[R-sig-hpc] Parallel linear model

[M. Edward (Ed) Borasky]

Right - DTrace isn't on Linux (licensing problem) but is on Solaris,
xBSD and MacOS X. On Linux, there's a similar tool called Systemtap
but I've never needed it - sysstat, oprofile and blktrace always were
enough.

On Fri, Aug 24, 2012 at 12:12 AM, Olaf Mersmann <olafm at p-value.net> wrote:
> Hi,
>
> "M. Edward (Ed) Borasky" <znmeb at znmeb.net> writes:
>> If you're on Linux on bare metal, you can do all sorts of nifty
>> micro-benchmarking via Sysstat, Oprofile and Blktrace. It's been a few
>> years since I did any of this, but I probably still have some
>> hacked-up scripts on Github for Oprofile (CPU bottlenecks), Blktrace
>> (disk bottlenecks) and Sysstat (telling which one you have).
>
> a few years back I added DTrace probes to R as a fun experiment. They
> allowed me to see exactly when I entered/exited a function and when
> memory was allocated and collected (see [1]). This of course requires a
> system with DTrace (OSX, FreeBSD or Solaris afaik). I have not updated
> the patches in a while since there seemed to be little/no interest in
> them. If there is interest I might be able to salvage them and provide a
> patch against a current R version.
>
> Cheers,
> Olaf
>
> [1] http://r.789695.n4.nabble.com/DTrace-probes-for-R-td920997.html



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