I'm afraid we were unable to support xgrid after the 1.2 series as no developer had access to an xgrid server. I recently received a complimentary copy of OSX-server from Apple, and I expect to restore xgrid support at some point in the 1.5 series.

It looks like you are hitting some issue with 1.2 relating to a change in xgrid between OSX versions. I personally won't be going back that far to deal with xgrid issues, so I would suggest sticking with 10.5 if xgrid support is required.

Alternatively, you can just use OMPI's rsh support to do the launch. Get an xgrid allocation (I don't know enough about xgrid yet to tell you all the details), create a hostfile with that info, and then mpirun -hostfile <file> -mca plm rsh ...  (assuming you use OMPI 1.4.x).



On Thu, Jul 29, 2010 at 12:20 PM, Beatty, Daniel D CIV NAVAIR, 474300D <daniel.beatty@navy.mil> wrote:
Greetings all,
I am running into some trouble using OpenMPI with OSX 10.6.4 in a Kerberized XGrid environment.  Note, I did not have this trouble before in the OSX 10.5.8 Kerberized XGrid environment.

The pattern of this trouble is as follows:
1.  User submits a mpi job entering "mpirun -np 4 hello",  to use a simple hello world MPI example.
2.  mpirun will submit the job to XGrid.
3.  A set of orted jobs get distributed to the machines, under the kerberized user's name.
4.  In the case of the OpenMPI 1.2.8, 1.2.3 compiled for gfortran, 1.2.8 compiled for gfortran, and 1.2.9 that comes with OSX 10.6.4, it will actually spawn the processes on the machine.

It comes back with the following exception:
2010-07-29 10:25:49.063 mpirun[949:903] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSKVONotifying_XGConnection<0x100130f30> finalize]: called when collecting not enabled'
*** Call stack at first throw:
(
       0   CoreFoundation                      0x00007fff811f2cc4 __exceptionPreprocess + 180
       1   libobjc.A.dylib                     0x00007fff851820f3 objc_exception_throw + 45
       2   CoreFoundation                      0x00007fff8120d9f1 -[NSObject(NSObject) finalize] + 129
       3   mca_pls_xgrid.so                    0x0000000100297ce3 -[PlsXGridClient dealloc] + 419
       4   mca_pls_xgrid.so                    0x0000000100297837 orte_pls_xgrid_finalize + 40
       5   libopen-rte.0.dylib                 0x000000010002d0f9 orte_pls_base_close + 249
       6   libopen-rte.0.dylib                 0x0000000100012027 orte_system_finalize + 119
       7   libopen-rte.0.dylib                 0x000000010000e968 orte_finalize + 40
       8   mpirun                              0x00000001000011ff orterun + 2042
       9   mpirun                              0x0000000100000a03 main + 27
       10  mpirun                              0x00000001000009e0 start + 52
       11  ???                                 0x0000000000000004 0x0 + 4
)
terminate called after throwing an instance of 'NSException'
[bigmac:00949] *** Process received signal ***
[bigmac:00949] Signal: Abort trap (6)
[bigmac:00949] Signal code:  (0)
[bigmac:00949] [ 0] 2   libSystem.B.dylib                   0x00007fff833e435a _sigtramp + 26
[bigmac:00949] [ 1] 3   ???                                 0x00007fff5fbff500 0x0 + 140734799803648
[bigmac:00949] [ 2] 4   libstdc++.6.dylib                   0x00007fff80e525d2 __tcf_0 + 0
[bigmac:00949] [ 3] 5   libobjc.A.dylib                     0x00007fff85185d29 _objc_terminate + 100
[bigmac:00949] [ 4] 6   libstdc++.6.dylib                   0x00007fff80e50ae1 _ZN10__cxxabiv111__terminateEPFvvE + 11
[bigmac:00949] [ 5] 7   libstdc++.6.dylib                   0x00007fff80e50b16 _ZN10__cxxabiv112__unexpectedEPFvvE + 0
[bigmac:00949] [ 6] 8   libstdc++.6.dylib                   0x00007fff80e50bfc _ZL23__gxx_exception_cleanup19_Unwind_Reason_CodeP17_Unwind_Exception + 0
[bigmac:00949] [ 7] 9   libobjc.A.dylib                     0x00007fff85182192 object_getIvar + 0
[bigmac:00949] [ 8] 10  CoreFoundation                      0x00007fff8120d9f1 -[NSObject(NSObject) finalize] + 129
[bigmac:00949] [ 9] 11  mca_pls_xgrid.so                    0x0000000100297ce3 -[PlsXGridClient dealloc] + 419
[bigmac:00949] [10] 12  mca_pls_xgrid.so                    0x0000000100297837 orte_pls_xgrid_finalize + 40
[bigmac:00949] [11] 13  libopen-rte.0.dylib                 0x000000010002d0f9 orte_pls_base_close + 249
[bigmac:00949] [12] 14  libopen-rte.0.dylib                 0x0000000100012027 orte_system_finalize + 119
[bigmac:00949] [13] 15  libopen-rte.0.dylib                 0x000000010000e968 orte_finalize + 40
[bigmac:00949] [14] 16  mpirun                              0x00000001000011ff orterun + 2042
[bigmac:00949] [15] 17  mpirun                              0x0000000100000a03 main + 27
[bigmac:00949] [16] 18  mpirun                              0x00000001000009e0 start + 52
[bigmac:00949] [17] 19  ???                                 0x0000000000000004 0x0 + 4
[bigmac:00949] *** End of error message ***
Abort trap


In the case of OpenMPI 1.4.2, I get even worse errors.

I do not know if this is an XGrid problem or a OMPI problem.  But, it is definitely producing trouble.

Now some have suggested, having XGrid drive OpenMPI, but if XGRID_CONTROLLER_HOSTNAME is set, then how will OpenMPI not try to use XGrid as the launcher?

Any ideas as to how to fix this?




Daniel Beatty
Computer Scientist, Detonation Sciences Branch
Code 4743000
2400 E. Pilot Plant Rd.
China Lake, CA 93555-6107
daniel.beatty@navy.mil
(760) 939-7097


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