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Google Cloud adds a high-density sandbox runtime for agent workloads

cloud.google.com by Alex Barrett 16 min read Editor score 6/10

Google Cloud reports that its open-source GKE Agent Substrate targets millions of sandboxes, with 10× higher density than standard container runtimes and sub-500ms resume operations. The update matters to teams evaluating infrastructure for large fleets of isolated agent workloads.

What
• GKE Agent Substrate is an open-source runtime designed to run agentic workloads at higher density than standard container runtimes.
How
• It supports millions of sandboxes, sub-500ms resume operations, and over 500 suspend/resume activations per second, with kernel and network isolation.
Why it matters
• High-density sandboxes and fast resume operations target infrastructure needs as agentic workloads scale.
generates act… executes code observes LLM policy GPUs CPU sandboxes reward signal
The agentic RL loop runs policy-generated actions in isolated sandboxes and observes a reward signal. Sketched from the article's own text.

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