ENGR 691 (Parallel Computing Technologies) FAQ

• What is mimosa's IP address?
• 130.74.110.15
• How can I update my PATH variable so that I don't have to type the full pathname in order to compile or run my MPI (or other) program?
• Use pico to edit your shell initialization file, ".bashrc", in your login directory. Add the following line at the end: export PATH=/usr/local/apps/mpich/bin/:$PATH To make the PATH value take effect, logout and log back in, or type: . .bashrc An alternative to editing your .bashrc file is to simply copy a correct version of someone elses .bashrc file over yours: cp /home/class/en597109/.bashrc .bashrc
• Where can I learn more about Unix?
• See the Unix Help for Users page, and the Unix at MCSR and UM pages on the MCSR web site.
• Where can I get a copy of Secure Shell for my PC?
• http://www.olemiss.edu/helpdesk/resources.html#software
• Where can I learn more about Secure Shell?
• From the Secure Shell at UM/MCSR web page
• How can I use pico to edit files on mimosa?
• Type: pico filename where filename is the name of the file you want to edit or create. Available commands are listed at the bottom of the screen, and include "Ctrl-W" to save, or "write out", your file, and "Ctrl-X" to "exit" the editor.
• How can I compile my Fortran or C/C++ MPI program on mimosa, and run it with multiple processors using PBS?
• http://www.mcsr.olemiss.edu/educationsubpage.php?pagename=mpi.inc#Run
• How can I copy a file?
• http://www.mcsr.olemiss.edu/unixhelp/tasks/copying.html
• How can I list the contents of the current working directory?
• http://www.mcsr.olemiss.edu/unixhelp/tasks/list.html
• How can I see what the current working directory is (what directory I am in)? and change to another directory?
• http://www.mcsr.olemiss.edu/unixhelp/tasks/cd.html
• How can I make an executable batch script?
• http://www.mcsr.olemiss.edu/unixhelp/scrpt/scrpt1.html
• Why do I get "Command not Found" when I try to execute my a.out (or other program/script)?
• http://www.mcsr.olemiss.edu/computing/unix.html#command