[MPICH2-dev] An issue with MPI_type_struct and MPI_Isend

[Ezhov, Dmitry]

Dear Sirs,

 

We are having a problem using MPI_Type_struct and MPI_Isend in one of
applications.

We got the following error message (in case of 2 MPI processes):

 

Assertion failed in file gen_segment.c at line 615: cur_elmp->curcount
>= 0

[cli_1]: aborting job:

internal ABORT - process 1

Assertion failed in file gen_segment.c at line 615: cur_elmp->curcount
>= 0

[cli_0]: aborting job:

internal ABORT - process 0

 

We created a simple test that reproduces the problem. This test is in
the attached file.

The issue was reproduced both with mpich2-1.0.3 and mpich2-1.0.4p1.

 

Please note: if you decrease a value of EL_COUNT to 1130 then the test
will work OK.

 

Do you know anything about this problem?

 

Thank you in advance.

 

-- 

Best regards.

 

Dmitry Ezhov

Software Engeneer,

 

Intel SSG/DPD/Parallel Solution Lab,

Russia, Sarov.

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