On Oct 15 2012, Iliev, Hristo wrote:
Numeric differences are to be expected with parallel applications. The
basic reason for that is that on many architectures floating-point
operations are performed using higher internal precision than that of the
arguments and only the final result is round
M
To: Open MPI Developers
Subject: [OMPI devel] MPI_Reduce() is losing precision
Hi All,
I am having a strange problem with the floating precision. I get correct
precision when I launch with one process, but when the same code is launched
with 2 or more process I am losing precision in
Hi All,
I am having a strange problem with the floating precision. I get correct
precision when I launch with one process, but when the same code is launched
with 2 or more process I am losing precision in MPI_Redcue(..., MPI_FLOAT,
MPI_SUM..); call. Output from my code
(admin)host:~$ mpirun -n
