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Subject: [MTT users] Is the stock MPI that comes with OSX leopard broken with xgrid?
From: John Fink (john.fink_at_[hidden])
Date: 2008-12-17 08:35:00


Hello OpenMPI folks,

I've got a large pool of Macs running Leopard that are all on an xgrid.
However, I can't seem to use the mpirun that comes with Leopard with the
xgrid. I've got my grid and password environment variables set up okay on
my controller, all the xgrid command line commands work (displaying grid
IDs, things like that) but mpirun only wants to run things on the local
host.

I'm extremely new to OpenMPI and only slightly less new to Macs so there's
probably something very obvious that I'm missing, but I'm trying what's
detailed on this page:
http://www.macresearch.org/runing_mpi_job_through_xgrid (the /bin/hostname
example). Here's my output:

as-0003-l:~ locadmin$ mpirun -n 8 /bin/hostname
as-0003-l.lib.mcmaster.ca
as-0003-l.lib.mcmaster.ca
as-0003-l.lib.mcmaster.ca
as-0003-l.lib.mcmaster.ca
as-0003-l.lib.mcmaster.ca
as-0003-l.lib.mcmaster.ca
as-0003-l.lib.mcmaster.ca
as-0003-l.lib.mcmaster.ca

Issuing the same command with -nolocal yields the following:

as-0003-l:~ locadmin$ mpirun --nolocal -n 8 /bin/hostname
--------------------------------------------------------------------------
There are no available nodes allocated to this job. This could be because
no nodes were found or all the available nodes were already used.

Note that since the -nolocal option was given no processes can be
launched on the local node.
--------------------------------------------------------------------------
[as-0003-l.lib.mcmaster.ca:82776] [0,0,0] ORTE_ERROR_LOG: Temporarily out of
resource in file
/SourceCache/openmpi/openmpi-5/openmpi/orte/mca/rmaps/base/rmaps_base_support_fns.c
at line 168
[as-0003-l.lib.mcmaster.ca:82776] [0,0,0] ORTE_ERROR_LOG: Temporarily out of
resource in file
/SourceCache/openmpi/openmpi-5/openmpi/orte/mca/rmaps/round_robin/rmaps_rr.c
at line 402
[as-0003-l.lib.mcmaster.ca:82776] [0,0,0] ORTE_ERROR_LOG: Temporarily out of
resource in file
/SourceCache/openmpi/openmpi-5/openmpi/orte/mca/rmaps/base/rmaps_base_map_job.c
at line 210
[as-0003-l.lib.mcmaster.ca:82776] [0,0,0] ORTE_ERROR_LOG: Temporarily out of
resource in file
/SourceCache/openmpi/openmpi-5/openmpi/orte/mca/rmgr/urm/rmgr_urm.c at line
372
[as-0003-l.lib.mcmaster.ca:82776] mpirun: spawn failed with errno=-3

Thanks very much for any help you can provide!

jf

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