ViperEkura
6f67ba8942
perf: move decode split partials to InferenceWorkspace
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- Replace per-.cu-file static cached tensors with workspace-managed pre-allocated buffers
- InferenceWorkspace now owns decode_o_part / decode_ml_part (mirrors FlashInfer's workspace pattern)
- KVCache carries the buffers through the backend -> C++ kernel chain
- C++ kernels accept optional pre-allocated buffers; fallback to alloc_split_partials for backward compat
- Pre-allocates once at Executor init, zero allocation in the decode hot loop
- Prerequisite for CUDA-graph capture (all kernel addresses are stable)
2026-08-06 19:12:09 +08:00
ViperEkura
41dcf0feb9
feat: SGLang-style paged attention kernels replace page-table path
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- PagedAttentionParams uses flat KV pool + req_to_token + kv_indptr/qo_indptr instead of page_table
- MMA split-KV decode and split-Q prefill kernels with indirect ragged-batch addressing
- Prefill kernel accepts 4D mask (causal-aware); decode kernel supports 2D mask
- CudaBackend is inference-only: kv_cache=None raises, no torch fallback
- benchmark.py: required --ckpt, --backend/--compare options
- Parallel build isolates build-temp/build-lib per subprocess
- Standalone test covers decode/prefill with mask, 27 cases pass
2026-08-01 15:41:25 +08:00
ViperEkura
7feeb0b93e
refactor: replace magic layout ints with TensorLayout enum
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- Add TensorLayout enum (C++ + Python) to replace magic layout ints
- Add C10_CUDA_CHECK post-launch error checking to all kernel entries
- Add CUDAGuard + freqs_cis shape validation to rotary_emb.cu
- Cache SM count to eliminate per-call cudaDeviceGetAttribute
- Add DISPATCH_CAUSAL_MASK macro to deduplicate dispatcher if/else
- Convert mask type hints from X|None to Optional[X]
2026-08-01 11:05:52 +08:00
ViperEkura
21bf37dd83
refactor: unify extension API to blhd layout and is_causal
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- Rename ops.py to attention_ops.py
- Remove layout/scale params: fixed blhd, auto scale
- Replace causal_offset with is_causal bool
- Move SDPA fallback to backend, ops only calls CUDA kernels
- Update __init__.py exports
2026-07-30 18:39:20 +08:00
ViperEkura