Run multiple MPI processes as a grid in a new tmux window and multiplex keyboard input to all of them.

• tmux
• OpenMPI
• MPICH
• Reptyr (optional, recommended)

Just copy the tmpi script somewhere in your PATH. One-liner:

curl https://raw.githubusercontent.com/Azrael3000/tmpi/master/tmpi -o /somewhere/in/your/path/tmpi

Parallel debugging with GDB:

tmpi 4 gdb executable

It is advisable to run gdb with a script (e.g. script.gdb) so you can use

tmpi 4 gdb -x script.gdb executable

If you have a lot of processors you want to have set pagination off and add the -q argument to gdb:

tmpi 4 gdb -q -x script.gdb executable

This avoids pagination and the output of the copyright of gdb, which can be a nuissance when you have very small tmux panes.

See usage() in the script

When running without reptyr tmpi might fail without any error message. Installing reptyr should solve the issue.

• Benedikt Morbach
• Arno Mayrhofer (Azrael3000)
• Fabio Luporini
• Shumpei Shiina (s417-lama)