Hi, I checked config.log and BLAS_LIBS was not set. However, I have set BLAS_LIBS='-L/usr/lib64 -lblas' in config.site file. I can't figure out why BLAS_LIBS is not set, when PGI compiler is used. When gcc is used, BLAS_LIBS need not be set in config.site and automatically get picked up by the configuration script.
Here is a snapshot of the configuration script output (for buidling R with PGI compiler): checking for complex.h... yes checking for double complex... no checking for sgemm_ in -L/usr/lib64 -lblas... yes checking whether double complex BLAS can be used... no Is there other thing I should look into in the config.log? Your help is very much appreicated. Thanks, Jennifer Prof Brian Ripley wrote: >On Sat, 24 Sep 2005, Jennifer Lai wrote: > > > >>Hi, >> How does complex.h used in R? Whether a compiler support complex.h >>or not, does it affect R's performance? >> >> > >complex.h will only used in future (2.2.0-to-be) versions of R, and only >if configure finds enough C99 support. Otherwise R's own C-level complex >support is used, as it always was. One would expect the OS's support to >be faster and more accurate (but one could be disappointed, we have >found). > > > >>I used PGI compiler to build >>R-devel on AMD Opteron, but the configuration file failed to link BLAS >>library despite the fact it is located in the usual location, >>/usr/lib64. >> >> > >Look in config.log to find out why. > > > >>PGI said they don't support complex.h. R configuration >>script printed out that doublecomplex is not supported. >> >> > >That is *FORTRAN* DOUBLE COMPLEX, and that does affect the operation of R, >as without it you will not have complex linear algebra support. > > > >>Are "supporting >>complex.h" and "linking BLAS library" related? >> >> > >No. They are completely orthoogonal concepts. > > > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
