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Messages - Stefan

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3D-Tech News Around The Web / ATI GPUPerfAPI 2.3 available
« on: June 04, 2010, 10:38:55 PM »
GPUPerfAPI is AMD's library for accessing GPU performance counters on ATI Radeon graphics cards. It is used by GPU PerfStudio 2 and the ATI Stream Profiler and is now available to third party developers who wish to incorporate it within their own applications. GPUPerfAPI supports DirectX10, DirectX11, OpenGL, and OpenCL applications.

Version 2.3 (6/4/10)

    * Supports DirectX10, DirectX11, OpenGL on ATI Radeon 2000 series and newer.
    * Supports OpenCL on ATI Radeon 4000 series and newer.
    * Provides derived counters based on raw HW performance counters.
    * Manages memory automatically - no allocations required.
    * Requires ATI Catalyst driver 10.1 or later.

GPUPerfAPI User Guide (pdf)

GPUPerfAPI v2.3 (1.8MB)

With every major release of thinkingParticles new features are introduced, extending the power and flexibility of thinkingParticles by a magnitude, as compared to its predecessor. Release 4 represents a milestone in advancing the feature set.

Full news here

3D-Tech News Around The Web / ComputeMark 2 finally released
« on: June 04, 2010, 06:09:41 PM »
Today the ComputeMark team has released new version of ComputeMark (DirectX 11 Compute Shade benchmark) with tons of new features - new demos, presets, website and more...

Link 1: Download ComputeMark v2.0
Link 2: Download ComputeMark v2.0

Gallery at VR-Zone

Thermalright demonstrates their upcoming fan at Computex.
PCGH noticed Furmark was running for more than 6 hours.

In this class, we will introduce OpenCL™. We start with an overview of GPU compute since the desire to take advantage of modern GPU computational power in general applications was a main motivator in the development of OpenCL™. The discussion includes some of the early APIs developed to harness the increasing programmable computational power available in modern graphics processors.

We then introduce the anatomy and programming model of OpenCL™ and take you through some of the highlights of installing the ATI Stream SDK v2 which includes support for OpenCL™ 1.0 on x86 CPUs and AMD GPUs. Then, the practical portions of the OpenCL™ runtime and kernel specifications are discussed in detail.

At the end, we discussion optimization tips to help you avoid common pitfalls when coding your applications in OpenCL™. For students who may have existing code written for the proprietary interface, CUDA, we discuss the easy steps involved in porting that code to OpenCL™.

3D-Tech News Around The Web / OpenCL 3D Laboratory & tutorials
« on: June 02, 2010, 07:48:20 PM »
Download the free 3D Laboratory, which allows interation by using the WiiMote and also stereoscopic visualization (cinema 3D-like), creation of 3D models from mathematical equations and much more.

NVIDIA organizes each year with key customers and partners around a meeting of its professional products.

Full story at 3d-test in french - english translation

3D-Tech News Around The Web / OpenCL Code Generator Announced
« on: June 02, 2010, 04:10:07 PM »
CAPS, a software company that focuses on manycore development, has announced an OpenCL code generator within the just-released 2.3 version of its HMPP directive-based hybrid compiler.

The CUDA back-end generator has been enhanced with Fermi capabilities and this release brings support for more native compilers with Intel ifort/icc, GNU gcc/gfortran and PGI pgcc/pgfort compilers, enabling developers to freely use their favorite compiler with HMPP 2.3.

Based on GPU programming and tuning directives, HMPP offers an incremental programming model that allows developers with different levels of expertise to fully exploit GPU hardware accelerators in their legacy code.

The OpenCL back-end expands the portfolio of targets supported by HMPP to the AMD ATI GPUs. The OpenCL version of HMPP fully supports AMD and NVIDIA GPU compute processors, bringing to users a wider set of hybrid platforms they can execute their applications on. Recently released, the NVIDIA Tesla 200-series GPUs based on the "Fermi" codename CUDA architecture is also supported by HMPP 2.3.

Source DDJ

In this work, we evaluate performance of a real-world image processing application that uses a cross-correlation algorithm to compare a given image with a reference one. The algorithm processes individual images represented as 2-dimensional matrices of single-precision floating-point values using O(n4) operations involving dot-products and additions. We implement this algorithm on a nVidia GTX 285 GPU using CUDA, and also parallelize it for the Intel Xeon (Nehalem) and IBM Power7 processors, using both manual and automatic techniques. Pthreads and OpenMP with SSE and VSX vector intrinsics are used for the manually parallelized version, while a state-of-the-art optimization framework based on the polyhedral model is used for automatic compiler parallelization and optimization. The performance of this algorithm on the nVidia GPU suffers from: (1) a smaller shared memory, (2) unaligned device memory access patterns, (3) expensive atomic operations, and (4) weaker single-thread performance. On commodity multi-core processors, the application dataset is small enough to fit in caches, and when parallelized using a combination of task and short-vector data parallelism (via SSE/VSX) or through fully automatic optimization from the compiler, the application matches or beats the performance of the GPU version. The primary reasons for better multi-core performance include larger and faster caches, higher clock frequency, higher on-chip memory bandwidth, and better compiler optimization and support for parallelization. The best performing versions on the Power7, Nehalem, and GTX 285 run in 1.02s, 1.82s, and 1.75s, respectively. These results conclusively demonstrate that, under certain conditions, it is possible for a FLOP-intensive structured application running on a multi-core processor to match or even beat the performance of an equivalent GPU version.

Download whitepaper from IBM


3D-Tech News Around The Web / Afterburner 1.6.0 Beta 6
« on: May 31, 2010, 03:57:13 PM »
Download at Guru3D

[Changelog for Afterburner 1.6.0 Beta 6]
- Added voltage control for one more MSI N240GT Low Profile graphics card version
- Added initial NVIDIA GeForce GTX 465 series graphics cards support
- Changed marketing name for MSI R5670-PD512 in hardware database
- Core clock is now used as primary overclocking domain instead of shader clock on GeForce GTX 400
- Unlocked memory downclocking ability on GeForce GTX 400 series
- Default core voltages for NVIDIA GeForce GTX 400 series cards are no longer hardcoded into the database. Now MSI Afterburner uses new NVIDIA driver API to read variable default fused voltages on GeForce GTX 400 series graphics cards. Please take a note that new API reqires updated release 256 drivers, which are not available to public yet. MSI Afterburner will not affect core voltage at all when restoring defaults under curretnly available drivers
- Upper limit for core voltage slider on NVIDIA GeForce GTX 400 series graphics cards has been upped to 1213mV. Please take a note that regular GTX 400 cards will not allow you to go beyond the reference voltage limits (1087mV for GTX 470 and 1138mV for GTX 480) until unlocked BIOS is flashed
- Fixed <Link> button state saving/restoring issue on old NVIDIA cards caused
by introducing Fermi family support
- MSI On-Screen Display server has been upgraded to version 3.7.1. New server improves On-Screen Display 3D rendering mode compatibility with Source engine based games and Star Trek Online and contains updated profiles list

[Changelog for Kombustor 1.08]
- New: added the GPU voltage in the GPU monitoring zone.
- Change: now GPUs indexing follows the same indexing scheme than Afterburner.
- Change: added name of the graphics card in temperature graphs.
- Change: removed the auto-start of Afterburner.
- Bugfix: the benchmarking params group was still grayed.
- Minor bugfixes and changes.

3D-Tech News Around The Web / Intel - Advanced Rendering Techniques
« on: May 29, 2010, 10:09:44 AM »
This article goes further into the details of the varying procedures associated with rendering in Autodesk* Softimage*. Rendering is as nuanced a task as lighting is and incorporates many of the principles covered in previous articles. You don't want to spend hours of effort creating detailed models and precise animation only to create substandard imagery in the final output of your scene, and there are many interrelated parameters and options to consider in this phase of scene creation. As with lighting, rendering is often one of the least-understood aspects of 3D imaging, but it's critical to achieving high-quality animations.

The ATI Catalyst 10.5a Hotfix provides resolution for the following issue:

    * Battlefield: Bad Company 2 - Long load times for new maps when using a Windows® 7 / Windows Vista® based system with an: 
          o ATI Radeon HD 4xxx series graphics card
          o ATI Radeon HD 3xxx series graphics card
          o ATI Radeon HD 2xxx series graphics card


Unigine's old demos/benchmarks contain now also D3D11 renderpath.

Changes in Tropics version 1.3

    * Added stereo 3D support in several modes:
          o Anaglyph
          o Separate images
          o 3D Vision
          o iZ3D
    * Several performance optimizations

Changes in Sanctuary version 2.3

    * Added support of 3D Vision
    * Several performance optimizations

3D-Tech News Around The Web / Sculptris - free 3D modeler
« on: May 28, 2010, 12:19:12 PM »
Sculptris wants you to make 3D models. Download it and have a go! I'm sure you will enjoy.

Watch the trailer!

This installment returns to the topic of mixing OpenGL and CUDA C within the same application first introduced in Part 15  of this series. Part 15 demonstrated how to create 2D images with CUDA C on a pixel-by-pixel basis and display them with OpenGL through the use of PBOs (Pixel Buffer Objects).
This article will complete that discussion by demonstrating how to use VBO (Vertex Buffer Objects) to create 3D images with CUDA C and render them using OpenGL as 3D collections of points, wire frame images, and surfaces

Full story at Dr. Dobb's Journal

3D-Tech News Around The Web / NVIDIA Geforce SLI profile tool
« on: May 28, 2010, 11:58:19 AM »
After updating my display driver, I no longer see NvApps.xml. Did something change?

Yes. In Release 256 and later display drivers, NVIDIA has made some significant enhancements to the infrastructure of the 3D settings in the NVIDIA Control Panel. These infrastructure changes will make the 3D settings and profiles faster and more robust and provide 3rd party developers with full access and control through a new API. The new infrastructure no longer uses XML to store some of the settings like SLI profiles. Instead, all 3D settings and profiles are fully integrated into the new API with support for versioning, Unicode executable names, and improved access performance. This now includes not just control over DirectX settings, but also OpenGL and CUDA settings. Instead of editing NvApps.xml, we have created a simple tool that enables SLI customers to export their SLI profiles to a text file, edit them, and then import them back into the driver.

Download here

3D-Tech News Around The Web / NVIDIA Geforce SSAA tool
« on: May 28, 2010, 11:54:33 AM »
In the launch drivers for GeForce GTX 400 series GPUs, there was a bug in the Transparency Antialiasing implementation that enabled full-screen supersampling. Is there any way to still get full-screen supersampling in Release 256?
     Yes. Release 256 drivers do fix the implementation of Transparency Antialiasing (TRAA) and now offer up to 25% performance improvements with TRAA enabled. However, since some of our gaming really enthusiasts liked the full-screen supersampling, we have created a tool for users that allows them to enable 2x, 4x, and 8x full-screen supersampling.

Download here

3D-Tech News Around The Web / NVIDIA 197.90 Quadro WHQL available
« on: May 28, 2010, 10:53:31 AM »
Changes in Version 197.90
The following sections list the important changes and the most common issues resolved 
since driver version 197.59. 
Windows Vista/Windows 7 32-bit Issues
Single GPU Issues
 Graphisoft ArchiCAD 14–ACE profile is needed for this application. 
 AutoCAD–with Windows Aero turned on, the system freezes after opening or closing 
the AutoCAD file dialog.
Multi-GPU Issues
 [SLI Mosaic], Quadro Plex D2: Quadro Plex units connected to the DuHIC cannot be 
Windows Vista/Windows 7 64-bit Issues
Single GPU Issues
 Quadro FX 3700: DirectModel toolkit–stuttering occurs when rendering display lists.  
Multi-GPU Issues
 [SLI], Quadro Plex D2 via DuHIC, G‐Sync: When running a frame lock demo and then 
pausing it, the frame counter jumps to a random value

Fixed Issues–Windows XP 32-bit
 Quadro FX 5500/4600/1700: Blue‐screen crash occurs when the “/3GB” switch is added 
to the Windows boot.ini file.

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