Alongside the big Radeon Software Crimson ReLive 17.7.2 release, AMD pushed out a new developer tool to profile performance on AMD GPUs. First and foremost, it’s only designed to work with the newer graphics APIs, DirectX 12 and Vulkan, although it supports many operating systems: Windows 7, Windows 10, and Linux (Ubuntu 16.04). It doesn’t (yet) support Vega, so you will need to have a 400-, 500-, or Fury series GPU. I expect that will change in the near future, though.
So what does it do? These new graphics APIs are low-level, and there’s a lot going on within a single frame. Other tools exist to debug thing like “which draw call is painting a white blotch over part of my frame”, with AMD recommending RenderDoc. Radeon GPU Profiler is more for things like “did I feed my GPU enough tasks to mask global memory access latency?” or “what draw call took the longest to process?” Now that a lot of this is in the hands of game developers, AMD wants them to have the tools to efficiently load their GPUs.
While the software is freely available, it’s not open source. (You will see a “Source code” link in the release section of GitHub, but it’s just a Readme.)