On Jul 11, 2007, at 8:09 AM, Terry D. Dontje wrote:
Jeff Squyres wrote:
On Jul 10, 2007, at 1:26 PM, Ralph H Castain wrote:
2. It may be useful to have some high-level parameters to specify a
specific run-time environment, since ORTE has multiple, related
frameworks (e.g., RAS and PLS). E.g., "orte_base_launcher=tm", or
somesuch.
I was just writing this up in an enhancement ticket when the though
hit me: isn't this aggregate MCA parameters? I.e.:
mpirun --am tm ...
Specifically, we'll need to make a "tm" AMCA file (and whatever other
ones we want), but my point is: does AMCA already give us what we
want?
The above sounds like a possible solution as long as we are going to
deliver a set of such files and not require each site to create their
own. Also, can one pull in multiple AMCA files for one run thus
you can
specify a tm AMCA and possibly some other AMCA file that the user
may want?
Yep. You can put a ':' between different parameters. So:
shell$ mpirun -am tm:foo:bar ...
will pull in the three AMCA files 'tm' 'foo' 'bar' in that order of
precedence. Meaning that 'tm' can override a MCA parameter in 'foo',
and 'foo' can override a MCA parameter in 'bar'. And any '-mca'
command line options take a higher precedence than AMCA parameter
files, so could override MCA parameters set by any of 'tm' 'foo' or
'bar'.
I'll put it on my list to make a faq entry for AMCA usage, as I don't
see one.
-- Josh
--td
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Josh Hursey
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