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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi MPI Developers,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I have a problem when using the MPICH2 with my research model. The system on our computer is Utunbu. When I use the MPICH2-1.2.1.1-4 with 4 CPUs to run my model, I got the error messages as follow:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>============================================================================<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Fatal error in PMPI_Allgather: Invalid buffer pointer, error stack:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>PMPI_Allgather(958): MPI_Allgather(sbuf=0x23c625f0, scount=1, MPI_INTEGER, rbuf=0x23c625f0, rcount=1, MPI_INTEGER, MPI_COMM_WORLD)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> failed<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>PMPI_Allgather(931): Buffers must not be aliased<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Fatal error in PMPI_Allgather: Internal MPI error!, error stack:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>PMPI_Allgather(958)......: MPI_Allgather(sbuf=0x10c1cf18, scount=1, MPI_INTEGER, rbuf=0x10c1cf10, rcount=1, MPI_INTEGER, MPI_COMM_<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>WORLD) failed<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather_impl(805).:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather(766)......:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather_intra(144):<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Localcopy(357)......: memcpy arguments alias each other, dst=0x10c1cf18 src=0x10c1cf18 len=4<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Fatal error in PMPI_Allgather: Internal MPI error!, error stack:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>PMPI_Allgather(958)......: MPI_Allgather(sbuf=0x1177ff14, scount=1, MPI_INTEGER, rbuf=0x1177ff10, rcount=1, MPI_INTEGER, MPI_COMM_<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>WORLD) failed<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather_impl(805).:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather(766)......:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather_intra(144):<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Localcopy(357)......: memcpy arguments alias each other, dst=0x1177ff14 src=0x1177ff14 len=4<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Fatal error in PMPI_Allgather: Internal MPI error!, error stack:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>PMPI_Allgather(958)......: MPI_Allgather(sbuf=0x11256f1c, scount=1, MPI_INTEGER, rbuf=0x11256f10, rcount=1, MPI_INTEGER, MPI_COMM_<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>WORLD) failed<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather_impl(805).:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather(766)......:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Allgather_intra(144):<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>MPIR_Localcopy(357)......: memcpy arguments alias each other, dst=0x11256f1c src=0x11256f1c len=4<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>rank 3 in job 19 ocean_53883 caused collective abort of all ranks<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> exit status of rank 3: return code 1<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>============================================================================<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I’ve changed other versions of MPICH2, such as version 1.4, 1.2, 1.1, 1.1.1, found that I can’t fix this problem.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Could anyone please give me any suggestion or clue? I will appreciate for that.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Miao<o:p></o:p></span></p></div></body></html>