[mvapich-discuss] Enjoying the CMA-aware mvapich2 :)

[Mehmet Belgin]

Hi Everyone,

I stumbled upon a poster (by Jerome Vienne) during the XSEDE14 
conference, which explained CMA-related improvements with the latest 
version of MVAPICH2 . It looked too good to be true, so I gave it a shot 
myself on our 64core Interlagos nodes. The latency and bandwidth 
improvements I observed also confirm the significant improvements over 
rc1 (my findings are attached, sorry for the ugly format). The results 
are mind blowing, especially given that they are available to users with 
no extra effort (no special kernel modules, extra runtime parameters, etc).

For once, I wanted to write the list to NOT complain about bugs or 
problems, but rather appreciate the good work the developers are doing. 
I hope this encourages others who still have not given the latest 
version a try to do so :)

Our big applause goes to all the MVAPICH2 developers, and please keep up 
the good work!

  -Mehmet

-- 
=========================================
Mehmet Belgin, Ph.D. (mehmet.belgin at oit.gatech.edu)
Scientific Computing Consultant | OIT - Academic and Research Technologies
Georgia Institute of Technology
258 Fourth Street, Rich Building, Room 326
Atlanta, GA  30332-0700
Office: (404) 385-0665

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