Gahow Wang 9835d6af5d Elastic PS eval: near-neutral, offload gate triggers only 14% of HEAVY ...

Root cause: 75% of HEAVY requests are cold (cache_ratio=0%), failing the
cache_ratio>=0.3 gate. Only 17/118 HEAVY offloaded, insufficient to reduce
prefill-decode interference. Offloaded requests are 50% SLOWER due to
P-side queuing (14.7s) + RDMA overhead (5.7s).

Interference IS real: 89% of WARM/MEDIUM have 1+ concurrent HEAVY prefill.
But elastic PS in current form can't address it because cold HEAVY prefills
(the majority) can't benefit from offload.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-05-23 16:49:25 +08:00

analysis

Add comprehensive research findings document

2026-05-23 07:16:31 +08:00

experiments

Add elastic PS evaluation plan for production-realistic trace

2026-05-23 15:56:05 +08:00

patches

Add vLLM patches directory for version-controlled patch management

2026-05-22 00:26:14 +08:00

replayer

Fix replay methodology: trace-driven dispatch, no artificial limits

2026-05-23 12:43:41 +08:00

scripts

Fix 4 elastic PS bugs: D accounting, offload cap, cache migration, prefix sync

2026-05-23 15:55:11 +08:00

third_party/vllm

PS experiments + H4 cache-gate + GPU profiling + Mooncake elif→if fix

2026-05-23 02:14:37 +08:00

.gitignore

Phase 1 milestone: system-level analysis + reproducible report

2026-05-22 16:17:41 +08:00

pyproject.toml

Agentic workload PD separation analysis with trace-driven benchmarks

2026-05-21 21:21:57 +08:00

REPORT.md

Elastic PS eval: near-neutral, offload gate triggers only 14% of HEAVY

2026-05-23 16:49:25 +08:00

TODO.md

LMetric routing policy (OSDI'26) + A/B results vs linear baseline

2026-05-22 16:57:32 +08:00

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