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Optimizing DX12/DXR GPU Workloads using Nsight Graphics: GPU Trace and the Peak-Performance-Percentage (P3) Method (Presented by NVIDIA)

Louis Bavoil (Principal Developer Technology Engineer, NVIDIA)

Location: Room 205, South Hall

Date: Friday, March 22

Time: 10:00am - 11:00am

Pass Type: All Access, GDC Conference + Summits, GDC Conference, GDC Summits, Expo Plus, Audio Conference + Tutorial, Indie Games Summit - Get your pass now!

Topic: Programming

Format: Sponsored Session

Vault Recording: Video

Audience Level: All

This talk shows how Nsight GPU Trace can be used to determine the performance limiters of any DX12 workload on NVIDIA Turing GPUs, and improve performance by applying architecture-aware optimizations. Because the tool captures all of its metrics in a single pass (no frame replay), it can be used on DX12 frames that use asynchronous compute or copy queues. After recaping what the Peak-Performance-Percentage Method is, the talk shows how it can be applied to unlock perf speedups on various workloads, including: compute shaders with large thread-group sizes, pixel shaders with out-of-order completion, ray-tracing BVH updates and ray-tracing denoisers.

Takeaway

How to use Nsight GPU Trace to optimize any DX12 workload (including DXR examples)

Intended Audience

Graphics Programmers