[mpich-discuss] environment settings to select the preferred TCP netmask

Junchao Zhang jczhang at mcs.anl.gov
Fri Nov 7 16:28:54 CST 2014


On Fri, Nov 7, 2014 at 4:07 PM, Ebalunode, Jerry O <jebaluno at central.uh.edu>
wrote:

> Hello all:
> I am currently using mpich3.1.3. I need help in tuning the environment
> settings to select the prefferred TCP netmask  or network. The variables
>
> MPICH_TCP_NETMASK
> MPICH_NETMASK
> MPIR_CVAR_NEMESIS_TCP_NETMASK
>
> don’t seem to the working
>

MPICHers, do we have variables for this purpose?  "mpivars | grep MASK"
finds none.


>
> Also, how can I tune the eager threshhold. Intel MPI uses I_MPI_THRESHOLD
> for doing this. Thanks for all the help advance.
>

 mpivars | grep EAGER


>
> -Jerry
>
> University of Houston
>
>
>
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