Developer Reference

Contents

?trbr2d

Receives and participates in a broadcast along a scope for a trapezoidal matrix.

Syntax

call itrbr2d
(
icontxt
,
scope
,
top
,
uplo
,
diag
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
call strbr2d
(
icontxt
,
scope
,
top
,
uplo
,
diag
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
call dtrbr2d
(
icontxt
,
scope
,
top
,
uplo
,
diag
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
call ctrbr2d
(
icontxt
,
scope
,
top
,
uplo
,
diag
,
m
,
n
,
a
,
lda
,
rsrc
,
csrc
)
call ztrbr2d
(
icontxt
,
scope
,
top
,
uplo
,
diag
,
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.
uplo
,
diag
,
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 trapezoidal 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

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