Out of Memory error when trying to load the model

So when I trained the model initially with coverage off for 500k iterations, now what i would like to do is use this same model and further fine tune it on the model for 500k iterations. What i've seen tho is the moment I mention the model_file_path the model crashes and gives an OOM error even though I have a tonne of memory. The model works just fine if i dont specify the model file path