Ralph,This problem was fixed long ago by some of the work Camille did. The exact revision number is r15402 (https://svn.open-mpi.org/trac/ompi/changeset/15402 ). I'm using this feature daily and so far I had any problems with it.
To reuse your example here is what Camille came up with. $ mpiexec --mca routed_base_verbose 30 -n 3 hostname [dancer:09638] mca: base: components_open: Looking for routed components [dancer:09638] mca: base: components_open: opening routed components[dancer:09638] mca: base: components_open: found loaded component binomial [dancer:09638] mca: base: components_open: component binomial has no register function [dancer:09638] mca: base: components_open: component binomial has no open function
[dancer:09638] mca: base: components_open: found loaded component direct[dancer:09638] mca: base: components_open: component direct has no register function [dancer:09638] mca: base: components_open: component direct has no open function
[dancer:09638] mca: base: components_open: found loaded component linear[dancer:09638] mca: base: components_open: component linear has no register function [dancer:09638] mca: base: components_open: component linear has no open function
[dancer:09638] mca:base:select: Auto-selecting routed components [...] And if we force a special component: $ mpiexec --mca routed linear --mca routed_base_verbose 30 -n 3 hostname [dancer:09642] mca: base: components_open: Looking for routed components [dancer:09642] mca: base: components_open: opening routed components [dancer:09642] mca: base: components_open: found loaded component linear[dancer:09642] mca: base: components_open: component linear has no register function [dancer:09642] mca: base: components_open: component linear has no open function
[dancer:09642] mca:base:select: Auto-selecting routed components [...] I wonder what are the configuration options you're using? george. On Oct 22, 2008, at 1:30 PM, Ralph Castain wrote:
I've been digging a little into optimization and found something that seems counterintuitive in the way OMPI is handling components. Specifically, if I specify a component I want used for a framework, OMPI still does a component load and open on every component in the framework - it only uses my specification during "select".Thus, the cmd line mpirun -mca routed linearstill results in the loading and opening of the direct and binomial components - even though we have directed the framework not to use them.This causes us to waste memory when there is no possibility of a different component being selected. Is there a reason why "open" isn't using the mca params to guide the components it is loading?Ralph _______________________________________________ devel mailing list de...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/devel
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