Squeak-dev June 2007

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120 participants
175 discussions

Berts Vortrag zum $100-Laptop
by Robert Hirschfeld 02 Jun '07

02 Jun '07

Hallo -- Hier nochmal zur Erinnnerung fuer alle Interessierten: Am kommenden Donnerstag (7. Juni, 16-17 Uhr) wird Bert am HPI einen Vortrag ueber den $100-Laptop halten. Mehr Information dazu findet Ihr hier: http://www.hpi.uni-potsdam.de/hpi/veranstaltungen/hpi-kolloquium/ http://www.hpi.uni-potsdam.de/hpi/veranstaltungen/hpi-kolloquium/dr_bert_fr… http://www.hpi.uni-potsdam.de/hpi/campus/anfahrt.html http://www.swa.hpi.uni-potsdam.de/ Viele Gruesse, Robert -- Robert Hirschfeld hirschfeld(a)acm.org www.hirschfeld.org

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Dynabook hw cost
by Brad Fuller 02 Jun '07

02 Jun '07

Any HW hackers here? Has anyone computed what a Dynabook would cost? First, I'm interested in understanding why true Dynabook hardware has not been available. Is it just too costly? I think we can trace the reasons why the software side of a Dynabook has not been fulfilled (although, I trust that Viewpoints NSF grant will close this gap). I thought that something more powerful and a bit bigger than the Nokia N800 but smaller than today's typical small notebook would be available by now. But I can't find one. I gotta believe that companies like Toshiba have investigated this thoroughly. And, if so, they've come to the conclusion that there is no business. Or if not, maybe by their bureaucratic blindness they have totally missed this market. Second, I'd like to understand what the cost of a Dynabook would actually be in today's dollars. I think a true Dynabook is long over due. Today's hardware doesn't suffice. Either it's too underpowered, or too bloated. Too small, or too heavy. (and all too expensive!) Any thoughts about the specs of the Dynabook and why we are still waiting? (hmm... is the XO is close?... wonder if parts will be available) (I still have my Sony magic cap. It was a bit too underpowered and bit too thick. and alas, no smalltalk) -- brad fuller

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ESUG 2007 conference registration is open
by Noury Bouraqadi 02 Jun '07

02 Jun '07

Dear Smalltalkers, Registrations to the ESUG 15th International Smalltalk Joint Conference is open. As for past years, you can register on-line and pay either by bank transfer or credit card. More on the conference web site: http://www.esug.org/conferences/2007 Looking forward to meeting you at Lugano, Noury ------------------------------------------------------------------ Dr. Noury Bouraqadi - Enseignant/Chercheur Responsable de l'option I.S.I.C. ARMINES - Ecole des Mines de Douai - Dept. I.A. http://csl.ensm-douai.fr/noury European Smalltalk Users Group Board http://www.esug.org ------------------------------------------------------------------

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Alternative Thread Schedulers
by J J 01 Jun '07

01 Jun '07

Hi all, I just read http://wiki.squeak.org/squeak/5682 that Tim (I think it was) mentioned, and found the part about doing alternative scheduling with a higher priority thread interesting. The question I had was, in the example it says the high priority process can use Delay's to sleep while other processes are running, but what happens when a process does IO? Doesn't that cause the process to yield? What I am thinking is, if I were to make a scheduler process that manages all running processes, how can he find out every situation where a process yields in some way? It would be ideal if there was a Delay millisecondsOrUntilInterupt: type message. Thanks, Jason _________________________________________________________________ More photos, more messages, more storageget 2GB with Windows Live Hotmail. http://imagine-windowslive.com/hotmail/?locale=en-us&ocid=TXT_TAGHM_migrati…

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Is this a buglet? (SmallInteger>>printString related)
by Göran Krampe 01 Jun '07

01 Jun '07

Hi! In playing around with SmallInteger>>printString (see bugs.squeak.org/view.php?id=6512) I tested this code for calculating the length of the String: self log truncated + 1 ...but that doesn't work. The current code in my ChangeSet uses an unrolled binary search (nested ifs) which is 7x faster (#decimalDigitLength) so the above code is not something we would like to use, but I still wonder why it fails and what I would have needed to do about it to get it to work: 999 log truncated ===> 2 As expected. 1000 log ===> 3.0 As expected. 1000 log truncated ===> 2 Eh, what? Not expected! ...ok, yes, I know - Floats are the "tar pits of hell" when it comes to expected results - but... can someone answer if this is a bug or if I simply can't expect this code to work? regards, Göran PS. Strongtalk does in fact do SmallInteger>>printString almost exactly like my enhancement does (didn't peek, promise!) but does it around 5x faster than Squeak. :) I fired it up to look at how it does #log but log wasn't implemented. On the other hand Bryce tested Exupery on my code and it made a real difference - at least 2x better (not sure if he only tested printString). And then he mentioned an obvious improvement in Exupery that would make it even faster. Interesting method for comparing!

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