[mvapich-discuss] Homogeneity

[Jonathan Perkins]

Hello Julius.

To answer your question, I believe you should just set MV2_SHOW_ENV_INFO to
1.

There will be a line indicating whether a homogeneous set of machines have
been detected.  This is true when the cpu architecture as well as the
Infiniband HCAs installed on each system is the same.

On Mon, May 9, 2016 at 9:32 AM Julius Kolbe <kolbe at sra.uni-hannover.de>
wrote:

> Hi everyone,
>
> I am working on my master thesis using MVAPICH2.
> One part of my work is to find out if and to what degree the cluster is
> homogeneous.
> During my research I found this:
>
> http://mvapich.cse.ohio-state.edu/static/media/mvapich/mvapich2-2.1-userguide.html#x1-960008.1
> which sounds like the MVAPICH2 already does what I want to achieve.
> But I need to have further information about how MVAPICH2 does this
> detection. I searched through the codebase but couldn't find the place
> where this is done. Or at least couldn't recognize it when I saw it.
>
> Can someone please point me to the right point and perhaps even give me
> a quick summary on what is done there?
> Also I'd like to get the result of this detection. I found some printing
> methods where this was part, but I don't know how to get this
> information. Is there a specific verbosity or environment variable I
> need to set?
>
> Thanks a lot for your help.
>
> Julius Kolbe
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