View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000748 | OpenFOAM | Bug | public | 2013-02-14 09:56 | 2014-12-29 11:03 |
| Reporter | Assigned To | henry | |||
| Priority | normal | Severity | minor | Reproducibility | sometimes |
| Status | closed | Resolution | fixed | ||
| OS | Mac OS X | OS Version | 10.7.5 | ||
| Summary | 0000748: foamLog Error | ||||
| Description | It seems like the log file is too big and foamLog can't handle it. It creates a logs file but for example the Ux_0 log contains only one line (0.005 1). | ||||
| Additional Information | Using: log : log database : /Users/robindebroux/OpenFOAM/OpenFOAM-2.1.1/bin/tools/foamLog.db awk file : ./logs/foamLog.awk files to : ./logs Executing: awk -f ./logs/foamLog.awk log awk: ./logs/pFinalRes_0 makes too many open files input record number 45, file log source line number 79 Generated XY files for: CourantMax CourantMean Separator Time Ux UxFinalRes UxIters Uy UyFinalRes UyIters contCumulative contGlobal contLocal e eFinalRes eIters executionTime p pFinalRes pIters rho rhoFinalRes rhoIters End | ||||
| Tags | No tags attached. | ||||
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1. How big is the log file? 2. Are you able to use foamLog with smaller log files for the same case? |
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I tried with smaller log files for the same case but I got the same problem. But with other tutorial cases, sometimes it worked (forwardStep) and sometimes not (cavity). I don't understand cos the forwardStep log file is bigger than the cavity log file. |
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There seems to be a known limitation on the number of open files in (g)awk. E.g. http://stackoverflow.com/questions/9518555/unix-split-to-n-files-using-regexp-to-name-destination-file |
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The problem seems to occure only on Mac O.S |
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@robdeb: Try running this before a foamLog that you know that will make awk stop ahead of time: ulimit −n 1024 Source: http://openfoamwiki.net/index.php/Howto_install_OpenFOAM_v21_Mac#Apply_patches_and_tweaks |
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I did what you said but it still doesn't work. What does the value 1024 represent? Can I change that value? |
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I don't have a Mac to confirm this, but on Linux: $ help ulimit [...] -n the maximum number of open file descriptors [...] If LIMIT is given, it is the new value of the specified resource; the special LIMIT values `soft', `hard', and `unlimited' stand for the current soft limit, the current hard limit, and no limit, respectively. Otherwise, the current value of the specified resource is printed. If no option is given, then -f is assumed. ___________ If the same help appears to you, try: ulimit -n unlimited |
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Working on Software OS X 10.9.4 (13E28) I could reproduce the problem. AWK works for less or equal to 16 variables to look up. Otherwise Crash. Maybe that hint helps anyone to bugfix ... I am still beginner ;) |
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Looks like this is a BSD vs GNU implementation issue, since similarly the same happens with "sed". Mac OS X uses the BSD implementations by default, while Linux uses the GNU implementations. A few references: - http://www.cfd-online.com/Forums/openfoam-paraview/133053-uniformfixedvalue-table-paraview-doesnt-show-field.html#post519958 - https://twitter.com/bgschaid/status/536531170868363264 A possible solution would be to enforce "gawk" and "gsed" as the default application names used by OpenFOAM's scripts... but that would be trying to fix a non-problem for the supported systems, I guess... The quickest solution would be to stipulate on the installation pages that using GNU's variants of sed/awk/sh is a must for OpenFOAM's scripts. ---- PS: @Marv94: Quoting Michael from the post on the first link: «I would suggest you to install gsed via MacPorts, Fink, or any other source you might want to use.» Same applies to "gawk". |
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We will add a statement in the source installation instructions that OpenFOAM is tested on GNU-based UNIX variants and depends on recent GNU utilities. To port OpenFOAM to older UNIX variants it may be necessary to first install the GNU utilities. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2013-02-14 09:56 |
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New Issue | |
| 2013-02-16 10:31 | wyldckat | Note Added: 0001920 | |
| 2013-02-19 09:52 |
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Note Added: 0001927 | |
| 2013-02-19 17:27 |
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Note Added: 0001931 | |
| 2013-03-05 08:59 |
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Note Added: 0001951 | |
| 2013-03-05 09:25 | wyldckat | Note Added: 0001952 | |
| 2013-03-05 10:23 |
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Note Added: 0001953 | |
| 2013-03-05 10:27 | wyldckat | Note Added: 0001954 | |
| 2013-03-05 10:38 | wyldckat | Note Edited: 0001954 | |
| 2014-10-08 12:58 |
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Note Added: 0003244 | |
| 2014-12-29 10:54 | wyldckat | Note Added: 0003373 | |
| 2014-12-29 10:56 | wyldckat | Note Edited: 0003373 | |
| 2014-12-29 11:03 | henry | Note Added: 0003374 | |
| 2014-12-29 11:03 | henry | Status | new => closed |
| 2014-12-29 11:03 | henry | Assigned To | => henry |
| 2014-12-29 11:03 | henry | Resolution | open => fixed |
