Visible to Intel only — GUID: GUID-E523C816-D553-4D4E-8458-5404828CC07B
Visible to Intel only — GUID: GUID-E523C816-D553-4D4E-8458-5404828CC07B
pxerbla
Error handling routine called by ScaLAPACK routines.
Syntax
void pxerbla (MKL_INT* ictxt, char* srname, MKL_INT* info, MKL_INT srname_len);
Include Files
- mkl_scalapack.h
Input Parameters
- ictxt
-
(local)
MKL_INT*
The BLACS context handle, indicating the global context of the operation. The context itself is global.
- srname
-
(global)
char*
The name of the routine that called pxerbla.
- info
-
(global)
MKL_INT*
The position of the invalid parameter in the parameter list of the calling routine.
- srname_len
-
(global)
MKL_INT
The length of the calling routine name.
Description
This routine is an error handler for the ScaLAPACK routines. It is called if an input parameter has an invalid value. A message is printed and program execution continues. For ScaLAPACK driver and computational routines, a RETURN statement is issued following the call to pxerbla.
Control returns to the higher-level calling routine, and you can determine how the program should proceed. However, in the specialized low-level ScaLAPACK routines (auxiliary routines that are Level 2 equivalents of computational routines), the call to pxerbla() is immediately followed by a call to BLACS_ABORT() to terminate program execution since recovery from an error at this level in the computation is not possible.
It is always good practice to check for a non-zero value of info on return from a ScaLAPACK routine. Installers may consider modifying this routine in order to call system-specific exception-handling facilities.