[Rd] code optimization,analysis

[Duncan Murdoch]

On 20/03/2008 7:03 AM, m jacobson wrote:
> Hi,
> 
> After having used S+ in commercial setting and then R
> in non-commerical (but still supporting my commercial
> interests), I would like to give back, if possible.
> 
> Where I can contribute:
> 1.  SCAN / PREVENT Stability and Threat analysis (big
> open source presence supported by coverity)
> 2.  Intel Threaded Building Blocks library support to
> leverage multicore CPUs (plan now for 8-way)
> 3.  VTune analysis/cache optimization for
> identification of loop unrolls, etc.
> 
> All this would be on linux (Fed8 at present), except I
> do have an Intel compiler on Win if it was needed,
> would need to find fortran compiler, make lots of
> adjustments, I suspect.
>  
> I've already started on #3 and would only take on #1
> if someone in the R project blessed, because David
> Miller at coverity likes to support the broader
> projects over lone-cowboy stuff.

You didn't mention this, but putting together (and maintaining) a tool 
chain for 64 bit Windows builds would be appreciated.

> P.S. What an easy build, as far as open src goes, your
> build person deserves credit.  I'm currently setting
> up to compare gcc to intel compiler on the R base and
> rerunning the timing benchmarks.

That's largely due to Brian Ripley's efforts, but there are many other 
contributors to it.

Duncan Murdoch