| --- |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: data/train-* |
| pretty_name: Mercury (verl efficiency eval set) |
| license: cc-by-nc-4.0 |
| language: |
| - en |
| task_categories: |
| - text-generation |
| tags: |
| - code |
| - code-generation |
| - code-efficiency |
| - benchmark |
| - evaluation |
| - verl |
| --- |
| |
| # Mercury (verl efficiency eval set) |
|
|
| The **eval** split of [Elfsong/Mercury](https://huggingface.co/datasets/Elfsong/Mercury) |
| (arXiv [2402.07844](https://arxiv.org/abs/2402.07844); 256 LeetCode-style tasks; |
| the train split ships no test cases and is not gradable), converted to the verl |
| rule-reward schema by `verl/scripts/data/mercury.py`. Source license |
| **CC-BY-NC-4.0** (non-commercial) -- this conversion keeps that license. |
|
|
| Every row's ground truth carries the full official scoring contract: entry |
| point, the task's `convert_offline`/`evaluate_offline` hooks (lctk linked-list / |
| binary-tree conversions included), the materialised test cases, and the |
| reference solution pool. All 256 rows verified at build time: at least one |
| reference solution passes the grading harness locally. |
|
|
| **Scoring** (`verl/verl/utils/reward_score/mercury.py`): the extracted |
| `class Solution` runs all test cases through the task's own hooks in ONE timed |
| firejail execution, reproducing the official sandbox |
| (github.com/Elfsong/Mercury `src/sandbox.py`). On a full pass, the official |
| **Beyond** percentile is computed against the task's reference solutions |
| **re-executed on the same machine** (cached per task); |
| `reward = 0.5*pass + 0.5*beyond`. Eval recipe: `verl/recipe/run_mercury_eval.sh`. |
|
|
| ## Known compromises vs the official evaluator |
|
|
| - At most `MERCURY_MAX_REFS` (default 8) of the ~18 reference solutions are |
| measured per task, sampled evenly across the LeetCode-runtime ordering, to |
| bound reward-time cost. |
| - `Beyond = clip((max_rt - rt)/(max_rt - min_rt), 0, 1)` -- the paper's formula. |
| The reference implementation clamps the numerator at 1 second *before* |
| dividing (treated here as a bug). |
| - Runtimes come from a single un-repeated pass (official parity); on this |
| benchmark's small generated inputs, sub-millisecond loop times make Beyond |
| noisy at the per-task level. Aggregate Beyond@1 over 256 tasks is stable. |
| - Execution runs under firejail rlimits, not the official in-process |
| reliability guard. |
|
|
