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Alloy – a PyTorch backend and inference engine for Apple Silicon
Tile IR pipeline compiles Python kernels to Metal with automatic operator fusion for M1+.
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rayanht
2029d ago
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GitHub Repository
14 starsRust
IEEE-754-Conformant FP64 on Metal (Apple Silicon)
by guyfischman·May 8, 2026·1 point·1 comment
AI Analysis
●●●BangerWizardryNiche Gem
Bit-exact f64 emulation on Metal GPUs where Apple's native double support is missing.
Strengths
- •Pure integer operations on bit patterns enable deterministic math on GPUs lacking f64.
- •Includes unpacked path for tight inner loops skipping special-case dispatch overhead.
- •Rust reference implementation ensures bit-exact verification between GPU and CPU.
Weaknesses
- •Extremely niche audience limited to those needing precise float math on Metal specifically.
- •Performance overhead compared to native f32 operations may limit real-time use cases.
Category
Target Audience
Graphics programmers and simulation engineers on Apple Silicon
Similar To
SoftFloat · Cuda Softfloat
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