*/
XBT_INLINE void SIMIX_context_set_nthreads(int nb_threads) {
- xbt_assert(nb_threads > 0, "Invalid number of parallel threads: %d", nb_threads);
-
+ if (nb_threads<=0) {
+ nb_threads = xbt_os_get_numcores();
+ XBT_INFO("Auto-setting contexts/nthreads to %d",nb_threads);
+ }
+
if (nb_threads > 1) {
#ifndef CONTEXT_THREADS
THROWF(arg_error, 0, "The thread factory cannot be run in parallel");
#endif
}
-
+
smx_parallel_contexts = nb_threads;
}
#include "xbt/module.h"
#include "mc/mc.h"
#include "surf/surf_resource.h"
+#include "xbt/xbt_os_thread.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
"Logging specific to SURF (kernel)");
*/
void surf_set_nthreads(int nthreads) {
- xbt_assert(nthreads > 0, "Invalid number of parallel threads: %d", nthreads);
+ if (nthreads<=0) {
+ nthreads = xbt_os_get_numcores();
+ XBT_INFO("Auto-setting surf/nthreads to %d",nthreads);
+ }
#ifdef CONTEXT_THREADS
xbt_parmap_destroy(surf_parmap);
static void _surf_cfg_cb_contexts_nthreads(const char *name, int pos)
{
- unsigned int nthreads;
- const char* value = xbt_cfg_get_string(_surf_cfg_set, name);
- if (!strcmp(value, "auto")) {
- XBT_DEBUG("Auto setting contexts/nthreads to %d", PROCESSOR_COUNT);
- nthreads = PROCESSOR_COUNT;
- }
- else {
- nthreads = atoi(value);
- xbt_assert(nthreads > 0, "context/threads should be a positive number or 'auto'");
- }
- SIMIX_context_set_nthreads(nthreads);
+ SIMIX_context_set_nthreads(xbt_cfg_get_int(_surf_cfg_set, name));
}
static void _surf_cfg_cb_contexts_parallel_threshold(const char *name, int pos)
_surf_cfg_cb_context_stack_size, NULL);
/* number of parallel threads for user processes */
- default_value = xbt_strdup("1");
+ default_value_int = 1;
xbt_cfg_register(&_surf_cfg_set, "contexts/nthreads",
"Number of parallel threads used to execute user contexts",
- xbt_cfgelm_string, &default_value, 1, 1,
+ xbt_cfgelm_int, &default_value, 1, 1,
_surf_cfg_cb_contexts_nthreads, NULL);
/* minimal number of user contexts to be run in parallel */