Problem building R with Intel MKL v10 BLAS

Thanks for everyone's help.  Unfortunately, still no success.  So I took the 
alternate route suggested in section A.3.1.5 of R-admin, and just created a 
symbolic link from libRblas.so to .../libmkl_gf_lp64.so.  I can still 
multiply 2 matrices together in R, so it looks like this is working.  Can you 
propose any other test to be sure?

Should I make a similar link for LAPACK?

I'm still perplexed as to why configure couldn't find the MKL BLAS, but I 
suppose any solution that works is a good one.

Thanks again.

Michael




Hin-Tak Leung wrote:

This part "-lmkl_gf_lp64.so -lmkl_gnu_thread.so -lmkl_core.so"
looks wrong - it should be "-lmkl_gf_lp64 -lmkl_gnu_thread -lmkl_core"
without the ".so" part.

I don't know how BLAS_LIBS does it, but when I was linking against
mkl 9, all I did which different from the usual build (diff from the
two rpm spec file I wrote) was 3 changes:

export LDFLAGS=...  -L/opt/intel/mkl/9.1/lib/em64t/
export FFLAGS=... -ff2c
./configure ... --with-blas="-lmkl -lguide -lpthread"

The FFLAGS ezport was needed because of difference between g77 and 
gfortran.


Michael Braun wrote:

NO

Hi.  I'm not sure if this is an R-help or R-devel problem, so I'm 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.

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.

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

-- 
Michael Braun
Assistant Professor of Marketing
MIT Sloan School of Management
One Amherst St., E40-169
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USA

braunm at mit.edu
+1 (617) 253-3436