Hi, I have been trying to build R with optimized BLAS library.
I am using a Ubuntu 13.10 x86_64 desktop, on which I am able to build R with openblas without any problem: #BEGIN_SRC sh ./configure --enable-BLAS-shlib --enable-R-shlib LIBnn=lib --disable-nls --with-blas="-L/usr/lib/openblas-base/ -lopenblas" --enable-memory-profiling make sudo make install #END_SRC However, on redhat 5.9, I am not able to install openblas. Firstly, there is no pre-built package, even for later version of redhat. Secondly, I am not able to build openblas from source, actually not even able to install newer gcc from source. I then tried to install ATLAS on redhat and build R with it. -t 2: 2 threads #BEGIN_SRC sh ../configure --shared -t 2 -b 64 -D c -DPentiumCPS=1600 --with-netlib-lapack-tarfile=/path-to-lapack-3.4.2.tgz make build make check make ptcheck make time make install # R ../configure --enable-BLAS-shlib --enable-R-shlib --disable-nls --enable-memory-profiling --with-blas="-L/usr/local/atlas/lib -lptf77blas -lpthread -latlas" make sudo make install #END_SRC Installation is successful. However when I run the following code, only one thread is used. I have looked through lots of manuals and forums and couldn't find an answer. Please advise. Thanks a lot. -- Sincerely, Bowen ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
