Sailing flotilla stress workload

132 sailors, eleven boats, six rotations, skipper anchors, hard-apart crew pairs, exact role balance, and a repeat limit.

Open in GroupMixer Results

132 people11 groups6 sessions60s limit8 CPUs

Scenario ID: internal.sailing-flotilla-stress-test.v1
Problem hash: sha256:a781b636bbb3c98d52392d37a7fce07e7ab07b0511b03f01f7beaeb86c9e7d25

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 228median 236

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 9,466median 13,184

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	228	236	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	9,466	13,184	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 23660.083sRSS —

GroupMixer · seed-202feasible timeout

local browsercost 24659.628sRSS —

GroupMixer · seed-303feasible timeout

local browsercost 22860.027sRSS —

GroupMixer · seed-404feasible timeout

local browsercost 23260.329sRSS —

GroupMixer · seed-505feasible timeout

local browsercost 25060.432sRSS —

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

native processcost 15,53259.455sRSS —

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

native processcost 13,18459.431sRSS —

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

native processcost 9,46659.4sRSS —

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

native processcost 15,49259.616sRSS —

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

native processcost 9,87659.439sRSS —

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	236	60.083s	—
GroupMixer · seed-202	Browser	feasible timeout	246	59.628s	—
GroupMixer · seed-303	Browser	feasible timeout	228	60.027s	—
GroupMixer · seed-404	Browser	feasible timeout	232	60.329s	—
GroupMixer · seed-505	Browser	feasible timeout	250	60.432s	—
Google OR-Tools CP-SAT · seed-101	Native	feasible timeout	15,532	59.455s	—
Google OR-Tools CP-SAT · seed-202	Native	feasible timeout	13,184	59.431s	—
Google OR-Tools CP-SAT · seed-303	Native	feasible timeout	9,466	59.4s	—
Google OR-Tools CP-SAT · seed-404	Native	feasible timeout	15,492	59.616s	—
Google OR-Tools CP-SAT · seed-505	Native	feasible timeout	9,876	59.439s	—

Pair-frequency distribution

GroupMixer · seed-303

Number of participant pairs by meeting frequency
Meetings	Participant pairs
1	3908
2	224

Unique contacts: 4,132
Repeat excess: 224
Repeated pairs: 224
Worst pair count: 2
Min contacts / person: 59
Mean contacts / person: 62.61

Evidence and reproduction

gm-scenarios materialize internal.sailing-flotilla-stress-test.v1 --pretty --output case.json

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