Hi Pavan, Here is the code attached. Let me know if you think the code is incorrect. I used MPI-3.0.4 with sock device. Compile command : export MPI_ROOT = /home/hroy/local/mpich-3.0.4/linux_x86_64 #export MPI_ROOT = /home/hroy/local/mpich-3.0.4.nemesis/linux_x86_64 export MPI_BIN = ${MPI_ROOT}/bin export MPI_LIB = ${MPI_ROOT}/lib export INCLUDE_DIR = ${MPI_ROOT}/include compile: g++ -g main.cpp -I ${INCLUDE_DIR} ${MPI_LIB}/libmpich.a ${MPI_LIB}/libmpl.a -lpthread Thanks, Hirak Can you send us a simple program that reproduces the issue? - Pavan On Oct 8, 2014, at 2:54 PM, Roy, Hirak <Hirak_Roy at mentor.com<https://lists.mpich.org/mailman/listinfo/discuss>> wrote:

Hi Pavan,

I even tried duping the communicator (MPI_COMM_SELF à DUP1, DUP2) before I do any kind of MPI calls.

Still it does not work.

Thanks,

Hirak

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