GPUPerfAPI v3.7 includes Radeon™ RX 6000 support and new raytracing counters

We are pleased to announce the release of GPUPerfAPI v3.7 which includes support for our long-awaited Radeon™ RX 6000 series GPUs.

The GPU Performance API (GPUPerfAPI, or GPA) is a powerful library, providing access to GPU Performance Counters. It can help analyze the performance and execution characteristics of applications using a Radeon™ GPU.

We will now introduce the new features you will find in v3.7, released November 2020.

GPUPerfAPI

GPUPerfAPI provides access to GPU Performance Counters. It analyzes performance and execution characteristics of applications using a Radeon™ GPU.

New raytracing counters for DirectX® Raytracing

In this release, we have added four new counters for DirectX® Raytracing (DXR) to analyze raytracing workloads.

• RayTriTests, and RayBoxTests: These counters collect the number of ray intersections for triangles and boxes, respectively.
• TotalRayTests: This counter collects the aggregated number of ray-box, and ray-triangle intersection tests.
• RayTestsPerWave: This counter collects ray intersection test count at more granular level – per wave.

New scalar and instruction cache counters

We have also included new memory cache counters for analyzing scalar and instruction cache activity of measured workloads in this release. We are planning to add these counters in a future RenderDoc1 release as well.

• InstCacheHit, InstCacheRequestCount, InstCacheHitCount, InstCacheMissCount – Collects instruction cache request, hit, and miss counts.
• ScalarCacheHit, ScalarCacheRequestCount, ScalarCacheHitCount, ScalarCacheMissCount – Collects scalar (i.e. constant) cache request, hit, and miss counts.

New raytracing High-Frequency counters in Microsoft® PIX2

In addition to new discrete counters, we are adding High-Frequency counters for DirectX® Raytracing workloads as part of the AMD PIX Plugin in upcoming releases of Microsoft® PIX.

1: RenderDoc is a free MIT licensed, stand-alone graphics debugger tool. See https://renderdoc.org/ for more information and the latest builds.

2: Microsoft® PIX  a performance and debugging tool from Microsoft®. See https://devblogs.microsoft.com/pix/ for more information and the latest builds.

Find out more

GPUPerfAPI

GPUPerfAPI provides access to GPU Performance Counters. It analyzes performance and execution characteristics of applications using a Radeon™ GPU.

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