[mvapich-discuss] deadlock with g95/gfortran

[Shaun Rowland]

Aliva Pattnaik wrote:
> Hi,
> 
> I am trying to run the fortran example problem(fpi.f) that comes with mvapich2-
> 0.9.8. I am using g95 to compile it. But while running it with mpiexec its
> getting deadlock, though in the "Top" output I can see the processes taking 99%
> of CPU time. The same situation is arising while using gfortran. But I am able
> to run c example problems compiled with gcc, successfully.
> 
> The cluster that I am using is 64 bit AMD opteron with infiniband.
> 
> I will really appreciate if someone can help me in fixing this problem.
> 
> Thank you very much for your help,
> Aliva

Could you also please try setting this environment variable first:

export GFORTRAN_UNBUFFERED_ALL=y

It seems this fixes the issue.
-- 
Shaun Rowland	rowland at cse.ohio-state.edu
http://www.cse.ohio-state.edu/~rowland/