[mvapich-discuss] How do you select a specific InfiniBand SL to be used by MVAPICH2?

[Eitan Zahavi]

Thanks a lot.

Eitan Zahavi
Senior Principal Engineer
Mellanox Technologies LTD
Mellanox Bldg.
Yokneam, Israel 20692
Office line: +972-4-9097208
Cell line: +972-544-478803
Fax line: +972-4-9593245

From: hari.subramoni at gmail.com [mailto:hari.subramoni at gmail.com] On Behalf Of Hari Subramoni
Sent: Tuesday, January 28, 2014 7:38 PM
To: Eitan Zahavi
Cc: mvapich-discuss at cse.ohio-state.edu
Subject: Re: [mvapich-discuss] How do you select a specific InfiniBand SL to be used by MVAPICH2?

Hello Eitan,

You can use the "MV2_DEFAULT_SERVICE_LEVEL" environment variable to select the SL to be used by MPI traffic. There is no need for any additional config flags, the default build will have this enabled.

Please note that this will be a job wide setting, i.e, all processes belonging to that job will use the particular SL (I think this is what you want as well).

Regards,
Hari.

On Tue, Jan 28, 2014 at 10:32 AM, Eitan Zahavi <eitan at mellanox.com<mailto:eitan at mellanox.com>> wrote:
Dear MVAPICH users and support team,

I want to run MVAPICH2 and select specific SL for the MPI traffic.
Although the release notes say it is supported, I could not find exactly how to configure it.

Please advise

Thanks
Eitan

Eitan Zahavi
Senior Principal Engineer
Mellanox Technologies LTD
Mellanox Bldg.
Yokneam, Israel 20692
Office line: +972-4-9097208<tel:%2B972-4-9097208>
Cell line: +972-544-478803<tel:%2B972-544-478803>
Fax line: +972-4-9593245<tel:%2B972-4-9593245>


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