Hi,
In my program I am calling MPI_Barrier(MPI_COMM_WORLD), but it seems to cause an error on one node. The node changes depending on how many total nodes I have (it could be 4 or 2). I'm thinking it's MPI_Barrier because I put print statements around it and that's where the program terminates. This is the error message that I get: Signal:11 info.si_errno:0(Success) si_code:1(SEGV_MAPERR) Failing at addr:0xc900000002 [0] func:/opt/openmpi/st/lib/libopal.so.0 [0x2aaaab04dbc8] [1] func:/lib64/libpthread.so.0 [0x3be4f0c530] [2] func:/opt/openmpi/st/lib/openmpi/mca_pml_ob1.so(mca_pml_ob1_recv+0x2a3) [0x2aaaacf26f33] [3] func:/opt/openmpi/st/lib/openmpi/mca_coll_tuned.so(ompi_coll_tuned_barri er_intra_recursivedoubling+0x14a) [0x2aaaad8699ba] [4] func:/opt/openmpi/st/lib/libmpi.so.0(PMPI_Barrier+0xa4) [0x2aaaaad87294] [5] func:Debug/BioRiskAssessmentMpiLibTest(_ZN2BL14CMpiTestRunner11Synchroni zeEv+0xe) [0x490846] [6] func:Debug/BioRiskAssessmentMpiLibTest(_ZN2BL8CMpiTest12FinishedTestEi+0 x3c) [0x490884] [7] func:Debug/BioRiskAssessmentMpiLibTest(_ZN15CMpiProcessTest8RunTestsEv+0 x269) [0x490297] [8] func:Debug/BioRiskAssessmentMpiLibTest(_ZN29CMpiConsequenceCalculatorTes t3RunEP19ompi_communicator_t+0xdf) [0x45a8e7] [9] func:Debug/BioRiskAssessmentMpiLibTest(_ZN2BL14CMpiTestRunner3RunEv+0x60 ) [0x4909ba] [10] func:Debug/BioRiskAssessmentMpiLibTest(main+0x42) [0x44558a] [11] func:/lib64/libc.so.6(__libc_start_main+0xef) [0x3be481c40f] [12] func:Debug/BioRiskAssessmentMpiLibTest(__gxx_personality_v0+0x99) [0x4454b9] *** End of error message *** I'm using version 1.1.2. Not sure if it matters, but before I call the MPI_Barrier I create a comm subset (which in this case happens to be all of the same processes that are in MPI_COMM_WORLD). Does anybody have an idea what might be my problem? Or what I should do to get more information? Thanks! Matt ______________________________ Matt Cupp Battelle Memorial Institute Statistics and Information Analysis
