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Why I thought this was an easy problem to solve I do not know. CPU checkpoint/restart has come a long way with DMTCP for serial and parallel jobs (including multi-host).

A good overview of the history of GPU checkpoint/restart efforts can be found at this presentation

• Transparent Checkpoint and Restart Technology for CUDA® applications

An excellent in depth explanation can be found in this article

• arXiv:2008.10596v1 [cs.DC] 24 Aug 2020CRAC: Checkpoint-Restart Architecture for CUDA with Streamsand UVM

• CRAC git site: https://github.com/DMTCP-CRAC/CRAC-early-development

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