I'm new to using tbb::flow and was looking to create a graph that had a portion of it that is embarrassingly parallel. So the idea is to have a message come in to a node that does some pre-processing and then can formulate a set of tasks that can be executed in parallel. And then the data is aggreagated in a multifunction_node that sends the results out to a couple of places.
-------------- ------
|parallel nodes| |Output|
----------- /|--------------|\ ---------- / ------
msg -> |pre-process| -|parallel nodes|- |aggregator|
----------- \|--------------|/ ---------- \ ------
|parallel nodes| |Output|
-------------- ------
Now the aggregator can't send out it's work until the work is done. So it would need to keep track of the number of answers expected. Can I do this with a tbb::flow::graph or should I create a function node that has a parallel for embedded into it? Other ideas or options?
If I can do it with tbb::flow what are the node types and queueing strategies?
Another way of thinking about this is it is a MapReduce kind of operation with a little preprocessing and the results being sent to a few different places in slightly different forms.
