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README.md

miniBUDE OpenMP Target

This is a GPU implementation of miniBUDE using OpenMP target.

Building

make

This implementations supports the following compilers:

  • Cray
  • LLVM 10+ (built with offloading support)

The default compiler and flags can be overridden using CC and CFLAGS, respectively.

Target Architecture

By default, the NVIDIA V100 is targetted, but this can be changed by setting the ARCH parameter to the name of the target GPU architecture.

For example, to target a P100:

make ARCH=sm_60

This implementation has a tuning parameter that can be used to change the amount of work given to each GPU thread: TD_PER_THREAD. Optimal values are automatically set for Pascal (2) and Volta (4), but on other platforms this may need setting manually:

make ARCH=... TD_PER_THREAD=8

Running

This implementation has no special run-time options. The -n and -i parameters are available. Run bude -h for a help message.