Dear QE team, I have been having trouble getting multi processing working on Linux systems. The tasks process fine, however it seems the more power I throw at it, the SLOWER it gets.
For example 1hr45mins for 4 cores, 2hr10mins for 24 cores, and 2hr36mins for 3x systems with 24 cores (using the -n 62 option). mpiexec -n 62 -wdir /usr/local/espresso-4.2.1/tests -f /home/user/mpiMachinefile.txt ../bin/pw.x -inp /home/user/my_espresso_dir/A1N.newname.in Am I launching mpdboot with the right option? there are three systems. mpdboot -n 3 -f ~/mpiMachinefile.txt & I was first trying to get it working with PARA_PREFIX and PARA_POSTFIX but I had that hang issue with nothing actually happening so this method of running mpiexec from the terminal is getting very close. (mpiMachinefile.txt is shown below..) lserver3:24 lserver4:24 lserver5:24 any help appreciated, thank you, Nick - Linux Administrator. ____________________________________________________________ Share photos & screenshots in seconds... TRY FREE IM TOOLPACK at http://www.imtoolpack.com/default.aspx?rc=if1 Works in all emails, instant messengers, blogs, forums and social networks.
