Performance 40% higher than traditional methods, AMD demonstrates Microsoft working graph effect on RX 7900 XTX graphics card

News from this site on June 21, news from this site on June 21, AMD used Radeon RX 7900 XTX graphics card at the GDC 2024 conference to run and demonstrate Microsoft's Work Graphs (Work Graphs), indicating that its performance was improved compared to the traditional ExecuteIndirect method 40%.

Work graph is an important feature that can improve the efficiency of GPU driver rendering, thereby reducing the task burden on the CPU.

To put it simply, part of the work of rendering images is currently done by the CPU and part by the GPU. But sometimes, the CPU spends too much time deciding what the GPU should do next. The work graph is a system that helps the CPU and GPU work together more efficiently.

This technology allows the CPU to plan ahead and organize tasks for the GPU, allowing the GPU to generate work tasks for itself in a timely manner during rendering. This way, the CPU can plan tasks ahead of time, and the GPU doesn't have to wait for another task to be submitted.

Testing configuration with Ryzen 7 5800X CPU, 32GB DDR4 memory and Radeon RX 7900 XTX, some statistics from AMD and Coburg University are as follows:

6600 draw calls per frame (after coalescing)

per Frames 13 million triangles

200,000 work items

37 nodes and 9 grid nodes

< 200 MiB of work graph backup storage memory

AMD’s demo shows the potential of work graphs to accelerate rendering workloads . Work graphs and mesh nodes are important new features of the Microsoft DirectX API, and all major GPU manufacturers are currently working to support these features in their drivers.

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