[Rd] Dynamic Library linked with Parallel Intel MKL
Hi! I call some external C++ code from R using dyn.load() and .C(). My dynamic library is linked to the parallel Intel MKL libraries and thus should make use of my quadcore processor. In fact, it does if I call it from a C++ program but not if I call it from R 2.8.1 packaged by Ubuntu (there it only uses one core). Is there some trick? Do I need to link the whole of R with parallel MKL? Thanks a lot, Markus. -- View this message in context: http://www.nabble.com/Dynamic-Library-linked-with-Parallel-Intel-MKL-tp24053462p24053462.html Sent from the R devel mailing list archive at Nabble.com. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Building a package with BLAS under Windows
Hi everybody: I am writing a package that includes C code that uses the BLAS library. My Makevars looks like PKG_LIBS = $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS). If I check and build the package under Linux on my own computer everything works fine. However, if I submit the package to win-builder I get the following error messages: g++ -shared -s -o bzipl.dll tmp.def ars.o bzipl.o cvm_arrays.o cvm_axpym.o cvm_cmatrix.o cvm_cmexp.o cvm_cmplx.o cvm_copym.o cvm_cpoly.o cvm_cvector.o cvm_dmexp.o cvm_dpoly.o cvm_globals.o cvm_icamax.o cvm_icamin.o cvm_idamax.o cvm_idamin.o cvm_infnm.o cvm_isamax.o cvm_isamin.o cvm_izamax.o cvm_izamin.o cvm_npoly.o cvm_rmatrix.o cvm_rvector.o cvm_scalm.o cvm_scmatrix.o cvm_smexp.o cvm_spoly.o cvm_srmatrix.o cvm_utils.o cvm_zmexp.o cvm_zpoly.o -Ld:/Rcompile/recent/R-29~1.1/bin -lRlapack -Ld:/Rcompile/recent/R-29~1.1/bin -lRblas -lgfortran -lgfortran -Ld:/Rcompile/recent/R-29~1.1/bin -lR cvm_arrays.o:cvm_arrays.cpp:(.text+0xf2): undefined reference to `sscal_' cvm_arrays.o:cvm_arrays.cpp:(.text+0x1e2): undefined reference to `cscal_' cvm_arrays.o:cvm_arrays.cpp:(.text+0x252): undefined reference to `csscal_' cvm_arrays.o:cvm_arrays.cpp:(.text+0x32a): undefined reference to `caxpy_' cvm_arrays.o:cvm_arrays.cpp:(.text+0x421): undefined reference to `saxpy_' ... To me it looks like somehow the BLAS routines are not called correctly under Windows. I would be very grateful if anybody could help me. Thanks a lot, Markus. -- View this message in context: http://www.nabble.com/Building-a-package-with-BLAS-under-Windows-tp24590763p24590763.html Sent from the R devel mailing list archive at Nabble.com. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] matrix algebra in c
> 1. use F77_CALL() to call matrix multiplication functions from blas. > This should be ok as long as I remember that c and FORTRAN store > matrices differently. Concerning 1. you might want to look at some C++ wrapper for BLAS and Lapack like http://flens.sourceforge.net, this makes things easier. -- View this message in context: http://www.nabble.com/matrix-algebra-in-c-tp24484891p24604315.html Sent from the R devel mailing list archive at Nabble.com. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] Building a package with BLAS under Windows
Solved it myself: The single precision and complex BLAS routines were not installed. -- View this message in context: http://www.nabble.com/Building-a-package-with-BLAS-under-Windows-tp24590763p24633850.html Sent from the R devel mailing list archive at Nabble.com. __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
