search for: dsyrk

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm trying to understand some C code in an R package I'm using. I'm address this question here as it's matrix algebra...and I'm no pro at that! the C command reads: double alpha = 1.0, beta = 0.0; dsyrk_("L", "N", nGenes, nGenes, & alpha, mat1, nGenes, & beta, mat2, nGenes); - From google, I've found out that dsyrk is for performing one of the symmetric rank k operations - whatever that means!? From here: http://linux.die.net/man/l/dsyrk I've found th...

...main" in file <no file> ld: Unsatisfied symbol "alloca" in file CHMfactor.o ld: Unsatisfied symbol "dpotrf" in file CHOLMOD.a[cholmod_l_super_numeric.o] ld: Unsatisfied symbol "zpotrf" in file CHOLMOD.a[cholmod_l_super_numeric.o] ld: Unsatisfied symbol "dsyrk" in file CHOLMOD.a[cholmod_l_super_numeric.o] ld: Unsatisfied symbol "dtrsm" in file CHOLMOD.a[cholmod_l_super_numeric.o] ld: Unsatisfied symbol "dtrsv" in file CHOLMOD.a[cholmod_l_super_solve.o] 14 errors. gmake[3]: *** [Matrix.sl] Error 1 gmake[3]: Leaving directory `/rnd...

The following is at least as much out of intellectual curiosity as for practical reasons. On reviewing some code written by novices to R, I came across: crossprod(x, y)[1,1] I thought, "That isn't a very S way of saying that, I wonder what the penalty is for using 'crossprod'." To my surprise the penalty was substantially negative. Handily the client had S-PLUS as

...main" in file <no file> ld: Unsatisfied symbol "alloca" in file CHMfactor.o ld: Unsatisfied symbol "dpotrf" in file CHOLMOD.a[cholmod_l_super_numeric.o] ld: Unsatisfied symbol "zpotrf" in file CHOLMOD.a[cholmod_l_super_numeric.o] ld: Unsatisfied symbol "dsyrk" in file CHOLMOD.a[cholmod_l_super_numeric.o] ld: Unsatisfied symbol "dtrsm" in file CHOLMOD.a[cholmod_l_super_numeric.o] ld: Unsatisfied symbol "dtrsv" in file CHOLMOD.a[cholmod_l_super_solve.o] 14 errors. gmake[3]: *** [Matrix.sl] Error 1 gmake[3]: Leaving directory `/rnd...

Dear all, I would like to submit an issue that we are facing. Indeed, in our environment, we are optimizing the R code to speed up some mathematical calculations as matrix products using the INTEL libraries ( MKL) ( https://software.intel.com/en-us/mkl ) With the last version of the MKL libraries Intel 2018, we are facing to an issue with *all INTERNAL command* that are executing in R.

...711-317 ERROR: Undefined symbol: dqrxb ld: 0711-317 ERROR: Undefined symbol: dsvdc ld: 0711-317 ERROR: Undefined symbol: dtrsl ld: 0711-317 ERROR: Undefined symbol: dtrco ld: 0711-317 ERROR: Undefined symbol: lminfl ld: 0711-317 ERROR: Undefined symbol: .zgemm ld: 0711-317 ERROR: Undefined symbol: .dsyrk ld: 0711-317 ERROR: Undefined symbol: .dtrsm ld: 0711-317 ERROR: Undefined symbol: .dcopy ld: 0711-317 ERROR: Undefined symbol: .dtrsl ld: 0711-317 ERROR: Undefined symbol: .ddot ld: 0711-317 ERROR: Undefined symbol: .dnrm2 ld: 0711-317 ERROR: Undefined symbol: .dscal ld: 0711-317 ERROR: Undefined...