update vllm kernel benchmark scripts - #562
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Signed-off-by: jundu <jun.du@intel.com>
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Pull request overview
Updates the benchmark configuration generator for CUTLASS FlashAttention decode performance so trend analysis can be run over a more structured, uniform KV-length sweep across representative decode shapes.
Changes:
- Replaces the previous ad-hoc
seq_lenslist with a uniform KV-length sweep (kv_len_sweep) across multiple batch sizes. - Introduces a curated set of decode shapes (hardcoded + derived from
model_lists) and filters configs to fit a KV-cache memory budget. - Makes config generation deterministic by de-duplicating via sets and sorting by
(num_heads, head_size, block_size, batch, kv_len).
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| # Size the pool so no block is aliased within the batch, | ||
| # otherwise KV reads hit cache and inflate bandwidth. | ||
| blocks_per_seq = (kv_len + block_size - 1) // block_size |
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Update the FA decode test scope for trend analysis