Test asynchronous partitioning on a temporary data.

tests/Makefile.am

@@ -254,6 +254,7 @@ myPROGRAMS +=				\
 	datawizard/task_with_multiple_time_the_same_handle	\
 	datawizard/test_arbiter			\
 	datawizard/invalidate_pending_requests	\
+	datawizard/temporary_partition		\
 	disk/disk_copy				\
 	disk/disk_compute			\
 	disk/disk_pack				\

tests/datawizard/temporary_partition.c

@@ -0,0 +1,112 @@
+/* StarPU --- Runtime system for heterogeneous multicore architectures.
+ *
+ * Copyright (C) 2010, 2016  Université de Bordeaux
+ * Copyright (C) 2010, 2011, 2012, 2013  CNRS
+ *
+ * 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.h>
+#include "../helper.h"
+
+#define SIZE (1<<20)
+#define NPARTS 16
+
+/*
+ * Test asynchronous partitioning on a temporary data.
+ */
+
+static void codelet(void *descr[], STARPU_ATTRIBUTE_UNUSED void *_args)
+{
+}
+
+static struct starpu_codelet clrw =
+{
+	.where = STARPU_CPU,
+	.cpu_funcs = {codelet},
+	.nbuffers = 1,
+	.modes = {STARPU_RW}
+};
+
+static struct starpu_codelet clw =
+{
+	.where = STARPU_CPU,
+	.cpu_funcs = {codelet},
+	.nbuffers = 1,
+	.modes = {STARPU_W}
+};
+
+static struct starpu_codelet clr =
+{
+	.where = STARPU_CPU,
+	.cpu_funcs = {codelet},
+	.nbuffers = 1,
+	.modes = {STARPU_R}
+};
+
+int main(int argc, char **argv)
+{
+	int ret;
+	starpu_data_handle_t handle, handles[NPARTS];
+	int i;
+
+	ret = starpu_init(NULL);
+	if (ret == -ENODEV) return STARPU_TEST_SKIPPED;
+	STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
+
+	starpu_vector_data_register(&handle, -1, 0, SIZE, sizeof(char));
+
+	/* Fill temporary */
+	starpu_task_insert(&clw, STARPU_W, handle, 0);
+
+	/* Fork */
+	struct starpu_data_filter f =
+	{
+		.filter_func = starpu_vector_filter_block,
+		.nchildren = NPARTS
+	};
+	starpu_data_partition_plan(handle, &f, handles);
+	starpu_data_partition_submit(handle, NPARTS, handles);
+
+	/* Process in parallel */
+	for (i = 0; i < NPARTS; i++)
+	{
+		ret = starpu_task_insert(&clrw,
+					 STARPU_RW, handles[i],
+					 0);
+		if (ret == -ENODEV) goto enodev;
+		STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_insert");
+	}
+
+	/* Join */
+	starpu_data_unpartition_submit(handle, NPARTS, handles, -1);
+	starpu_data_partition_clean(handle, NPARTS, handles);
+
+	/* Read result */
+	starpu_task_insert(&clr, STARPU_R, handle, 0);
+
+	starpu_data_unregister(handle);
+
+	starpu_shutdown();
+
+	return 0;
+
+enodev:
+	starpu_data_unpartition_submit(handle, NPARTS, handles, -1);
+	starpu_data_partition_clean(handle, NPARTS, handles);
+	starpu_data_unregister(handle);
+	starpu_shutdown();
+	/* yes, we do not perform the computation but we did detect that no one
+	 * could perform the kernel, so this is not an error from StarPU */
+	fprintf(stderr, "WARNING: No one can execute this task\n");
+	return STARPU_TEST_SKIPPED;
+}