TAGGED: fluent, parallel-computing, parallel-processing
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May 15, 2024 at 9:50 amXile SHAOSubscriber
Dear
I m trying to run a "no-cartesien" mesh in fluent . Using it parallel option as following :Â
/parallel/partition/auto/use-case-file-method n
/parallel/partition/auto/method cartesian-axes
/parallel/partition/reorder-partition
/parallel/partition/print-active-partitionsÂ
/parallel/check-verbosity 2
/parallel/checkI also try with other option like "principal-axes" and i think the problem is that partition of mesh isn't balanced.
I got the following warning for all process (running on 30procs):
 Checking load balance. Checking system load. Checking CPU clock frequency. Checking memory load. WARNING! Memory utilization is very high or imbalanced. WARNING! Current session is using more than 80% of the available memory on some machines.     Current session is using 163.337 GB out of the available 187.403 GB on machine node017. Checking interconnect. WARNING! Load is imbalanced. WARNING! Solid cell counts are imbalanced (cell weights are balanced).     Process 0: Solid cell count deviation is 175.1%, cell weight deviation is -0.1%. WARNING! Fluid cell counts are imbalanced (cell weights are balanced).     Process 0: Fluid cell count deviation is -43.5%, cell weight deviation is -0.1%. WARNING! Solid cell counts are imbalanced (cell weights are balanced).     Process 1: Solid cell count deviation is 104.3%, cell weight deviation is -0.1%.ÂÂIn the way , i want to see if the partition is correctly order and that is the output :> /parallel/partition/print-active-partitionsÂ>> 30 Active Partitions:  P  Cells I-Cells Cell Ratio  Faces I-Faces Face Ratio Neighbors Load Ext Cells  F-Cells  S-Cells  0 145290  4884   0.034 457751  7652   0.017     4  1    5006   65866   79424  1 145378  8543   0.059 452578  12697   0.028     8  1    8788   86405   58973  2 145361  7119   0.049 454364  10323   0.023     4  1    7188  102239   43122  3 145377  10366   0.071 450652  14701   0.033     7  1   10579  126205   19172  4 145584  7339   0.050 454106  10735   0.024     4  1    7430  106661   38923  5 145539  13048   0.090 453496  19052   0.042    10  1   13442  105854   39685  6 145536  9716   0.067 454880  14703   0.032     8  1   10042   99049   46487  7 145483  11241   0.077 452842  16733   0.037     9  1   11559  101565   43918  8 145631  10022   0.069 451939  14836   0.033     5  1   10208  123057   22574  9 145487  14051   0.097 449089  21125   0.047     9  1   14488  145465    22  10 145518  10708   0.074 451541  15769   0.035     6  1   10938  125493   20025  11 145405  11143   0.077 451167  16991   0.038     6  1   11375  127189   18216  12 145388  13333   0.092 447509  19929   0.045     8  1   13749  145388     0  13 145502  14567   0.100 448691  22614   0.050    11  1   15050  145472    30  14 145393  12595   0.087 451950  18569   0.041    11  1   13012  123905   21488  15 145508  6176   0.042 454154  9097   0.020     3  1    6238  102814   42694  16 145483  10696   0.074 452702  16155   0.036     8  1   10952  119164   26319  17 145364  8792   0.060 453780  12780   0.028     7  1    8974  109419   35945  18 145502  9531   0.066 452210  14063   0.031     7  1    9689  119981   25521  19 145422  10303   0.071 452716  15278   0.034     7  1   10528  117493   27929  20 145542  6461   0.044 454880  8838   0.019     4  1    6519   99301   46241  21 145410  10062   0.069 452781  14784   0.033     6  1   10290  114807   30603  22 145475  16849   0.116 449424  24347   0.054    13  1   17538  142955   2520  23 145611  13481   0.093 448831  20293   0.045     9  1   13962  145611     0  P  Cells I-Cells Cell Ratio  Faces I-Faces Face Ratio Neighbors Load Ext Cells  F-Cells  S-Cells  24 145376  13541   0.093 448669  19694   0.044     8  1   13929  142734   2642  25 145468  13808   0.095 450072  20008   0.044     9  1   14144  141112   4356  26 145484  11274   0.077 452736  16777   0.037     8  1   11623  109456   36028  27 145547  9611   0.066 452810  14756   0.033     6  1    9782  120004   25543  28 145379  10887   0.075 456352  15897   0.035     8  1   11220  104800   40579  29 145449  9047   0.062 454119  13660   0.030     9  1    9286   78368   67081  ----------------------------------------------------------------------  Collective Partition Statistics:    Minimum  Maximum  Total  Â  ----------------------------------------------------------------------  Cell count               145290  145631  4363892 Â  Mean cell count deviation        -0.1%   0.1%   Â  Partition boundary cell count      4884   16849   319194  Â  Partition boundary cell count ratio   3.4%   11.6%   7.3%   Â  Face count               447509  457751  13332363 Â  Mean face count deviation        -1.1%   1.2%   Â  Partition boundary face count      7652   24347   236428  Â  Partition boundary face count ratio   1.7%   5.4%   1.8%   Â  Fluid cells               65866   145611  3497832 Â  Mean fluid cell deviation        -43.5%  24.9%  Â  Solid cells               0     79424   866060  Â  Mean solid cell deviation        -100.0%  175.1%  Â  Partition neighbor count        3     13    Â  ----------------------------------------------------------------------  Partition Method            Metis                Â  Stored Partition Count         30                 ÂDone. -
May 15, 2024 at 9:52 amXile SHAOSubscriber
Note that the running time is extremely slow ... the mesh cell number is arrount 4000k
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