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Subject: Re: [OMPI devel] Affect of compression on modex and launch messages
From: Ralph H Castain (rhc_at_[hidden])
Date: 2008-04-07 09:07:38


On 4/7/08 7:04 AM, "Gleb Natapov" <glebn_at_[hidden]> wrote:

> On Fri, Apr 04, 2008 at 10:52:38AM -0600, Ralph H Castain wrote:
>> With compression "on", you will get output telling you the original size of
>> the message and its compressed size so you can see what was done.
>>
> I see this output:
> uncompressed allgather msg orig size 67521 compressed size 4162.
>
> What is "allgather msg"

It is the modex message - it is "shared" across all the procs via an
allgather procedure

>
> --
> Gleb.