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Show HN: Pebble Falcon–autonomous right-sizer and carbon-aware K8s scheduler

1•kevalshah90•5h ago
Hi HN — I’m Keval, part of the AI team behind Pebble Falcon.

What it Pebble Falcon:

Two long-running agents you deploy inside your k8s cluster.

> PerfectFit:

- Streams pod / VM / GPU utilization

- Calculates head-room

- Generates JSON patches to right-size CPU, memory and storage

- Optional human-approval step

> EcoAgent

- Polls real-time grid-carbon feed and re-configures GPU nodes and pods to maximize clean energy use.

- Re-queues batch jobs to the region with the lowest gCO₂/kWh that still meets your latency SLA

A lightweight web UI shows cost saved, watts avoided and a 30-day projection.

No data leaves the cluster; the only inbound feed is public carbon intensity.

Why we built it:

We kept seeing GPU nodes idling below 20 % while ETL jobs ran in high-carbon regions. Manual “rightsizing sprints” never caught up.

Pilot result (40-node GPU cluster, 30 days) 70% idle compute removed

4160 kg CO₂ avoided (≈ six NYC→London flights)

Pebble Falcon needs access to clusters so no public sandbox yet. Instead we recorded a 3-min overview of the agents.

Video Demo: https://youtu.be/DTpHxAmVrAo

However if you’re interested in trying it out, comment and we’ll get in contact and can add you to our pilot test: https://www.gopebble.com/sign-up

AMA about energy, cost and compute aware scheduling for AI workloads.

Comments

JojoFatsani•5h ago
It’s neat but I’m sure it would kill something important before too long.

Hopefully this is “just built in” to kube within the next few years..

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