BRKRST-3014 – Policy, Complexity, and Modern Control Planes


Presented by: Russ White, LinkedIn

Networks are complex. How do we measure complexity? How do we measure scale? What’s the unit of measure?

You can’t “solve” complexity.

Alderson D and J Dole “complexity in highly organized systems arises primarily from design strategies intended to create robustness to uncertainty.” There’s a point on the complexity scale where robustness actually drops. “Robust but fragile”.

Dunning Kruger effect?

What is complexity?

  • Anything you don’t understand?
  • Anything with many parts?
  • Anything with unintended consequences?
  • Something that can’t be solved; can’t be easily defined.
  • We need to develop a model to understand complex systems quickly

“If you haven’t found the trade off, you haven’t looked hard enough” — Russ

The model:

  • Ask, Why?
  • Ask ,What & How?
  • State
  • Optimization
  • [Interaction] Surface (where two components interact with each other [which could be, and often is, human on CLI])
  • Ask, This is like what? (what’s it similar to?)
  • Now matter how you’re analyzing a network (protocols, applications, whatever), you’ll find these 3 things.
  • Good examples of questions to ask for each point in different use cases

3-way trade off:

  • Quick/Cheap/Quality, or
  • State/Surface/Optimization

“Adding more state to the system should result in an increase in optimization” Continue reading

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Raspberry Pi 3 creator hopes for Windows 10 desktop OS support

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Mac shipments slump for third straight quarter

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Trump would be a ‘disaster for innovation,’ say Silicon Valley execs

A group of Silicon Valley entrepreneurs, company founders, engineers, and investors have signed an open letter regarding Donald Trump. The gist: They don't like him and think his presidency would be a disaster for the business of innovation. The letter, published Thursday on Medium, accuses Trump of running a campaign based on fear of new ideas and new people, as well as anger, bigotry, and "a fundamental belief that America is weak and in decline." "We have listened to Donald Trump over the past year and we have concluded: Trump would be a disaster for innovation," the letter said.To read this article in full or to leave a comment, please click here

Mt. Gox CEO Karpeles out on bail in Japan

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Weaving Accelerators Into The Memory Complex

In the first part of this series on the proposed Cache Coherence Interconnect for Accelerators (CCIX) standard, we talked about the issues of cache coherence and the need to share memory across various kinds of compute elements in a system. In this second part, we will go deeper into the approach of providing memory coherence across CPUs and various kinds of accelerators that have their own local memory.

A local accelerator could potentially be anything. You want something to execute faster than what is possible in today’s generic processors, and so you throw specialized hardware at the problem. Still, …

Weaving Accelerators Into The Memory Complex was written by Timothy Prickett Morgan at The Next Platform.

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Campaigns use Big Data for political gain

With the presidential nominating conventions looming, the candidates are getting ready to add to the hundreds of millions they’ve already spent to tell you about themselves – but only what they want you to know about themselves.Meanwhile, they have also been spending millions of dollars collecting information about you – and you have no say in what is collected.Which means that, in the era of Big Data, if you’re a potential voter, they know a lot more about you than you know about them.[ ALSO ON CSO: When tech trips up presidential candidates ]To read this article in full or to leave a comment, please click here

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