?trbr2d
?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(to receive the incoming message into.lda,n)
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).