Radeon ROCm 1.9.1 vs. NVIDIA OpenCL Linux Plus RTX 2080 TensorFlow Benchmarks

[bridgman]

So the bandwidth measured by this test is not the actual memory bandwidth? And in that case what is the limiting factor here?

Correct - memory bandwidth on a Fury is ~512 GB/s, while bandwidth on a Vega 64 is a bit lower, ~2x the bandwidth of a 1070 (256 GB/s).

I think the limit here might be texture cache bandwidth but not 100% sure.

[coder]

So the bandwidth measured by this test is not the actual memory bandwidth? And in that case what is the limiting factor here?

It can't be measuring actual GDDR6 memory bandwidth, as those numbers are significantly higher than the nominal specs for the RTX parts. See:

https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units#GeForce_20_series