Graphic Processing Unit
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This document discusses graphics processing units (GPUs) and GPU rendering. It describes how GPUs assist CPUs in performing complex rendering calculations more quickly. The document outlines some of the latest and most powerful GPU models from AMD and Nvidia, such as the Radeon R9 295X2 and GeForce GTX Titan Z. It also discusses challenges in GPU rendering like realistic lighting simulations and high power consumption. GPU-accelerated computing is increasing performance across many applications by offloading compute-intensive tasks to thousands of GPU cores.
Graphic Processing Unit
- 1. GRAPHIC PROCESSING UNIT Presented by KamranAshraf 13-NTU-4009
- 3. CONTRIBUTORS Three main contributors to advancement: Intel AMD/ATI Nvidia
- 4. WHAT IS RENDERING Rendering is the process of generating an image from a 2D or 3D model by means of computer programs It is the process of add shading, color and lamination in order to create life-like images on a screen A GPU assists a CPU in performing complex rendering calculations If a scene is to look relatively realistic and predictable under virtual lighting, the rendering software should do it Rendering is also used to describe the process of calculating effects in a video editing program to produce final video output A variety of rendering techniques applied to a single 3D scene
- 5. WHAT IS GPU RENDERING? GPU rendering means, that there is used the power of GPU (Graphics card) for rendering, instead of CPU (processor). Conventional CPUs (Intel, AMD) didn't make such dramatic progress, like GPUs in last 10 years.
- 6. GPU RENDERING GPU rendering is definitely the future of rendering as one single GPU has the same power as the huge and expensive computer clusters with many CPUs GPU rendering is incredibly fast and less power hungry You will need less computers for the same performance Much CHEAPER
- 7. THE WORLD'S FASTEST GPU
- 8. THEWORLD'S FASTEST GPU The GTXTitan Z The Radeon R9 295X2
- 9. AMD’S R9 295X2 It joins two of its R9 290X GPUs onto a single board Max Resolution: 4096 x 2160, Support 5x Display Monitors Memory: 8GB dedicated Cores: Powered by 5,632 cores meaning 2,816 cores for each GPU The most advanced dual GPU liquid cooling system ever designed Ups the power consumption to a scarily large 500 watts Cost around $1500
- 10. NVIDIA GTXTITAN Z 5k resolutions supported:This GPU supports multi-monitors and a resolution upto 5k Dual GPU architecture:Two Kepler GK110 GPU’s inside,Titan Z generates the same power as if twoTitan’s were running Memory:The card will support a total of 12 GB dedicated memory i.e 6 GB for each GPU. CUDA cores:The GTXTitan Z is powered by 5,760 CUDA cores meaning 2,880 cores for each GPU. It won’t make much noise as compared to other powerful GPU’s Cost around $3000
- 11. CALCULATE IMAGE QUALITY USING GPU
- 12. IMAGE QUALITY CALCULATOR The University of Manitoba developed an Image Quality Calculator. This utility, which is a plugin for ImageJ, does a great job analyzing the quality (amount of noise)
- 13. COMPARING RESULTS The GPU (2688 CUDA cores) was 6.2 times faster than the CPU.
- 14. IMPACT OF GPU IN COMPUTING
- 15. GPU ACCELERATED COMPUTING GPU-accelerated computing is the use of aGPU together with a CPU to accelerate scientific, analytics, engineering, consumer, and enterprise applications. Pioneered by NVIDIA, GPU accelerators now power energy-efficient datacenters in government labs, universities, enterprises, and small-and-medium businesses around the world. GPUs are accelerating applications in platforms ranging from cars, to mobile phones and tablets, to drones and robots.
- 16. HOW ITWORKS Compute-intensive portions of the application are executed by the GPU The remainder of the code still runs on the CPU From a user's perspective, applications simply run significantly faster GPUs have thousands of cores to process parallel workloads efficiently
- 17. CHALLENGES
- 18. THE LIGHTNING CHALLENGE One of the most important aspects of creating convincing 3D visuals is implementing realistic lighting The challenge is not having an artist manually animate realistic-looking lighting, but to simulate how a light reacts with, and bounces off, multiple surfaces in real- time, otherwise known as path tracing In the film industry, path tracing is done offline, because the calculations required are simply too complex Unity global illumination worked on advanced lighting model which supported indirect lighting but it was very expensive so It's a technology that's not quite ready.
- 19. POWER CHALLENGES Biggest, most complex processors on the planet are being made The biggest challenge is no longer being able to build a fast GPU The biggest challenge is power as Graphics can consume a near infinite amount of horsepower We don't want to have to watercool everything, or have 19 fans and make things really loud.
- 20. ADVANCEMENTS
- 21. LATEST ADVANCEMENTS Nvidia's GameWorks technology Nvidia's GamesWorks is a set of visual effects, physics effects, and tools designed to give developers more options when it comes to a game's visuals. Effects like HBAO+ and FaceWorks are part of GameWorks. AO can account for the occlusion of light, creating non-uniform shadows that add depth to the scene. HBAO+ doubles the detail level of the AO effect, runs three times faster, and uses the latest DirectX 11 technologies. Nvidia's GameWorks is more copyrighted in nature. AMD's Mantle technology Mantle, allows console-like low-level access to the CPU and GPU. By removing some of the software layers of the operating system between the hardware and the software With the right programming developers are able to see an increase in performance AMD claims its Mantle API is open, and free to use
- 22. Thanks
Editor's Notes
- #9: Why brute force rendering? The way the brute force rendering works is by looking at the scene which needs to be rendered, then essentially hammering away at the scene by sampling different areas of the shot; calculation information, calculation ray information etc. This was once a very heavy task for older cumputers to deal with. However in the past 10 years computing power has increased substantially and as a result Brute force rendering has become a much more viable option.
- #10: Why brute force rendering? The way the brute force rendering works is by looking at the scene which needs to be rendered, then essentially hammering away at the scene by sampling different areas of the shot; calculation information, calculation ray information etc. This was once a very heavy task for older cumputers to deal with. However in the past 10 years computing power has increased substantially and as a result Brute force rendering has become a much more viable option.
- #19: Path tracing is a computer graphics Monte Carlo method of rendering images of three-dimensional scenes such that the global illumination is faithful to reality. Fundamentally, the algorithm is integrating over all the illuminance arriving to a single point on the surface of an object.