[MPICH2 Req #3045] [MPICH2-dev] An issue with MPI_type_struct and MPI_Isend

[Rajeev Thakur]

Yes, I am able to reproduce the problem. We will look into it. In the
meanwhile, if you find a fix for it, let us know :-).
 
Rajeev


  _____  

From: owner-mpich2-dev at mcs.anl.gov [mailto:owner-mpich2-dev at mcs.anl.gov] On
Behalf Of Ezhov, Dmitry
Sent: Thursday, December 07, 2006 8:26 AM
To: mpich2-dev at mcs.anl.gov
Cc: Supalov, Alexander; Voronov, German; Ryzhykh, Alexey; Derbunovich,
Andrey; Cohn, Evan; Michaud, Joseph; mpich2-maint at mcs.anl.gov
Subject: [MPICH2 Req #3045] [MPICH2-dev] An issue with MPI_type_struct and
MPI_Isend



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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