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#include <limits.h>
#include <math.h>
#include <stdlib.h>
#include <check.h>
#include <mpi.h>
#include "gpuarray/array.h"
#include "gpuarray/buffer.h"
#include "gpuarray/buffer_collectives.h"
#include "gpuarray/collectives.h"
#include "gpuarray/error.h"
#include "gpuarray/types.h"
#define ROOT_RANK 0
#define ND 2
#define ROWS 32
#define COLS 16
extern gpucontext* ctx;
extern gpucomm* comm;
extern int comm_ndev;
extern int comm_rank;
extern void setup_comm(void);
extern void teardown_comm(void);
#define STR(x) _STR(x)
#define _STR(x) #x
#define COUNT_ERRORS(A, B, M, N, res) \
do { \
int loci, locj; \
res = 0; \
for (loci = 0; loci < (M); ++loci) { \
for (locj = 0; locj < (N); ++locj) { \
if ((A)[loci][locj] != (B)[loci][locj]) \
res++; \
} \
} \
} while (0)
/*******************************************************************************
* Test array functions for collective operations *
*******************************************************************************/
#define INIT_ARRAYS(inrows, incols, outrows, outcols) \
int(*A)[(incols)]; \
int(*RES)[(outcols)]; \
int(*EXP)[(outcols)]; \
size_t indims[ND]; \
size_t outdims[ND]; \
const ssize_t outstrds[ND] = {sizeof(*RES), sizeof(int)}; \
int err; \
size_t i, j, outsize; \
GpuArray Adev; \
GpuArray RESdev; \
\
A = (int(*)[(incols)])calloc((inrows), sizeof(*A)); \
if (A == NULL) \
ck_abort_msg("system memory allocation failed"); \
RES = (int(*)[(outcols)])calloc((outrows), sizeof(*RES)); \
if (RES == NULL) \
ck_abort_msg("system memory allocation failed"); \
EXP = (int(*)[(outcols)])calloc((outrows), sizeof(*EXP)); \
if (EXP == NULL) \
ck_abort_msg("system memory allocation failed"); \
indims[0] = (inrows); \
indims[1] = (incols); \
outdims[0] = (outrows); \
outdims[1] = (outcols); \
outsize = outdims[0] * outstrds[0]; \
\
for (i = 0; i < indims[0]; ++i) \
for (j = 0; j < indims[1]; ++j) \
A[i][j] = comm_rank + 2; \
\
err = GpuArray_empty(&Adev, ctx, GA_INT, ND, indims, GA_C_ORDER); \
ck_assert_int_eq(err, GA_NO_ERROR); \
err = GpuArray_write(&Adev, A, sizeof(*A) * inrows); \
ck_assert_int_eq(err, GA_NO_ERROR); \
err = GpuArray_empty(&RESdev, ctx, GA_INT, ND, outdims, GA_C_ORDER); \
ck_assert_int_eq(err, GA_NO_ERROR);
#define DESTROY_ARRAYS() \
GpuArray_clear(&RESdev); \
GpuArray_clear(&Adev); \
free(A); \
free(RES); \
free(EXP);
/**
* \note Untested for `not proper element count` , `not agreeing typecode`, `not
* aligned`.
*/
START_TEST(test_GpuArray_reduce) {
int res;
INIT_ARRAYS(ROWS, COLS, ROWS, COLS);
if (comm_rank == ROOT_RANK) {
err = GpuArray_reduce(&Adev, &RESdev, GA_SUM, ROOT_RANK, comm);
ck_assert_int_eq(err, GA_NO_ERROR);
GpuArray_sync(&RESdev);
GpuArray_sync(&Adev);
} else {
err = GpuArray_reduce_from(&Adev, GA_SUM, ROOT_RANK, comm);
ck_assert_int_eq(err, GA_NO_ERROR);
GpuArray_sync(&Adev);
}
err = MPI_Reduce(A, EXP, ROWS * COLS, MPI_INT, MPI_SUM, ROOT_RANK,
MPI_COMM_WORLD);
ck_assert_msg(err == MPI_SUCCESS, "openmpi error: cannot produced expected");
if (comm_rank == ROOT_RANK) {
err = GpuArray_read(RES, outsize, &RESdev);
ck_assert_int_eq(err, GA_NO_ERROR);
COUNT_ERRORS(RES, EXP, ROWS, COLS, res);
ck_assert_msg(res == 0,
"GpuArray_reduce with %s op produced errors in %d places",
STR(GA_SUM), res);
}
DESTROY_ARRAYS();
}
END_TEST
/**
* \note Untested for: `not proper element count` , `not agreeing typecode`,
* `not
* aligned`.
*/
START_TEST(test_GpuArray_all_reduce) {
int res;
INIT_ARRAYS(ROWS, COLS, ROWS, COLS);
err = GpuArray_all_reduce(&Adev, &RESdev, GA_SUM, comm);
ck_assert_int_eq(err, GA_NO_ERROR);
GpuArray_sync(&RESdev);
GpuArray_sync(&Adev);
err = MPI_Allreduce(A, EXP, ROWS * COLS, MPI_INT, MPI_SUM, MPI_COMM_WORLD);
ck_assert_msg(err == MPI_SUCCESS, "openmpi error: cannot produced expected");
err = GpuArray_read(RES, outsize, &RESdev);
ck_assert_int_eq(err, GA_NO_ERROR);
COUNT_ERRORS(RES, EXP, ROWS, COLS, res);
ck_assert_msg(res == 0,
"GpuArray_all_reduce with %s op produced errors in %d places",
STR(GA_SUM), res);
DESTROY_ARRAYS();
}
END_TEST
/**
* \note Untested for `not proper element count` , `not agreeing typecode`, `not
* aligned`.
*/
START_TEST(test_GpuArray_reduce_scatter) {
int res;
int* recvcounts;
// In order for C contiguous arrays to be combined/split successfully they
// should
// split along the smallest axis (the one with the bigger stride).
INIT_ARRAYS(ROWS, COLS, ROWS / comm_ndev, COLS);
err = GpuArray_reduce_scatter(&Adev, &RESdev, GA_SUM, comm);
ck_assert_int_eq(err, GA_NO_ERROR);
GpuArray_sync(&RESdev);
GpuArray_sync(&Adev);
recvcounts = (int*)malloc(comm_ndev * sizeof(int));
if (recvcounts == NULL)
ck_abort_msg("system memory allocation failed");
for (i = 0; i < (size_t)comm_ndev; ++i)
recvcounts[i] = ROWS * COLS / comm_ndev;
err =
MPI_Reduce_scatter(A, EXP, recvcounts, MPI_INT, MPI_SUM, MPI_COMM_WORLD);
free(recvcounts);
ck_assert_msg(err == MPI_SUCCESS, "openmpi error: cannot produced expected");
err = GpuArray_read(RES, outsize, &RESdev);
ck_assert_int_eq(err, GA_NO_ERROR);
COUNT_ERRORS(RES, EXP, ROWS / comm_ndev, COLS, res);
ck_assert_msg(
res == 0,
"GpuArray_reduce_scatter with %s op produced errors in %d places",
STR(GA_SUM), res);
DESTROY_ARRAYS();
}
END_TEST
/**
* \note Untested for `not aligned`.
*/
START_TEST(test_GpuArray_broadcast) {
int res;
INIT_ARRAYS(ROWS, COLS, ROWS, COLS);
for (i = 0; i < indims[0]; ++i)
for (j = 0; j < indims[1]; ++j)
EXP[i][j] = A[i][j];
err = GpuArray_broadcast(&Adev, ROOT_RANK, comm);
ck_assert_int_eq(err, GA_NO_ERROR);
GpuArray_sync(&Adev);
err = MPI_Bcast(EXP, ROWS * COLS, MPI_INT, ROOT_RANK, MPI_COMM_WORLD);
ck_assert_msg(err == MPI_SUCCESS, "openmpi error: cannot produced expected");
err = GpuArray_read(RES, outsize, &Adev);
ck_assert_int_eq(err, GA_NO_ERROR);
COUNT_ERRORS(RES, EXP, ROWS, COLS, res);
ck_assert_msg(res == 0, "GpuArray_broadcast produced errors in %d places",
res);
DESTROY_ARRAYS();
}
END_TEST
/**
* \note Untested for `not proper element count` , `not agreeing typecode`, `not
* aligned`.
*/
START_TEST(test_GpuArray_all_gather) {
int res;
// In order for C contiguous arrays to be combined/split successfully they
// should
// split along the smallest axis (the one with the bigger stride).
INIT_ARRAYS(ROWS / comm_ndev, COLS, ROWS, COLS);
err = GpuArray_all_gather(&Adev, &RESdev, comm);
ck_assert_int_eq(err, GA_NO_ERROR);
GpuArray_sync(&RESdev);
GpuArray_sync(&Adev);
err = MPI_Allgather(A, ROWS * COLS / comm_ndev, MPI_INT, EXP,
ROWS * COLS / comm_ndev, MPI_INT, MPI_COMM_WORLD);
ck_assert_msg(err == MPI_SUCCESS, "openmpi error: cannot produced expected");
err = GpuArray_read(RES, outsize, &RESdev);
ck_assert_int_eq(err, GA_NO_ERROR);
COUNT_ERRORS(RES, EXP, ROWS, COLS, res);
ck_assert_msg(res == 0, "GpuArray_all_gather produced errors in %d places",
res);
DESTROY_ARRAYS();
}
END_TEST
Suite* get_suite(void) {
Suite* s = suite_create("collectives");
TCase* tc = tcase_create("API");
tcase_add_checked_fixture(tc, setup_comm, teardown_comm);
tcase_add_test(tc, test_GpuArray_reduce);
tcase_add_test(tc, test_GpuArray_all_reduce);
tcase_add_test(tc, test_GpuArray_reduce_scatter);
tcase_add_test(tc, test_GpuArray_broadcast);
tcase_add_test(tc, test_GpuArray_all_gather);
suite_add_tcase(s, tc);
return s;
}
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