[mvapich-discuss] [mpich-discuss] mvapich and infiniband with LMC. How to set mpi rank - specific lid?

[Hari Subramoni]

Hi,

You are using a very old version of MVAPICH. We strongly recommend that
you upgrade to the latest version which gives you the best performance and
more features. You can download the latest release from the following
website

http://mvapich.cse.ohio-state.edu/download/mvapich/

MVAPICH-1.1 allows you to choose multiple paths between end nodes by the
use of the environment variable "VIADEV_USE_LMC". Please set this to '1' to
enable this feature.

Please refer to MVAPICH user guide available at the following link for more information.

http://mvapich.cse.ohio-state.edu/support/mvapich_user_guide-1.1.html#x1-790009.2.6

Thx,
Hari.

On Tue, 17 Feb 2009, wind wind wrote:

>   Hi
>   How to set rank to specific lid ?
>   I use MVAPICH 0.9.9
>
>   For example I have
>      host0 ib0   base lid 10, multi lid 11 multi lid 12 ...
>      host1 ib0   base lid 15, multi lid 16 multi lid 17 ...
>      host2 ib0   base lid 20, multi lid 21 multi lid 22 ...
>      LMC = 2
>
>   Topology:
>              switch0
>            /          \
>      switch1 -------  switch2
>       /                 \    \
>   host0                 host1 host2
>
>   I can to set this routs with using LMC
>       host1 -> switch2 -> switch1 -> host0
>       host2 -> switch2 -> switch0 -> switch1 -> host0
>
>  How i can set this ratio:
>       mpi proc 0 rank 0 lid 10
>       mpi proc 1 rank 1 lid 16
>       mpi proc 2 rank 2 lid 22
>
>  Do anyone know anything about this ?
>  Thanks in advance.
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