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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2006-10-23 15:37:56

On Oct 23, 2006, at 11:23 AM, Lisandro Dalcin wrote:

>> {{{
>> rc = MCA_PML_CALL(start(....));
>> }}}
>> where XXX is some relevant communicator:
>> * MPI_START: the communicator of the single request -- easy enough
>> * MPI_STARTALL: MPI-1:3.9 says that STARTALL is exactly
>> equivalent to
>> calling START n times, so I guess we use the communicator from
>> the request
>> that caused the error. pml_base_module_start_t() doesn't return
>> ''which''
>> request caused the error, so I'm guessing that if (OMPI_SUCCESS !
>> = rc),
>> we'll have to scan through the list of requests to find the first
>> one with
>> an error and use the communicator from that one. Right?
> Yes, but... Which error handler will be called?? The one associated to
> the communicator involved in the request, or MPI_COMM_WORLD? I do not
> remember right now if the standar says anything about this. If not, it
> should call the error handler of WORLD communicator. Am I right?

This is exactly what I was referring to in the last parts of the
message (see above).

Jeff Squyres
Server Virtualization Business Unit
Cisco Systems