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Subject: Re: [OMPI users] FCA collectives disabled by default
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-04-03 10:31:56


Looking at the source code, it is because those other collectives aren't implemented yet :-)

On Apr 2, 2013, at 12:07 PM, Brock Palen <brockp_at_[hidden]> wrote:

> We are starting to play with FCA on our Mellonox based IB fabric.
>
> I noticed from ompi_info that FCA support for a lot of collectives are disabled by default:
>
> Any idea why only barrier/bcast/reduce are on by default and all the more complex values are disabled?
>
> MCA coll: parameter "coll_fca_enable_barrier" (current value: <1>, data source: default value)
> MCA coll: parameter "coll_fca_enable_bcast" (current value: <1>, data source: default value)
> MCA coll: parameter "coll_fca_enable_reduce" (current value: <1>, data source: default value)
> MCA coll: parameter "coll_fca_enable_reduce_scatter" (current value: <0>, data source: default value)
> MCA coll: parameter "coll_fca_enable_allreduce" (current value: <1>, data source: default value)
> MCA coll: parameter "coll_fca_enable_allgather" (current value: <1>, data source: default value)
> MCA coll: parameter "coll_fca_enable_allgatherv" (current value: <1>, data source: default value)
> MCA coll: parameter "coll_fca_enable_gather" (current value: <0>, data source: default value)
> MCA coll: parameter "coll_fca_enable_gatherv" (current value: <0>, data source: default value)
> MCA coll: parameter "coll_fca_enable_alltoall" (current value: <0>, data source: default value)
> MCA coll: parameter "coll_fca_enable_alltoallv" (current value: <0>, data source: default value)
> MCA coll: parameter "coll_fca_enable_alltoallw" (current value: <0>, data source: default value)
>
> Brock Palen
> www.umich.edu/~brockp
> CAEN Advanced Computing
> brockp_at_[hidden]
> (734)936-1985
>
>
>
>
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