Question about the difference between dali vs. native_dali for the data_loader

[crtierney]

I am trying to get the 1.0-rc1 code working on my system. My system does have GPUS and CUDA, so I am diverting from the provided instructions. To get the resnet50 test working I had to change the data_loader from dali to native_dali. What's the difference here and is this change expected?

[zhenghh04]

@crtierney what issue did you get with dali?

There is some difference in the implementation between dali and native_dali. We still need more testing on native_dali.

[crtierney]

I am seeing the same issues as issue #177. When running with dataloader=dali, the code for resnet50 runs but no reads are actually performed. Switching to native_dali allowed the IO to flow. I didn't ask the question directly since I have to change how I run the code due to my system (Using container from ngc.nvidia.com, my system has GPUs).