Featured Articles

5th Generation Broadwell 14nm family comes in three lines

5th Generation Broadwell 14nm family comes in three lines

Intel's 5th Core processor family, codenamed Broadwell, will launch in three lines for the mobile segment. We are talking about upcoming…

More...
Broadwell Chromebooks coming in late Q1 2015

Broadwell Chromebooks coming in late Q1 2015

Google's Chromebook OS should be updating automatically every six weeks, but Intel doesn't come close with its hardware refresh schedule.

More...
New round of Nexus phone rumour kicks off

New round of Nexus phone rumour kicks off

Rumours involving upcoming Nexus devices are nothing uncommon, but this year there is a fair bit of confusion, especially on the…

More...
Nvidia officially launches the 8-inch Shield Tablet

Nvidia officially launches the 8-inch Shield Tablet

As expected and reported earlier, Nvidia has now officially announced its newest Shield device, the new 8-inch Shield Tablet. While the…

More...
Aerocool Dead Silence reviewed

Aerocool Dead Silence reviewed

Aerocool is well known for its gamer cases with aggressive styling. However, the Dead Silence chassis offers consumers a new choice,…

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