On Jan 22, 2007, at 10:39 AM, Greg Watson wrote:
On Jan 22, 2007, at 9:48 AM, Ralph H Castain wrote:
On 1/22/07 9:39 AM, "Greg Watson" <gwat...@lanl.gov> wrote:
I tried adding '-mca btl ^sm -mca mpi_preconnect_all 1' to the
mpirun
command line but it still fails with identical error messages.
I don't understand the issue with allocating nodes under bproc.
Older
versions of OMPI have always just queried bproc for the nodes that
have permissions set so I can execute on them. I've never had to
allocate any nodes using a hostfile or any other mechanism. Are you
saying that this no longer works?
Turned out that mode of operation was a "bug" that caused all
kinds of
problems in production environments - that's been fixed for quite
some time.
So, yes - you do have to get an official "allocation" of some kind.
Even the
changes I mentioned wouldn't remove that requirement in the way you
describe.
BTW, there's no requirement for a bproc system to employ a job
scheduler. So in my view OMPI is "broken" for bproc systems if it
imposes such a requirement.
I agree that the present assumption that BProc requires LSF be in use
is broken and we have a fix for that shortly. However, we still will
require a resource allocator of some sort (even a hostfile should
work) to tell us which nodes to run on. It should be possible to
write a resource allocator that just grabs nodes out of the available
pool returned by the bproc status functions should be possible, but I
don't believe that's on the to-do list in the near future...
Brian
--
Brian Barrett
Open MPI Team, CCS-1
Los Alamos National Laboratory
