mpi/tests: new testcase for function starpu_mpi_cache_set()

mpi/tests/Makefile.am

@@ -96,6 +96,7 @@ starpu_mpi_TESTS =				\
 	block_interface				\
 	block_interface_pinned			\
 	cache					\
+	cache_disable				\
 	callback				\
 	matrix					\
 	matrix2					\
@@ -137,6 +138,7 @@ noinst_PROGRAMS =				\
 	block_interface				\
 	block_interface_pinned			\
 	cache					\
+	cache_disable				\
 	callback				\
 	matrix					\
 	matrix2					\
@@ -196,6 +198,8 @@ block_interface_pinned_LDADD =			\
 	../src/libstarpumpi-@STARPU_EFFECTIVE_VERSION@.la
 cache_LDADD =					\
 	../src/libstarpumpi-@STARPU_EFFECTIVE_VERSION@.la
+cache_disable_LDADD =					\
+	../src/libstarpumpi-@STARPU_EFFECTIVE_VERSION@.la
 callback_LDADD =				\
 	../src/libstarpumpi-@STARPU_EFFECTIVE_VERSION@.la
 matrix_LDADD =					\

mpi/tests/cache_disable.c

@@ -0,0 +1,93 @@
+/* StarPU --- Runtime system for heterogeneous multicore architectures.
+ *
+ * Copyright (C) 2015  Centre National de la Recherche Scientifique
+ *
+ * StarPU is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * StarPU is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * See the GNU Lesser General Public License in COPYING.LGPL for more details.
+ */
+
+#include <starpu_mpi.h>
+#include <math.h>
+#include "helper.h"
+#include <starpu_mpi_cache.h>
+
+void func_cpu(STARPU_ATTRIBUTE_UNUSED void *descr[], STARPU_ATTRIBUTE_UNUSED void *_args)
+{
+}
+
+struct starpu_codelet mycodelet_r =
+{
+	.cpu_funcs = {func_cpu},
+	.nbuffers = 1,
+	.modes = {STARPU_R}
+};
+
+int main(int argc, char **argv)
+{
+	int rank, n;
+	int ret;
+	unsigned val;
+	starpu_data_handle_t data;
+	void *ptr;
+
+	ret = starpu_init(NULL);
+	STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
+	ret = starpu_mpi_init(&argc, &argv, 1);
+	STARPU_CHECK_RETURN_VALUE(ret, "starpu_mpi_init");
+	MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+
+	if (starpu_mpi_cache_is_enabled() == 0) goto skip;
+
+	if (rank == 0)
+		starpu_variable_data_register(&data, STARPU_MAIN_RAM, (uintptr_t)&val, sizeof(unsigned));
+	else
+		starpu_variable_data_register(&data, -1, (uintptr_t)NULL, sizeof(unsigned));
+	starpu_mpi_data_register(data, 42, 0);
+	FPRINTF_MPI(stderr, "Registering data %p with tag %d and node %d\n", data, 42, 0);
+
+	ret = starpu_mpi_task_insert(MPI_COMM_WORLD, &mycodelet_r, STARPU_R, data, STARPU_EXECUTE_ON_NODE, 1, 0);
+	STARPU_CHECK_RETURN_VALUE(ret, "starpu_mpi_task_insert");
+
+	ptr = _starpu_mpi_cache_received_data_get(data, 0);
+	if (rank == 1)
+	{
+	     STARPU_ASSERT_MSG(ptr != NULL, "Data should be in cache\n");
+	}
+
+	// We clean the cache
+	starpu_mpi_cache_set(0);
+
+	// We check the data is no longer in the cache
+	ptr = _starpu_mpi_cache_received_data_get(data, 0);
+	if (rank == 1)
+	{
+	     STARPU_ASSERT_MSG(ptr == NULL, "Data should NOT be in cache\n");
+	}
+
+	ret = starpu_mpi_task_insert(MPI_COMM_WORLD, &mycodelet_r, STARPU_R, data, STARPU_EXECUTE_ON_NODE, 1, 0);
+	STARPU_CHECK_RETURN_VALUE(ret, "starpu_mpi_task_insert");
+	ptr = _starpu_mpi_cache_received_data_get(data, 0);
+	if (rank == 1)
+	{
+	     STARPU_ASSERT_MSG(ptr == NULL, "Data should NOT be in cache\n");
+	}
+
+	FPRINTF(stderr, "Waiting ...\n");
+	starpu_task_wait_for_all();
+
+	starpu_data_unregister(data);
+
+skip:
+	starpu_mpi_shutdown();
+	starpu_shutdown();
+
+	return starpu_mpi_cache_is_enabled() == 0 ? STARPU_TEST_SKIPPED : 0;
+}