Interactive Volumetric Path Traced Cloudscape – Featuring Intel® Open Volume Kernel Library, Intel® OSPRay, and Intel® OSPRay Studio

Donna Nemshick

Allentown, Pennsylvania

3 0

The "Interactive Volumetric Path Traced Cloudscape" interactive rendering demo delivers a large-scale volumetric cloudscape composed of VDB-formatted volumes. ...learn more

Project status: Published/In Market

oneAPI, HPC, Graphics and Media

Groups
SIGGRAPH 2020

Intel Technologies
oneAPI, Optane

Links [3]

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