[openib-general] openMPI for 184.108.40.206 kernel
jsquyres at cisco.com
Thu Nov 30 08:53:49 PST 2006
None yet. I took it as an action item from the SC/OFA meeting to add
On Nov 30, 2006, at 11:43 AM, Tom Tucker wrote:
> Which version of OpenMPI uses the RDMA CMA?
> On Thu, 2006-11-30 at 06:49 -0500, Jeff Squyres wrote:
>> I think that this is mainly an OFA question, not so much an Open MPI
>> Provided you can get a coherent OFA stack (which others will have to
>> describe how to do), Open MPI should build against it with no
>> problem. Be sure to use the --with-openib=<path to your OFA
>> installation> option to configure to enable OFA support.
>> Note that when using iWARP hardware, you will need to disable small
>> message RDMA at run-time by setting the MCA parameter
>> "btl_openib_use_eager_rdma" to 0. There are a variety of ways to set
>> MCA parameters at run time; see http://www.open-mpi.org/faq/?
>> category=tuning#setting-mca-params for the details.
>> Future releases of Open MPI should do this automatically, but the
>> current stable series does not (more specifically: we're just getting
>> the iWARP vendors involved in Open MPI, so they're just becoming part
>> of the process, etc.).
>> On Nov 30, 2006, at 3:41 AM, Tziporet Koren wrote:
>>> Chen, Helen Y wrote:
>>>> I am running a 220.127.116.11 kernel with Tom Tucker's rnfs patch and
>>>> like to build Open MPI that uses either IB or iWARP RDMA through
>>>> kernel. Can I achieve this by getting the latest stable git and
>>>> compile just the userspace software? If so, how do I go about
>>>> the latest stable git, and how to compile just the userspace
>>>> stuff? I
>>>> am new at this and would really appreciate your help.
>>> OFED 1.1 contains OpenMPI for IB.
>>> However best if Jeff from OpenMPI will answer it
>>> openib-general mailing list
>>> openib-general at openib.org
>>> To unsubscribe, please visit http://openib.org/mailman/listinfo/
Server Virtualization Business Unit
More information about the general