Hi There,
I am facing slowness running numpy code using mpirun with openmpi 1.8.1 version. With Open MPI (1.8.1) --------------------- > /usr/lib64/openmpi/bin/mpirun -version mpirun (Open MPI) 1.8.1 Report bugs to http://www.open-mpi.org/community/help/ > time /usr/lib64/openmpi/bin/mpirun -np 1 python -c 'import numpy; numpy.linalg.svd(numpy.eye(1000))' real 23.75 user 6.95 sys 16.68 > With Open MPI (1.5.4): --------------------- > /usr/lib64/openmpi/bin/mpirun -version mpirun (Open MPI) 1.5.4 Report bugs to http://www.open-mpi.org/community/help/ > time /usr/lib64/openmpi/bin/mpirun -np 1 python -c 'import numpy; numpy.linalg.svd(numpy.eye(1000))' real 1.35 user 2.11 sys 0.71 > Do you guys have any idea why the above function is 10-15x with openmpi version 1.8.1 Thanks, Kishor
