Use what hostname returns - don't worry about IP addresses as we'll discover
them.
On Jul 26, 2010, at 10:45 PM, Philippe wrote:
> Thanks a lot!
>
> now, for the ev "OMPI_MCA_orte_nodes", what do I put exactly? our
> nodes have a short/long name (it's rhel 5.x, so the command hostname
> returns the long name) and at least 2 IP addresses.
>
> p.
>
> On Tue, Jul 27, 2010 at 12:06 AM, Ralph Castain <r...@open-mpi.org> wrote:
>> Okay, fixed in r23499. Thanks again...
>>
>>
>> On Jul 26, 2010, at 9:47 PM, Ralph Castain wrote:
>>
>>> Doh - yes it should! I'll fix it right now.
>>>
>>> Thanks!
>>>
>>> On Jul 26, 2010, at 9:28 PM, Philippe wrote:
>>>
>>>> Ralph,
>>>>
>>>> i was able to test the generic module and it seems to be working.
>>>>
>>>> one question tho, the function orte_ess_generic_component_query in
>>>> "orte/mca/ess/generic/ess_generic_component.c" calls getenv with the
>>>> argument "OMPI_MCA_enc", which seems to cause the module to fail to
>>>> load. shouldnt it be "OMPI_MCA_ess" ?
>>>>
>>>> .....
>>>>
>>>> /* only pick us if directed to do so */
>>>> if (NULL != (pick = getenv("OMPI_MCA_env")) &&
>>>> 0 == strcmp(pick, "generic")) {
>>>> *priority = 1000;
>>>> *module = (mca_base_module_t *)&orte_ess_generic_module;
>>>>
>>>> ...
>>>>
>>>> p.
>>>>
>>>> On Thu, Jul 22, 2010 at 5:53 PM, Ralph Castain <r...@open-mpi.org> wrote:
>>>>> Dev trunk looks okay right now - I think you'll be fine using it. My new
>>>>> component -might- work with 1.5, but probably not with 1.4. I haven't
>>>>> checked either of them.
>>>>>
>>>>> Anything at r23478 or above will have the new module. Let me know how it
>>>>> works for you. I haven't tested it myself, but am pretty sure it should
>>>>> work.
>>>>>
>>>>>
>>>>> On Jul 22, 2010, at 3:22 PM, Philippe wrote:
>>>>>
>>>>>> Ralph,
>>>>>>
>>>>>> Thank you so much!!
>>>>>>
>>>>>> I'll give it a try and let you know.
>>>>>>
>>>>>> I know it's a tough question, but how stable is the dev trunk? Can I
>>>>>> just grab the latest and run, or am I better off taking your changes
>>>>>> and copy them back in a stable release? (if so, which one? 1.4? 1.5?)
>>>>>>
>>>>>> p.
>>>>>>
>>>>>> On Thu, Jul 22, 2010 at 3:50 PM, Ralph Castain <r...@open-mpi.org> wrote:
>>>>>>> It was easier for me to just construct this module than to explain how
>>>>>>> to do so :-)
>>>>>>>
>>>>>>> I will commit it this evening (couple of hours from now) as that is our
>>>>>>> standard practice. You'll need to use the developer's trunk, though, to
>>>>>>> use it.
>>>>>>>
>>>>>>> Here are the envars you'll need to provide:
>>>>>>>
>>>>>>> Each process needs to get the same following values:
>>>>>>>
>>>>>>> * OMPI_MCA_ess=generic
>>>>>>> * OMPI_MCA_orte_num_procs=<number of MPI procs>
>>>>>>> * OMPI_MCA_orte_nodes=<a comma-separated list of nodenames where MPI
>>>>>>> procs reside>
>>>>>>> * OMPI_MCA_orte_ppn=<number of procs/node>
>>>>>>>
>>>>>>> Note that I have assumed this last value is a constant for simplicity.
>>>>>>> If that isn't the case, let me know - you could instead provide it as a
>>>>>>> comma-separated list of values with an entry for each node.
>>>>>>>
>>>>>>> In addition, you need to provide the following value that will be
>>>>>>> unique to each process:
>>>>>>>
>>>>>>> * OMPI_MCA_orte_rank=<MPI rank>
>>>>>>>
>>>>>>> Finally, you have to provide a range of static TCP ports for use by the
>>>>>>> processes. Pick any range that you know will be available across all
>>>>>>> the nodes. You then need to ensure that each process sees the following
>>>>>>> envar:
>>>>>>>
>>>>>>> * OMPI_MCA_oob_tcp_static_ports=6000-6010 <== obviously, replace this
>>>>>>> with your range
>>>>>>>
>>>>>>> You will need a port range that is at least equal to the ppn for the
>>>>>>> job (each proc on a node will take one of the provided ports).
>>>>>>>
>>>>>>> That should do it. I compute everything else I need from those values.
>>>>>>>
>>>>>>> Does that work for you?
>>>>>>> Ralph
>>>>>>>
>>>>>>>
>
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