ompi_info --show-failed feature
#3338
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* Add a path for failed component load information to be reported up. * This allows ompi_info to display this information inline to make it easier for folks to see if the component is present but failed for some reason. Most likely a missing library, but could be a libnl conflict. * Add MCA parameter to enable this feature: - `mca_base_component_track_load_errors` takes a boolean - Default: `false` Signed-off-by: Joshua Hursey <jhursey@us.ibm.com>
* `ompi_info --show-failed` will include the failed components along with information about why they failed. Signed-off-by: Joshua Hursey <jhursey@us.ibm.com>
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@jsquyres I think this is ready to commit. Since it navigates through the MCA data structures I wanted to get your 👀 on it before committing. |
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bot:ompi:retest |
jsquyres
approved these changes
May 16, 2017
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The
mca_component_show_load_errorsMCA parameter will display an error tostddiagwhen adlopenfails. But it would be nice to format that information and report it inline inompi_info.This makes it easy to see the failed component in the list next to other components of the same framework. Handy if you are dropping a module into a build on a system and one of the shared libraries it depends on is not present. Instead of seeing no errors (say if the sysadmin turned off
mca_component_show_load_errorsin the default params file), they will see it listed. For example, dropping the LSF modules into a build on a system that doesn't have the necessary supporting libraries just yet.shell$ ompi_info --show-failed | grep fail MCA ess: lsf (failed to load) libbat.so: cannot open shared object file: No such file or directory MCA plm: lsf (failed to load) libbat.so: cannot open shared object file: No such file or directory MCA ras: lsf (failed to load) libbat.so: cannot open shared object file: No such file or directory