Hi Brice,
On 13-08-14 10:46, Brice Goglin wrote:
Hello,
Can you elaborate how you would use this?
The intend of the current behavior is:
1) if the target task already runs, use "hwloc-bind --pid <pid> --get"
without any command since you have pid already
this behaviour stays the same with the patch.
2) you just want to check whether the upcoming binding works, so you
just do something like "mpirun .... hwloc-bind --get" or "srun ...
hwloc-bind --get"
Do you want a mode that creates a new task and displays it binding?
indeed.
Looks similar to passing "hwloc-bind --get ; newtask" to srun or mpirun ?
the syntax would then be something like:
mpirun -n 2 bash -c "hwloc-bind --get ; newtask"
it's possible, but quite ugly.
With regards,
John
Brice
Le 13/08/2014 10:38, John Donners a écrit :
Hi,
I was somewhat surprised to notice that hwloc-bind doesn't
execute the command if the --get option is used. This could
come in handy to check the binding set by other programs,
e.g. SLURM, mpirun or taskset. The following patch would
change this.
--- hwloc-1.9/utils/hwloc-bind.c 2014-03-17 16:42:36.000000000 +0100
+++ hwloc-1.9/utils/hwloc-bind.c.getproc 2014-08-13
10:24:17.832682576 +0200
@@ -301,7 +301,9 @@
else
printf("%s\n", s);
free(s);
- return EXIT_SUCCESS;
+ if (get_last_cpu_location) {
+ return EXIT_SUCCESS;
+ }
}
if (got_membind) {
Please consider this change for the next release of hwloc.
With regards,
John
| John Donners | Senior adviseur | Operations, Support & Development |
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| John Donners | Senior adviseur | Operations, Support & Development | SURFsara
| Science Park 140 | 1098 XG Amsterdam | Nederland |
T (31)6 19039023 | john.donn...@surfsara.nl | www.surfsara.nl |
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