I mentioned in class, and I want to mention again, that this diagram was meant to assist discussion of general process of creating a performance parallel program. I urge you to not rack your brain trying to establish a precise definition of terms like decomposition, assignment, orchestration, and mapping. There is no one set sequence of steps for creating a parallel program, and decisions made in one phase of this diagram are highly related to decisions in other phases. For example, you might choose a particular assignment because it makes orchestration easier or decreases overheads of communication.
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dtaveras
Decomposition- how do you divide you workload, down to what granularity do you decompose the workload. One might choose a method of decomposition while taking into account assignment, mapping, orchestration and maybe mapping.
Assignment- In the case on the slide above we see the work being distributed among parallel threads but depending on the API or Abstraction/Programming model you are working with what work is assignment to what programming construct will vary.
Orchestration- How is Synchronization and communication done in order to ensure program correctness.
Mapping- Typically done by the device being programmed, mapping is somewhat predictable as it corresponds to the Programming semantics available.
I mentioned in class, and I want to mention again, that this diagram was meant to assist discussion of general process of creating a performance parallel program. I urge you to not rack your brain trying to establish a precise definition of terms like decomposition, assignment, orchestration, and mapping. There is no one set sequence of steps for creating a parallel program, and decisions made in one phase of this diagram are highly related to decisions in other phases. For example, you might choose a particular assignment because it makes orchestration easier or decreases overheads of communication.
This comment was marked helpful 0 times.
Decomposition- how do you divide you workload, down to what granularity do you decompose the workload. One might choose a method of decomposition while taking into account assignment, mapping, orchestration and maybe mapping.
Assignment- In the case on the slide above we see the work being distributed among parallel threads but depending on the API or Abstraction/Programming model you are working with what work is assignment to what programming construct will vary.
Orchestration- How is Synchronization and communication done in order to ensure program correctness.
Mapping- Typically done by the device being programmed, mapping is somewhat predictable as it corresponds to the Programming semantics available.
This comment was marked helpful 0 times.