Developer Reference

Contents

blacs_pcoord

Returns the row and column coordinates in the process grid.

Syntax

call blacs_pcoord
(
icontxt
,
pnum
,
prow
,
pcol
)
Input Parameters
icontxt
INTEGER
. Integer handle that indicates the context.
pnum
INTEGER
. Process number the coordinates of which are to be determined. This parameter stand for the process number of the underlying machine, that is, it is a
tid
for PVM.
Output Parameters
prow
INTEGER
. Row coordinates of the
pnum
process in the BLACS grid.
pcol
INTEGER
. Column coordinates of the
pnum
process in the BLACS grid.
Description
Given the system process number, this function returns the row and column coordinates in the BLACS process grid.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.