https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102320
Bug ID: 102320
Summary: Set cpu affinity error
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: zhuguanghong at uniontech dot com
CC: jakub at gcc dot gnu.org
Target Milestone: ---
libgomp/config/linux/affinity.c
this is error ?
.......
void
gomp_init_affinity (void)
{
if (gomp_places_list == NULL)
{
if (!gomp_affinity_init_level (1, ULONG_MAX, true))
return;
}
struct gomp_thread *thr = gomp_thread ();
pthread_setaffinity_np (pthread_self (), gomp_cpuset_size,
(cpu_set_t *) gomp_places_list[0]); // this set one
cpu ？because parse_affinity
thr->place = 1;
thr->ts.place_partition_off = 0;
thr->ts.place_partition_len = gomp_places_list_len;
}
.......
parse_affinity
......
while (needed--)
11 {
10 void *p = gomp_places_list[gomp_places_list_len];
9 gomp_affinity_init_place (p);
8 if (gomp_affinity_add_cpus (p, cpu_beg, 1, 0,
true))//different cpuset ,GOMP_CPU_AFFINITY=0-x ,gomp_places_list[0] is ?
7 ++gomp_places_list_len;
6 cpu_beg += cpu_stride;
5 }
......
//error
GOMP_CPU_AFFINITY=0-x
