VectorWare Dispatches

August 10, 2026 12 min read

Pedantic mode: Off

GPU code can now use Rust's portable SIMD. We share the implementation approach and what this unlocks for GPU programming.

At VectorWare , we are building the first GPU-native software company . Today, we are excited to announce that we can successfully use Rust's portable SIMD ( core::simd ) on the GPU. This milestone marks a significant step towards our vision of enabling developers to write complex, high-performance applications that leverage the full power of GPU hardware using familiar Rust abstractions.

Parallelism below the thread

When we brought Rust threads to the GPU , we mapped each std::thread to a GPU warp . This let us run many concurrent threads on the GPU but did not use the parallel lanes within each thread/warp.

On the CPU, the abstraction for parallelism within a thread is SIMD .…