FPGA

Warning

Support for FPGAs has not yet been ported to CMake.

  • Use -D__PW_FPGA to enable FPGA support for PW (fft) calculations. Currently tested only for Intel Stratix 10 and Arria 10 GX1150 FPGAs.

  • Supports single precision and double precision fft calculations with the use of dedicated APIs.

  • Double precision is the default API chosen when set using the -D__PW_FPGA flag.

  • Single precision can be set using an additional -D__PW_FPGA_SP flag along with the -D__PW_FPGA flag.

  • Kernel code must be synthesized separately and copied to a specific location.

  • See https://github.com/pc2/fft3d-fpga/ for the kernel code and instructions for synthesis.

  • Read src/pw/fpga/README.md for information on the specific location to copy the binaries to.

  • Currently supported FFT3d sizes - 16^3, 32^3, 64^3.

  • Include aocl compile flags and -D__PW_FPGA -D__PW_FPGA_SP to CFLAGS, aocl linker flags to LDFLAGS and aocl libs to LIBS.

  • When building FPGA and OFFLOAD together then -D__NO_OFFLOAD_PW must be used.