Large attribute-balance workload (111 participants)

A large synthetic workload exercising large-instance attribute-balance pressure across 11 groups and 5 sessions.

Open in GroupMixer Results

111 people11 groups5 sessions60s limit8 CPUs

Scenario ID: internal.transfer-attribute-balance-111p.v1
Problem hash: sha256:c79781e1f7dd0c2fcd6e4aeff76bf318489e7d284cddb84e42de0b06649ab1c1

Comparator results

publication r20

Barasu-kun

Not run

valid —best —median —

Configuration

barasu-kun-0586a3f-sequential-v1

evidence r20 · verify

Not run on this case; capability has not been assessed.

GolfSoftware Play All

Not run

valid —best —median —

Configuration

golfsoftware-play-all-live-55-second-v1

evidence r20 · verify

Not run on this case; capability has not been assessed.

Good-Enough Golfers

Not run

valid —best —median —

Configuration

good-enough-golfers-4db20742-fixed-ga-v1

evidence r20 · verify

Not run on this case; capability has not been assessed.

GroupMixer

Feasible

valid 5/5best 152median 154

Configuration

browser-auto-8-defaults-v1

evidence r20 · eligible

Measured 11 October 2026 on an Intel Core Ultra 9 386H; eight pinned CPUs, 8 GiB physical memory, swap disabled. Current production browser Auto, eight requested lanes, automatic Extreme handoff and default CP-SAT admission.

Gurobi

Unavailable

valid —best —median —

Configuration

unavailable-license

evidence r20 · unavailable

No runnable licensed environment and reproducible formulation are available.

Halftime Team Pairings

Not run

valid —best —median —

Configuration

halftime-team-pairings-live-sequential-last-six-v1

evidence r20 · verify

Not run on this case; capability has not been assessed.

Hexaly

Unavailable

valid —best —median —

Configuration

unavailable-license

evidence r20 · unavailable

No runnable licensed environment and reproducible formulation are available.

IIENSTITU Random Group Generator

Not run

valid —best —median —

Configuration

iienstitu-live-avoid-history-seeded-v1

evidence r20 · verify

Not run on this case; capability has not been assessed.

Optimal Group Generator

Not run

valid —best —median —

Configuration

optimal-group-generator-live-fixed-ga-sequential-v1

evidence r20 · verify

Not run on this case; capability has not been assessed.

Google OR-Tools CP-SAT

Feasible

valid 5/5best 487median 512

Configuration

ortools-cpsat-measured-20261011:generic-staged-v4

evidence r20 · eligible

Measured 11 October 2026 on an Intel Core Ultra 9 386H; eight pinned CPUs, 8 GiB physical memory, swap disabled. Measured OR-Tools 9.15.6755 campaign formulation and parameters; this additional case was outside the original frozen matrix.

Social Golfer Online

Not run

valid —best —median —

Configuration

social-golfer-online-recompute-all-v1

evidence r20 · verify

Not run on this case; capability has not been assessed.

Teach Arcade Group Maker

Not run

valid —best —median —

Configuration

teach-arcade-live-roundrobin-sequential-history-v1

evidence r20 · verify

Not run on this case; capability has not been assessed.

TourneyCard Golf Randomizer

Not run

valid —best —median —

Configuration

tourneycard-v2.0.4-case-specific-iterations-v2

evidence r20 · verify

Not run on this case; capability has not been assessed.

Comparator status, attempts, score, and configuration
Tool	Status	Valid	Best	Median	Evidence
Barasu-kun	Not run	—	—	—	Configuration `barasu-kun-0586a3f-sequential-v1` evidence r20 · verify Not run on this case; capability has not been assessed.
GolfSoftware Play All	Not run	—	—	—	Configuration `golfsoftware-play-all-live-55-second-v1` evidence r20 · verify Not run on this case; capability has not been assessed.
Good-Enough Golfers	Not run	—	—	—	Configuration `good-enough-golfers-4db20742-fixed-ga-v1` evidence r20 · verify Not run on this case; capability has not been assessed.
GroupMixer	Feasible	5/5	152	154	Configuration `browser-auto-8-defaults-v1` evidence r20 · eligible Measured 11 October 2026 on an Intel Core Ultra 9 386H; eight pinned CPUs, 8 GiB physical memory, swap disabled. Current production browser Auto, eight requested lanes, automatic Extreme handoff and default CP-SAT admission.
Gurobi	Unavailable	—	—	—	Configuration `unavailable-license` evidence r20 · unavailable No runnable licensed environment and reproducible formulation are available.
Halftime Team Pairings	Not run	—	—	—	Configuration `halftime-team-pairings-live-sequential-last-six-v1` evidence r20 · verify Not run on this case; capability has not been assessed.
Hexaly	Unavailable	—	—	—	Configuration `unavailable-license` evidence r20 · unavailable No runnable licensed environment and reproducible formulation are available.
IIENSTITU Random Group Generator	Not run	—	—	—	Configuration `iienstitu-live-avoid-history-seeded-v1` evidence r20 · verify Not run on this case; capability has not been assessed.
Optimal Group Generator	Not run	—	—	—	Configuration `optimal-group-generator-live-fixed-ga-sequential-v1` evidence r20 · verify Not run on this case; capability has not been assessed.
Google OR-Tools CP-SAT	Feasible	5/5	487	512	Configuration `ortools-cpsat-measured-20261011:generic-staged-v4` evidence r20 · eligible Measured 11 October 2026 on an Intel Core Ultra 9 386H; eight pinned CPUs, 8 GiB physical memory, swap disabled. Measured OR-Tools 9.15.6755 campaign formulation and parameters; this additional case was outside the original frozen matrix.
Social Golfer Online	Not run	—	—	—	Configuration `social-golfer-online-recompute-all-v1` evidence r20 · verify Not run on this case; capability has not been assessed.
Teach Arcade Group Maker	Not run	—	—	—	Configuration `teach-arcade-live-roundrobin-sequential-history-v1` evidence r20 · verify Not run on this case; capability has not been assessed.
TourneyCard Golf Randomizer	Not run	—	—	—	Configuration `tourneycard-v2.0.4-case-specific-iterations-v2` evidence r20 · verify Not run on this case; capability has not been assessed.

Measured attempts

GroupMixer · seed-101feasible timeout

local browsercost 15560.276sRSS —

GroupMixer · seed-202feasible timeout

local browsercost 15359.481sRSS —

GroupMixer · seed-303feasible timeout

local browsercost 15260.266sRSS —

GroupMixer · seed-404feasible timeout

local browsercost 15460.122sRSS —

GroupMixer · seed-505feasible timeout

local browsercost 15460.273sRSS —

Google OR-Tools CP-SAT · seed-101feasible timeout

native processcost 50559.218sRSS —

Google OR-Tools CP-SAT · seed-202feasible timeout

native processcost 53259.139sRSS —

Google OR-Tools CP-SAT · seed-303feasible timeout

native processcost 51259.242sRSS —

Google OR-Tools CP-SAT · seed-404feasible timeout

native processcost 48759.183sRSS —

Google OR-Tools CP-SAT · seed-505feasible timeout

native processcost 51559.183sRSS —

Per-attempt benchmark status, execution class, canonical cost, runtime, and memory
Tool / attempt	Execution	Status	Cost	Wall	Peak RSS
GroupMixer · seed-101	Browser	feasible timeout	155	60.276s	—
GroupMixer · seed-202	Browser	feasible timeout	153	59.481s	—
GroupMixer · seed-303	Browser	feasible timeout	152	60.266s	—
GroupMixer · seed-404	Browser	feasible timeout	154	60.122s	—
GroupMixer · seed-505	Browser	feasible timeout	154	60.273s	—
Google OR-Tools CP-SAT · seed-101	Native	feasible timeout	505	59.218s	—
Google OR-Tools CP-SAT · seed-202	Native	feasible timeout	532	59.139s	—
Google OR-Tools CP-SAT · seed-303	Native	feasible timeout	512	59.242s	—
Google OR-Tools CP-SAT · seed-404	Native	feasible timeout	487	59.183s	—
Google OR-Tools CP-SAT · seed-505	Native	feasible timeout	515	59.183s	—

Pair-frequency distribution

GroupMixer · seed-303

Number of participant pairs by meeting frequency
Meetings	Participant pairs
1	2546
2	45
3	2
4	2
5	3

Unique contacts: 2,598
Repeat excess: 67
Repeated pairs: 52
Worst pair count: 5
Min contacts / person: 38
Mean contacts / person: 46.81

Evidence and reproduction

gm-scenarios materialize internal.transfer-attribute-balance-111p.v1 --pretty --output case.json

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