Is data load at once?memory usage is linear to pass number/

when i set pass number to 10,the memory usage seems to overflowWhen i set low pass number，everything goes ok.
The model I use is FM.

No source file, test, or entry point is identified. Start by reproducing the FM model's data load with pass number 10 and with a low pass number, recording memory usage and the relevant loader path. Done means the cause of memory growth is identified and the observed overflow is prevented or clearly documented.

Written by the indexing model from the issue text.