View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000613 | ThirdParty | Bug | public | 2012-08-03 15:03 | 2015-01-18 19:09 |
| Reporter | wyldckat | Assigned To | henry | ||
| Priority | normal | Severity | minor | Reproducibility | sometimes |
| Status | resolved | Resolution | fixed | ||
| Summary | 0000613: MPICH2 can't handle "make -j 2" or more | ||||
| Description | It has recently come to my attention that MPICH2 is unable to handle parallel builds of it's own source code. The reason is described here: http://trac.mcs.anl.gov/projects/mpich2/ticket/170 This apparently has been fixed with the release of MPICH2 1.5a1: http://wiki.mcs.anl.gov/mpich2/index.php/Frequently_Asked_Questions#Q:_The_build_fails_when_I_use_parallel_make. Therefore, I suggest that at least a comment is placed at "ThirdParty-2.1.x/Allwmake", for MPICH2's; perhaps something like this: # Uncomment for MPICH2 1.5a1 or above #make -j $WM_NCOMPPROCS && make install # For MPICH2 below 1.5a1. Comment the line otherwise make && make install | ||||
| Steps To Reproduce | 1. Use a multi-core machine. 2. Use WM_MPLIB=MPICH and unpack the source code for the respectively defined version. 3. Define WM_NCOMPPROCS with a value larger than 1 in the shell environment. 4. Run Allwmake in the ThirdParty folder. Odds are MPICH2 will not build successfully. | ||||
| Additional Information | The thread where I discovered this issue: http://www.cfd-online.com/Forums/openfoam-installation/105357-openfoam210-compilation-error-mpicxx-h-file.html And my apologies, because several months ago I think I was the one (or one of) that reported about using -j for building the MPIs... Last but not least: I haven't compared performances between the latest Open-MPI and MPICH2 versions, so I don't know if there is any benefit in using MPICH2. | ||||
| Tags | No tags attached. | ||||
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I believe this issue still stands and the proposed fix is still applicable. The updated link to the FAQ is this one: https://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_The_build_fails_when_I_use_parallel_make. |
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Resolved by commit 95f52d790fc9ea6c851cbea1f4f7b4de208bdf59 |
