Podcast #376 - Intel Speed Shift, CPU Coolers from Noctua and DEEPCOOL, Broadwell-E Rumors, and more!

Subject: General Tech | November 19, 2015 - 02:42 PM |
Tagged: podcast, video, noctua, Deepcool, Gamer Storm Gabriel, Intel, speed shift, amd, R9, fury x, trixx, Broadwell-E, kaby lake, nvidia, shield tablet k1, knights landing, asus, chromebit

PC Perspective Podcast #376 - 11/19/2015

Join us this week as we discuss Intel Speed Shift, CPU Coolers from Noctua and DEEPCOOL, Broadwell-E Rumors, and more!

You can subscribe to us through iTunes and you can still access it directly through the RSS page HERE.

The URL for the podcast is: http://pcper.com/podcast - Share with your friends!

  • iTunes - Subscribe to the podcast directly through the iTunes Store
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Hosts: Ryan Shrout, Jeremy Hellstrom, Josh Walrath, and Sebastian Peak

Program length: 1:19:22

  1. Week in Review:
  2. 0:32:10 This episode of PC Perspective Podcast is brought to you by Braintree. Even the best mobile app won’t work without the right payments API. That’s where the Braintree v.0 SDK comes in. One amazingly simple integration gives you every way to pay. Try out the sandbox and see for yourself at braintree­payments.com/pcper
  3. News item of interest:
  4. Hardware/Software Picks of the Week:
  5. Closing/outro

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Intel Launches Knights Landing-based Xeon Phi AIBs

Subject: Processors | November 18, 2015 - 07:34 AM |
Tagged: Xeon Phi, knights landing, Intel

The add-in board version of the Xeon Phi has just launched, which Intel aims at supercomputing audiences. They also announced that this product will be available as a socketed processor that is embedded in, as PC World states, “a limited number of workstations” by the first half of next year. The interesting part about these processors is that they combine a GPU-like architecture with the x86 instruction set.

intel-2015-KNL die.jpg

Image Credit: Intel (Developer Zone)

In the case of next year's socketed Knights Landing CPUs, you can even boot your OS with it (and no other processor installed). It will probably be a little like running a 72-core Atom-based netbook.

To make it a little more clear, Knights Landing is a 72-core, 512-bit processor. You might wonder how that can compete against a modern GPU, which has thousands of cores, but those are not really cores in the CPU sense. GPUs crunch massive amounts of calculations by essentially tying several cores together, and doing other tricks to minimize die area per effective instruction. NVIDIA ties 32 instructions together and pushes them down the silicon. As long as they don't diverge, you can get 32 independent computations for very little die area. AMD packs 64 together.

Knight's Landing does the same. The 512-bit registers can hold 16 single-precision (32-bit) values and operate on them simultaneously.

16 times 72 is 1152. All of a sudden, we're in shader-count territory. This is one of the reasons why they can achieve such high performance with “only” 72 cores, compared to the “thousands” that are present on GPUs. They're actually on a similar scale, just counted differently.

Update: (November 18th @ 1:51 pm EST) I just realized that, while I kept saying "one of the reasons", I never elaborated on the other points. Knights Landing also has four threads per core. So that "72 core" is actually "288 thread", with 512-bit registers that can perform sixteen 32-bit SIMD instructions simultaneously. While hyperthreading is not known to be 100% efficient, you could consider Knights Landing to be a GPU with 4608 shader units. Again, it's not the best way to count it, but it could sort-of work.

So in terms of raw performance, Knights Landing can crunch about 8 TeraFLOPs of single-precision performance or around 3 TeraFLOPs of double-precision, 64-bit performance. This is around 30% faster than the Titan X in single precision, and around twice the performance of Titan Black in double precision. NVIDIA basically removed the FP64 compute units from Maxwell / Titan X, so Knight's Landing is about 16x faster, but that's not really a fair comparison. NVIDIA recommends Kepler for double-precision workloads.

So interestingly, Knights Landing would be a top-tier graphics card (in terms of shading performance) if it was compatible with typical graphics APIs. Of course, it's not, and it will be priced way higher than, for instance, the AMD Radeon Fury X. Knight's Landing isn't available on Intel ARK yet, but previous models are in the $2000 - $4000 range.

Source: PC World

New server chips from Intel on the way

Subject: General Tech | May 27, 2015 - 12:27 PM |
Tagged: Purley, Intel, Skylake, Cannonlake, Grantley, Romley, knights landing

The Register has obtained a slide describing the next families of Xeon processor to be released by Intel, the Purley platform which includes Skylake.  There are some interesting new developments, including on die interface for either 10Gb/sec Ethernet or 100Gb/sec Omni-Path fabrics which interested the participants at the HPC conference the slides were shown at.  They also mentioned a brand new memory architecture which is described as offering four times the capacity and 500 times the speed than current NAND, all at a lower price per chip which is likely to be somewhat of an exaggeration on their part.  There were also new Phi chips, including the long awaited Knights Landing and workstation chips for use outside the server room.

intel-kdm-roadmap-1.jpg

"A presentation given at a conference on high-performance computing (HPC) in Poland earlier this month appears to have yielded new insight into Intel's Xeon server chip roadmap.

A set of slides spotted by our sister site The Platform indicates that Chipzilla is moving toward a new server platform called "Purley" that will debut in 2017 or later."

Here is some more Tech News from around the web:

Tech Talk

 

Source: The Register

Learn a bit more about Knights Landing

Subject: General Tech | March 27, 2015 - 02:23 PM |
Tagged: Xeon Phi, silvermont, knights landing, Intel

Today a bit more information about Intel's upcoming Knights Landing platform appeared at The Register.  The 60 core and 240 thread figure is quoted once again though now we know there is over 8 billion transistors on the chip, which does not include the 16 GB of near memory also present on the package.  The processor will support six memory channel, three each in two memory controllers on the die, with a total of 384 GB of far memory.  The terms near and far are new, representing onboard and external memory respectively.  There is a lot more information you can dig into by following the link on The Register to this long article posted at The Platform.

intel-knights-landing-sled-new.jpg

"Intel has set some rumours to rest, giving a media and analyst briefing outlining details of its coming 60-plus core Knights Landing Xeon Phi chip."

Here is some more Tech News from around the web:

Tech Talk

 

Source: The Register

Podcast #307 - EVGA Torq X10 Mouse, Samsung 850 Pro, OCZ RevoDrive 350 and more!

Subject: General Tech | July 3, 2014 - 03:17 PM |
Tagged: podcast, video, evga, TORQ X10, Samsung, 850 PRO, ocz, RevoDrive 350, Silverstone, Nightjar, knights landing, Xeon Phi

PC Perspective Podcast #307 - 07/03/2014

Join us this week as we discuss the EVGA Torq X10 Mouse, Samsung 850 Pro, OCZ RevoDrive 350 and more!

You can subscribe to us through iTunes and you can still access it directly through the RSS page HERE.

The URL for the podcast is: http://pcper.com/podcast - Share with your friends!

  • iTunes - Subscribe to the podcast directly through the iTunes Store
  • RSS - Subscribe through your regular RSS reader
  • MP3 - Direct download link to the MP3 file

Hosts: Ryan Shrout, Josh Walrath, Jeremy Hellstrom, and Morry Tietelman

Program length: 1:19:27

Subscribe to the PC Perspective YouTube Channel for more videos, reviews and podcasts!!

 

Intel is stacking memory on top of the new Xeons

Subject: General Tech | November 22, 2013 - 12:29 PM |
Tagged: Supercomputing Conference, Intel, SoC, Near Memory, knights landing

Intel spilled more beans about the new Near Memory architecture that will be accompanying their new Xeon release.  The memory will be stacked directly onto the CPU giving much quicker access than you would normally see from DDR3 which has to travel over the motherboard.  They have not disclosed expected speeds, which could be up to what we see in current CPU caches only in much larger sizes.  This is not quite a Xeon SoC but in the presentation The Register heard of Intel's plans to incorporate optical fabrics and switches onto the CPUs as well with size being the only limit.  Perhaps they do have a leg to stand on when they claim the return to power of homogeneous computing.

xeon_plus_memory_stack.jpg

"According to an EE Times report, Intel's Rajeeb Hazra, a VP and general manager of its data centre group, said Intel would customise high-end Xeon processors and Xeon Phi co-processors by closely integrating memory, both by adding memory dies to a processor package and, at a later date, integrating layers of memory dies into the processor along with optical fabrics and switches."

Here is some more Tech News from around the web:

Tech Talk

Source: The Register

Intel claims Knight's Landing will slay HUMA and bare all CUDA's flaws

Subject: General Tech | November 20, 2013 - 12:53 PM |
Tagged: Xeon Phi, knights landing, Intel, 14nm

Intel has been talking up the Xeon Phi, first of the Knight's Landing chips which shall arrive in the not too distant future.  This new architecture is touted to bring a return of homogeneous systems architecture which will perform parallel processing on its many cores, currently 61 is the number being tossed around, at a level of performance that will exceed the GPU accelerated heterogeneous architecture being pushed by AMD and NVIDIA.  Whether this is true or not remains to be seen but many server builders may prefer the familiar CPU only architecture and as at least some of the Phi's will be available in rack mounted form and not just addin cards they may choose Intel out of habit.   You can also read about Micron's Automata Processor which The Register reports can outperform a 48-chip cluster of Intel Xeon 5650s in certain scenarios.

KNOTS01.jpg

"From Intel's point of view, today's hottest trend in high-performance computing – GPU acceleration – is just a phase, one that will be superseded by the advent of many-core CPUs, beginning with Chipzilla's next-generation Xeon Phi, codenamed "Knights Landing"."

Here is some more Tech News from around the web:

Tech Talk

Source: The Register