I tried to increase speed of a program with openmpi-1.1.3 by adding
following 4 parameters into openmpi-mca-params.conf file.
and then, I ran my program twice(124 processes on 31 nodes). one with
"mpi_leave_pinned=1", another with "mpi_leave_pinned=0".
All of them were stopped abnormally with "ctrl+c" and "killall -9
After that, I couldn't start to run that program again.
I checked every nodes with "free -m" and I found that huge amount of cached
memory were used in each nodes.
Could this situation be caused by those 4 parameters? IS there anyway to
T. H. Hsieh
MS. Student, NTU, Taiwan.