From Parallel to Concurrent [video]

https://channel9.msdn.com/Events/Lang-NEXT/Lang-NEXT-2014/From-Parallel-to-Concurrent

by mr_tyzic • 12 years ago

126 23 12 years ago

channel9.msdn.com

kopparam2• 12 years ago

Very nice talk. I too sometimes get confused in what true concurrency means. Also, I think people are not looking at this because of the "msdn" :P

thatjoist• 12 years ago

More likely it's because of the [video] tag.

seanewest4• 12 years ago

The msdn link did catch my eye. Still clicked though...

mike-cardwell• 12 years ago

IMHO, Channel9.msdn is the best source of videos out there for developers. I've spent many an hour watching videos on there. My favourite are the C++ ones by this guy:

https://channel9.msdn.com/Tags/stephan-t-lavavej

rayiner• 12 years ago

I never look at MSDN links because they always use video. Video is a medium for toddlers. I see the title and I'm like "oh, neat, new GC in CLR 4.5 . . . oh video, pass." Give me a transcript I can skim through.

seanewest4• 12 years ago

Video is a medium for toddlers

Bold ... but ridiculous.

seanewest4• 12 years ago

He did a similar talk in 2012 titled 'Concurrency is not Parallelism'

Link: http://vimeo.com/49718712

mseepgood2• 12 years ago

Wow, CPU centuries, petabytes

mortenlarsen• 12 years ago

An actual direct video download link that you can just wget. Works without javascript, without 15 HTTP redirects and no registration. I am speechless.

fekberg2• 12 years ago

Here's a direct video link to the High Quality version: http://media.ch9.ms/ch9/33cf/90b47d47-96f9-4fc2-a9f6-933446b...

Mind you, that is 1.7GB.

Smaller size for your phone: http://media.ch9.ms/ch9/33cf/90b47d47-96f9-4fc2-a9f6-933446b... (this one is 86MB)

Edit: I miss-read, I read it as a question and a statement that it didn't work and as a request for a direct video link that you can wget. I'll keep the links here for anyone that might want them.

stewbrew• 12 years ago

I guess that's what was meant: no registration, no redirects, it just works. It surprised me too. Interesting talks.

agumonkey• 12 years ago

Still surprised there's no intermediate version though. Usually there's one in the 300-500MB, the 90MB is a tiny bit too small.

kopparam2• 12 years ago

Right? Seeing the "Right click and save as to download", and I was like "Yay! I can wget"

mseepgood2• 12 years ago

I'd prefer a BitTorrent link.

seanewest4• 12 years ago

Make one

__Joker2• 12 years ago

I like the distinction provided in this hn comment https://news.ycombinator.com/item?id=5711232#up_5714834

patrickg• 12 years ago

I always think of a web server, when it comes to concurrent vs. parallel:

A web server can handle serve many users concurrently, but if they are really served in parallel depends on the number of cores/machines.

archagon• 12 years ago

Did you link to an upvote? What does that do?

__Joker2• 12 years ago

More like reddit context. The first id is the parent comment/link id, the whole context to show. "#up_{id}" is the targeted comment.

scott_s• 12 years ago

Me too.

The funny thing is, I saw this title and though, maybe I should just write a blog post stating how I think of these words, because I find myself always linking to my HN comments defining them. It's a nice surprise when someone beats me to it.

snarfy• 12 years ago

I like this definition: https://news.ycombinator.com/item?id=5715394

Concurrency is a property of the problem - no dependencies between tasks. Parallelism is a solution which uses that property.

This definition doesn't require (erroneous) distinctions between single and multicore systems. If I use a single core system to emulate a multicore system complete with emulated clock cycles and what not, are the emulated programs running concurrently or in parallel? From which point of view? The definition shouldn't dictate an implementation.

From Parallel to Concurrent [video]

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