World: r3wp

well it's very nice to know that something is being developed in 
this too.. cooperative threading and async io is a lot already.. 
if there will be native threads it's just a very big additional bonus, 
(even factor, which is very progressive lang. in terms of core features 
and libs will have os level threads only in version 2.0 for example)

Steeve: I suppose some wild man :)

Steeve, not an active project yet. This was talked about when R3 
went internal alpha.

http://www.rebol.com/priorities.html<-- near the bottom. Just replace 
2007 with... 2012 or something. :-)

[virtual blocks] it would be more convenient to create a new scheme 
for fixed-size records. I don't want double the size of the current 
 scheme just for a new option.
(Most of important actors have to be rewritten)

Ok Henrik, it's only one of the zillions of Carl projects we'll never 
see ;-)

:-)

Have you tried any stress/performance tests on VBS yet?

Not really because one major bug on file scheme block me.

ticket #552 in curecode

Steeve virtual blocks scheme still at megashare? I've bad luck trying 
to download.

give me a convenient place and i post it

I can host it for you.

Steeve, if you paste the code to me privately, I can host it.

you don't have the first version i posted Henrik ?

nothing has changed currently

ok, I'll find it again.

ahah...

http://hmkdesign.dk/rebol/r3/idx.r

I'll post on rebdev too.

THNX 2 U both

ok, thanks

I would not currently assume that tasks will eventally correspond 
to threads at all, green or not. They might switch to the microprocess 
model. In any case we'll try to pick the best strategy for REBOL.

In the french BSS, Carl said that the tasks will not use threads.

*BBS

Yeah, threads have been discredited somewhat in the research community 
lately. Perhaps we could go all out with an Erlang-style green process 
model? That would be fun :)

The current public alpha uses OS threads, doesn't it?

And crashes them.

Almost-public :)

Brian, could you create a sub header in R3/protocols for the virtual 
block scheme ?

Sure.

and move all related msg please (Argh...) :)

Oh... excuse me Henrik, you requested it and you could do that too...

Done.

Steeve, I couldn't find how to in help, so I just asked. :-)

Public messages moved. I'll move the private messages when I figure 
out how to list them.

[VBS] Humm, as i stated, performances are bad currently with append, 
it took 1 minute to add 10000 values (166 values by second).

[VBS] But to fetch 10000 values randomly, it took only 0.01 sec (fast)

[VBS] Did you realize that 1 000 000 values can be fetched in a loop 
without bloating the memory in only 1 SEC

[VBS] SORRY, i made a wrong read, it took 1 sec to fetch 10 000 values 
not 1 000 000 but it's quite good too, no ?       -_-'

@BrianH : What are microprocesses ? you mean something like very 
lightweight processes that don't share common memory?

(lightweing in sense that they can be created and destroyed quickly 
and that there can be many of them)

Steeve, your performance measurements are about dead on with what 
Tretbase performance is.

http://www.rebol.net/cgi-bin/rebdev-web.r?msg=577

Here is a fetch of 10,000 records:

>> s: now/precise db/get test d t: now/precise
== 22-Jan-2009/12:13:34.534-6:00
>> difference t s
== 0:00:00.973


Pretty much about  1 second - similiar to what your seeing.  I don't 
think we can get much more performance out of REBOL than that.

Paul: is tretbase already intended for use or still in development?

It is still in development Janko but progressing.

Tretbase is going to be ported to C though.

to C, interesting

this is maybe a good idea to develop something in gihert level language 
to figure out all bits and pieces and algoritms, and then when you 
have a good picture port it into c