Fatal error in MPI_Isend: Internal MPI error!, error stack:

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程序调用非阻塞通信函数MPI_Isend()， MPI_Irecv()，接收时有MPI_wait()操作

迭代到第5000多次时出现如下错误：

        5280 -1.272734378291617E-004  1.271885446338949E-004   1.93516788631215      -0.246120726174522       9.005226840169125E-006   1.00000247207768     [cli_3]: aborting job:Fatal error in MPI_Isend: Internal MPI error!, error stack:MPI_Isend(145): MPI_Isend(buf=0x12e37e40, count=5000, MPI_DOUBLE_PRECISION, dest=4, tag=77, MPI_COMM_WORLD, request=0x1890221c) failed(unknown)(): Internal MPI error![cli_2]: aborting job:Fatal error in MPI_Isend: Internal MPI error!, error stack:MPI_Isend(145): MPI_Isend(buf=0x12dbdd20, count=5000, MPI_DOUBLE_PRECISION, dest=3, tag=77, MPI_COMM_WORLD, request=0x1890221c) failed(unknown)(): Internal MPI error![cli_5]: aborting job:Fatal error in MPI_Isend: Internal MPI error!, error stack:MPI_Isend(145): MPI_Isend(buf=0x12f2c080, count=5000, MPI_DOUBLE_PRECISION, dest=6, tag=77, MPI_COMM_WORLD, request=0x1890221c) failed(unknown)(): Internal MPI error![cli_6]: aborting job:Fatal error in MPI_Isend: Internal MPI error!, error stack:MPI_Isend(145): MPI_Isend(buf=0x12fa61a0, count=5000, MPI_DOUBLE_PRECISION, dest=7, tag=77, MPI_COMM_WORLD, request=0x1890221c) failed(unknown)(): Internal MPI error!rank 6 in job 2  v3901_33329   caused collective abort of all ranks  exit status of rank 6: return code 13 rank 5 in job 2  v3901_33329   caused collective abort of all ranks  exit status of rank 5: return code 13 rank 2 in job 2  v3901_33329   caused collective abort of all ranks  exit status of rank 2: return code 13

原因尚不知，有时会出现out of memory错误，难道是MPI_Isend()函数把内存耗尽了？不应该啊