On Jun 13, 2007, at 9:49 AM, Torsten Hoefler wrote:
Hi Galen,Gleb,
there is also something weird going on if I call the basic alltoall
during the module_init() of a collective module (I need to wire up my
own QPs in my coll component). It takes 7 seconds for 4 nodes and more
than 30 minutes for 120 nodes. It seems to be an OpenIB wireup issue
because if I start with -mca btl tcp,self this goes as fast as
expected
(<2 seconds).
Will this issue be fixed with your patch?
No, this is a separate issue.
Try:
-mca mpi_preconnect_oob 1
then try:
-mca mpi_preconnect_all 1
and let us know what the times are.
thx,
galen
Thanks,
Torsten
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