In Open MPI, we detect when the source and receiver side share the
same architecture. Then, the datatype engine avoids type conversion
(let say XDR, ou htonl) and sends raw binary data on the link. If the
architecture mismatch, the datatype engine is forced to use some
conversion which will
Aurelien:
What is the cause of this performance penalty?
Jody
On Fri, Apr 11, 2008 at 1:44 AM, Aurélien Bouteiller
wrote:
> Open MPI can manage heterogeneous system. Though you prefer to avoid
> this because it has a performance penalty. I suggest you compile on
> the 32bit machine and use t
Thanks for the information. I'll try it out.
>Open MPI can manage heterogeneous system. Though you prefer to avoid
>this because it has a performance penalty. I suggest you compile on
>the 32bit machine and use the same version everywhere.
Aurelien
Le 10 avr. 08 à 18:09, clarkmpi_at_[hidden] a é
Open MPI can manage heterogeneous system. Though you prefer to avoid
this because it has a performance penalty. I suggest you compile on
the 32bit machine and use the same version everywhere.
Aurelien
Le 10 avr. 08 à 18:09, clark...@clarktx.com a écrit :
Thanks to those who answered my post i
Thanks to those who answered my post in the past. I have to admit that you lost
me about half way through the thread.
I was able to get 2 of my systems cranked up and was about to put a third
system online when I remembered it was running x64 version of OS.
Can I just recompile the code on the x
