FPGAs for Software Programmers by Dirk Koch Frank Hannig & Daniel Ziener

Author:Dirk Koch, Frank Hannig & Daniel Ziener
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

8.3.5 Design Space Exploration

Design space exploration will be triggered at the code scope where the auto pragma is inserted. In the Merlin Compiler, the design space includes (1) the loop and data transformation options, and (2) the pipeline and parallel pragmas and their arguments. Exploring different design alternatives helps programmers find the best design point that achieves the highest performance at the lowest cost. However, manually exploring all these alternatives is very time-consuming. Thus, it is desirable to perform such a design space exploration by source-to-source automation at compile time.

The design space of module section and replication can be explored automatically using the techniques in [CHL+12] and [CHZ14]. Based on the research, each module has several design options with different trade-offs between performance and area utilization. And these modules can be further replicated for better performance. The system design space exploration problem is to find a proper design option and number of replications for each module so that the system performance can be maximized with the given resource (Fig. 8.19).

Fig. 8.19Framework for automated module selection and replication

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