Github user dlwh commented on the pull request:

    https://github.com/apache/incubator-spark/pull/575#issuecomment-35105330
  
    Just to follow up on Breeze performance: in the latest snapshot, we are
    consistently faster than JBlas and Mahout in @mengxr's benchmarks.
    
    
    On Fri, Feb 14, 2014 at 1:54 AM, MLnick <notificati...@github.com> wrote:
    
    > I for one would prefer to use netlib-java, whether it is via MTJ or 
Breeze.
    > I've used both and find the MTJ API pretty good and with good sparse
    > support (though this was a few years ago admittedly). Breeze has a nicer
    > more "Matlab" DSL but as I mentioned there's no reason not to wrap MTJ in 
a
    > lighter-weight DSL that is not heavy on implicits, if for performance
    > reasons it is desirable.
    >
    >
    > On Fri, Feb 14, 2014 at 11:37 AM, Sam Halliday <notificati...@github.com
    > >wrote:
    >
    > > @MLnick <https://github.com/MLnick> I have it on good authority (from
    > the
    >
    > > author of JBLAS) that he consider netlib-java to exceed his original
    > > goals for JBLAS. I am utterly confused why commons-math would accept
    > JBLAS
    > > but reject netlib-java as a backend, given that JBLAS doesn't even have 
a
    > > java backend and they were concerned that the netlib-java java backend
    > > could not be compiled without classfile manipulation.
    > >
    > > I'll hold fire on the license request until you decide based on 
technical
    > > merit. I don't anticipate any problems: in fact I believe he would be
    > > delighted that MTJ is continuing.
    > >
    > > --
    > > Reply to this email directly or view it on GitHub<
    > https://github.com/apache/incubator-spark/pull/575#issuecomment-35069073>
    >
    > > .
    > >
    >
    > —
    > Reply to this email directly or view it on 
GitHub<https://github.com/apache/incubator-spark/pull/575#issuecomment-35070192>
    > .
    >

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