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validator: a testnet single GPU mode where the probe agent shares the card and may be swapped for a quantised build - #170

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BANADDA merged 3 commits into
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single-gpu-testnet
Oct 26, 2026
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BANADDA merged 3 commits into
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single-gpu-testnet

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@BANADDA BANADDA commented Oct 26, 2026

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Context compression required a second GPU for the probe agent, which a one card testnet validator cannot give it. New flags, also read from the environment: --judge-share-gpu (MT_JUDGE_SHARE_GPU=1) runs the probe agent on the same card at half its memory; --judge-model and --judge-revision (MT_JUDGE_MODEL, MT_JUDGE_REVISION) swap the probe agent for another repository, refused on any network but test; --slm-memory-share (MT_SLM_MEMORY_SHARE) caps the model under test. The container entrypoint demands gVisor only when the sandbox runtime is runsc, so MT_SANDBOX_RUNTIME=runc works on testnet. Documented in docs/validator_setup.md.

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BANADDA merged commit 0362188 into main Oct 26, 2026
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BANADDA deleted the single-gpu-testnet branch October 26, 2026 22:12
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