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Revert "Remove KV cache quantization, increase batch/ubatch on frank-default-large"

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The Aug 13 change crashed frank-default-large in a restart loop. The service
segfaulted ~15s into model load (SIGSEGV in hipMalloc during load). The
benchmark (frank-default-large-benchmark.md) already proved ubatch 2048 OOMs
(40.9GB prefill buffer) and batch 2048 / ubatch 512 is the fits-and-loads
config on the 96GiB UMA budget. Restore q8_0/q8_0 KV cache (FA pairing) and
batch 2048 / ubatch 512.

Also fix deployment.md: KV is q8_0 K / q8_0 V (not f16 V) since 334b6af.
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Frank
2026-08-13 17:04:02 -07:00
parent c984a3e4e6
commit 6663af1041
3 changed files with 20 additions and 8 deletions
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docs/deployment.md
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@@ -100,7 +100,7 @@ curl -sf http://127.0.0.1:7770/health
### Dankclaw — frank-default-large
The active service on Dankclaw runs llama.cpp serving the HauhauCS Qwen3.6-27B uncensored `Q8_K_P` model under the alias `frank-default-large` on port 7770. It uses a **DFlash draft model** (`draft-dflash`) for speculative decoding on the **ROCm (HIP)** backend, with **3 parallel slots at 200700 context each** (pool 602100), KV cache `q8_0` K / `f16` V on GPU, full layer offload (`--gpu-layers all`, `--fit off`), and batch 2048 / ubatch 512. The unit file is `scripts/frank-default-large.service`. It launches through `scripts/serve-llama-frank-large.sh`, which reads tunables from `scripts/frank-default-large.env`.
The active service on Dankclaw runs llama.cpp serving the HauhauCS Qwen3.6-27B uncensored `Q8_K_P` model under the alias `frank-default-large` on port 7770. It uses a **DFlash draft model** (`draft-dflash`) for speculative decoding on the **ROCm (HIP)** backend, with **3 parallel slots at 200700 context each** (pool 602100), KV cache `q8_0` K / `q8_0` V on GPU (pairing required for Flash Attention on this build), full layer offload (`--gpu-layers all`, `--fit off`), and batch 2048 / ubatch 512. The unit file is `scripts/frank-default-large.service`. It launches through `scripts/serve-llama-frank-large.sh`, which reads tunables from `scripts/frank-default-large.env`.
> Note: this service replaced the retired vLLM-ROCm CIRU INT4 Ling-3.0-flash runtime and the earlier llama-serve/vLLM units on Dankclaw. See [[frank-default-large-benchmark]] for the benchmark that drove the backend and spec choices.