[mpich-discuss] MPI problem on BGP/ZeptoOS

Robert Latham robl at mcs.anl.gov
Tue Jan 27 12:30:52 CST 2009

On Tue, Jan 27, 2009 at 03:47:26PM +0100, Francisco Javier García Blas wrote:
> I have a problem with ZeptoOS on BGP. Some weeks ago, I updated to the  
> last version of ZeptoOS (now I am using version the lasted version,  
> 2509). ZeptoOS kernel images look work fine all the time.
> First, I checked this new version submiting a simple mpi test (included 
> in the comm folder of ZeptoOS). It worked fine.
> My next test consisted in running a I/O job (BTIO benchmark, 64  
> processes, type B).  I found two bugs in ROMIO: the first one calling  
> MPI_Type_get_envelope primitive (the nints parameter returns a wrong  
> value in flatten.c) and the second one inside ad_write_coll.c (locked  
> into ADIOI_Calc_my_off_len).

Hi Javi.  Definitely sounds like you found a bug.  did you also find
this behavior on a linux system, or only on bluegene?


Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B

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