GFX1100-TG200: GDN b/a GEMV merge (VT_GDN_MERGED_BA_ROCM) — closed negative
Nobody has claimed this yet.
- Dominant language
- C++
- Stars
- 423
- Forks
- 53
- Avg merge
- 20h 26m
- Merged PRs (30d)
- 310
Description
Row: GFX1100-TG200
Summary
GDN b/a same-input GEMV merge: merge the b and a projections of the GDN block when they share the same input tensor. Adjudicated bit-identical, closed below the bar in the original campaign.
Lever
VT_GDN_MERGED_BA_ROCM=1 (default OFF).
Benchmark
A/B interleaved, 5 pairs, Qwen3.5-4B Q4_K_M, 256 tokens, temp 0, seed 0:
| A (T25 chain) | B (T25+T35r3) | Delta | |
|---|---|---|---|
| Median | 32.40 | 32.40 | -0.05% |
Noise — confirms the original campaign's negative disposition.
Token identity
PASS — identical output to T25 chain.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the issue's benchmark and token-identity results for GFX1100-TG200, then inspect the VT_GDN_MERGED_BA_ROCM=1 lever if an implementation target is later identified. The payload names no files, tests, or requested change; the documented outcome is a negative result, so completion criteria are not defined.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- performance
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Active
- Clarity
- Needs clarification
- Newbie friendliness
- 18/100