[mvapich-discuss] How to use MVAPICH with different Service Level in Infiniband Virtual Lane?

[Subramoni, Hari]

Hi, Kihang.

Yes, that environment variable can change the default service level being used by MVAPICH2 for InfiniBand and RoCe.

Best,
Hari.

From: mvapich-discuss-bounces at cse.ohio-state.edu <mvapich-discuss-bounces at mailman.cse.ohio-state.edu> On Behalf Of Kihang Youn
Sent: Tuesday, February 25, 2020 12:34 AM
To: mvapich-discuss at cse.ohio-state.edu <mvapich-discuss at mailman.cse.ohio-state.edu>
Subject: [mvapich-discuss] How to use MVAPICH with different Service Level in Infiniband Virtual Lane?


Hello,

I am searching the option to apply different service level(SL) in Infiniband communication.
For example, In Intel MPI, the environmental variable named  "DAPL_IB_SERVICE_LEVEL" can change the SL.
I found an evironment variable "MV2_DEFAULT_SERVICE_LEVEL" in user guide.
But, In the manual, "MV2_DEFAULT_SERVICE_LEVEL" is related RoCE priority service level.
I am not sure that the option can change "Infiniband Service Level".
Please let me know the option is that I look for.

Thank you,
Kihang



Kihang Youn(윤기항) - Application Analyst | Lenovo DCG Professional Services
Mobile: +82-10-9374-9396
E-mail: kyoun at lenovo.com<mailto:kyoun at lenovo.com>
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