simulation time

Tensian · October 17, 2013, 11:17

Hi everyone,

Anybody knows how can compute the simulation time in OpenFOAM? I mean the time (hours) that the simulation is running. I want to know how much time does it takes for different mesh resolution.

Thanks in advance!

akidess · October 17, 2013, 11:32

Run a representative sample, then extrapolate.

Tensian · October 17, 2013, 12:06

Thanks for your answer, but I guess that there will be some commands in OF or even Linux (Ubuntu in my case) which register when the simulation starts (for example start=19:05) and ends (10:33), so I can compute how long the simulation takes.

akidess · October 17, 2013, 12:22

Typically OpenFOAM solvers print clock time and CPU time. Linux has a "time" command: http://man7.org/linux/man-pages/man7/time.7.html

Tensian · October 17, 2013, 13:30

Oh thanks Anton,

I realized that at the end of every iteration in the log file it´s detailed execution time and clock time!

Sorry for that stupid question and thanks for being patient!

October 17, 2013, 11:17	simulation time	#1
Tensian Senior Member James Join Date: May 2013 Posts: 116 Rep Power: 12	Hi everyone, Anybody knows how can compute the simulation time in OpenFOAM? I mean the time (hours) that the simulation is running. I want to know how much time does it takes for different mesh resolution. Thanks in advance!

October 17, 2013, 11:32		#2
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 29	Run a representative sample, then extrapolate. Haitham Osman CFD likes this. __________________ On twitter @akidTwit Spend as much time formulating your questions as you expect people to spend on their answer.

October 17, 2013, 12:22		#4
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 29	Typically OpenFOAM solvers print clock time and CPU time. Linux has a "time" command: http://man7.org/linux/man-pages/man7/time.7.html __________________ On twitter @akidTwit Spend as much time formulating your questions as you expect people to spend on their answer.

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October 17, 2013, 12:06		#3
Tensian Senior Member James Join Date: May 2013 Posts: 116 Rep Power: 12	Thanks for your answer, but I guess that there will be some commands in OF or even Linux (Ubuntu in my case) which register when the simulation starts (for example start=19:05) and ends (10:33), so I can compute how long the simulation takes.

October 17, 2013, 13:30		#5
Tensian Senior Member James Join Date: May 2013 Posts: 116 Rep Power: 12	Oh thanks Anton, I realized that at the end of every iteration in the log file it´s detailed execution time and clock time! Sorry for that stupid question and thanks for being patient!