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Messages - Stefan

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2761
3D-Tech News Around The Web / Dominik Göddeke -- GPGPU Tutorials
« on: July 18, 2009, 06:16:37 AM »
GPU Computing with NVIDIA CUDA

This half-day tutorial was held twice so far:

    * University of Freiburg and Jedox AG, Freiburg, Germany (May 2009)
    * TU Dortmund, Sonderforschungsbereich 708, Germany (June 2009)

Slides

Many thanks to Mark Harris and Gregory Ruetsch for letting me base these talks on their material.

    * Part 0: Welcome
    * Part 1: A Short History of GPU Computing
    * Part 2: Introduction to CUDA
    * Part 3: Optimising CUDA Performance


2763
3D-Tech News Around The Web / Fluid Simulation for Video Games
« on: July 17, 2009, 07:12:37 AM »
Quote
Introduction to Fluid Dynamics
Video games appeal to our desire to explore and interact with our environment, and adding real-world phenomena-such as fluid motion-allows game developers to create immersive and fun virtual worlds. Recently, physical simulations have become more realistic, but the simulations have largely been limited to rigid bodies. Pervasive simulations of continuous media like cloth and fluids remain uncommon, largely because fluid dynamics entail conceptual and computational challenges that make simulating fluids difficult. This article begins a three-part series that explains fluid dynamics and its simulation techniques. The article culminates in an example of a fluid simulation algorithm suitable for use in a video game.

Read full story at Intel.

2764
3D-Tech News Around The Web / Bullet 2.75 RC6 available
« on: July 16, 2009, 06:38:34 PM »
"Bullet 3D Game Multiphysics Library provides state of the art collision detection, soft body and rigid body dynamics."

2765
Works fine without 3D stereo glasses.
If you want crowds of zombies jump right into your face, goto NZONE now.


2766
3D-Tech News Around The Web / AMD HPC Case Studies
« on: July 16, 2009, 04:35:11 PM »
Quote
» Car-Parrinello Molecular Dynamics (CPMD)
» The Weather Research and Forecast (WRF) Model
» HPC Advisory Council Brings Cluster Computing to Torrey Pines High School
» NWChem
» The Massively Parallel Quantum Chemistry Program (MPQC)
» ANSYS FLUENT
» STAR-CCM+ and STAR-CD
» The Fifth-Generation Mesoscale Model (MM5)
» Molecular Dynamics (NAMD)
» Automotive Crash Simulation (LS-DYNA)
» Oil and Gas Reservoir Simulation (Eclipse)

Read full story at AMD.

2767
Quote
RecView is a program for tomographic reconstruction with graphical user interfaces. It's consisted of about 9,000 lines of originally-written source codes in C++, CUDA C, x86 and x64 machine languages including SIMD instructions. RecView is developed for processing tomographic data obtained at the BL20B2, BL20XU, and BL47XU beamlines of the synchrotron radiation facility SPring-8.

Three-dimensional structural analysis by SR computed tomography is performed by recording two-dimensional radiographs. Then the three-dimensional structure is determined by the convolution back-projection method. This reconstruction calculation is repeated for each tomographic slice, giving the three-dimensional structure. Therefore, the resolution in the tomographic slice should be affected by the reconstruction calculation. We examined the resolutions in the tomographic slice plane and perpendicular to it from modulation transfer functions. The through-plane resolution perpendicular to the tomographic slice corresponded to the spatial resolution of two-dimensional radiographs. In contrast, the in-plane resolution within the slice was approximately 1.5-times larger than the through-plane resolution. Real-space interpolation was performed prior to the tomographic reconstruction, giving an improved in-plane resolution.

RecView is available free of charge for all researchers.

Get it from Tokai University

P.S.
if s.o. has a compatible sample data file, gimme a note.

2768
Quote
Tech-X, yesterday, announced the latest release of their GPULib scientific library.  With this release, v1.2.0, they have included substational refactoring of and enhancements to the MATLAB interface.  This release also provides additional GPU computing capability for those MATLAB users leveraging the computing capacity of the GPU.

Read full story at InsideHPC.

2769
Quote
Features
     
2D and 3D visuals for both something flat and something exciting
Highly dynamic image panning, zooming and rotation    
Uses your 3D rendering hardware for speed and accuracy

Get it from Planet Imagina.

2770
Quote
Fixed Issues–Windows Vista 32-bit
Single-GPU Fixed Issues
•Quadro FX 3700/1700: 3ds max–frame rate slows down when navigating 
objects using four‐viewport layout. 
Fixed Issues–Windows Vista 64-bit
Single-GPU Fixed Issues
•Quadro FX 4800 X2, Quadro FX 3500: 3ds max–DirectX viewport 
initialization fails. 
•Quadro FX 1100/550: Random driver crashes occur when opening and 
closing multiple OpenGL contexts.
Fixed Issues–Windows Vista 32-bit
Single-GPU Fixed Issues
•Quadro FX cards:VISI 17–the application crashes when using OpenGL 
graphics engine and with “Use VBO” turned on.
Multi-GPU Fixed Issues
•[SLI]: Maya 2008–horizontal pixels are missing from drawings in the 
certification test.  

Fixed Issues–Windows Vista 64-bit
Single-GPU Fixed Issues
• Applications crash in VirtualAlloc in a memory segment which was already 
reserved. 

Get it from NVIDIA

2771
Quote
PC Wizard - History Notes
Copyright (C) 1996-2009 Laurent KUTIL & Franck DELATTRE
--------------------------------------------------------

2009.1.88
--------------------------------------------------------

- nVidia CUDA information support
- nVidia CUDA benchmarks support

Note:
you must put a copy of cudart.dll into program folder (v2.2 works fine)


2772
Quote
What’s New in Silverlight 3?

Fully supported by Visual Studio and Expression Blend, highlights of new features and functionality of Silverlight 3 include: major media enhancements, out of browser support allowing Web applications to work on the desktop; significant graphics improvements including 3D graphics support, GPU acceleration and H.264 video support; and many features to improve RIA development productivity. Also, in order to fully integrate all the .NET developer tools, Visual Studio 2010 will support a fully editable and interactive designer for Silverlight.

Get it from Microsoft.

2773
Quote
Available with CUDA support since April, the SimHD plug-in for TotalMedia Theatre can now also play nice with AMD's GPGPU technology, ATI Stream. With the extended functionality, users that have Stream-enabled graphics cards will 'see' their GPU being used by the TotalMedia Theatre media player for upscaling standard-definition video to near high-definition quality.

"The complicated calculation conducted during real time upscaling has always been challenging," said George Tang, ArcSoft Vice President and General Manager of Video and Home Entertainment Group. "With ATI Stream, SimHD is able to take advantage of GPGPU, performs much faster during playback while presenting the ultimate video quality to users."

Source: TCM

2774
Quote
We've just released the CUDA C Programming Best Practices Guide. This guide is designed to help developers programming for the CUDA architecture using C with CUDA extensions implement high performance parallel algorithms and understand best practices for GPU Computing. Chapters on the following topics and more are included in the guide:

    * Introduction to Parallel Computing with CUDA
    * Performance Metrics
    * Memory Optimizations
    * Execution Configuration Optimizations
    * Instruction Optimizations
    * Control Flow
    * Debugging
    * Numerical Accuracy and Precision
    * Performance Optimization Strategies

This will be included with the 2.3 toolkit, but we decided to release it now because it's definitely worthwhile reading for any CUDA C developer (a lot of collected internal wisdom on proven optimization strategies, for example). Feel free to post any questions or comments in this thread.

2775
Quote
The concept of GPGPU, using your graphics board for general purpose processing, has shown promise for so long it's great to finally see that potential coming to light, and whatever your thoughts about NVIDIA's CUDA technology there can be no doubt that the GPU giant has built up an impressive array of video processing applications which make use of the company's graphics boards to accelerate performance and make new features available.

Read full story at EliteBastards.

2776
Quote
AMD's Developer Relations Chief Richard Huddy demonstrated the abilities of the first DirectX 11 graphics card from the Evergreen series. He is sure that the DX11 graphics cards will be a pleasant surprise when they are released later this year.

Read full story at PCGH.

2777
Contains 6 articles:   
Accelerating Unstructured Volume Rendering with Joint Bilateral Upsampling
Implementing As-Rigid-As-Possible Shape Manipulation and Surface Flattening
GPU-Based Neighbor-Search Algorithm for Particle Simulations
Visualizing High Dynamic Range Images in a Web Browser
Efficient Construction of Perpendicular Vectors without Branching
Two Tricks for the Price of One: Linear Filters and Their Transposes


Download from AKPeters, all documents are named fulltext.pdf, have fun with renaming  ::)

2778
3D-Tech News Around The Web / Humus' Particle trimmer updated
« on: July 08, 2009, 12:23:57 PM »
Quote
I have made another update to the particle trimmer. Previous revisions produced somewhat inaccurate results since it didn't take texture filtering into account. For most textures it doesn't matter much, but for low-res textures it can be a big deal. In this revision I've added a subpixel precision mode to deal with this problem (default is a 16x16 split of the area between four texels). As a result a lot more points are added to the convex hull and it now pretty much always has to apply the reduction to 50 vertices. If anyone has an idea of how to do the convex hull reduction other than by brute force I'd like to know. I haven't been able to google up any algorithms for that.

I have also made it handle edge and corner cases correctly.

Source: Humus

2779
3D-Tech News Around The Web / NVIDIA SLI Profile Patch
« on: July 08, 2009, 12:08:54 PM »
Officially now at NVIDIA.
Make sure you need this one and not that from EVGA, i.e. check the list of supported games.

2780
Quote
On June 11th news spread quickly that Maingear CEO Wallace Santos had posted a blog update stating they had received AMDs TWKR CPU. Discussion forums across the net went into overdrive due to the realisation that this was actually an unannounced product. What could it actually be and when would it be available? A few days passed and more information started to leak out and finally we had a soft launch of the TWKR 42 Black Edition last week.

AMD will not be selling this part but is giving a few samples to press, enthusiast users and competition winners. We managed to get hold of a sample for a day’s worth of testing and in this article we will look at what the CPU actually is and how it compares in overclocking to the high end Phenom 2 X4 955 Black Edition.

Read full story at DriverHeaven.

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