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GPGPU Applications for Hydrological and Atmospheric Simulations and - - PowerPoint PPT Presentation
GPGPU Applications for Hydrological and Atmospheric Simulations and - - PowerPoint PPT Presentation
GPGPU Applications for Hydrological and Atmospheric Simulations and Visualizations on the Web Ibrahim Demir Big Data We are collecting and generating data on a petabyte scale (1Pb = 1,000 Tb = 1M Gb) Data contains valuable information
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JS x 100 - Multicore CPU/GPU Big Data Analytics Desktop-like Games Scientific Visualization Image / Video Processing Augmented / Immersive Reality
NVIDIA Titan X – 5760 Cuda Cores 8 TFLOPs compute power
Web 3.0 and GPU
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CPU-based Computations
JavaScript (parallel / multi-core) SIMD.js ASM.js
GPU-based Computations
WebCL WebGL
Computing on the Web
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Pure JavaScript 50-100x speed improvement Parallel JavaScript Web Workers / Multi-core CPU Background Thread / window-less tab Distributed volunteer computing applications on the client side
JavaScript
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SIMD stands for Single Instruction Multiple Data, and for performing
- perations on multiple data elements, in parallel.
SIMD.js is a new API being developed by Intel, Google, and Mozilla. One
- f the uses of SIMD is to accelerate processing of large arrays of data.
SIMD.js will accelerate a wide range of demanding applications today, including games, video and audio manipulation, scientific simulations, and more, on the web.
SIMD.js
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ASM.JS is a highly optimized subset of JS designed to provide near-native application performance in a browser, and well suited for any computationally intensive task.
ASM.js
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WebCL (Web Computing Language) is a JavaScript binding to OpenCL for parallel computing within any compatible web browser without plug-ins. WebCL allows web applications to actualize speed with multi-core CPUs and GPUs; this intends to make computationally intensive programs feasible in the browser, e.g. physics engines, canvas element and video editing. WebCL is designed and maintained by the Khronos Group. The completed specification for WebCL 1.0 was released on March 19, 2014.
WebCL
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WebGL is a powerful part of the new HTML5 standard, bringing graphics card capabilities directly to the browser. To get WebGL to perform scientific calculations, simply trick GPU by pretending that it is rendering graphics. GPU executes Fragment Shader for every pixel of output image after geometry rasterization to calculate resulting colors. For GPGPU calculations, put your functions here, and calculate a new value of a simulation cell represented by a texture pixel.
WebGL
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GPGPU
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The GPGPU is General Purpose computing on GPUs. GPGPU operates by using graphics methods and primitives to perform general purpose computations. For example, textures are used as memory, while shaders are programmed to be used as kernels, which are computed on each graphics primitive.
What is GPGPU?
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WATERSHED DELINEATION 40m grid cells – 90m res. 150mb terrain raster data converted to 5mb custom image data 9 directions
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WATERSHED DELINEATION
INSTANT OFFLINE
Video https://www.youtube.com/watch?v=lVMN76sdCrA
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WATERSHED DELINEATION
WEBGL SHADER
40m grid cells – 90m resolution 150mb terrain raster data converted to 5mb custom image data 9 directions Dynamic texture size Data in multi color channels Multi level processing in each iteration
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WATERSHED DELINEATION
WEBGL SHADER
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FLOOD VISUALIZER
- Reflections and refractions
- Ambient occlusion
- Height-field water simulation
- Shadows
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FLOOD VISUALIZER
IMMERSIVE REALISTIC
Video https://www.youtube.com/watch?v=vX8UNdM44_c
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DYNAMIC DATA HIGH-RESOLUTION
FLOW VISUALIZATION
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DYNAMIC DATA HIGH-RESOLUTION
FLOW VISUALIZATION
Video https://www.youtube.com/watch?v=PWY4z-7hOuQ
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Dynamic Objects Static Objects Levee/Dam River System
GAME PHYSICS VIRTUAL REALITY
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Dynamic Objects Static Objects Levee/Dam River System
GAME PHYSICS VIRTUAL REALITY
Video https://www.youtube.com/watch?v=DXrBkjr7nec
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Webcam Marker Augmented Projection
AUGMENTED REALITY MARKER DETECTION
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Augmented Projection Table Marker
AUGMENTED REALITY MARKER DETECTION
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Augmented Projection Table Marker
AUGMENTED REALITY MARKER DETECTION
Video https://www.youtube.com/watch?v=eHgM_0rw1bY
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Distorted Projection of Scene
IMMERSIVE REALITY HEADS-UP DISPLAY
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Distorted Projection of Scene
IMMERSIVE REALITY HEADS-UP DISPLAY
Video https://www.youtube.com/watch?v=tY9QaDHnyAU
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Controls and Interaction
Motion Tracking Gesture Tracking Remote Interaction
GESTURE CONTROLS MOTION TRACKING
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Large Scale Geospatial Data Visualization
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FLOOD MAP FLIGHT SIMULATOR
3-DIMENSIONAL REMOTE INTERACTION
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FLOOD MAP FLIGHT SIMULATOR
3-D ENGAGING REMOTE INTERACTION
Video https://www.youtube.com/watch?v=6ZzLT_8U6fk
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Rainfall Maps
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550 hours (2200 steps) of data
RAINFALL & RIVER DRAINAGE 3D PERSPECTIVE VIEW
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550 hours (2200 steps) of data
RAINFALL & RIVER DRAINAGE 3D PERSPECTIVE VIEW
Video https://www.youtube.com/watch?v=FhmMAzyd7fI
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RAINFALL PRODUCT DATA BROWSER SPECIAL GRID WEBGL + GPU
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http://ifis.iowafloodcenter.org
Iowa Flood Information System
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