Overview / Usage

The "Interactive Volumetric Path Traced Cloudscape" interactive rendering demo delivers a large-scale volumetric cloudscape composed of VDB-formatted volumes. As part of the Intel® oneAPI Rendering Toolkit, the Intel® Open Volume Kernel Library accelerates volume computations and Intel® OSPRay delivers scalable rendering across multiple compute nodes. The application front-end is built on Intel® OSPRay Studio.

Intel® Open VKL can be used by any renderer to improve volume rendering capabilities and performance.

Intel® OSPRay provides a scalable and extensible rendering infrastructure, which can be used for render-preview and interactive applications to accelerate authoring and other artist or look development workflows.

Intel® OSPRay Studio provides a clean and simple application front end for test driving all of OSPRay’s bleeding-edge features.

Methodology / Approach

In this demo, we’ll show interactive rendering of a large-scale volumetric cloudscape, making use of Intel® oneAPI Rendering Toolkit.

This demo makes heavy use of three oneAPI Rendering Toolkit components:

• Intel® Open Volume Kernel Library: Supporting all volume computations used in the rendering.
• Intel® OSPRay: Providing the renderer itself, and supporting scalable, cluster-based rendering: in this case on a cluster of 10 compute nodes.
• Intel® OSPRay Studio: Providing a flexible application front-end for interacting with and manipulating the scene, and test driving the oneAPI Rendering Toolkit's latest features.

Technologies Used

• oneAPI Rendering Toolkit
  • Intel® Open Volume Kernel Library
  • Intel® OSPRay
  • Intel® OSPRay Studio
• HPC 10 Node Cluster
  • Compute Nodes
    • Dual Socket Intel® Xeon® Platinum 8280L Processor; 28 cores / 56 threads per CPU
  • Head Node
    • Dual Socket Intel® Xeon® Platinum 8260 Processor; 24 cores / 48 threads per CPU
  • Memory
    • 12 x 256 GB Intel® Optane (3TB) per node
    • 12 x 32GB DDR (384GB) per node

Other links

• Intel® OSPRay
• Intel® oneAPI Rendering Toolkit
• Intel® Open Volume Kernel Library

Collaborators