AI Coding Bottleneck Shifts to Test Suites: Dev Wants 256GB RAM and 40 Cores Per Project

cjimti · x · 2026-10-11

Developer cjimti observes that in AI-assisted coding, the biggest bottleneck is no longer writing code but running test suites — his M5 Pro can't keep up. He estimates needing remote sandboxes with at least 256GB RAM and 40 cores per project, with 3-4 such nodes to keep working around the clock; with 4-8, mutation testing could become a legitimate gate on every push.

It's a window into how parallel agent workflows make CPU and memory the scarce resource, replacing local machines with beefy remote sandboxes.

Related event: AI Coding's New Bottleneck: Slow Test Suites Demand Remote Sandboxes(2 posts)→

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