I very much doubt that either of those mappers has ever been tested against
comm_spawn. Just glancing thru them, I don't see an immediate reason why
loadbalance wouldn't work, but the error indicates that the system wound up
mapping one or more processes to an unknown node.
We are revising the
I'm trying to use MPI_Comm_spawn_multiple and it doesn't seem to always work
like I'd expect.
The simple test code I have starts a couple of master processes and then tries
to spawn a couple of worker threads on each of the nodes running the master
processes.
I was using 1.5.1, but gave 1.5.2r
All of the hosts that will be used in the job must be included in the original
hostfile - even if the hosts won't be used until comm_spawn.
The name in the hostfile must match the name provided in the info object as we
otherwise would have to do DNS resolves to detect the alias, which would have
Hi everyone !
I have to submit you a question,
I write a little code that does and MPI_Comm_spawn_multiple on a specific
set of node.
The node where to run on are specified using the "host" attribute of the
MPI_Info object.
That attribute is filled with the string get from MPI_Get_processor_name.
Oups, sorry !
I followed these steps :
1) Install a debian system (sarge 3.1r2).
2) Use a 2.6.9 kernel patched with bproc 4.0.0pre8
(http://bproc.sourceforge.net)
the options CONFIG_BPROC, CONFIG_ROMFS_FS, CONFIG_BLK_DEV_RAM,
CONFIG_BLK_DEV_INITRD, CONFIG_TMPFS where activated via the 'make me
Could you please clarify - what "Bproc kernel patch" are you referring to?
Thanks
Ralph
On 9/27/06 2:37 AM, "laurent.po...@fr.thalesgroup.com"
wrote:
> Hi,
>
> I'm using MPI_Comm_spawn_multiple with Open MPI 1.1.1.
> It used to work well, until I used the Bproc kernel patch.
>
> When I use
Hi,
I'm using MPI_Comm_spawn_multiple with Open MPI 1.1.1.
It used to work well, until I used the Bproc kernel patch.
When I use the Bproc patch, my program freezes when calling
MPI_Comm_spawn_multiple.
Does MPI_Comm_spawn_multiple and BProc can work together ?
Thanks,
Laurent Porez
> Hi,
>
> I saw with great pleasure that in the last version of open mpi (1.1.1b4), the
> 'host' MPI_Info key was available for the mpi_comm_spawn_multiple function.
>
> I tested it and I could spawn my processes on the wanted hosts.
> Now, the question is : How can I tell mpi_comm_spawn_multi
