~/talk

Unleashing ML Processing Power Through RISC-V Vectors: Applications, Implementation and...

Talkat RISC-V Summit North America 2025 · 2025-10-22..10-23· [machine-learning]
name:B. Barker
links:none on file
slides:none on file

RISC-V Vector means big state and tricky verification: 32 vector registers, 7 CSRs and ~200 instructions and algorithmic scaling where VLmax scales across architectures so the same code handles 16 elements on VL=128 or 256 elements on VL=2048. Implementation forces SIMD lanes, mask-as-register duality, and load/store coherency headaches. Verification uses a graph-based cover-point generation that expands dimensions into paths and drives constrained stimulus and memories. An assembly test case runs with two software threads plus one hardware thread and emits pass/fail logs.

AI-written summary · about

  1. 0:00Introduction to RISC-V vectors
  2. 1:02Why SIMD matters for ML
  3. 2:04RISC-V vector basics
  4. 3:27Algorithmic scalability in vectors
  5. 4:11Vector load/store complexities
  6. 7:20Verification challenges with vectors
  7. 8:44Implementation features overview
  8. 10:53Coverage-driven verification approach
  9. 11:57Example test case demonstration
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