On Jul 2, 2015, at 12:20 PM, Tom Coles <tco...@mit.edu<mailto:tco...@mit.edu>> wrote:
I see, thanks for the quick reply. In light of this, I'd like to suggest an update to the FAQ entry at http://www.open-mpi.org/faq/?category=tuning#available-mca-params I just noticed that this is covered in question 6, but it is not clear when reading question 8. Thanks for the pointer. I actually started freshening the FAQ data (including topics like this) a few weeks ago, but haven't finished it yet -- it's a low priority-edit kind of thing; I do it while waiting for lengthy compiles, etc. Here's what the new question 8 looks like (it's now question 9): 9. How do I know what MCA parameters are available? The ompi_info command can list the parameters for a given component, all the parameters for a specific framework, or all parameters. Most parameters contain a description of the parameter; all will show the parameter's current value. For example: 1 2 3 4 5 6 7 # Starting with Open MPI v1.7, you must use "--level 9" to see # all the MCA parameters (the default is "--level 1"): shell$ ompi_info --param all all --level 9 # Before Open MPI v1.7, the "--level" command line options # did not exist; do not use it. shell$ ompi_info --param all all Shows all the MCA parameters for all components that ompi_info finds, whereas: 1 2 3 # All remaining examples assume Open MPI v1.7 or later (i.e., # they assume the use of the "--level" command line option) shell$ ompi_info --param btl all --level 9 Shows all the MCA parameters for all BTL components that ompi_info finds. Finally: 1 shell$ ompi_info --param btl tcp --level 9 Shows all the MCA parameters for the TCP BTL component. I'll try to get it finished soon. -- Jeff Squyres jsquy...@cisco.com<mailto:jsquy...@cisco.com> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
