Featured Articles

Hands on: Nvidia Shield Tablet with Android 5.0

Hands on: Nvidia Shield Tablet with Android 5.0

We broke the news of Nvidia's ambitious gaming tablet plans back in May and now the Shield tablet got a bit…

More...
Nokia N1 Android tablet ships in Q1 2015

Nokia N1 Android tablet ships in Q1 2015

Nokia has announced its first Android tablet and when we say Nokia, we don’t mean Microsoft. The Nokia N1 was designed…

More...
Marvell launches octa-core 64-bit PXA1936

Marvell launches octa-core 64-bit PXA1936

Marvell is better known for its storage controllers, but the company doesn’t want to give up on the smartphone and…

More...
TSMC 16nm FinFET Plus in risk production

TSMC 16nm FinFET Plus in risk production

TSMC’s next generation 16nm process has reached an important milestone – 16nm FinFET Plus (16FF+) is now in risk production.

More...
Nvidia GTX 970 SLI tested

Nvidia GTX 970 SLI tested

Nvidia recently released two new graphics cards based on its latest Maxwell GPU architecture, with exceptional performance-per-watt. The Geforce GTX 970…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Tuesday, 30 April 2013 09:14

AMD pushes HSA and HUMA

Written by Nick Farrell



Acronyms for our time

Chipmaker AMD is getting all enthusiastic over Heterogeneous Systems Architecture (HSA) as its cunning plan for the future.

Recently it has been talking to Ars Technica about something else dubbed "heterogeneous Uniform Memory Access" (hUMA) which is its take on HSA. HSA involves developing systems with multiple different kinds of processor, connected together and operating as peers. Normally it is CPUs and GPUs.

Armed with another set of acronyms AMD talks about splitting workloads between a CPU and a GPU, and the creation of a general purpose GPU (GPGPU). But a GPGPU is awkward for software developers, some of whom might think that GP stands for guinea pig and others are not happy that the CPU and GPU have their own pools of memory.

HUMA is AMD’s way around this problem. Using HUMA, the CPU and GPU share a single memory space and the GPU can directly access CPU memory addresses, allowing it to both read and write data that the CPU is also reading and writing. It is also cache coherent so the CPU and GPU will always see a consistent view of data in memory. If a processor makes a change then the other processor will see it.

We will first see HUMA in the chip codenamed Kaveri. It mixes up to three compute units using AMD's Bulldozer-derived Steamroller cores with a GPU. The GPU will have full access to system memory. It should be out in the second half of the year.
It appears likely that the chip AMD is designing for the PlayStation 4 later this year will also be a HSA system.

blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments