Hi,
for diagnostic purposes, I would like to get information about
the BLAS / LAPACK linked against R from within an R-session.
An obvious application could be safety-checks for packages like
Matrix and quantreg at load / attach - time.
Also you could be more precise on the "framework" in which R
is running for comparable benchmark timings on different systems.
Perhaps this information may even be included into the output
of R.Version() :-) ?
So my question:
Is this possible/reasonable at all?
My impression is that it is not trivial, as you may ---at least
on Win32--- even replace the standard Rblas.dll by some of the
"better" Rblas.dll 's available on
http://cran.at.r-project.org/bin/windows/contrib/ATLAS/
without telling R in any way before launching R.
In the (Win32) case I imagine you could read out the
StringFileInfo
of the Rblas.dll being used --- which, for the time
being, however, does not yet contain information on
the BLAS version. But a (mid term) solution could be:
(1) For building Rblas.dll from source, extend
src/gnuwin/dllversion.rc
from the standard R tar-ball to a new ressource file, say,
src/gnuwin/blasdllversion.rc
including version information on BLAS/LAPACK which is then
used for building Rblas.dll.
(2) Successively replace files from
http://cran.at.r-project.org/bin/windows/contrib/ATLAS/
by ones built against blasdllversion.rc
Unfortunately, I have no idea whether/how you could use information
similar to StringFileInfo in other OS's ...
Any suggestions appreciated.
Best,
Peter Ruckdeschel
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