Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 0.9
  • 09/09/2020
  • Public Content
Contents

blacs_gridinfo

Returns information on the current grid.

Syntax

call blacs_gridinfo
(
icontxt
,
nprow
,
npcol
,
myprow
,
mypcol
)
Input Parameters
icontxt
INTEGER
. Integer handle that indicates the context.
Output Parameters
nprow
INTEGER
. Number of process rows in the current process grid.
npcol
INTEGER
. Number of process columns in the current process grid.
myprow
INTEGER
. Row coordinate of the calling process in the process grid.
mypcol
INTEGER
. Column coordinate of the calling process in the process grid.
Description
This routine returns information on the current grid. If the context handle does not point at a valid context, all quantities are returned as -1.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804