J. Nagy: "I am showing you the mesh.... you can just count them if you are bored" me: "whaaaa? i mean hooooow? i mean why?" honestly i love your tutorials sir but i like your comments more :D
Seems, they have improved the scotch algorithm, now, when I ran decomposePar - the upper half was divided by vertical line on two equal parts, the lower part into two equal along the horizontal line
i saw your video but i have not find my solution for this problem......i have been face problem in running the "decomposePar" with "of41" while my whole work has go on "of220". bcoz here processors have not read the different zones i.e. heated,cooling zones. show saturation temperature same as maximum temperature......processors do not read the heater temperature after "mpirun -np.....-parallel" plz...give me valuable suggestions how to resolve this ...
That was a very good and useful tutorial But how can I run the case in parallel mode using the openfoam ming version in Windows? I tried this command (mpirun -np 6 pisofoam -parallel) but it didn't worked
, thank you so much for very informative tutorials. I have an error message while I type decomposePar. I wounder if I can have other contact e-mail regarding my error message to you. Thank you in advance.
no, you cant divide them into 12 virtual cores since OpenFOAM does not operate like that(it will still run tough). The maximum processor core you can use is the available maximum physical core. The documentation also tells that if you are using "1 processor" then calling MPI will cause overhead and actually slows down the process. I would like to believe what he means is "1 core" instead of "1 processor" but why would anyone run mpiruns when they have only one core? I have seen parallel run makes faster in my laptop which has 1 processor(4 physical core) so i am not sure if it is a comment made for older versions. You can find nice highlight in here wiki.openfoam.com/Parallelization_by_Joel_Guerrero
Very informative tutorials, thank you so much... I especially like the light humor at 7:34
complicated things are explained in very simple ways, thank you for making such knowledgeable videos
thank you for your work! This tutorial really help me a lot!
I am glad.
J. Nagy: "I am showing you the mesh.... you can just count them if you are bored"
me: "whaaaa? i mean hooooow? i mean why?"
honestly i love your tutorials sir but i like your comments more :D
I am glad :D
good and detailed tutorial series :)
Thanks Sir :)
Seems, they have improved the scotch algorithm, now, when I ran decomposePar - the upper half was divided by vertical line on two equal parts, the lower part into two equal along the horizontal line
Thank you for your input!
i saw your video but i have not find my solution for this problem......i have been face problem in running the "decomposePar" with "of41" while my whole work has go on "of220". bcoz here processors have not read the different zones i.e. heated,cooling zones. show saturation temperature same as maximum temperature......processors do not read the heater temperature after "mpirun -np.....-parallel"
plz...give me valuable suggestions how to resolve this ...
That was a very good and useful tutorial
But how can I run the case in parallel mode using the openfoam ming version in Windows?
I tried this command (mpirun -np 6 pisofoam -parallel) but it didn't worked
mpiexec instead of mpirun?
@@OpenFOAMJozsefNagy thanks it worked
, thank you so much for very informative tutorials. I have an error message while I type decomposePar. I wounder if I can have other contact e-mail regarding my error message to you. Thank you in advance.
i have 6 real core but 12 virtual threading , can i decompose in 12 parts ?
You can try, but I do not think, that it will improve the performance.
do you think 6 parallel decompositions works great ?
@@ing.nicola1706 I did not have the time to extensively test it. I would love to hear your opinion on it.
@@OpenFOAMJozsefNagy i will try ...
no, you cant divide them into 12 virtual cores since OpenFOAM does not operate like that(it will still run tough). The maximum processor core you can use is the available maximum physical core. The documentation also tells that if you are using "1 processor" then calling MPI will cause overhead and actually slows down the process. I would like to believe what he means is "1 core" instead of "1 processor" but why would anyone run mpiruns when they have only one core? I have seen parallel run makes faster in my laptop which has 1 processor(4 physical core) so i am not sure if it is a comment made for older versions. You can find nice highlight in here wiki.openfoam.com/Parallelization_by_Joel_Guerrero