Le 23/03/2016 08:54, Dominikus Heinzeller a écrit :
Hi all,
I am having a problem with spawning a large number of threads on a
node. My server consists of 4 sockets x 12 cores per socket x 2 threads
per
core = 96 procs
[...]
Any help or suggestion what I could do?
It looks like you're using PMI1, there's must be something wrong in PMI
initialization. 96 tasks on one node is not something large, there's not
reason to spend more than 5 seconds on this... You can eventually
profile PMI calls by setting PMI_DEBUG environement variable to 1, to
find out where it takes time.
Eventually, you can set PMI_TIME environement variable as well to a
value <500, and see if there's any difference.
Best,
Rémi
