TELEMAC-MASCARET Forum: Is V7p2 slower than previous versions? (1/1)

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TOPIC: Is V7p2 slower than previous versions?

Is V7p2 slower than previous versions? 6 years 2 weeks ago #31911

jaydirs

Hi,

I've running some simulations in different computers. However, I've noticed that they are taking longer than they used to take. I mean, running the same cas in two different computers (same computer model) takes about 30% more time with the one that has v7p2 installed. I add that the computers are both -almost- new, so I hope they should run in a very similar time.

My concern is that they might be computing things in a different way or is it that really v7p2 is slower?

I must say that I'm using the same cas with both installations, it was originally created for the v7p0 computer. Since my fudaa version didn't have v7p2 as option, I used the same because I thought there were no important differences among them.
I'd like to point out something that happened to me with this case:

In my v7p0 cas, I used the keyword:
INITIAL VALUES OF TRACERS =0
But at the same time I modified the condin.f to have some special IC of tracers. For some reason I thought that the keyword should be there even if they are defined in the fortran file. My v7p0 installation did the right thing and set the conditions as prescribed in the fortran file, ignoring the cas.
But my v7p2 installation ignored my fortran and set the tracer initial condition as in the cas! As soon as I deleted the INITIAL VALUES OF TRACERS option, it did it as in the fortran.

So from there, I'm now concerned because it takes more time when computing and this difference is not listed in the new things of v7p2.

Any comments are appreciated.

Thanks,
JR

PS: I'm running in windows 10

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Is V7p2 slower than previous versions? 6 years 2 weeks ago #31913

yugi OFFLINE openTELEMAC Guru Posts: 851 Thank you received: 244	You should try with v7p3 to see if it is still slower.
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Is V7p2 slower than previous versions? 6 years 2 weeks ago #31945

jaydirs	I think I'll go back to version 7p0, because it's the one I already tested. Definitely, something is not ok with version 7p2, even when starting TELEMAC, it takes some seconds (or even one minute) to show the first letters. That doesn't happen with version 7p0. Best, JR
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Is V7p2 slower than previous versions? 6 years 2 weeks ago #31916

Lufia	Are you run in parallel? We observed that the partitioning for parallel runs was sometimes slow, which can also depend on the compiler. As a first start it can help to use the validation examples as benchmark. You can increase the simulation time. If the execution time does not differ I would start to compare the execution time for parallel runs.
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Is V7p2 slower than previous versions? 6 years 2 weeks ago #31944

jaydirs	No, I'm not running in paralell. Thanks.
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Is V7p2 slower than previous versions? 6 years 1 week ago #31981

jose2kk OFFLINE Expert Boarder Posts: 161 Thank you received: 59	Hi, I do not think that version is slower than the previous one. I have worked with several versions and have not noticed any difference. Nevertheless, I would advise you to install the last version "v7p3r1" and see if it is still slower. Best Regards, José Andrés.
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