[openib-general] mvapich-gen2 IA64 compile problem

[John Partridge]

Roland Dreier wrote:
>     Peter> If that is the purpose it fails badly since I have both
>     Peter> EM64T machines with PCI-X and AMD64 machines with
>     Peter> PCI-express. Or am I missing something here?
> 
> Nope, the fact that it's messed up is what I was trying to point out.
>>From a quick look at the code, it looks like you should set the
> environment variable VIADEV_DEFAULT_MTU to "MTU1024" on PCI-X systems
> and "MTU2048" on PCI Express systems.
> 
> In general, one wants to use the largest possible MTU to get maximum
> performance.  

Yes, I was not sure if IA64 should be 2048 or 1024 when I proposed the patch.

If I get time I will try and test our which is best fo IA64.

John


-- 
John Partridge

Silicon Graphics Inc
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