round-robin-arbiter-grant

Task gallery / Electrical engineering (RTL) / Version 1

Reference solution (oracle): Unverified
No-op resistance check: Unverified
QA verdict: Not recorded
Aggregate eligibility: Eligible version

The task

write a verilog module TopModule sharing one resource among four requesters. ports: clk, rst, req[3:0], lock, outputs grant[3:0], grantvalid. grant is one-hot; grantvalid marks cycles it names someone. the very first time all four ask at once, requester 0 wins. fairness is a circular queue: the one just served goes to the back. walk up from just past the last winner, wrapping 3 to 0; grant the first asker. all four …

Excerpt only; not a complete executable task specification. Task ID task_84c8c181919447da · version 1. Selection status: not fully recorded.

Results by model and effort

This exact task version only. Every rate is passes / valid runs with a Wilson 95% interval; n≤2 remains counts only. Macro aggregation does not apply within a single task. Baselines are summarized in the quality gates, not ranked. A passed no-op resistance check means that doing nothing did not solve the task.

Current evidence

Model / effort	Verifier result [95% Wilson]	Diagnostic labels / valid	HARNESS_ERROR · excluded	Outcome classes

Legacy evidence

Model / effort	Verifier result [95% Wilson]	Diagnostic labels / valid	HARNESS_ERROR · excluded	Outcome classes
Claude Opus 4.8 · default (unverified)	10/10 · 100.0% [72.2%, 100.0%]	0 / 10	0	GOOD_FAILURE: 0 BAD_FAILURE: 0 GOOD_SUCCESS: 0 BAD_SUCCESS: 0

Every recorded run

10 recorded trials, including controls. Diagnostic labels do not replace verifier reward. Labels and quality checks are source declarations, not independently attested here. Internal evidence remains private; a missing public URL is shown explicitly. Records with invalid or absent rewards are not scored.

Run / model	Date / source	Reward / eligibility	Diagnostic class / source	Resources	Evidence
`trial_9e3cece417fe4108` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 15,220 Turns: 4 Cost: $0.6263	Not publicly available
`trial_bfc99358724243c1` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 17,425 Turns: 5 Cost: $0.7214	Not publicly available
`trial_14ac93c736d742e1` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 37,558 Turns: 17 Cost: $1.7950	Not publicly available
`trial_b11a2cee2d8c465d` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 15,220 Turns: 8 Cost: $0.7021	Not publicly available
`trial_4d04a362e0cc4138` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 15,561 Turns: 7 Cost: $0.6835	Not publicly available
`trial_2f0b98d166a1450d` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 13,901 Turns: 4 Cost: $0.5823	Not publicly available
`trial_26fd19a4334440b3` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 20,169 Turns: 7 Cost: $0.8570	Not publicly available
`trial_14290a8b006040e4` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 32,246 Turns: 14 Cost: $1.4598	Not publicly available
`trial_398a305ea16e410f` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 35,959 Turns: 15 Cost: $1.6874	Not publicly available
`trial_f4ecedb552544a5e` Claude Opus 4.8 · default (unverified)	Jul 5, 2026 console	1 · valid	No diagnostic label derived	Tokens: 38,437 Turns: 14 Cost: $1.7218	Not publicly available