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issue with purgeWrite in processor* files for parallel runs with simpleFoam |
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September 21, 2021, 03:49 |
issue with purgeWrite in processor* files for parallel runs with simpleFoam
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#1 |
Member
Join Date: Apr 2021
Posts: 41
Rep Power: 4 |
Hello,
I couldn't find anything on the forum about this issue which is quite annoying for the disk space for long simulations in steady state parallelized case. How do you control the number of iteration subfolders in the processor* files with simpleFoam ? In my case, whatever value I set for purgeWrite in the the controlDict file, the iteration subfolders are accumulating themselves. None is deleted and moreover a (small) writeInterval seems applied but it is not equal to the one set in the controlDict. Does anyone have any idea or suggestion on this ? Thank you below an extract of my controlDict file: Code:
FoamFile { version 2.0; format ascii; class dictionary; object controlDict; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // application simpleFoam; startFrom latestTime; stopAt endTime; endTime 4500; deltaT 1; writeControl timeStep; writeInterval 100; purgeWrite 1; writeFormat binary; writePrecision 6; writeCompression off; timeFormat general; timePrecision 6; runTimeModifiable true; Code:
/case$ ls processor0 0 1112 1228 1342 1458 1572 1687 1800 1915 2032 2158 2284 325 440 555 670 785 90 1 1113 1229 1343 1459 1573 1688 1801 1916 2033 2159 2285 326 441 556 671 786 900 10 1114 123 1344 146 1574 1689 1802 1917 2034 216 2286 327 442 557 672 787 901 100 1115 1230 1345 1460 1575 169 1803 1918 2035 2161 2287 328 443 558 673 788 902 1001 1116 1231 1346 1461 1576 1690 1804 1919 2036 2162 2288 329 444 559 674 789 903 1002 1117 1232 1347 1462 1577 1691 1805 192 2037 2163 2289 33 445 56 675 79 904 1003 1118 1233 1348 1463 1578 1692 1806 1920 2038 2164 229 330 446 560 676 790 905 1004 1119 1234 1349 1464 1579 1693 1807 1921 2039 2165 2291 331 447 561 677 791 906 1005 112 1235 135 1465 158 1694 1808 1922 204 2166 2292 332 448 562 678 792 907 1006 1120 1236 1350 1466 1580 1695 1809 1923 2041 2167 2293 333 449 563 679 793 908 1007 1121 1237 1351 1467 1581 1696 181 1924 2042 2168 2294 334 45 564 68 794 909 1008 1122 1238 1352 1468 1582 1697 1810 1925 2043 2169 2295 335 450 565 680 795 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September 21, 2021, 04:23 |
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#2 |
Senior Member
Yann
Join Date: Apr 2012
Location: France
Posts: 1,026
Rep Power: 25 |
Hi,
I don't see anything wrong with your controlDict parameters and I never had issues with purgeWrite so far. What is written inside the timestep directories? Do you see all the fields or just some of them? Usually this happens when you use function objects which creates fields in time step directories at a different writeInterval. I hope this helps, Yann |
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September 22, 2021, 09:37 |
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#3 |
Member
Join Date: Apr 2021
Posts: 41
Rep Power: 4 |
many thanks Yann,
I found the trouble was coming from the yPlus functionObject in which turned 'enabled' to 'false' instead of 'true' solved the issue. I am using OFv2012. |
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September 22, 2021, 13:38 |
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#4 |
Senior Member
Yann
Join Date: Apr 2012
Location: France
Posts: 1,026
Rep Power: 25 |
Hello,
If you still want use the function, instead of deactivating it you can change the writeControl to writeTime: Code:
yPlus { type yPlus; libs (fieldFunctionObjects); enabled true; executeControl writeTime; writeControl writeTime; } Another way around is just to remove it and execute the function after the simulation is done with this command: Code:
mpirun -np your_core_number simpleFoam -postProcess -func yPlus -latestTime -parallel Yann |
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