Featured Articles

Analysts expect ARM to do well next year

Analysts expect ARM to do well next year

British chip designer ARM could cash in on the mobile industry's rush to transition to 64-bit operating systems and hardware.

More...
Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Samsung has lost smartphone market share, ending the quarter on a low note and Xiaomi appears to be the big winner.

More...
Intel Broadwell 15W coming to CES

Intel Broadwell 15W coming to CES

It looks like Intel will be showing off its 14nm processors, codenames Broadwell, in a couple of weeks at CES 2015.

More...
Gainward GTX 980 Phantom reviewed

Gainward GTX 980 Phantom reviewed

Today we’ll be taking a closer look at the recently introduced Gainward GTX 980 4GB with the company’s trademark Phantom cooler.

More...
Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac has been in the nettop and mini-PC space for more than four years now and it has managed to carve…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Thursday, 14 November 2013 21:15

Nvidia announces new CUDA 6

Written by Slobodan Simic

nvidia cuda-logo

Unified memory for CUDA

Ahead of the annual International Conference for High Performance Computing, Networking, Storage, and Analysis, better known as the SC, Nvidia announced its new version of CUDA, CUDA 6. While most recent updates to CUDA had quite a few new features, the CUDA 6 will mostly focus on a few elements that might be quite important.

The bigest news is definitely the unified memory support wihtin CUDA. While CUDA 4 already had unified virtual addressing support which allowed x86 and GPU memory to be addressed together in a single space, it only simplified memory management and did not solve some issues that such a solution had and still required memory copying that will allow GPU to work with it.

With CUDA 6, Nvidia moved towards removing issues like memory copying by implementing a unified memory system on top of the existing memory pool structure. Basically, unified memory allows programmers to access any resource or addres within the legal address space, regardless of the place where it is in and actually use it without the need to copy it over.

While it does not resolve technical limitations that require memory copying, like limited bandwidth and latency of the PCIe, it moves memory management to CUDA rather than other toolkit, thus simply making the life of the programmer much easier.

Basically it does not solve any performance issues but rather simplifes CUDA programming. This move is made in order to make CUDA programming more accessible to wider audiences.

Nvidia did not shed any light regarding performance impact at this time, and while manual memory management is still present, CUDA unified memory will definitely have some kind of performance penalty.

Nvidia also revealed that while we are currently seeing software implementation of unified memory with CUDA 6, Maxwell will most likely have some sort of hardware functionality for implementing unified memory thus removing any performance penalties and most likely doing it much better than software solution with CUDA 6. 

Via Anandtech.com.

nvidia CUDA6unifiedmemory-1

nvidia CUDA6unifiedmemory-2

Last modified on Friday, 15 November 2013 08:27
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments