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A 25M-step Mario PPO run went from ~2 days of CPU emulation to 2.5 hours on a GTX 1050 Ti (GPU)

This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.

I was learning PPO and wanted Super Mario Bros as the project. Every run was limited by the emulator, not the learner. nes-py does about 132 env-steps/s on a core, so a 25M-step run is over two days of just stepping the console. CuLE is Atari only so Mario wasn't an option. So I moved the emulator…

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  1. 2026-09-01 20:17 · r/reinforcementlearning
    A 25M-step Mario PPO run went from ~2 days of CPU emulation to 2.5 hours on a GTX 1050 Ti (GPU)

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