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Fundamental GPU Support

Merged Fundamental GPU Support
fhennig/sycl into backend-rework
Merged Frederik Hennig requested to merge fhennig/sycl into backend-rework

This MR introduces the fundamentals of GPU support to the new backend

General

  • Introduce GenericGpu platform and threads range export: GPU platforms communicate the kernel's required thread grid size to the outside via a GpuThreadsRange object separate from the AST
  • Add configuration options relating to GPUs

CUDA Platform

  • Introduce CUDA platform
  • Add materialization + guards for full and sparse iteration spaces
  • Add materialization of math functions

SYCL Platform

  • Introduce SYCL platform
  • Add materialization + guards for full and sparse iteration spaces
  • Add materialization of math functions

CUDA Just-In-Time Compiler

  • Migrate implementation of cupy-based JIT to new backend as an object-oriented structure

Deviations and Missing Features

In the new implementation, block size selection is entirely up to the JIT / the runtime system and no longer affects the backend. Adaptive block sizes, register restrictions, etc. are not yet implemented by this MR.

Edited by Frederik Hennig

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