Help for parameter configuration in case of memory problems

[mkirkove]

Dir all.
I would like some advice to understand how to configure the following YOLOv4 parameters:

• 'batch size'
• 'subdivisions'
• 'random'
  Tips based on available memory are as follows.
  For parameter 'batch size' = 64, the parameter 'subdivisions' can be set as
• 8 for 32 GB available GPU memory
• 16 for 16-24 GB available GPU memory
• 32 for 8-12 GB available GPU memory
  Then, in case of GPU memory problems, the parameter 'random' in all 'yolo' blocks must be set at 1.34 (it is 1 by default).
  I have two questions:
• can you explain the meaning of this parameter 'random'?
• I tried the following settings:
• batch size = 64, subdivisions = 32, random = 1
• batch size = 64, subdivisions = 16, random = 1
  I have GPU memory problems for the first setting, not for the second. This is in disagreement with what is recommended. I do not understand the meaning of the parameter 'subdivisions'.