NVIDIA Updates Tegra Roadmap Details at GTC - Logan and Parker Detailedby Brian Klug & Ryan Smith on March 19, 2013 1:50 PM EST
We're at NVIDIA's GTC 2013 event where team green just updated their official roadmap and shared some more details about their Tegra portfolio, specifically additional information about Logan and Parker, the codename for the SoCs beyond Tegra 4. First up is Logan, which will be NVIDIA's first SoC with CUDA inside, specifically courtesy a Kepler architecture GPU capable of CUDA 5.0 and OpenGL 4.3. There's no details on the CPU side of things, but we're told to expect Logan demos (and samples) inside 2013 and production inside devices early 2014.
It’s interesting to note that with the move to a Kepler architecture GPU, Logan will be taking on a vastly increased graphics feature set relative to Tegra 4. With Kepler comes OpenGL 4.3 capabilities, meaning that NVIDIA is not just catching up to OpenGL ES 3.0, but shooting right past it. Tessellation, compute shaders, and geometry shaders among other things are all present in OpenGL 4.3, far exeeding the much more limited and specialized OpenGL ES 3.0 feature set. Given the promotion that NVIDIA is putting into this - they've been making it quite clear t everyone that Logan will be OpenGL 4.3 capable - this may mean that NVIDIA intends to use OpenGL 4.3 as a competitive advantage with Logan, attracting developers and users looking for a more feature-filled SoC than what current OpenGL ES 3.0 SoCs are slated to provide.
On a final note about Logan, it’s interesting to note that Kepler has a fairly strict shader block granularity of 1 SMX, i.e. 192 CUDA cores. While NVIDIA can always redefine Kepler to mean what they say it means, if they do stick to that granularity then it should give us a very narrow range of possible GPU configurations for Logan.
After Logan is Parker, which NVIDIA shared will contain the codename Denver CPU NVIDIA is working on, with 64 bit capabilities and codename Maxwell GPU. Parker will also be built using 3D FinFET transistors, likely from TSMC.
Like Logan, it's clear that Parker will be benefitting from being based on a recent NVIDIA dGPU. While we don't know a great deal about Maxwell since it doesn't launch for roughly another year, NVIDIA has told us that Maxwell will support unified virtual memory. With Logan NVIDIA gains CUDA capabilities due to Kepler, but with Parker they are laying down the groundwork for full-on heterogeneous computing in a vein similar to what AMD and the ARM partners are doing with HSA. NVIDIA has so far not talked about heterogeneous computing in great detail since they only provide GPUs and limited functionality SoCs, but with Denver giving them an in-house CPU to pair with their in-house GPUs, products like Parker will be giving them new options to explore. And perhaps more meaningfully, the means to counter HSA-enabled ARM SoCs from rival firms.
In addition NVIDIA showed off a new product named Kayla which is a small, mITX-like board running a Tegra 3 SoC and unnamed new low power Kepler family GPU.
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Krysto - Tuesday, March 19, 2013 - link"After Logan is Parker, which NVIDIA shared will contain the codename Denver CPU NVIDIA is working on, with 64 bit capabilities and codename Maxwell GPU"
You're saying that as if Logan will NOT be 64 bit?! Oh god, please tell me that's just a mistake on your part and Nvidia is not actually going to release a 32-bit only chip in 2014, when everyone else will have 64 bit chips based on ARMv8.
cmikeh2 - Tuesday, March 19, 2013 - linkAccording to their article on the A53 and A57, those chips will be sampling in late 2013 and early 2014 and won't be in production until 6-12 months into 2014. The soonest we'll be seeing consumer products with it would then probably Q4 2014 and for most uses the 64 bit change will not have yet been optimized. In the consumer environment this does not appear to be a big issue. The 64 bit transition from what I've heard and read will be felt more in server use.
Exophase - Thursday, March 21, 2013 - linkThat comment doesn't necessarily mean that Logan won't be 64-bit, it's just noting that Denver is. Although I suspect Logan may still be using A15s. I don't know about everyone else using 64-bit chips in 2014.. While a few companies have said they're going to license A57 I don't think anyone has announced an actual product aside from maybe Calxeda. We don't know when Apple or Qualcomm will transition their CPU designs to 64-bit, but based on RAM capacity growth in iPads over the last few years I can see Apple being comfortable with staying 32-bit until the end of 2014.
mayankleoboy1 - Tuesday, March 19, 2013 - linkDo we know if Logan will have unified shaders ?
Krysto - Wednesday, March 20, 2013 - linkIt's Kepler, so yes. It's going to be the most advanced GPU architecture in the mobile market by far. But that doesn't necessarily guarantee success, though. If Nvidia keeps making the die size only 80mm2, when everyone else has it at 120mm2, and if they release a 28nm chip, instead of a 20nm one in 2014, then it's very possible Tegra 5 could be behind again in graphics performance in 2014.
Also the fact that they will not have a 64 bit chip in 2014 is very disappointing. I'm pretty sure Qualcomm will have one early on in 2014, and made at 20nm, too.