[gmx-users] internal MPI error: GER overflow

[David]

On Tue, 2002-09-24 at 06:30, Erik Lindahl wrote:
> Hi,
> 
> >
> > NNODES=16, MYRANK=11, HOSTNAME=node11
> > NNODES=16, MYRANK=13, HOSTNAME=node13
> > MPI_Isend: internal MPI error: GER overflow (rank 5, MPI_COMM_WORLD)
> > NNODES=16, MYRANK=4, HOSTNAME=node04
> > NNODES=16, MYRANK=3, HOSTNAME=node03
> > ----------------------------------------------------------------------------- 
There is a flag for mpirun -nger IIRC
However, it can be caused by anything: bug in gromacs or in lam, or
hardware error. Is the bug reproducable? After how many steps of md does
it occur?


> >
> 
> As the message says, it's an internal MPI error and not in Gromacs. I 
> have never seen it myself; unless somebody else
> on the list knows what it is, your best bet is probably to
> 
> 1) recompile the latest version of LAM-MPI (or mpich), fftw and gromacs
> 2) Contact the LAM-MPI authors at www.lam-mpi.org if it doesn't work out :-)

Since you have lam 6.5.6 I assume you have compiled gromacs yourself:
otherwise you may have incomaptibility between lam versions (i.e.
gromacs compiled with another lam version than the one you are using or
lmboot etc.)


-- 
Groeten, David.
________________________________________________________________________
Dr. David van der Spoel, 	Biomedical center, Dept. of Biochemistry
Husargatan 3, Box 576,  	75123 Uppsala, Sweden
phone:	46 18 471 4205		fax: 46 18 511 755
spoel at xray.bmc.uu.se	spoel at gromacs.org   http://zorn.bmc.uu.se/~spoel
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