topic Re: Using BLACS and ScaLAPACK in c language in Intel® oneAPI Math Kernel Library

Using BLACS and ScaLAPACK in c language

phaser75 — Wed, 07 Oct 2009 11:39:20 GMT

I want to use BLACS(not BLAS) and ScaLapack. Since BLACS routines (blacs_pinfo, blacs_gridinit etc.) are Fortran routine, I made my code using mixed-language support. But it doesn't work.

If I want to use them in c language, which library or include files are needed?

I already linked-lmkl_blacs_intelmpi_ilp64 and added #include "mkl.h" in my c code.

Re: Using BLACS and ScaLAPACK in c language

TimP — Wed, 07 Oct 2009 12:52:52 GMT

Why not try the link advisor tool on the header page of this forum?

Re: Using BLACS and ScaLAPACK in c language

sozmenproyatech_com — Mon, 19 Oct 2009 18:04:53 GMT

Quoting - phaser75

I want to use BLACS(not BLAS) and ScaLapack. Since BLACS routines (blacs_pinfo, blacs_gridinit etc.) are Fortran routine, I made my code using mixed-language support. But it doesn't work.
If I want to use them in c language, which library or include files are needed?

I already linked-lmkl_blacs_intelmpi_ilp64 and added #include "mkl.h" in my c code.

Hi,

first of all, get the list of required libraries from link advisor tool which is located in this forum..
then include mkl_scalapack.h file to get the function prototypes...

and one more thing..for the BLACS funtions like (blacs_pinfo, etc.) use the following scheme of prototypes;

void Cblacs_get (int context, int request, int* value);
void Cblacs_gridinfo (int context, int* np_row, int* np_col, int* my_row, int* my_col);

This way I can call BLACS functions from my c code..

Actually, I dont use mkl_scalapack.h file and define my own declarations as I said above....It is your choice..