[maysmech]

Hi,

How can i use parallel run and have output not only in log file, also in terminal window.

Only in log file:

mpirun -np 8 icoFoam -parallel > log &

Only in terminal:

mpirun -np 8 icoFoam -parallel

[cnsidero]

Option 1) Try 'tee'. E.g.

mpirun -np 8 icoFoam -parallel | tee log

Check the man pages for 'tee'

Option 2) Redirect the output to a log file like for your first command:

mpirun -np 8 icoFoam -parallel  > log &

and then use the -f with 'tail' to view log file dynamically:

 tail -f log

Option 3) Use screen:

Open an new screen:

screen

Launch your job:

mpirun -np 8 icoFoam -parallel

Detach your screen: CTRL+A+D

Reattach your screen to view your running job later:

screen -r

I prefer #2 if I'm running on a local workstation and #3 if I'm running remotely. 'screen' is the most flexible and powerful method - I would suggest spending some time to learn how to use 'screen'. Look in the man pages or check the web.

[l_r_mcglashan]

Isn't dumping it all to both screen AND file a bit unnecessary? Why not output it to log and use 'tail log' to look at the log file? Or if you're interested in looking at residuals use foamLog / pyFoam.

[maysmech]

Thanks, i will try to do your suggestions.

[vitormoura]

I was lurking and saw this thread. I got a solution that might help others (since the post is old).
On a second terminal, use this command:

watch -n(secondsinterval) tail -n(numberoflines) logfile

someone gave me that tip to avoid excess of process on simulation.