Joey Grasty
7ac0b36ae6
Metrics lean toward ep3 but aren't decisive enough to call it outright. README now presents both checkpoints as candidates and walks through running them side-by-side (different ports) for direct comparison in voice-bench.html, rather than naming one as current production.
103 lines
4.2 KiB
Markdown
103 lines
4.2 KiB
Markdown
# Voice Bench
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A browser tool for exploring the Vox Day / Christopher Nuttall SFT packages
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and generating scenes from them against the joint CPT+SFT model, including a
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STYLE-swap control for testing voice conditioning across authors.
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Full training report (CPT + SFT setup, results, and evaluation data):
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https://claude.ai/code/artifact/d3415f56-3f9b-40de-aa70-ac0992549ced
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## What's here
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- `voice-bench.html` — the tool itself. It's a single self-contained file
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with no install step: open it in a browser (double-click it, or
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File > Open). It needs no server of its own — it just needs a model server
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to talk to (see below).
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- `start-model.sh` — starts the model server (`llama-server`, from
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[llama.cpp](https://github.com/ggml-org/llama.cpp)) that `voice-bench.html`
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sends generation requests to.
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The 208 training/holdout packages themselves are already embedded inside
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`voice-bench.html` — nothing else needs downloading for browsing.
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## One-time setup (per machine)
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### 1. Get the model file
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Two candidate checkpoints are available. Separability and length-calibration
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metrics lean slightly toward epoch 3 (see `JOINT_TRAINING_CLOSEOUT_REPORT.md`
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for the numbers), but not decisively enough to settle it on metrics alone —
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**live testing through `voice-bench.html` is what should decide between
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them.** Download both, run one at a time (or both at once on different
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ports — see step 3), and compare generations on real held-out packages
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before picking one.
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- `Qwen3-30B-A3B-VoxDay-Nuttall-SFT-ep3-Q8_0.gguf` (~31GB): https://drive.google.com/open?id=1QZT488Uu1b9Pxoie9Hs2lnxtOhMD4Pwr
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- `Qwen3-30B-A3B-VoxDay-Nuttall-SFT-ep2-Q8_0.gguf` (~31GB): https://drive.google.com/open?id=1q1w_XMp6oRmfx8xqXDV-HvDx_krVxQtD
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Memory needed: ~31GB for the weights plus ~3GB of KV cache at the full
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32768-token context, so ~35GB total. Confirmed working on a DGX Spark;
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should comfortably fit a 48GB L40 as well. If a machine has less than that,
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lower `CTX_SIZE` (below) before anything else.
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### 2. Build llama.cpp with CUDA support
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Needs an NVIDIA GPU with the CUDA toolkit and `cmake` already installed.
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```
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git clone https://github.com/ggml-org/llama.cpp
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cd llama.cpp
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cmake -B build -DGGML_CUDA=ON
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cmake --build build --config Release -j
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```
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This produces `llama.cpp/build/bin/llama-server`, which is what
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`start-model.sh` runs.
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### 3. Start the model server
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Point `MODEL_PATH` at whichever checkpoint you're testing:
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```
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MODEL_PATH=/path/to/Qwen3-30B-A3B-VoxDay-Nuttall-SFT-ep3-Q8_0.gguf \
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LLAMA_SERVER=/path/to/llama.cpp/build/bin/llama-server \
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./start-model.sh
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```
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Leave this running in a terminal — it's the process `voice-bench.html`
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talks to. If you'd rather not set environment variables every time, edit the
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defaults at the top of `start-model.sh` instead.
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**To compare epoch 2 and epoch 3 directly**, run both at once on different
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ports (memory permitting — see below):
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```
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MODEL_PATH=/path/to/Qwen3-30B-A3B-VoxDay-Nuttall-SFT-ep2-Q8_0.gguf PORT=8200 ./start-model.sh
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MODEL_PATH=/path/to/Qwen3-30B-A3B-VoxDay-Nuttall-SFT-ep3-Q8_0.gguf PORT=8201 ./start-model.sh
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```
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then switch `voice-bench.html`'s "Server" field between `:8200` and `:8201`
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on the same packet to compare their generations side by side.
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### 4. Open voice-bench.html
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Open the file in a browser. The "Server" field in the top-right corner
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defaults to `http://127.0.0.1:8200`, which is correct if the model server is
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running on the same machine as the browser. If it's running on a different
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machine on your network, change it to that machine's address instead, e.g.
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`http://192.168.1.50:8200` — and make sure that machine's firewall allows
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inbound connections on the port (`sudo ufw allow from <your-subnet> to any
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port 8200 proto tcp` on Ubuntu).
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## Troubleshooting
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- **"SERVER UNREACHABLE"** in the page header — the model server isn't
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running yet, is still loading the model (can take a minute for a 31GB
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file), or the Server field points at the wrong address/port.
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- **Out of memory when starting the server** — re-run with a smaller
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context, e.g. `CTX_SIZE=8192 ./start-model.sh`.
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- **Opening the HTML file from a typed path does something odd in
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Firefox** — use File > Open (Ctrl+O) instead of typing the path into the
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address bar, or paste the full `file:///home/you/path/voice-bench.html`
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URL.
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