[Beowulf] IB DDR: mvapich2 vs mvapich performance

Mikhail Kuzminsky kus at free.net
Wed Apr 23 12:30:35 PDT 2008

In message from Greg Lindahl <lindahl at pbm.com> (Wed, 23 Apr 2008 
00:36:44 -0700):
>On Wed, Apr 23, 2008 at 07:04:51AM +0400, Mikhail Kuzminsky wrote:
>> Is this throughput difference the result of MPI-2 vs MPI 
>> implementation or should I beleive that this difference (about 4% 
>> my mvapich vs mvapich2 at SC'07 ) is not significant  - in the sense 
>> that it is simple because of some measurement errors (inaccuracies)? 
>I dunno, does it help your real applications?

Significantly - of course, not :-) 
But our application is really bounded by throughput !

>-- greg

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