[mpich-discuss] Assertion failed in file src/mpid/ch3/src/ch3u_handle_send_req.c at line 61 (RMA && Derived datatypes)

[Victor Vysotskiy]

Dear Developers,

recently I have mentioned a problem with assertion failed in file src/mpid/ch3/src/ch3u_handle_send_req.c:

http://lists.mpich.org/pipermail/discuss/2014-October/003354.html

Finally, I was able to narrow problem to a small piece of code. Enclosed please find the test-bed code. In order to reproduce the problem, please compile and execute it with the following arguments:


mpicc  mpi_tvec2_rma.c -o mpi_tvec2_rma

mpirun -np 8 ./mpi_tvec2_rma 80 400000

Assertion failed in file src/mpid/ch3/src/ch3u_handle_send_req.c at line 61: win_ptr->at_completion_counter >= 0

internal ABORT - process 0

===================================================================================

=   BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES

=   PID 12900 RUNNING AT n6

=   EXIT CODE: 1

=   CLEANING UP REMAINING PROCESSES

=   YOU CAN IGNORE THE BELOW CLEANUP MESSAGES

===================================================================================


However, everything works out with "8 400000", and with "16 400000". This problem is reproducible on my 4-core laptop as well as on the 16-core HP SL203S GEN8 compute node. The GCC v4.7.3 and Intel v15.0.0 were used to compile MPICH v3.1.3 on my laptop and on HP SL203S, respectively. Moreover, the  MPICH v3.1.3 used includes the '920661c3931' commit by Xin Zhao.


Could you please comment on this issue? Is it a bug in MPICH, or something is wrong with the test-bed code attached?


With best regards,

Victor.
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