Unverified50% confidenceDecision RuleExact time

When checking for yourself whether a model run on a Mac truly fits, you should look at swap rather than only at footprint: as long as swap grows during the task run, it does not fit no matter how good the footprint looks; at the same time you should refer to the system-level free memory percentage (kern.memorystatus_level).

1

Sources

50%

Confidence

Long-term

Relevance

10/13/2026

First Seen

Sources

The PyTorch Mac Memory Illusion: Why Process Footprint Plummets After .to("cpu")

Related Entities

swapconcept kern.memorystatus_levelconcept phys_footprintconcept

Related Claims

UnverifiedOn low-memory VPS instances, it is recommended to set the swappiness parameter to 60-80 so that the kernel more aggressively utilizes swap to relieve memory pressure.67% similar UnverifiedWhen using stageload's release(module) to move parameters and buffers to the meta device and running Qwen-Image-2.1 in a stage-by-stage 'load at start, release at end' manner (the 16.3 GB text encoder and the 13.3 GB transformer loaded only one at a time), the peak on the same Mac dropped to 19.0 GB, and swap did not grow in either run.63% similar

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