[openib-general] openMPI for 2.6.17.10 kernel

[Jeff Squyres]

None yet.  I took it as an action item from the SC/OFA meeting to add  
the support.


On Nov 30, 2006, at 11:43 AM, Tom Tucker wrote:

> Jeff:
>
> Which version of OpenMPI uses the RDMA CMA?
>
> Tom
>
> 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
>> question.
>>
>> 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:
>>>>
>>>> Hi,
>>>>
>>>> I am running a 2.6.17.10 kernel with Tom Tucker's rnfs patch and
>>>> would
>>>> like to build Open MPI that uses either IB or iWARP RDMA through  
>>>> this
>>>> kernel. Can I achieve this by getting the latest stable git and
>>>> compile just the userspace software? If so, how do I go about  
>>>> getting
>>>> the latest stable git, and how to compile just the userspace
>>>> stuff?  I
>>>> am new at this and would really appreciate your help.
>>>>
>>>> Thanks,
>>>> Helen
>>>>
>>>
>>> OFED 1.1 contains OpenMPI for IB.
>>> However best if Jeff from OpenMPI will answer it
>>>
>>> Tziporet
>>>
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>>


-- 
Jeff Squyres
Server Virtualization Business Unit
Cisco Systems