbla( __func__, -(info) );
info = -MAGMA_ERR; magma_xerbla( __func__, -(info) );
info = 3; magma_xerbla( __func__, -(info) );
info = 2; magma_xerbla( __func__, -(info) );
info = 1; magma_xerbla( __func__, -(info) );
info = 0; magma_xerbla( __func__, -(info) );
info = -1; magma_xerbla( __func__, -(info) );
info = -2; magma_xerbla( __func__, -(info) );
info = -3; magma_xerbla( __func__, -(info) );
info = MAGMA_ERR; magma_xerbla( __func__, -(info) );
info = MAGMA_ERR_HOST_ALLOC; magma_xerbla( __func__, -(info) );
info = MAGMA_ERR_DEVICE_ALLOC; magma_xerbla( __func__, -(info) );
}
/******************************************************************************/
void test_indices()
{
printf( "%%=====================================================================\n%s\n", __func__ );
// example given in magma_indices_1D_bcyclic() docs
magma_int_t dj0=0, dj1=0;
// -----
magma_indices_1D_bcyclic( 10, 3, 0, 13, 69, &dj0, &dj1 );
warn( dj0 == 10 );
warn( dj1 == 29 );
magma_indices_1D_bcyclic( 10, 3, 1, 13, 69, &dj0, &dj1 );
warn( dj0 == 3 );
warn( dj1 == 20 );
magma_indices_1D_bcyclic( 10, 3, 2, 13, 69, &dj0, &dj1 );
warn( dj0 == 0 );
warn( dj1 == 20 );
// -----
magma_indices_1D_bcyclic( 10, 3, 0, 13, 70, &dj0, &dj1 );
warn( dj0 == 10 );
warn( dj1 == 30 );
magma_indices_1D_bcyclic( 10, 3, 1, 13, 70, &dj0, &dj1 );
warn( dj0 == 3 );
warn( dj1 == 20 );
magma_indices_1D_bcyclic( 10, 3, 2, 13, 70, &dj0, &dj1 );
warn( dj0 == 0 );
warn( dj1 == 20 );
// -----
magma_indices_1D_bcyclic( 10, 3, 0, 13, 71, &dj0, &dj1 );
warn( dj0 == 10 );
warn( dj1 == 30 );
magma_indices_1D_bcyclic( 10, 3, 1, 13, 71, &dj0, &dj1 );
warn( dj0 == 3 );
warn( dj1 == 21 );
magma_indices_1D_bcyclic( 10, 3, 2, 13, 71, &dj0, &dj1 );
warn( dj0 == 0 );
warn( dj1 == 20 );
// -----
magma_indices_1D_bcyclic( 10, 3, 0, 13, 72, &dj0, &dj1 );
warn( dj0 == 10 );
warn( dj1 == 30 );
magma_indices_1D_bcyclic( 10, 3, 1, 13, 72, &dj0, &dj1 );
warn( dj0 == 3 );
warn( dj1 == 22 );
magma_indices_1D_bcyclic( 10, 3, 2, 13, 72, &dj0, &dj1 );
warn( dj0 == 0 );
warn( dj1 == 20 );
}
/******************************************************************************/
int main( int argc, char** argv )
{
magma_init();
test_num_gpus();
test_num_threads();
test_xerbla();
test_indices();
if ( gFailures > 0 ) {
printf( "\n*** %lld tests failed.\n", (long long) gFailures );
}
else {
printf( "\nAll tests passed.\n" );
}
magma_finalize();
return 0;
}
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