1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
pvm_bcast(1) Scilab function pvm_bcast(1)
NAME
pvm_bcast - broacasts a message to all members of a group
CALLING SEQUENCE
[info] = pvm_bcast(group, buff, msgtag)
PARAMETERS
group
: string, string group name of an existing group.
buff
: data to be send.
msgtag
: integer, message tag supplied by the user.
info
: integer,
DESCRIPTION
pvm_bcast broadcasts a message to all the members of group. In PVM 3.2 and
later the broadcast message is not sent back to the sender. Any PVM task
can call pvm_bcast(), it need not be a member of the group. The content of
the message can be distinguished by msgtag. If pvm_bcast is successful,
info will be 0. If some error occurs then info will be < 0.
pvm_bcast is asynchronous. Computation on the sending processor resumes as
soon as the message is safely on its way to the receiving processors. This
is in contrast to synchronous communication, during which computation on
the sending processor halts until a matching receive is executed by all the
receiving processors.
pvm_bcast first determines the tids of the group members by checking a
group data base. A multicast is performed to these tids. If the group is
changed during a broadcast the change will not be reflected in the broad-
cast. Multicasting is not supported by most multiprocessor vendors. Typi-
cally their native calls only support broadcasting to all the user's
processes on a multiprocessor. Because of this omission, pvm_bcast may not
be an efficient communication method on some multiprocessors.
EXAMPLE
info = pvm_bcast( "worker",[12+%i,4,5;3,4+%i,5],10)
SEE ALSO
pvm_joingroup
|
