Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] selectively bind MPI to one HCA out of available ones
From: Lenny Verkhovsky (lenny.verkhovsky_at_[hidden])
Date: 2009-07-15 09:33:33

Make sure you have Open MPI 1.3 series,
I dont think the if_include param is not avaliable in 1.2 series.

max btls controls fragmentation and load balancing over similar BTLS (
example using LMC > 0, or 2 ports connected to 1 network )
you need if_include param

On Wed, Jul 15, 2009 at 4:20 PM, Ralph Castain <rhc_at_[hidden]> wrote:

> Take a look at the output from "ompi_info --params btl openib" and you will
> see the available MCA params to direct the openib subsystem. I believe you
> will find that you can indeed specify the interface.
> On Wed, Jul 15, 2009 at 7:15 AM, <neeraj_at_[hidden]> wrote:
>> Hi all,
>> I have a cluster where both HCA's of blade are active, but
>> connected to different subnet.
>> Is there an option in MPI to select one HCA out of available
>> one's? I know it can be done by making changes in openmpi code, but i need
>> clean interface like option during mpi launch time to select mthca0 or
>> mthca1?
>> Any help is appreciated. Btw i just checked Mvapich and feature is
>> there inside.
>> Regards
>> Neeraj Chourasia (MTS)
>> Computational Research Laboratories Ltd.
>> (A wholly Owned Subsidiary of TATA SONS Ltd)
>> B-101, ICC Trade Towers, Senapati Bapat Road
>> Pune 411016 (Mah) INDIA
>> (O) +91-20-6620 9863 (Fax) +91-20-6620 9862
>> M: +91.9225520634
>> =====-----=====-----===== Notice: The information contained in this e-mail
>> message and/or attachments to it may contain confidential or privileged
>> information. If you are not the intended recipient, any dissemination, use,
>> review, distribution, printing or copying of the information contained in
>> this e-mail message and/or attachments to it are strictly prohibited. If you
>> have received this communication in error, please notify us by reply e-mail
>> or telephone and immediately and permanently delete the message and any
>> attachments. Internet communications cannot be guaranteed to be timely,
>> secure, error or virus-free. The sender does not accept liability for any
>> errors or omissions.Thank you =====-----=====-----=====
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
> _______________________________________________
> users mailing list
> users_at_[hidden]