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This repository contains a set of C++ classes that can be used to implement inline caches for the input and output global array arguments (i.e. those mapped to external DRAM) of accelerators implemented on FPGAs via high-level synthesis.

The caches, their usage and the corresponding results have been published in the following paper. If you find this work useful for your research, please consider citing:

@ARTICLE{8030985, 
 author={L. Ma and L. Lavagno and M. T. Lazarescu and A. Arif}, 
 journal={IEEE Access}, 
 title={Acceleration by Inline Cache for Memory-Intensive Algorithms on FPGA via High-Level Synthesis}, 
 year={2017}, 
 volume={5}, 
 pages={18953-18974}, 
 doi={10.1109/ACCESS.2017.2750923}, }

Main sub-directories:

• cache: header files declaring and defining the cache classes and their operators and methods.
• bitonic_sort, lucas_kanade, matrix_mul, smith_wat: a set of applications (described in the paper above) that demostrate the use of the caches. Each directory contains:
  • the source code for the application,
  • three sub-directories with the Makefiles for sdaccel that enable the compilation, synthesis and simulation of each application with three different memory architectures (as discussed in the paper):
    • global_mem: arrays are directly mapped to global memory without cache (worst performance, best resource usage).
    • local_mem: arrays are mapped to on-chip memory (unrealistic, since on-chip memory is not large enough; best performance, worst resource usage).
    • cache_mem: arrays are mapped to global memory and use our caches (good performance, good resource usage).
• common: some utility include files.