Tag Archives: cpu

Making CPU and GPU play nice together

Do you know what CUDA and OpenCL stand for and how they could make your computer 50 times faster? If so, you can safely jump to the “Ending the mess” section below. Otherwise read on for a gentle introduction.

A computer has two important processing units: the CPU and GPU. Think of them as the two brothers in Rain Man. The GPU is the ultimate autistic savant. He’s really, really good at counting stuff and doing a lot of complex math at the same time.

The CPU is your regular guy. He can do all kinds of stuff that the savant can’t. He goes along well with everybody, as long as they speak English. If he learns to take advantage of the savant, the two of them can do amazing things like count cards at Poker.

In other words, the GPU is natural at some operations that involve repetitive calculations, like those necessary for drawing 3D graphics and doing basic image manipulation.

Read the rest of this article HERE.

GPU benchmark tool for image processing

Here is a small benchmark that try to compare several optimized Intel OpenCV library functions with their GPU analogs, written using OpenGL and GLSL shader language.

More information HERE.

Because I can’t resist, here is my score (Core 2 Duo 6600 default clocks, Radeon HD 3870 Catalyst8.5, WinXP 32-bit) with Resolution multiplier set to 4:

------------ CPU  | GPU
step1:       75.3   21.5
step2:       35.8   22.5
step3:       05.7   00.7
Total Time: 116.9  345.3


AMD will support the Havok Physics Engine

AMD will add the Havok Physics engine to both its multi-core CPUs and GPUs, but AMD managing director noted that the focus is on CPUs given feedback from gaming developers who like the idea of offsetting physics computation to CPU cores.

Read whole article HERE

AMD is hoping to accelerate Havok Physics on both its multi-core CPUs and GPUs and claims that it’s striving to deliver the best of both worlds. However, the main focus at the moment appears to be AMD’s CPUs. AMD and Havok say that they’re planning to optimise the ‘full range of Havok technologies on AMD x86 superscalar processors, and AMD claims that Havok Physics scales extremely well across the entire family of AMD processors.

Havok’s managing director, David O’Meara, explained the priority for CPUs, saying that the feedback that we consistently receive from leading game developers is that core game play simulation should be performed on CPU cores. However, he added that GPU physics acceleration could become a feature in the future, saying that ‘the capabilities of massively parallel products offer technical possibilities for computing certain types of simulation.


Related links:
AMD’s physics secret revealed: It’s Havok @ TG Daily

[English]NVIDIA Tegra Round-up[/English][French]NVIDIA Tegra: petite synthèse[/French]

Un jour après sa sortie sur le Net, Geeks3D vous propose un petit résumé du nouveau produit de NVIDIA, la puce Tegra.

NVIDIA Tegra est system-on-a-chip (SoC) or computer-on-a-chip (CoC). Tegra consiste en un processeur ARM11 (800MHz), un GPU (puce graphique) GeForce (renommée en GeForce ULP – Ultra Low Power) supportant OpenGL ES 2.0, un processeur d’image (support camera digitale), un processeur video HD (PureVideo pour handhelds), de la mémoire (NAND Flash, Mobile DDR), un northbridge (controlleur mémoire, affichage vidéo, HDMI+HDCP), et un southbridge, le tout au sein de la même enveloppe physique.

One day after its official release on the Net, Geeks3D offers you a round-up of the new NVIDIA product, the Tegra chip.

NVIDIA Tegra is a system-on-a-chip (SoC) or computer-on-a-chip (CoC). Tegra consists of an ARM11 CPU core (800MHz), a GeForce GPU (renamed into GeForce ULV) supporting OpenGL ES 2.0, an image processor (digital camera support), a HD video processor (PureVideo for handhelds), memory (NAND Flash, Mobile DDR), a northbridge (memory controller, display output, HDMI+HDCP, security engine) and a southbridge (USB OTG, UART, external memory card SPI SDIO, etc). In short, NVIDIA Tegra includes the whole shebang: CPU, graphics and what you traditionally find on a motherboard are squeezed onto a single silicon die.

Liens en anglais:
Links in english:

Liens en français:
Links in french:

GPUs soon dead?

This article is available in french only. It talks about the struggle between CPUs and GPUs.

L’année écoulée a vu poindre les prémices d’une guerre technologique et commerciale qui va prendre une importance grandissante dans les années à venir : la guerre entre les GPU et les CPU. De simples afficheurs de triangles texturés en 1995, les cartes graphiques munies de GPU sont devenues des sortes d’énormes DSP bientôt composées d’un milliard de transistors, délivrant des performances approchant bientôt le téraFLOPS. La répartition des tâches semblait jusqu’ici bien déterminée entre le CPU, dévolu aux tâches de gestion et de décision, et le GPU se chargeant du calcul brut, en particulier graphique. Mais les quelques acteurs du marché ont récemment amorcé des mouvements les préparant à dépasser leurs frontières traditionnelles.

Read the full article HERE.

3DMark Vantage

3DMark Vantage le nouveau benchmark CPU/GPU de Futurmark est disponible depuis quelques heures sur les serveurs des sites 3D majeurs comme Guru3D. 3DMark Vantage est ciblé pour Windows Vista et DirectX 10 et utilise un tout nouveau moteur 3D pour exploiter au mieux la dernière API graphique de Microsoft.

Ce nouveau benchmark est disponible en 4 versions: une gratuite (trial) et 3 payantes:
– Basic: $6.95
– Advanced: $19.95
– Professional: $495

La version totalement gratuite est téléchargeable MAIS elle est extrêmement limitée puisqu’elle n’autorise qu’un seul lancement des tests, avec les réglages standards. Je pense que l’on devrait retrouver d’ici peu la version Basic (ou Advanced) en bundle avec certaines cartes graphiques…

Voici une petite compilation de liens pour vous aider à mieux exploiter 3DMark Vantage:

3DMark Vantage is the new industry standard PC gaming performance benchmark from Futuremark, newly designed for Windows Vista and DirectX10. It includes two new graphics tests, two new CPU tests, several new feature tests, and support for the latest hardware. 3DMark Vantage is based on a completely new rendering engine, developed specifically to take full advantage of DirectX10, the new graphics API from Microsoft.

This new benchmar is available in 4 versions:
– Trial: free
– Basic: $6.95
– Advanced: $19.95
– Professional: $495

The free version is downloadable BUT it’s very limited since only one launch is allowed with standard settings. I guess we should find soon the Basic version (or Advanced) as part of the bundle of some graphics cards…

Here is a little compilation of links to help you to start with 3DMark Vantage:

3DMark Vantage @ Futurmark

– Download: [download#1]
– Download: [download#2]

3DMark Vantage @ Guru3D
3DMark Vantage @ MajorGeeks
3DMark Vantage @ Revioo

Graphics Drivers
NVIDIA Forceware 175.12 Vista 32
NVIDIA Forceware 175.12 Vista 64
ATI Catalyst 3DMark Vantage Hotfix Released for Radeon 2k/3k

3DMark Vantage, new torture for your gaming setup @ expreview.com
Futuremark 3DMark Vantage Review @ Overclockers Club
Futuremark 3DMark Vantage – The Gamers New Benchmark @ Legit Reviews
3DMark Vantage Overview and Performance @ FiringSquad
Futuremark 3DMark Vantage @ AnandTech
3DMark Vantage quick user guide @ Guru3D
3DMark Vantage formal version screenshots @ hardspell
3DMark Vantage Presentation @ accelenation
3DMark Vantage est enfin là @ pcinpact

GPU Test

PhysX Test