Each inversion group is three SCHED_FIFO threads, so the chances of more groups
than online cores actually getting to run is very slim. Limit the number of
groups requested to be <= the number of online cpus.
Signed-off-by: Clark Williams <williams@xxxxxxxxxx>
---
src/pi_tests/pi_stress.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/pi_tests/pi_stress.c b/src/pi_tests/pi_stress.c
index 0ed844c636cd..ce446d4ea037 100644
--- a/src/pi_tests/pi_stress.c
+++ b/src/pi_tests/pi_stress.c
@@ -1327,6 +1327,12 @@ void process_command_line(int argc, char **argv)
break;
case 'g':
ngroups = strtol(optarg, NULL, 10);
+ if (ngroups > num_processors) {
+ pi_error("the number of groups cannot exceed "
+ "the number of online processors (%d)\n",
+ num_processors);
+ exit(-1);
+ }
pi_info("number of groups set to %d\n", ngroups);
break;
case 'r':
--
2.26.2
