Rake

Rake is a programming language and compiler for writing data-parallel kernels that target multiple CPU SIMD vector widths from a single source. It solves the problem of maintaining separate vectorized code for different CPU architectures by compiling the same kernel to native code for each target, with a guarantee that every vector value stays in a single SIMD register or compilation fails. It is aimed at software developers and engineering teams working on performance-critical compute workloads, particularly those using structure-of-arrays data layouts. The tool is delivered as an open-source compiler and language, with a focus on explicit machine-code guarantees and a compile-time choice of vector width.

Key features

• Single kernel for multiple SIMD widths
• Compile-time target selection
• Guaranteed register-resident vectors
• No silent scalar fallback
• No hidden calls or spills
• Explicit widen for narrow columns
• Structure-of-arrays columnar schema