crud - sorry about that! old man can't even remember his own param name....sigh

Thanks for checking it
Ralph

On Feb 6, 2014, at 9:47 AM, Paul Hargrove <phhargrove@lbl.gov> wrote:

Ralph,

It worked on my second try, when I spelled it "ras_tm_smp" :-)

Thanks,
-Paul



On Wed, Feb 5, 2014 at 11:59 AM, Paul Hargrove <phhargrove@lbl.gov> wrote:
Ralph,

I will try to build tonight's trunk tarball and then test a run tomorrow.
Please ping me if I don't post my results by Thu evening (PST).

-Paul


On Wed, Feb 5, 2014 at 7:52 AM, Ralph Castain <rhc@open-mpi.org> wrote:
I added this to the trunk in r30568 - a new MCA param "ras_tm_smp_mode" will tell us to use the PBS_PPN envar to get the number of slots allocated per node. We then just use the PBS_Nodefile to read the names of the nodes, which I expect will be one for each partition.

Let me know if this solves the problem - I scheduled it for 1.7.5

Thanks!
Ralph

On Jan 31, 2014, at 4:33 PM, Ralph Castain <rhc@open-mpi.org> wrote:

No worries about PBS itself - better to allow you to just run this way. Easy to add a switch for this purpose.

For now, just add --oversubscribe to the command line

On Jan 31, 2014, at 3:32 PM, Paul Hargrove <phhargrove@lbl.gov> wrote:

Ralph,

The mods may have been done by the staff at PSC rather than by SGI.
Note the "_psc" suffix:
$ which pbsnodes
/usr/local/packages/torque/2.3.13_psc/bin/pbsnodes

Their sources appear to be available in the f/s too.
Using "tar -d" to compare that to the pristine torque-2.3.13 tarball show the following files were modified:
torque-2.3.13/src/resmom/job_func.c
torque-2.3.13/src/resmom/mom_main.c
torque-2.3.13/src/resmom/requests.c
torque-2.3.13/src/resmom/linux/mom_mach.h
torque-2.3.13/src/resmom/linux/mom_mach.c
torque-2.3.13/src/resmom/linux/cpuset.c
torque-2.3.13/src/resmom/start_exec.c
torque-2.3.13/src/scheduler.tcl/pbs_sched.c
torque-2.3.13/src/cmds/qalter.c
torque-2.3.13/src/cmds/qsub.c
torque-2.3.13/src/cmds/qstat.c
torque-2.3.13/src/server/resc_def_all.c
torque-2.3.13/src/server/req_quejob.c
torque-2.3.13/torque.spec

I'll provide what assistance I can in testing.
That includes providing (off-list) the actual diffs of PSC's torque against the tarball, if desired.

In the meantime, since -npernode didn't work, what is the right way to say:
  "I have 1 slot but I want to overcommit and run 16 mpi ranks".

-Paul


On Fri, Jan 31, 2014 at 3:20 PM, Ralph Castain <rhc@open-mpi.org> wrote:

On Jan 31, 2014, at 3:13 PM, Paul Hargrove <phhargrove@lbl.gov> wrote:

Ralph,

As I said this is NOT a cluster - it is a 4k-core shared memory machine.

I understood - that wasn't the nature of my question

TORQUE is allocating cpus (time-shared mode, IIRC), not nodes.
So, there is always exactly one line in $PBS_NODESFILE.

Interesting - because that isn't the standard way Torque behaves. It is supposed to put one line/slot in the nodefile, each line containing the name of the node. Clearly, SGI has reconfigured Torque to do something different.


The system runs as 2 partitions of 2k-cores each.
So, the contents odf$PBS_NODESFILE has exactly 2 possible values, each 1 line.

The values of PBS_PPN and PBS_NCPUS both reflect the size of the allocation.

At a minimum, shouldn't Open MPI be multiplying the lines in $PBS_NODESFILE by the value of $PBS_PPN?

No, as above, that isn't the way Torque generally behaves. It would appear that we need a "switch" here to handle SGI's modifications. Should be doable - just haven't had anyone using an SGI machine before :-)


Additionally, when I try "mpirun -npernode 16 ./ring_c" I am still told there are not enough slots.
Shouldn't that be working with 1 line is $PBS_NODESFILE?

-Paul




On Fri, Jan 31, 2014 at 2:47 PM, Ralph Castain <rhc@open-mpi.org> wrote:
We read the nodes from the PBS_NODEFILE, Paul - can you pass that along?

On Jan 31, 2014, at 2:33 PM, Paul Hargrove <phhargrove@lbl.gov> wrote:

I am trying to test the trunk on an SGI UV (to validate Nathan's port of btl:vader to SGI's variant of xpmem).

At configure time, PBS's TM support was correctly located.

My PBS batch script includes
  #PBS -l ncpus=16
because that is what this installation requires (not nodes, mppnodes, or anything like that).
One is allocating cpus on a large shared-memory machine, not a set of nodes in a cluster.

However, this appears to be causing mpirun to think I have just 1 slot:

+ mpirun -np 2 ./ring_c
--------------------------------------------------------------------------
There are not enough slots available in the system to satisfy the 2 slots 
that were requested by the application:
  ./ring_c

Either request fewer slots for your application, or make more slots available
for use.
--------------------------------------------------------------------------

In case they contain useful info, here are the PBS env vars in the job:

PBS_HT_NCPUS=32
PBS_VERSION=TORQUE-2.3.13
PBS_JOBNAME=qs
PBS_ENVIRONMENT=PBS_BATCH
PBS_HOME=/var/spool/torque
PBS_O_WORKDIR=/usr/users/6/hargrove/SCRATCH/OMPI/openmpi-trunk-linux-x86_64-uv-trunk/BLD/examples
PBS_PPN=16
PBS_TASKNUM=1
PBS_O_HOME=/usr/users/6/hargrove
PBS_MOMPORT=15003
PBS_O_QUEUE=debug
PBS_O_LOGNAME=hargrove
PBS_O_LANG=en_US.UTF-8
PBS_JOBCOOKIE=9EEF5DF75FA705A241FEF66EDFE01C5B
PBS_NODENUM=0
PBS_O_SHELL=/usr/psc/shells/bash
PBS_NCPUS=16
PBS_VNODENUM=0
PBS_QUEUE=debug_r1
PBS_O_MAIL=/var/mail/hargrove
PBS_NODEFILE=/var/spool/torque/aux//314827.tg-login1.blacklight.psc.teragrid.org
PBS_O_PATH=[...removed...]

If any additional info is needed to help make mpirun "just work", please let me know.

However, at this point I am mostly interested in any work-arounds that will let me run something other than a singleton on this system.

-Paul

-- 
Paul H. Hargrove                          PHHargrove@lbl.gov
Future Technologies Group
Computer and Data Sciences Department     Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900
_______________________________________________
devel mailing list
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http://www.open-mpi.org/mailman/listinfo.cgi/devel


_______________________________________________
devel mailing list
devel@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/devel



-- 
Paul H. Hargrove                          PHHargrove@lbl.gov
Future Technologies Group
Computer and Data Sciences Department     Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900
_______________________________________________
devel mailing list
devel@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/devel


_______________________________________________
devel mailing list
devel@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/devel



-- 
Paul H. Hargrove                          PHHargrove@lbl.gov
Future Technologies Group
Computer and Data Sciences Department     Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900
_______________________________________________
devel mailing list
devel@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/devel



_______________________________________________
devel mailing list
devel@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/devel



-- 
Paul H. Hargrove                          PHHargrove@lbl.gov
Future Technologies Group
Computer and Data Sciences Department     Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900



-- 
Paul H. Hargrove                          PHHargrove@lbl.gov
Future Technologies Group
Computer and Data Sciences Department     Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900
_______________________________________________
devel mailing list
devel@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/devel