Subject: Graphics Cards, Processors | December 8, 2015 - 08:07 AM | Scott Michaud
Tagged: hsa, GCC, amd
Phoronix, the Linux-focused hardware website, highlighted patches for the GNU Compiler Collection (GCC) that implement HSA. This will allow newer APUs, such as AMD's Carrizo, to accelerate chunks of code (mostly loops) that have been tagged with a precompiler flag as valuable to be done on the GPU. While I have done some GPGPU development, many of the low-level specifics of HSA aren't areas that I have too much experience with.
The patches have been managed by Martin Jambor of SUSE Labs. You can see a slideshow presentation of their work on the GNU website. Even though features froze about a month ago, they are apparently hoping that this will make it into the official GCC 6 release. If so, many developers around the world will be able to target HSA-compatible hardware in the first half of 2016. Technically, anyone can do so regardless, but they would need to specifically use the unofficial branch on the GCC Subversion repository. This probably means compiling it themselves, and it might even be behind on a few features in other branches that were accepted into GCC 6.
Subject: Graphics Cards | December 6, 2015 - 11:29 PM | Scott Michaud
Tagged: gigabyte, cooler master, asetek, amd
AMD and Gigabyte have each received cease and desist letters from Asetek, regarding the Radeon Fury X and GeForce GTX 980 Water Force, respectively, for using a Cooler Master-based liquid cooling solution. The Cooler Master Seiden 120M is a self-contained block and water pump, which courts have ruled that it infringes on one of Asetek's patents. Asetek has been awarded 25.375% of Cooler Master's revenue from all affected products since January 1st, 2015.
This issue obviously affects NVIDIA less than AMD, since it applies to a single product from just one AIB partner. On AMD's side, however, it affects all Fury X products, but obviously not the air-cooled Fury and Fury Nano cards. It's also possible that future SKUs could be affected as well, especially since upcoming, top end GPUs will probably be in small packages adjacent HBM 2.0 memory. This dense form-factor lends itself well to direct cooling techniques, like closed-loop water.
Even more interesting is that we believe Asetek was expecting to get the Fury X contract. We reported on an Asetek press release that claimed they received their “Largest Ever Design Win” with an undisclosed OEM. We expected it to be the follow-up to the 290X, which we assumed was called 390X because, I mean, AMD just chose that branding, right? Then the Fury X launched and it contained a Cooler Master pump. I was confused. No other candidate for “Largest Ever Design Win” popped up from Asetek, either. I guess we were right? Question mark? The press release of Asetek's design win came out in August 2014 while Asetek won the patent case in December of that year.
Regardless, this patent war has been ongoing for several months now. If it even affects any future products, I'd hope that they'd have enough warning at this point.
Subject: Graphics Cards | December 3, 2015 - 10:34 PM | Sebastian Peak
Tagged: Tonga XT, tonga, Radeon R9 380X, Radeon R9 285, Radeon R9 280X, Radeon R9 280, radeon, amd, 384-bit
While it was reported a year ago that AMD's Tonga XT GPU had a 384-bit memory bus in articles sourcing the same PC Watch report, when the Radeon R9 380X was released last month we saw a Tonga XT GPU with a 256-bit memory interface.
The full Tonga core features a 384-bit GDDR5 memory bus (Credit: PC Watch)
Reports of the upcoming card had consistently referenced the wider 384-bit bus, and tonight we are able to officially confirm that Tonga (not just Tonga XT) has been 384-bit capable all along, though this was never enabled by AMD. The reason? The company never found the right price/performance combination.
AMD confirms 384-bit bus available on Tonga, just not enabled on any product, including 380X. Didn't find a perfect perf/$ slot.
— Ryan Shrout (@ryanshrout) December 4, 2015
AMD's Raja Koduri confirmed Tonga's 384-bit bus tonight, and our own Ryan Shrout broke the news on Twitter.
So does this mean an upcoming Tonga GPU could offer this wider memory bus? Tonga itself was a follow-up to Tahiti (R9 280/280X), which did have a 384-bit bus, but all along the choice had been made to keep the updated core at 256-bit.
Now more than a year after the launch of Tonga a new part featuring a fully enabled memory bus doesn't seem realistic, but it's still interesting to know that significantly more memory bandwidth is locked away from owners of these cards.
Podcast #377 - AMD Radeon Software Crimson, our Holiday Gift Guide, Scott Wasson moving to AMD and more!
Subject: General Tech | December 3, 2015 - 03:40 PM | Ken Addison
Tagged: podcast, video, amd, radeon software, crimson, holiday gift guide, ATIC, GLOBALFOUNDRIES, raspberry pi zero, scott wasson, tech report, Thinkpad, yoga p40
PC Perspective Podcast #377 - 12/03/2015
Join us this week as we discuss AMD Radeon Software Crimson, our Holiday Gift Guide, Scott Wasson moving to AMD and more!
The URL for the podcast is: http://pcper.com/podcast - Share with your friends!
- iTunes - Subscribe to the podcast directly through the Store
- RSS - Subscribe through your regular RSS reader
- MP3 - Direct download link to the MP3 file
Hosts: Jeremy Hellstrom, Josh Walrath, and Sebastian Peak
Program length: 0:54:20
Week in Review:
News item of interest:
Hardware/Software Picks of the Week:
Ryan: Emergency Underwear
Sebastian: Quad-core CPU for $70!!
Subject: General Tech | December 2, 2015 - 11:39 PM | Scott Michaud
Update 2 (11:50pm): Okay, so. Scott Wasson was asked by Raja Koduri to join the Radeon Technologies Group, their intention being to implement the work he did with (and surrounding) his frame time benchmark to improve user experience. Scott Wasson will step down as Editor-in-Chief of The Tech Report, and promote Jeff Kampman in his place.
Update: Scott Wasson has just published a blog post about it, naturally minutes after I wrote this. We'll add more details above this as we digest them. Original news below!
AMD has just announced that Scott Wasson, Editor-in-Chief at The Tech Report, will leave his site and join their ranks. Details are still scarce because of how fresh this announcement is, but he will join the company to lead User Experience. Scott Wasson is a good friend of PC Perspective and our Editor-in-Chief, Ryan Shrout. They shared notes during the development of Frame Rating.
Ryan is still visiting AMD for the scheduled briefing, and will probably be talking more about this over the next couple of days. Scott Wasson's new position at the chip designer will take effect in January. We don't yet know how this will affect The Tech Report itself, whether someone will take over or not. Ryan broke the news on our most recent podcast from the event.
Subject: Systems | November 29, 2015 - 09:12 PM | Scott Michaud
Tagged: sony, playstation 4, ps4, amd, Jaguar, APU
Of the eight Jaguar cores that Sony added to the PlayStation 4 APU, two were locked down the console's operating system and other tasks. This left the developer with six to push their workloads through. This was the same as the Xbox One until Microsoft released an update last year, which unlocked one to give seven.
NeoGAF users report that, allegedly, PlayStation 4 games can now utilize seven of the eight cores after a recent SDK update from Sony. They source a recent changelist for FMOD, a popular audio management library for PC, mobile, and console platforms, which references targeting “the newly unlocked 7th core.”
Since this is not an official Sony announcement, at least not publicly, we don't know some key details. For instance, is the core completely free, or will the OS still push tasks on it during gameplay? Will any features be disabled if the seventh core is targeted? How frequently will the seventh core be blocked, if ever? What will happen if you block it, if anything? The Xbox One is said to use about 20% of their unlocked seventh core for Microsoft-related tasks, and claiming the remaining 80% is said to disable voice recognition and Kinect features.
The Xbox One and PlayStation 4 are interesting devices to think about. They go low frequency, but wide, in performance, similar to many mobile devices. They also utilize a well-known instruction set, x86, which obviously has a huge catalog of existing libraries and features. I don't plan on every buying another console, but they move with the industry and has a fairly big effect on it (albeit much less than previous generations).
Subject: Graphics Cards | November 29, 2015 - 05:25 PM | Scott Michaud
Tagged: amd, graphics driver, radeon, crimson
Users have been reporting that the latest AMD graphics driver, Radeon Software Crimson Edition, has been incorrectly setting fan speeds. Some users report that the driver spins up fans to 100% and others report that they slow down to 30% regardless of load.
Over the weekend, AMD acknowledged the issue and claim that a fix is intended for Monday.
Some users also claim that the card will stick with that fan setting until it cooks itself. This seems odd to me, since GPUs (and CPUs of course) are now designed to down-volt if temperatures reach unsafe levels, and even cut power entirely if heat cannot be managed. We haven't really seen reports of graphics cards cooking themselves since the Radeon HD 5000 series implemented hardware in response to Furmark and OCCT. That said, the driver bug might some how override these hardware protections.
In the mean time, you'll either want to keep an eye on your fan settings and reset them as necessary, or roll back to the previous driver. AMD didn't comment on the high fan speed issue that some were complaining about, so I'm not sure if this fix will address both issues.
Subject: Graphics Cards | November 26, 2015 - 03:09 PM | Scott Michaud
Tagged: amd, graphics drivers, GCN, terascale
The Graphics Core Next (GCN) architecture is now a minimum requirement for upcoming AMD graphics drivers. If your graphics card (or APU) uses the TeraScale family of microarchitectures, then your last expected WHQL driver is AMD Catalyst 15.7.1 for Windows 7, 8.x, and 10. You aren't entirely left out of Radeon Software Crimson Edition, however. The latest Crimson Edition Beta driver is compatible with TeraScale, but the upcoming certified one will not be.
GCN was introduced with the AMD Radeon HD 7000 series, although it was only used in the Radeon HD 7700 series GPUs and above. The language doesn't seem to rule out an emergency driver release, such as if Microsoft breaks something in a Windows 10 update that causes bluescreens and fire on older hardware, but they also don't say that they will either. NVIDIA made a similar decision to deprecate pre-Fermi architectures back in March of 2014, which applied to the release of GeForce 343 Drivers in September of that year. Extended support for NVIDIA's old cards end on April 1st, 2016.
I wonder why AMD chose a beta driver to stop with, though. If AMD intended to support TeraScale with Crimson, then why wouldn't they keep it supported until at the first WHQL-certified version? If they didn't intend to support TeraScale, then why go through the effort of supporting it with the beta driver? This implies that AMD reached a hurdle with TeraScale that they didn't want to overcome. That may not be the case, but it's the first thing that comes to my mind none-the-less. Probably the best way to tell is to see how people with Radeon HD 6000-series (or lower-end 7000/8000-series) cards work with Radeon Software Crimson Beta.
Likely the last drivers that users with Radeon HD 6000-series graphics need are 15.7.1 or Radeon Software Crimson Edition Beta. We will soon learn which of the two will be best long-term.
Or, of course, you can buy a newer GPU / APU when you get a chance.
Subject: Graphics Cards | November 25, 2015 - 02:54 PM | Jeremy Hellstrom
Tagged: radeon, r9 nano, mini ITX, amd, obsidian 250d, corsair
When Ryan tested out how the R9 Nano performs in tiny cases he chose the Cooler Master Elite 110, the Raijintek Metis, the Lian Li PC-Q33BL and their PC-Q30X. The card did slow down somewhat because of a lack of airflow in the case but that was quickly remedied with a drill press and we saw vast improvements in the in-game frequencies. [H]ard|OCP performed a similar experiment with the Cooler Master Elite 110 as well and found similar results.
They are now back at it again, this time testing in a Corsair Obsidian Series 250D Mini ITX case, which is large enough to accommodate a full sized GPU and provide improved airflow. They tested the Nano against a GTX 980 Ti and a R9 Fury X as they cost a similar amount to the tiny little Nano. They tested the cards at both 1440p and 4K resolutions and as you might reasonably expect the Nano fell behind, especially at 4K. If you have a case which can fit a full sized GPU then the Nano does not make sense to purchase, however in cases in which the larger cards will not fit then the Nano's performance is unmatched.
"Our second installment covering our AMD Radeon R9 Nano in a Small Form Factor chassis is finally done. We will upgrade the case to a Corsair Obsidian Series 250D Mini ITX PC Case and compare the R9 Nano to price competitive video cards that can be installed. We game at 1440p and 4K for the ultimate small form factor experience."
Here are some more Graphics Card articles from around the web:
- AMD Radeon Software Crimson Edition Is A Letdown On Linux @ Phoronix
- Radeon Software Crimson; The Review @ Hardware Canucks
- AMD Radeon Software Crimson Editon Detailed Briefing @ TechARP
Subject: Graphics Cards | November 24, 2015 - 09:08 PM | Ryan Shrout
Tagged: video, radeon software, radeon, live, giveaway, freesync, crimson, contest, amd
UPDATE: Did you miss today's live stream? No worries! You can get the full rundown of the new Radeon Software Crimson Edition driver and get details on new features like FreeSync Low Frame Rate Compensation, DX9 frame pacing, custom resolutions, and more. Check out the video embed below.
It's nearly time for the holidays to begin but that doesn't mean the hardware and software news train comes to a halt! This week we are hosting AMD in the PC Perspective offices for a live stream to discuss the upcoming release of the new AMD Radeon Software Crimson Edition. Earlier in the month we showed you a preview of what changes were coming to the AMD GPU driver and now we are going to not only demo it for you but let the community ask AMD questions directly about it!
And what's a live stream without prizes? AMD has stepped up to the plate to offer up some awesome hardware for those of you that tune in to watch the live stream!
- 2 x AMD Radeon R9 Nano 4GB Fiji Graphics Cards
- 2 x PowerColor PCS+ Radeon R9 380 Graphics Cards
AMD Radeon Software Crimson Live Stream and Giveaway
12pm PT / 3pm ET - November 24th
Need a reminder? Join our live mailing list!
The event will take place Tuesday, November 24th at 12pm PT / 3pm ET at http://www.pcper.com/live. There you’ll be able to catch the live video stream as well as use our chat room to interact with the audience. To win the prizes you will have to be watching the live stream, with exact details of the methodology for handing out the goods coming at the time of the event.
I will be joined by Adrian Costelo, Product Manager for Radeon Software, and Steven Gans, UX Designer for Radeon Software. In short, these are the two people you want to hear from and have answer your questions!
If you have questions, please leave them in the comments below and we'll look through them just before the start of the live stream. Of course you'll be able to tweet us questions @pcper and we'll be keeping an eye on the IRC chat as well for more inquiries. What do you want to know and hear from AMD?
So join us! Set your calendar for Tuesday at 12pm PT / 3pm ET and be here at PC Perspective to catch it. If you are a forgetful type of person, sign up for the PC Perspective Live mailing list that we use exclusively to notify users of upcoming live streaming events including these types of specials and our regular live podcast. I promise, no spam will be had!