agentic-kvc

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Author	SHA1	Message	Date
Gahow Wang	d71a111099	Paper section: PD-sep scaffold + drop --enforce-eager from launch scripts Adds analysis/pd_sep_paper_section/ as the home for the "PD separation is net negative under agentic workloads" paper section: plot scripts for C1 (workload chars), C6 (roofline), C7 (routing-vs-PD-sep lever), the C6/C7 PDFs already rendered, and a README mapping candidate claims to required figures plus open re-run items. Removes --enforce-eager from bench.sh and all active launch scripts so cuda graphs are captured -- the prior methodology suppressed one of PD-sep's structural advantages (D-node fixed-shape decode). Legacy scripts under scripts/legacy/ are intentionally untouched as historical records. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>	2026-05-25 11:24:16 +08:00
Gahow Wang	1dea82f2ff	launch_phase1_ps: parameterise project + model paths (B6 followup)	2026-05-23 21:14:15 +08:00
Gahow Wang	3bc37cc6d5	PS experiments + H4 cache-gate + GPU profiling + Mooncake elif→if fix Experiments run: - Phase 0: kv_both has zero idle overhead (TPOT +1.3%, noise) - PS V1 (cold prefill): REJECTED — PS always slower than cached C - PS V1+flexD: 92.5% OK, HEAVY TTFT 7.8s (baseline 5.0s) — PS bottleneck - V2 (C_s prefill + flexible D): E2E -9% but 6 errors, RDMA bimodal - H4 (cache-gate): 198/200 OK, GPU imbalance 4.0x→2.0x, but HEAVY_OFFLOAD TTFT=11.5s due to RDMA. HEAVY_COLO improved 10.5% from better balance. - H5: Mooncake RDMA transfer R²=0.095, bimodal (0.6s or 18-30s) Key findings: - Mooncake lacks layerwise KV transfer → RDMA is pure sequential overhead - 92% of HEAVY are turn-1 cold → offloading cold requests always loses - GPU balance improvement from routing IS real (-10.5% HEAVY_COLO TTFT) - RDMA transfer negates the routing benefit for offloaded requests Code changes: - bench.sh: add GPU timeline monitoring (gpu_monitor.sh during benchmark) - cache_aware_proxy.py: H4 cache-gate, flexible D, PS routing - mooncake_connector.py: elif→if fix (allow dual prefill+decode flags) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-05-23 02:14:37 +08:00

Author

SHA1

Message

Date

Gahow Wang

d71a111099

Paper section: PD-sep scaffold + drop --enforce-eager from launch scripts

Adds analysis/pd_sep_paper_section/ as the home for the "PD separation is
net negative under agentic workloads" paper section: plot scripts for C1
(workload chars), C6 (roofline), C7 (routing-vs-PD-sep lever), the C6/C7
PDFs already rendered, and a README mapping candidate claims to required
figures plus open re-run items.

Removes --enforce-eager from bench.sh and all active launch scripts so
cuda graphs are captured -- the prior methodology suppressed one of
PD-sep's structural advantages (D-node fixed-shape decode). Legacy
scripts under scripts/legacy/ are intentionally untouched as historical
records.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-25 11:24:16 +08:00

Gahow Wang

1dea82f2ff

launch_phase1_ps: parameterise project + model paths (B6 followup)

2026-05-23 21:14:15 +08:00

Gahow Wang

3bc37cc6d5

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

Experiments run:
- Phase 0: kv_both has zero idle overhead (TPOT +1.3%, noise)
- PS V1 (cold prefill): REJECTED — PS always slower than cached C
- PS V1+flexD: 92.5% OK, HEAVY TTFT 7.8s (baseline 5.0s) — PS bottleneck
- V2 (C_s prefill + flexible D): E2E -9% but 6 errors, RDMA bimodal
- H4 (cache-gate): 198/200 OK, GPU imbalance 4.0x→2.0x, but HEAVY_OFFLOAD
  TTFT=11.5s due to RDMA. HEAVY_COLO improved 10.5% from better balance.
- H5: Mooncake RDMA transfer R²=0.095, bimodal (0.6s or 18-30s)

Key findings:
- Mooncake lacks layerwise KV transfer → RDMA is pure sequential overhead
- 92% of HEAVY are turn-1 cold → offloading cold requests always loses
- GPU balance improvement from routing IS real (-10.5% HEAVY_COLO TTFT)
- RDMA transfer negates the routing benefit for offloaded requests

Code changes:
- bench.sh: add GPU timeline monitoring (gpu_monitor.sh during benchmark)
- cache_aware_proxy.py: H4 cache-gate, flexible D, PS routing
- mooncake_connector.py: elif→if fix (allow dual prefill+decode flags)

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

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

3 Commits