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SIMD instructions with Rust on Android by Guillaume Endignoux - Rust Zürisee June 2023
Discover how to leverage SIMD instructions with Rust on Android devices, exploring the arch feature and rust-intrinsics libraries, and overcoming security and compatibility issues for improved performance and compatibility.
- The speaker’s experience using SIMD instructions with Rust on Android devices is presented.
- Direct usage of SIMD instructions is not allowed due to security and compatibility issues.
- The arch feature and rust-intrinsics libraries were used to enable SIMD instructions.
- Android’s NDK and Rust’s compiler require specific configurations.
- Intrinsics for SIMD are not inlined by default, which is a problem.
- Performance is improved by inlining functions.
- Tests and benchmarks should include real hardware to verify results.
- The speaker encountered difficulties in detecting supported features and calling them.
- He used a detector to identify features and annotated functions to enable SIMD.
- The arch feature and rust-intrinsics libraries are recommended for use.
- The speaker discussed potential issues with CPU compatibility and code optimization.
- Debugging and testing with real hardware is important.
- He used macros to generate functions for different platforms.
- He concluded that inlining is an essential optimization technique.
- SIMD instructions can be used to optimize algorithms, but there are limitations.