[mvapich-discuss] Specify hca device per node in a given run

[LEI CHAI]

Hi Jim,

To use different dapl providers on different nodes for mvapich2, we have a solution posted earlier, please take a look:

http://mail.cse.ohio-state.edu/pipermail/mvapich-discuss/2007-July/000981.html

Currently you cannot specify different device names (VIADEV_DEVICE) for mvapich though. It will automatically detect the first working device to use.

Lei


----- Original Message -----
From: Jim Stoffel <stoffel at sgi.com>
Date: Wednesday, December 12, 2007 10:45 am
Subject: [mvapich-discuss] Specify hca device per node in a given run

> Is there a way to specify the HCA device on a per node
> basis for a single instance of a MPI application execution?   
> DAPL_PROVIDER (mvapich2) or VIADEV_DEVICE(mvapich)
> can be used to specify the device which applies to all nodes in the
> run.    Can the device be set for each individual node in a paramfile
> or a hostlist file?
> 
> I would somehow like to have data transfer  through  hca0 of node0
> and  hca1 of node1.
> 
> node0 DAPL_PROVIDER OpenIB-cma
> node1 DAPL_PROVIDER OpenIB-cma-1
> 
> Please advise.
> Thanks,
> Jim
> 
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