Programming FPGAs with OpenCL is now becoming mainstream. However, there are no benchmarks for evaluating these compilers. CHO is an attempt at providing some sort of "standard" benchmark suite.

CHO is a suite of benchmark applications for OpenCL FPGA platforms. We started off by porting CHStone to OpenCL. We will be adding more applications with time. This paper (CHO: A Benchmark Suite for OpenCL-based FPGA Accelerators) is a good introduction/refresher on FPGAs, OpenCL or High-level Synthesis.

• CHO: Towards a Benchmark Suite for OpenCL FPGA Accelerators.
  Geoffrey Ndu, Javier Navaridas, Mikel Lujan.
  3rd International Workshop on OpenCL, 12 - 13 May 2015.
• CHO: A Benchmark Suite for OpenCL-based FPGA Accelerators.
  Geoffrey Ndu, Mikel Lujan, Javier Navaridas.
  University Manchester Technical Report UNIMAN-COMP-APT-TR-02-05-2014, May 2, 2014.