03:41AM EDT - ARM's first Research Summit is happening today at Churchill College, Cambridge. We have near-front row seats and are expecting some details on future HPC plans today.

03:42AM EDT - Initial comments from the pulpit: the SoftBank acquisition means business as usual

03:42AM EDT - Also, 'Brexit means Brexit', but ARM is multinational and is still being awarded EU funding for projects.

03:44AM EDT - Eric van Hensbergen first up

03:45AM EDT - He was first involved with the 2002 Earth Simulatior, 35.6 TF, 640 nodes

03:45AM EDT - Also involved in Roadrunner, first PF machine in 2008, then joined ARM in 2012 to lead the Exascale program

03:46AM EDT - He's the Director of HPC

03:47AM EDT - Back in 2012, 64-core ARM was a 'monster project', from Phytium. Realised 2015 with Mars using 64 'Xiaomi' cores

03:49AM EDT - Mont-Blanc project, seeing what could be done with current ARM cores with the Barcelona Supercomputing Centre. Based on Exynos (A15) with Mali-T604

03:51AM EDT - Discussing big.Little with HPC

03:51AM EDT - In some instances, lots of small cores are better for SoC rather than big chunky ones.

03:53AM EDT - Simulated energy department workload via PCA for HPC, with microarchitecture analysis (PCA)

03:53AM EDT - Some workloads are core, L1, L2, L3 or DRAM dependent - vital to see what core designs make sense

03:54AM EDT - Lots of workloads were cache sensitive, over core sensitive, and the graph shows this

03:55AM EDT - Scaleable Vector Extensions (the new announcement) was a result of input from this testing and partners like Cray and Fujitsu

03:56AM EDT - Neon wasn't enough, it was more DSP focused. Hence SVE was created

03:56AM EDT - We saw a lot of workloads were pushing out vector lengths, so rather than redesign the uArch every 2 years, make an agnostic design

03:57AM EDT - SVE is an optional part of the licencable ARMv8-A architecture

03:58AM EDT - Aside from SVE, bottlenecks in memory and cache are frustrating. Working with Sandia National Labs and DoE to address this issue through new technologies

03:59AM EDT - Lenovo servers with Cavium deployed in the UK were the first HPC ARM cores being shipped. 1152 64-bit ARM cores in 6U

04:00AM EDT - Design centre in Manchester (UK) to focus on tools/libraries and runtimes for ARM HPC support in commercial

04:04AM EDT - Porting OpenHPC packages for ARM

04:05AM EDT - ARM is a silver member of OpenHPC

04:06AM EDT - Currently at 131/166 packages ported

04:06AM EDT - Member of many international standards - HSA, JEDEC, OpenSHMEM, CCIX, OpenCompute, OpenMP, HMC Consortium

04:06AM EDT - 'Some of the competition consolidate the aspects of computing into their portfolio - ARM is about encouraging diversity and competition'

04:07AM EDT - 'We want to test real world workloads so we can tune our general purpose architectures towards what people are facing'

04:08AM EDT - 'You want Exascale to be widely used and widely applicable to the widest range of applications'

04:08AM EDT - 'Data analysics, for design and application, is an important area we focus on'

04:08AM EDT - A number of China partners are focusing a lot on HPC, there were six strains being followed and now down to three to be developed in 2017

04:08AM EDT - Also embedded HPC, next gen processors for space

04:09AM EDT - Dedicated HPC Tools for ARM are all online. Building the community over time, user group meetings etc

04:14AM EDT - Steve Furber, ICL Professor of Computer Engineering, University of Manchester

04:14AM EDT - SpiNNaker project has been discussed for 20 years, developed over the last 10

04:14AM EDT - The issue is the ability to simulate a brain

04:14AM EDT - Part of the EU Big Brain Project

04:15AM EDT - 'Simulating a brain can help a lot of common problems in many areas'

04:16AM EDT - Current estimates to run a real-time human brain model require a post Exascale system

04:17AM EDT - Obviously that takes tens of megawatts, and the human brain uses 20W or so

04:17AM EDT - Conversely, a brain can't simulate a computer either.

04:18AM EDT - Brains are comparatively slow, doing things on the order of a millisecond, not nanoseconds

04:18AM EDT - The most efficient cores tend to be the ones that do the least work

04:18AM EDT - Brain is very good for fault tolerance

04:21AM EDT - The Human Brain project is a headline EU Flagship project, headline 1b euro budget over 10 years. or 100m/year for 120 institutions

04:21AM EDT - Questions about Brexit are unknown, for now

04:22AM EDT - If you're wondering what brains has to do with ARM HPC, it's like a big roadmap goal in computing in general, so ARM want to play a role

04:22AM EDT - Hence why it's a big part of this Keynote

04:23AM EDT - 'Turn the high performance computer into something you can interact with because it has a 'brain''

04:24AM EDT - An issue with a million ARM SoCs, network topology is complex and scalability is an issue

04:25AM EDT - A mouse is 1/1000 of a human brain, so that's an intermediate target

04:26AM EDT - Apply computer-based mouse brain to a mouse robot, and if the result likes cheese, it's a ticked box

04:27AM EDT - 'You decouple the topology of the network from the topology of what you need.'

04:28AM EDT - 'You decouple the topology of the network from the topology of what you need.'

04:28AM EDT - 'Time models itself and it all runs async. Processors have to cope'

04:28AM EDT - Spinnaker chip uses a core and LPDDR memory from Micron in one 2.5D package

04:29AM EDT - This package method saves 15% power

04:30AM EDT - 18 ARM968 cores in a chip, at 130nm

04:30AM EDT - ARM968, because it's cheap. DRAM is 1mm from the processor

04:31AM EDT - The memory is scratchpad, not caches

04:32AM EDT - The packet switch router is the key data transfer point

04:32AM EDT - The router is the key innovation in spinnaker for realtime neural networks

04:34AM EDT - The router shows processor spikes, and where spikes have to travel to. 3-state content addressable associative table

04:34AM EDT - 1 incoming packet could become 24 outgoing packets, depending on table configuration

04:34AM EDT - 'You decouple the topology of the network from the topology of what you need.'

04:35AM EDT - dispatch the packet ASAP, which the hardware achieves

04:36AM EDT - SpiNNaker will be used by non-ARM gurus, so SDKs and coding hierarchy is provided

04:38AM EDT - Obviously this is a university project, so budgets are low. Hence ARM968, rather than say A53

04:39AM EDT - 20k core machine requires 2kW

04:39AM EDT - 100k cores at 10kW, managed to 5kW, idle much lower

04:41AM EDT - Human Brain Project platform uses 500,000 cores, 6 cabinets, and any academic can use it.

04:44AM EDT - Spinnaker uses 10nanojoule per spiked connection. Human brain is 10 femtojoule, BlueGene is about 1 Joule

04:45AM EDT - Prof Furber developed a Sudoku solver in 36400 neurons, solves any sudoku in 10 seconds. Example project

04:47AM EDT - Third part of the Keynote, dealing with cache and memory design for HPC for the 2020-2030

04:50AM EDT - Need to rethink memory, lots of chip space is dedicated to memory

04:51AM EDT - THis talk is fast paced with lots of slide detail. I may resort to a lot of images here

05:07AM EDT - Basically, Rowhammer is an issue. How to solve

05:29AM EDT - Keynote is over, upload is 10KB/s so just waiting for the last pictures to upload...

06:10AM EDT - Uploaded! There's two days of talks to go to for the summit. You can follow at #armsummit

POST A COMMENT

8 Comments

View All Comments

  • jjj - Thursday, September 15, 2016 - link

    You guys need to announce live blogs ahead of time, it's good for business and for readers. Reply
  • colinisation - Thursday, September 15, 2016 - link

    I agree but on the other hand makes a nice surprise for when I check the site.

    Now to read the blog for indications on Ananke or Ares
    Reply
  • Ian Cutress - Thursday, September 15, 2016 - link

    To be fair, I was told the keynote was at 435pm, and it was changed at 8pm the previous night to 835am. I arrived at the venue barely in time (It's a 2h30 trip to get there) taking the early trains. Fun times :) Reply
  • TeXWiller - Thursday, September 15, 2016 - link

    There's the live stream: https://www.youtube.com/watch?v=lfrN6-0nlc4 Reply
  • TeXWiller - Thursday, September 15, 2016 - link

    Sorry. There was an accessible live stream. Reply
  • Meteor2 - Friday, September 16, 2016 - link

    It's pretty obvious why ARM wants to be part of HPC, but nowhere in that presentation do I see where HPC wants ARM. What does it offer that x86 and GPU does not? Reply
  • Isabella Butts - Thursday, February 13, 2020 - link

    I would like to attend such a research summit. It is a pity that there is no possibility to do it. It would be great to attend it since I buy a research paper on this topic. I used the help of the service https://paperial.com/buy-research-paper to write my task, as I did not have enough information to finish my work. I think that it is worth announcing such research summits in advance. Reply
  • tomgailey - Tuesday, September 22, 2020 - link

    Epic hero as an embodiment of the human’s social ideal is a bearer of the collective and conventional values of his culture. The images, motives, and the accompanying values which are included in the epic were formed in popular culture in the earliest time https://original-essays.org/essays/literature/gilg... Reply

Log in

Don't have an account? Sign up now