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Subject: Re: [OMPI users] anybody tried OMPI with gpudirect?
From: Rolf vandeVaart (rvandevaart_at_[hidden])
Date: 2011-02-28 14:22:50


-----Original Message-----
From: users-bounces_at_[hidden] [mailto:users-bounces_at_[hidden]] On Behalf Of Brice Goglin
Sent: Monday, February 28, 2011 2:14 PM
To: Open MPI Users
Subject: Re: [OMPI users] anybody tried OMPI with gpudirect?

Le 28/02/2011 19:49, Rolf vandeVaart a écrit :
> For the GPU Direct to work with Infiniband, you need to get some updated OFED bits from your Infiniband vendor.
>
> In terms of checking the driver updates, you can do a grep on the string get_driver_pages in the file/proc/kallsyms. If it is there, then the Linux kernel is updated correctly.
>

The kernel looks ok then. But I couldn't find any kernel modules (tried nvidia.ko and all ib modules) which references this symbol. So I guess my OFED kernel modules aren't ok. I'll check on Mellanox website (we have some very recent Mellanox ConnectX QDR boards).

thanks
Brice

------------------------------
I have since learned that you can check /sys/module/ib_core/parameters/* which will list a couple of GPU direct files if the driver is installed correctly and loaded.

Rolf

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