Executors

Ginkgo’s executors abstract the hardware that a LinOp runs on. Every data object (matrix, vector, factorisation, solver) carries a shared pointer to an Executor; every kernel dispatches through it; copies between executors are explicit. The six classes here cover the five supported backends plus the abstract base.

For background on the executor model — when each backend is appropriate, how cross-executor copies work, allocator choices — see the Executor model concept page.

Abstract base

• Executor — abstract base; the interface every concrete executor implements.

Concrete backends

• ReferenceExecutor — single-threaded host execution. The correctness baseline used by Ginkgo’s own tests.

• OmpExecutor — multi-threaded CPU via OpenMP.

• CudaExecutor — NVIDIA GPUs via CUDA.

• HipExecutor — AMD GPUs via ROCm/HIP.

• DpcppExecutor — Intel GPUs (and CPUs) via SYCL / DPC++.