[mvapich-discuss] Change rndv_window_size

[Satoshi Isono]

Hello everyone,

I couldn't run MPI code with below errors. I think that I have to set larger number than default one as rndv_window_size. How can I set larger buffer size? Could you advise me about it?

I guess I may be able to use these below environment values to control this number. 

   MV2_IBA_EAGER_THRESHOLD
   MV2_VBUF_TOTAL_SIZE

The following is error messages:

Warning! Rndv Receiver is receiving (269136 < 442152) less than as expected
MPI process terminated unexpectedly
Exit code -5 signaled from com-0559 Killing remote processes...
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
MPI process terminated unexpectedly
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
Warning! Rndv Receiver is receiving (269136 < 422928) less than as expected
MPI process terminated unexpectedly
Warning! Rndv Receiver is receiving (269136 < 365256) less than as expected
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
Warning! Rndv Receiver is receiving (269136 < 307584) less than as expected
Warning! Rndv Receiver is receiving (269136 < 288360) less than as expected
Fatal error in MPI_Bcast:
Message truncated, error stack:
MPI_Bcast(1144)........................:
MPI_Bcast(buf=0x6ca4bf0, count=33642, MPI_DOUBLE_PRECISION, root=0, comm=0x84000002) failed
MPIR_Bcast(228)........................: 
MPIDI_CH3U_Post_data_receive_found(439): Message from rank 0 and tag 2 truncated; 288360 bytes received but buffer size is 269136

Regards,
Satoshi Isono