Gahow Wang 1262c9c22e Migration transfer-cost study: KV transfer is slow on busy GPUs ...

MIGRATION_TRANSFER_COST.md: under real load, migration KV transfer runs at
~3 GB/s vs ~10 GB/s idle. Decomposed (instruments + MB6 microbench) into
~55% RDMA-actual (HBM/PCIe contention with running kernels: 7.6->4.0 GB/s)
+ ~45% control-plane GIL starvation during long prefills. Reproduced on a
fresh upstream venv (byte-identical transfer path) -> upstream/hardware
inherent, not our patch. Layerwise is the wrong lever; the tax is structural
on a loaded agentic cluster. Includes mb6_transfer_under_load + run_mb6,
instrument_dst_migration/mooncake, and the dst/transfer decomposition analyzers.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-05-29 11:53:01 +08:00

analysis

PD_DISAGG_RESULTS §6.3: producer hot-pinning figure

2026-05-29 00:38:20 +08:00

docs

Docs: reconcile routing docs with current hybrid direction

2026-05-25 10:47:14 +08:00

experiments

Add elastic PS evaluation plan for production-realistic trace

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

figs

PD_DISAGG_RESULTS §6.3: producer hot-pinning figure

2026-05-29 00:38:20 +08:00

microbench

Migration transfer-cost study: KV transfer is slow on busy GPUs

2026-05-29 11:53:01 +08:00

patches

Add vLLM patches directory for version-controlled patch management

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

replayer

EAR outline: copy reusable figures, mark migration sections deferred

2026-05-27 01:44:13 +08:00

scripts

Unified-routing A+B ablation: decode-aware LMetric + v3 anti-hotspot

2026-05-29 11:52:44 +08:00

tests

unified_v2.1: relax gates + add unified_kv_both isolation control

2026-05-26 10:40:57 +08:00

third_party/vllm

A3: vLLM scheduler patch for step-level JSONL log

2026-05-25 16:19:11 +08:00

.gitignore

Phase 1 milestone: system-level analysis + reproducible report

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

FIXES.md

Add FIXES.md with prioritized repo cleanup checklist

2026-05-23 20:35:56 +08:00

MEETING.md

§2.3 reframe: dispatch coupling is regime-dependent, not binary chatbot/agentic

2026-05-27 16:51:38 +08:00

PAPER_OUTLINE.md

§2.3 reframe: dispatch coupling is regime-dependent, not binary chatbot/agentic

2026-05-27 16:51:38 +08:00

pyproject.toml

Fix review bugs: PD-sep counter leaks, hardcoded paths, missing deps

2026-05-26 15:54:55 +08:00

REPORT.md

Docs: reconcile routing docs with current hybrid direction

2026-05-25 10:47:14 +08:00

RESULTS_SUMMARY.md

Correct PD-disagg cost/benefit framing across repo

2026-05-27 22:04:49 +08:00

TODO.md

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

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

uv.lock

Fix review P2s: lockfile, model path convention, trap robustness

2026-05-26 16:05:43 +08:00

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