Hi,
I contribute to a tracing library which uses PMPI. It's loaded with
LD_PRELOAD so it interposes libmpi, intercepting MPI_ calls. Since we
upgraded from OpenMPI 1.6.5 to OpenMPI 2.0.1 it seems to have stopped
intercepting the calls from Fortran application, although it continues
to work with C
Thanks guys for your answers.
Actually, the optimization was not disabled, and that was the problem,
compiling it with -o0 solves it. Sorry.
Oscar Mojica
Geologist Ph.D. in Geophysics
SENAI CIMATEC Supercomputing Center
Lattes: http://lattes.cnpq.br/0796232840554652
Hi,
Is there an overlapping section in the MPI part ?
Otherwise, please check :
- declaration type of all the variables (consistency)
- correct initialization of the array "wave" (to zero)
- maybe use temporary variables like
real size1,size2,factor
size1 = dx+dy
size2 = dhx+dhy
factor = dt*size
You might try inserting parentheses so as to specify your preferred order of
evaluation. If using ifort, you would need -assume protect-parens .
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Original Message
From:Oscar Mojica
Sent:Mon, 16 Jan 2017 08:28:05 -0500
Hello everybody
I'm having a problem with a parallel program written in fortran. I have a 3D
array which is divided in two in the third dimension so thats two processes
perform some operations with a part of the cube, using a subroutine. Each
process also has the complete cube. Before each proc
