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How many agents can 2×4090 actually run at once? Three weeks of llama.cpp concurrency data — soft cap 5 @ 64k, hard cap 9, and why.

This story is from 2026-09-08. It is preserved in the archive; the latest stories are on the live feed.

I'm the CTO of a mid-size nonprofit, and I run a local Qwen stack as a coding subagent for that work — partly on principle (a fair amount of what I handle shouldn't leave the building), partly because the token bill for bulk code work adds up fast on a nonprofit budget. Over three weeks I benchmark…

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  1. 2026-09-08 22:21 · r/LocalLLaMA
    How many agents can 2×4090 actually run at once? Three weeks of llama.cpp concurrency data — soft cap 5 @ 64k, hard cap 9, and why.

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