Send data to all workers or receive data sent to all workers
shared_data = labBroadcast(srcWkrIdx,data)
shared_data = labBroadcast(srcWkrIdx)
| The |
| The data being broadcast. This argument is required only for the worker that is broadcasting. The absence of this argument indicates that a worker is receiving. |
| The broadcast data as it is received on all other workers. |
shared_data = labBroadcast(srcWkrIdx,data)
sends the specified data to all executing workers. The data is
broadcast from the worker with labindex == srcWkrIdx,
and is received by all other workers.
shared_data = labBroadcast(srcWkrIdx)
receives on each executing worker the specified shared_data that
was sent from the worker whose labindex is
srcWkrIdx.
If labindex is not srcWkrIdx, then you do
not include the data argument. This indicates that the function
is to receive data, not broadcast it. The received data,
shared_data, is identical on all workers.
This function blocks execution until the worker’s involvement in the collective
broadcast operation is complete. Because some workers may complete their call to
labBroadcast before others have started, use labBarrier if you need to guarantee
that all workers are at the same point in a program.
In this case, the broadcaster is the worker whose labindex is
1.
srcWkrIdx = 1; if labindex == srcWkrIdx data = randn(10); shared_data = labBroadcast(srcWkrIdx,data); else shared_data = labBroadcast(srcWkrIdx); end