Hirak, I would correct my previous response. We discussed this issue inside the MPICH team, and we concluded this is a gray area of the standard (it’s not clear when the functions are used with threads). Thus, we are not sure if your use case is right or wrong because you were using different communicators. BTW, you may solve this issue by spawning a new process that connects back. Thanks, Sangmin On Oct 9, 2014, at 7:27 AM, Roy, Hirak <[email protected]<mailto:[email protected]>> wrote: Thanks Sangmin. I would change the strategy to terminate the accept. Regards, Hirak Hi Hirak, I checked your code. I think your code is incorrect because you are trying to establish communication within a single process. You are using two threads and two duplicated communicators, but they are associated with a single process. MPI_Comm_accept() and MPI_Comm_connect() are used to establish communication between “two sets of MPI processes” (i.e., at least two different processes are needed). Please refer to 10.4 Establishing Communication (p. 387) in MPI Standard 3.0. — Sangmin From: Roy, Hirak Sent: Thursday, October 09, 2014 2:17 AM To: [email protected]<mailto:[email protected]> Subject: Re: How to terminate MPI_Comm_accept 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
_______________________________________________ discuss mailing list [email protected]<mailto:[email protected]> To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss