[mpich-discuss] How to use myrinet in mpich2?

[Scott Atchley]

Luís,

Make sure you get MPICH2 1.1 for much improved Nemesis/MX support.

You may also want to try MPICH2-MX 1.0.8p1..3:

http://www.myri.com/scs/download-mpichmx.html

It is based on MPICH2 1.0.8p1.

You may want to compare the two. In my testing, MPICH2-MX has much  
better shared-memory performance, especially on machine with a lot of  
cores, and slightly lower latency (~200-300 ns). In MPICH2 1.1, they  
have support for knem on Intel Core2 and later processors which will  
give much better shared memory support.

If you need dynamic process management, thread multiple support, and/ 
or one-sided support, you must use Nemesis/MX.

Scott

On Jun 24, 2009, at 1:33 PM, Darius Buntinas wrote:

> MPICH2 supports myrinet using either TCP or MX.  Using MX will give  
> you
> the best performance.  The README file describes the additional
> configure arguments you'll need to configure with MX.
>
> -d
>
> On 06/24/2009 11:26 AM, Luís Miranda wrote:
>> How to use myrinet in mpich2? Do i have to compile specifically to  
>> use
>> myrinet?
>>
>> Thanks