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tests/evals/gsm8k/README.md

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+# GSM8K Accuracy Evaluation
+
+This directory contains a replacement for the lm-eval-harness GSM8K evaluation, using an isolated GSM8K script and vLLM server for better performance and control.
+
+## Usage
+
+### Run tests with pytest (like buildkite)
+
+```bash
+pytest -s -v tests/gsm8k/test_gsm8k_correctness.py \
+    --config-list-file=configs/models-small.txt \
+    --tp-size=1
+```
+
+### Run standalone evaluation script
+
+```bash
+# Start vLLM server first
+vllm serve Qwen/Qwen2.5-1.5B-Instruct --port 8000
+
+# Run evaluation
+python tests/evals/gsm8k/gsm8k_eval.py --port 8000
+```
+
+## Configuration Format
+
+Model configs in `configs/` directory use this YAML format:
+
+```yaml
+model_name: "Qwen/Qwen2.5-1.5B-Instruct"
+accuracy_threshold: 0.54  # Minimum expected accuracy
+num_questions: 1319       # Number of questions (default: full test set)
+num_fewshot: 5            # Few-shot examples from train set
+max_model_len: 4096       # Model context length
+```