mpirun--> output be written in both Log file and Terminal

maysmech · January 19, 2011, 12:18

Hi,

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

Only in log file:

Quote:

mpirun -np 8 icoFoam -parallel > log &

Only in terminal:

Quote:

mpirun -np 8 icoFoam -parallel

cnsidero · January 19, 2011, 12:31

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

Code:

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:

Code:

mpirun -np 8 icoFoam -parallel  > log &

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

Code:

 tail -f log

Option 3) Use screen:

Open an new screen:

Code:

screen

Launch your job:

Code:

mpirun -np 8 icoFoam -parallel

Detach your screen: CTRL+A+D

Reattach your screen to view your running job later:

Code:

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 · January 19, 2011, 12:37

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 · January 19, 2011, 14:30

Thanks, i will try to do your suggestions.

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January 19, 2011, 12:31		#2
cnsidero Senior Member Chris Sideroff Join Date: Mar 2009 Location: Ottawa, ON, CAN Posts: 154 Rep Power: 6	Option 1) Try 'tee'. E.g. Code: 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: Code: mpirun -np 8 icoFoam -parallel > log & and then use the -f with 'tail' to view log file dynamically: Code: tail -f log Option 3) Use screen: Open an new screen: Code: screen Launch your job: Code: mpirun -np 8 icoFoam -parallel Detach your screen: CTRL+A+D Reattach your screen to view your running job later: Code: 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.

January 19, 2011, 12:37		#3
l_r_mcglashan Senior Member Laurence R. McGlashan Join Date: Mar 2009 Posts: 345 Rep Power: 12	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. __________________ Laurence R. McGlashan :: Website

January 19, 2011, 14:30		#4
maysmech Senior Member Maysam Join Date: Jan 2010 Posts: 308 Blog Entries: 2 Rep Power: 6	Thanks, i will try to do your suggestions.