Developer Reference

Contents

?gebr2d

Receives and participates in a broadcast along a scope for a general rectangular matrix.

Syntax

call igebr2d
(
icontxt
,
scope
,
top
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
call sgebr2d
(
icontxt
,
scope
,
top
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
call dgebr2d
(
icontxt
,
scope
,
top
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
call cgebr2d
(
icontxt
,
scope
,
top
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
call zgebr2d
(
icontxt
,
scope
,
top
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
Input Parameters
icontxt
INTEGER
. Integer handle that indicates the context.
scope
CHARACTER*1
. Indicates what scope the broadcast should proceed on. Limited to 'Row', 'Column', or 'All'.
top
CHARACTER*1
. Indicates the communication pattern to use for the broadcast.
m
,
n
,
lda
Describe the matrix to be sent. See Matrix Shapes for details.
rsrc
INTEGER
.
The process row coordinate of the process that called broadcast/send.
csrc
INTEGER
.
The process column coordinate of the process that called broadcast/send.
Output Parameters
a
An array of dimension
(
lda
,
n
)
to receive the incoming message into.
Description
This routine receives and participates in a broadcast along a scope. At the end of a broadcast, all processes within the scope will possess the data in the general rectangular matrix
A
. Broadcasts may be globally-blocking. This means no process is guaranteed to return from a broadcast until all processes in the scope have called the appropriate routine (broadcast/send or broadcast/receive).

Product and Performance Information

1

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