CBLAS error handler

jeff_c71 — Tue, 17 Apr 2012 23:19:46 GMT

I've been trying to override error handling for CBLAS calls, but can't seem to find any instructions on this. The best I've been able to find is this post:
http://software.intel.com/en-us/forums/showthread.php?t=64051

Defining XERBLA does override the error handler for standard BLAS calls (ie. dgemm, etc.). However, defining cblas_xerbla has no effect. When I call, for instance, cblas_dgemm with bad parameters I just get the generic "Parameter x was incorrect on entry to cblas_gemm" error message.

Does anyone know of a way to define a custom error handler for CBLAS functions? Any help would be greatly appreciated.

CBLAS error handler

Alexander_K_Intel3 — Fri, 20 Apr 2012 07:34:47 GMT

Hi,

Thisway it works at my side:

Example source:
[cpp]#include void cblas_xerbla(char *str, int n) { printf( "MY_XERBLA: %s detected error in parameter %dn", str, n ); } int main() { double a=1.; MKL_INT n=1, bad=-1; CBLAS_ORDER order=CblasRowMajor; CBLAS_TRANSPOSE trans=CblasNoTrans; cblas_dgemm( order, trans, trans, n, n, n, a, &a, bad, &a, n, a, &a, n );
return 0; }
}

[/cpp]

Compilation:
Linux ia32:
icc *.c -I$MKLROOT/include -L$MKLROOT/lib/ia32 \
-Wl,--start-group \
$MKLROOT/lib/ia32/libmkl_intel.a \
$MKLROOT/lib/ia32/libmkl_intel_thread.a \
$MKLROOT/lib/ia32/libmkl_core.a \
-Wl,--end-group -openmp -lpthread

Windows intel64:
set LIB=%LIB%;%MKLROOT%\lib\intel64
icl *.c -F640000000 -I%MKLROOT%\include mkl_intel_lp64.lib mkl_intel_thread.lib mkl_core.lib /Qopenmp

W.B.R.,
Alexander

topic CBLAS error handler in Intel® oneAPI Math Kernel Library

CBLAS error handler

CBLAS error handler