What are possible reasons for BUS errors in DDP?

distributed
1

Hi,

What could be possible reasons for encountering a BUS error in DDP? My guess would be an OOM error but as far as I can see RAM should be sufficient for the task. Could the shuffling of the data play a role when creating a torch dataloader? This is my implementation:

data = DataLoader(
        dataset,
        batch_size=batch_size,
        pin_memory=True,
        shuffle=False,
        num_workers=0,
        sampler=DistributedSampler(dataset)
    )