[mvapich-discuss] DDR Infiniband configuration for Mvapich-9.9.9

[Sayantan Sur]

Hi Sergey,

Thanks for trying out MVAPICH-0.9.9. You should just compile 
MVAPICH-0.9.9 using the make.mvapich2.gen2. If the OFED drivers are 
loaded on the machine on which you are compiling, MVAPICH should 
automatically detect all optimal settings.

For which application did you not see any benefit? The OSU bandwidth and 
bi-directional bandwidth tests should always show a difference if you 
upgraded your links from SDR to DDR.

Thanks,
Sayantan.

Shalnov, Sergey wrote:
> Gentlemen,
> I used mvapich-0.9.9 to work with my applications. I have upgraded my
> cluster network from _SDR_ to _DDR_ links and found that mvapich has the
> same performance. I use ofed-1.2-rc2. I built mvapich by
> make.mvapich.gen2 script and did not found any configuration macro to
> point that I have DDR IB. Also, I found that script make.mvapich.vapi
> can be specially configured for DDR IB.
>
> How I should compile mvapich-0.9.9 to achieve maximum performance for
> DDR IB network?
>
> Sergey
>
> PS. I have no vapi library installed on my cluster.
>
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