World: r3wp

Btw makes nice coverage-tests then)

http://www.cs.vu.nl/~ast/reliable-os/

volker, nice read. very easy to digest.

Yes, Tanenbaum can write:)

Fission: https://addons.mozilla.org/firefox/1951/

Puts the progression-bar below the url (at the top, where one looks). 
Interesting feedback.

below means bar is now the url-background.

Volker, I never say that compiling rebol is not possible, I said 
that is exponentially difficult.

So in practice compiling rebol is a pain in the arse.

Much more than other languages. Because there is no easy way to make 
assumptions. The moment you make an assumption you leave space for 
a compilation hole.

Now if the Rebol becomes a function first language like lisp you 
can get a bit further but still you will need some other markers.

No, exactly not. Without that "run first" yes. With it not. Or i 
miss something very stupid.

MINIX3 sounds interesting, BTW.

I'm almost tempted to try it out  .... but I'd need time for that... 
 ;-)

Thought that too. Small kernel, has X, would be a recompile.

There is a live-CD!!

it could be the basis for rebol/OS standalone appliance.

-> recompile to run rebol.

Interesting nameclash :) http://www.cs.vu.nl/orca/. Found it by 
looking for Amoeba. "We cooperate intensively with the  Globe  group 
of  Andrew Tanenbaum ([ast-:-cs-:-vu-:-nl])."

(one of Tanenbaums distributed osses).

I like the bontago here. http://www.digipen.edu/main/Award_Winning_Games

To our physics: Is it possible to build a little physics-engine for 
such things, and how about collision-detection? The 3d from the contest 
could be sufficient for a small version of this.

is http://www.minix3.orgdead?

Slashdotted? I got that link there. But when i looked it was still 
running.

I love the system requirements: 16 MB RAM and a 386.

that's pretty tough .. I don't think I'd be able to find a 386 these 
days

there's still a lot of embedded matchbox-sized hardware that use 
those

I hope www.minix3.org isn't running Minix, because that would be 
bad marketing

I hope it's not running a 386!

it's up again now

http://www.computer.org/portal/site/computer/menuitem.5d61c1d591162e4b0ef1bd108bcd45f3/index.jsp?&pName=computer_level1_article&TheCat=1005&path=computer/homepage/0506&file=cover1.xml&xsl=article.xsl&
<--- interesting link from that site.

Looks like they have a Pet emulator.

I had a gold fish once. Died after a week.

oh... THAT Pet.

a port of REBOL would double the amount of software available

the system can build itself, including the kernel, common drivers, 
and all servers (112 compilations and 11 links) in less than 6 seconds 
on a 2.2-GHz Athlon processor.
   Yeah! I'm starting to get interested.

The Problem with Threads http://www.eecs.berkeley.edu/Pubs/TechRpts/2006/EECS-2006-1.html

hmm, I read some doc when I was looking into liboop and libevent 
etc., somewhere on those sites, but each of groups tasks vs threads 
had some valid points ....

I have heard RT will go with threads, because those are optimised 
on multi-cpu environments?

Pekr, the article is not so much about which concurrency model is 
good or bad. The paper contentionis  that the emphasis on developing 
general-purpose languages that support concurrency is misplaced. 
Lee believes that a better approach is to develop what he calls "coordination 
languages", which focus on arranging sequential components written 
in conventional languages into some concurrent configuration (I suppose 
that piping in a Unix shell could be considered a limited coordination 
language). For concurrent programming to become mainstream, we must 
discard threads as a programming model. Nondeterminism should be 
judiciously and carefully introduced where needed, and it should 
be explicit in programs.

(Taken from LtU. More info on this topic here: http://lambda-the-ultimate.org/node/1481)

hmm - so even task concurency? concurency in general? then we should 
not have task? But how is that we accept multiplexing, which is kind 
of "concurrency"?

I will read pdf .... till the section where mathematic equations 
start :-)

Concurrency is fine. The problem is how to use it. Is it implicit 
or explicit. How you coordinate msg passing, pipes, shared state, 
etc.

so if Carl brings us task! based upon threads, and we don't need 
to care about threads related headaches in rebol level, then even 
threads are ok for us, right?

Depends on how they guarantee the order of execution. For examplie 
in Mozart/Oz you can have a concurrency that ensures that the sequence 
of computation is maintained, just like if was sequential even though 
is executed sequentially.

Sorry executed in paralell.

In C threads you do this buy using Locks and Semaphores.

In Erlang you use msg queues and process-id.

msg-queues would be on pair with rebol imo ... we already have event 
queue, we have blocks and their accessor functions ....

But msg-queues have some drawbacks.

hopefully Carl knows threads headaches (I do remember his long time 
ago post to ml :-) .... and will do it the right way ...