OWM — Orbital Workload Migrator

A live earth–space scheduler that decides where compute jobs should run across a low-Earth-orbit constellation and terrestrial datacenters, then migrates them as conditions change.

Built as a simulation with a coherent physics and scoring model — not production flight software, but structured so the core decisions are testable and the architecture maps onto a real orbital compute network.

What it does

• Models a three-plane LEO constellation (12 nodes) plus 3 ground datacenters and 5 ground stations.
• Each satellite tracks state of charge, temperature, radiation dose, inter-satellite link bandwidth, ground contact windows, and eclipse timing.
• Jobs carry an SLA, payload size, radiation class, and region preference.
• A weighted multi-factor scorer ranks every node on power, thermal, radiation, bandwidth, latency, contact, forecast, and capacity, then applies policy multipliers (sunlit-first, earth-anchor, max-orbital).
• The scheduler migrates jobs when a better node appears, with hysteresis to avoid thrashing, and models transfer time from payload size and link speed.
• A terminal CLI lets you submit, migrate, hold, resume, change policy, and inspect the fleet live.

Architecture

src/lib/owm/
  types.ts          domain types (SatState, Job, ScoreBreakdown, …)
  constants.ts      orbital + scoring constants and weights
  vec.ts            3D vector math
  physics.ts        Keplerian propagation, eclipse, radiation, thermal, SOC
  constellation.ts  fleet construction and tick
  scheduler.ts      scoring, placement decisions, transfer cost
  store.ts          zustand simulation state + actions
  cli.ts            command parser + formatters
  presets.ts        sample workloads

The UI (src/components/) renders an orbital map, job board, telemetry panel, and terminal. The simulation runs in the browser; the CLI is pure functions that the terminal drives.

Run it

npm install
npm run dev

Open the preview, switch to the terminal view, and try:

submit --name demo --kind inference --tflops 24 --gb 16 --sla-ms 25
jobs
fleet
migrate JOB-0001 SAT-03
policy earth-anchor
clock 16

Tests

npm test

Covers the scheduler's pure logic: placement resolution, scoring ordering, radiation penalties, hysteresis, migration triggers, held/pinned/done guards, and transfer-cost bounds. No network or orbital data required.

Design notes

• Radiation is a South-Atlantic-Anomaly Gaussian plus polar horns — a stand-in for a real AP8/AE8 model.
• Thermal is a single time-constant toward an eclipse/sunlit equilibrium.
• Orbits are simplified Keplerian (no SGP4, no J2, no drag). Swapping in real TLEs is a thin layer on physics.ts.
• Transfer cost accounts for payload size and path bandwidth but not checkpoint/restart semantics or mid-hop contact loss.

Status

Simulation-grade. The scoring and migration logic is coherent and tested; the physics is intentionally simplified. Suitable as a portfolio demo and as a starting point for a real orbital scheduler.