On Thu, 24 Jan 2008, Michael Braun wrote: > NO > > Hi. I'm not sure if this is an R-help or R-devel problem, so I'm
Definitely R-devel. > starting here in the hope that someone can help (and willing to go to > the other list if it's more appropriate). I think I am following all of > the instructions in the various manuals, but clearly I am missing something. > > I have an Intel EM64T Dell with 2 dual-core Xeon processors running Red > Hat EL5. I would like to build R 2.6.1 with lots of debugging and > profiling options, and link it to the processor-specific Intel MKL blas. > The problem is that after I compile R, and do R CMD config BLAS_LIBS, > the response is > -L/usr/local/lib64/R/lib -lRblas. > > This tells me that R is not linked to the Intel BLAS at all. Not so, because Rblas contains any links to an external BLAS. Check over the R-admin manual and note that --enable-BLAS-shlib is the default. So you need to check ldd /usr/local/lib64/R/lib/libRblas.so to see if it linked to MKL. Check over config.log to see what happened: a common problem is that the libraries are not known to ld.so (you may need to include /opt/intel/mkl/10.0.1.014/lib/em64t in LD_LIBRARY_PATH) > My config.site file for R is: > > #! /bin/sh > > R_PAPERSIZE=letter > CFLAGS="-g -O2 -p -pg" > CPPFLAGS="-I/opt/intel/mkl/10.0.1.014/include -I/usr/include > -I/usr/local/include" > LIBnn=lib64 > BLAS_LIBS="-L/opt/intel/mkl/10.0.1.014/lib/em64t -Wl,--start-group > -lmkl_gf_lp64.so -lmkl_gnu_thread.so -lmkl_core.so -l -l -l -Wl, > --end-group -lguide -lpthread -lm" > > I have set the CONFIG_SITE environment variable to the location of the > config.site.file. > I am doing everything as superuser. What compilers are you using? That would appear to be using gcc/gfortran and not the Intel compilers. > > The command I am using for configure is > > ./configure --disable-R-profiling --with-blas=no > > following the instructions in the R-admin file regarding enabling > C-level profiling and linking to the external BLAS libraries referenced > in the config.site file. > > The BLAS_LIBS files are different than in the R-admin manual because of > changes in the Intel MKL for version 10. These libraries, in this > order, were taken from the Intel MKL for Linux User's Guide, chapter 5. > > So, still no luck linking to the optimized BLAS. I'd appreciate any > suggestions. > > Thanks, > > Michael > > > > > > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
