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From: Galen Shipman (gshipman_at_[hidden])
Date: 2007-06-13 11:58:11


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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