Send data to all workers or receive data sent to all workers
shared_data = labBroadcast(srcWkrIdx,data)
shared_data = labBroadcast(srcWkrIdx)
The labindex of the worker sending the broadcast.
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.
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