Comments on: Fascinating concurrency http://jeelabs.org/2010/02/04/fascinating-concurrency/ Computing stuff tied to the physical world Tue, 22 May 2012 18:27:43 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: Matt Jadud http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1093 Matt Jadud Sun, 14 Feb 2010 02:58:05 +0000 http://news.jeelabs.org/?p=5469#comment-1093 <p>No good reasons to change. The occam compiler prevents race hazards, and our runtime detects deadlock.</p> <p>But I'm not interested in sales; our premise is that it's better to write concurrent code in a language that lets you express it directly, instead of having to translate fundamentally parallel notions into sequential code yourself. That, and we're interested in teaching how to directly express parallel ideas in code, not how to <em>implement</em> these things in a sequential language. Hence, our tools have a specific purpose.</p> No good reasons to change. The occam compiler prevents race hazards, and our runtime detects deadlock.

But I’m not interested in sales; our premise is that it’s better to write concurrent code in a language that lets you express it directly, instead of having to translate fundamentally parallel notions into sequential code yourself. That, and we’re interested in teaching how to directly express parallel ideas in code, not how to implement these things in a sequential language. Hence, our tools have a specific purpose.

]]> By: Pedro Ferreira http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1045 Pedro Ferreira Mon, 08 Feb 2010 21:08:51 +0000 http://news.jeelabs.org/?p=5469#comment-1045 <p>In the WinAVR web site you can find some info on the possible OS's. http://winavr.sourceforge.net/WinAVR-user-manual.html Look for the point 5.1 Operating Systems. Look out for the Elektor of February 2010 (at least the French edition) in page 14 you have a nice article on Femto OS.</p> In the WinAVR web site you can find some info on the possible OS’s. http://winavr.sourceforge.net/WinAVR-user-manual.html Look for the point 5.1 Operating Systems. Look out for the Elektor of February 2010 (at least the French edition) in page 14 you have a nice article on Femto OS.

]]> By: AO http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1044 AO Mon, 08 Feb 2010 15:46:31 +0000 http://news.jeelabs.org/?p=5469#comment-1044 <p>Very interesting, thanks for the heads up! Will check out Femto as well -- any other multi-tasking tools ofr AVR?</p> Very interesting, thanks for the heads up! Will check out Femto as well — any other multi-tasking tools ofr AVR?

]]> By: Pedro Ferreira http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1037 Pedro Ferreira Sun, 07 Feb 2010 13:59:41 +0000 http://news.jeelabs.org/?p=5469#comment-1037 <p>humm... nice, this new language. But if I need multi-tasking on my AVR I'll stick to something like Femto OS. It already does it, it has been around for a while (reliable) and it is small. http://www.femtoos.org/ Unless someone gives me a good reason to change ;-)</p> humm… nice, this new language. But if I need multi-tasking on my AVR I’ll stick to something like Femto OS. It already does it, it has been around for a while (reliable) and it is small. http://www.femtoos.org/ Unless someone gives me a good reason to change ;-)

]]> By: Andreas Kupries http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1031 Andreas Kupries Sat, 06 Feb 2010 00:30:00 +0000 http://news.jeelabs.org/?p=5469#comment-1031 <p>@Matt I'm glad.</p> @Matt I’m glad.

]]> By: Matt Jadud http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1029 Matt Jadud Fri, 05 Feb 2010 22:20:04 +0000 http://news.jeelabs.org/?p=5469#comment-1029 <p>@Andreas: Thank you, but I assure you, I'm enjoying the conversation on this thread.</p> @Andreas: Thank you, but I assure you, I’m enjoying the conversation on this thread.

]]> By: Andreas Kupries http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1028 Andreas Kupries Fri, 05 Feb 2010 17:36:12 +0000 http://news.jeelabs.org/?p=5469#comment-1028 <p>Another multi-core chip I came across recently is the GA-nnn series (n in 4, 32, 40, 144 cpus), see http://greenarrays.com/, or http://greenarrays.com/home/products/index.html .</p> <p>That is for the Forth people, Chuck Moore is involved, IIRC he designed the core cpu (c18), and the whole cpu array on top.</p> <p>No actual hardware ships yet. Software (arrayForth, simulators, ...) is available.</p> <p>Even less for beginners than XCore, I suspect.</p> Another multi-core chip I came across recently is the GA-nnn series (n in 4, 32, 40, 144 cpus), see http://greenarrays.com/, or http://greenarrays.com/home/products/index.html .

That is for the Forth people, Chuck Moore is involved, IIRC he designed the core cpu (c18), and the whole cpu array on top.

No actual hardware ships yet. Software (arrayForth, simulators, …) is available.

Even less for beginners than XCore, I suspect.

]]> By: Andreas Kupries http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1027 Andreas Kupries Fri, 05 Feb 2010 17:31:15 +0000 http://news.jeelabs.org/?p=5469#comment-1027 <p>@Matt Jadud: If my post gave the expression of dissing your project you have my apologies. That was certainly not my intention. By adding the background info I attempted to give something a bit more to the audience <em>here</em>, which I believe/suspect is more technical, and less beginner as well.</p> @Matt Jadud: If my post gave the expression of dissing your project you have my apologies. That was certainly not my intention. By adding the background info I attempted to give something a bit more to the audience here, which I believe/suspect is more technical, and less beginner as well.

]]> By: jcw http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1024 jcw Fri, 05 Feb 2010 10:28:14 +0000 http://news.jeelabs.org/?p=5469#comment-1024 <p>Sorry, I don't tweet (anymore) - like this guy http://www.youtube.com/watch?v=QuVtO6otu_U ;)</p> Sorry, I don’t tweet (anymore) – like this guy http://www.youtube.com/watch?v=QuVtO6otu_U ;)

]]> By: Al http://jeelabs.org/2010/02/04/fascinating-concurrency/#comment-1021 Al Fri, 05 Feb 2010 08:37:05 +0000 http://news.jeelabs.org/?p=5469#comment-1021 <p>There is a few people asking about you on twitter Jean-Claude. There is a JCW there but we don't thinks its you, you should at least register jeelabs. Let us know if you do and I'll pass it on.</p> There is a few people asking about you on twitter Jean-Claude. There is a JCW there but we don’t thinks its you, you should at least register jeelabs. Let us know if you do and I’ll pass it on.

]]>