define cutting plane - parallel running
Hi,
I'm looking for a solution to define a cutting plane for parallel running. My domain is a U pipe, with an inlet lenght different from the outlet one. Looks like that: inlet...... xxxxxx .................... x .................... x outlet xxxxxxxxx The problem is that methods simple/metis/herarchical do not cut it at the middle of the U turn, so the interface is not optimal. I could eventually use a manual method, but don't have an example of implementation. Is there another solution? Regards Julien |
Julien,
how many processors? It's important to have an equal amount of cells on each processor. The size of the processorProcessor patch is secondary. Henrik |
Only 2 processors for the moment, about 160k cells each...and 1200 faces for interface.
I have no temporal gain compared to monocore simulation... |
Dear Julien,
did you start your simulation in parallel? Code:
mpirun -np 2 julienFoam -parallel |
yes, I did that correctly I think, I used that command line, and my 2 processors are busy.
I have a gain in executionTime, but not in clockTime (and the computer isn't doing anything else at the same time). I though, maybe my computer is not adapted to that kind of parallel using. (AMD Athlon(tm) Dual Core Processor, Debian 64bit) |
Julien,
your hardware is fine. Quote:
Please check in top that the two processes together consume about the same memory than the single processor process. Which parallel comms library are you using? Quote:
Incidentely, is this a binary installation? If yes, it might be worth a try recompiling everything. Henrik |
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