Squeak-dev March 2005

squeak-dev@lists.squeakfoundation.org

147 participants
281 discussions

Lego Mindstorms support: know any Java programmers with some spare time?
by Ned Konz 28 Mar '05

28 Mar '05

I have just discovered a cross-platform Java library that supports all the Lego Mindstorms RCX versions (including the USB towers!) under multiple OS platforms. http://www.escape.com/~dario/java/rcx/ I think that using this library to make an server program that Squeak could communicate with would be the easiest way to make cross-platform support for Mindstorms RCX units. Know any Java programmers who could make a program using this? My idea is to find someone to do this: Make a command-line Java application that will act as a server for RCX control and communications, letting one (or more) clients connect via TCP sockets. Then one or more Squeak images could connect to this "RCX server" over the net and talk to the Lego Mindstorms RCX brick(s) attached to that server machine. This would be much easier than re-implementing all that stuff in Squeak. -- Ned Konz http://bike-nomad.com/squeak/

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Harvesting Party Thursday March 31st 17:00 GMT
by Ken Causey 27 Mar '05

27 Mar '05

Just a reminder that the next Harvesting Party will take place between 17:00 (5 PM) and 21:00 (9 PM) GMT Thursday March 31st, 2005. As usual we will meet in #squeak on irc.freenode.net. More information about the #squeak IRC channel can be found at http://people.squeakfoundation.org/article/7.html Information about the Harvesting Party idea can be found at http://people.squeakfoundation.org/article/29.html If you have the time please attend and work toward the future of Squeak. The next seven parties are scheduled for 21:00 (09:00 PM) GMT Monday April 04, 2005 01:00 (01:00 AM) GMT Saturday April 09, 2005 05:00 (05:00 AM) GMT Wednesday April 13, 2005 09:00 (09:00 AM) GMT Sunday April 17, 2005 13:00 (01:00 PM) GMT Thursday April 21, 2005 17:00 (05:00 PM) GMT Monday April 25, 2005 21:00 (09:00 PM) GMT Friday April 29, 2005

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Mantis help needed. Please add some catagories to squeakland project.
by Peace Jerome 27 Mar '05

27 Mar '05

Squeakland has no subcatagories. So when I try to submit a report under squeakland my browser (IE5 on Mac OS9) sends something that can't be accepted. I've had similar problems when using squeakmap. If there is more than one catagory availible this would not happen. The browser just does not handle empty menu choices well. Thank you in advance. --Jerome Peace __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/

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lists on gmane by default ?
by Simon Michael 27 Mar '05

27 Mar '05

There are some really cool lists popping up which I'd like to drop in and out of, browse the archives of and search in a comfortable way, etc. Gmane is great for this. Adding a new list to gmane is a little tedious though; finding out details, getting approval of the owner etc. I think it would be nice if old and new public squeak lists were all mirrored on gmane by default. This also makes it easier to find the lists, which are distributed across various servers, to search them all at once, etc. Do you agree ? I think the easiest way would be for list owners and anyone creating a new list to do this as a routine step. I'll make a how-to if there isn't one already.

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Re: Squeak Headless
by Daniel Salama 26 Mar '05

26 Mar '05

On Mar 25, 2005, at 1:20 PM, squeak-dev-request(a)lists.squeakfoundation.org wrote: > Message: 9 > Date: Fri, 25 Mar 2005 16:41:13 +0100 > From: Jan B. Krej?? <janbkrejci(a)gmail.com> > Subject: Re: Squeak Headless > To: The general-purpose Squeak developers list > <squeak-dev(a)lists.squeakfoundation.org> > Message-ID: <1d6d304e050325074155815a79(a)mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > On Fri, 25 Mar 2005 10:38:24 -0500, Daniel Salama <dsalama(a)user.net> > wrote: >> I just read about it and looks like it does what I need. However, then >> the question I have is: can I take the linux squeak image, open it in >> my OS X Squeak VM, load the RFB package and then launch the image >> again >> from linux? > > sure, the image can be freely transferred between all the platforms > (at least everybody promises it :-) ) > > -- > .:jbk:. > Jan B. Krejci > Jan, So I installed the RFB package on the linux image which I loaded under my OSX and then transferred the image back to linux. When I launched squeak in linux, RFB didn't start up. So I tried doing some experiments in my OSX box. The problem I found was that when running Squeak, I can launch the RFB Server and connect to it with VNC with no problems. Then, I save and quit Squeak telling RFB to automatically launch RFB Server next time the image boots. The problem is that when I restart the image, RFB Server is no longer running and I have to start it manually. Therefore, when I copied the image to linux and launched squeak headless, RFB is not running and therefore I can't connect to it using VNC. How it is that you have your setup so that when you launch squeak as a start up service, it launches headless and with RFB Server started? Thanks, Daniel

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[ANN] Exupery 0.05 released.
by Bryce Kampjes 26 Mar '05

26 Mar '05

This version has PICs and a basic tree based optimiser. Sends are now about twice as fast as the interpreter. arithmaticLoopBenchmark 1591 compiled 231 ratio: 6.887 bytecodeBenchmark 2449 compiled 911 ratio: 2.688 sendBenchmark 1779 compiled 849 ratio: 2.095 gifConversion 1740 compiled 1582 ratio: 1.100 Cumulative Time 1863.571 compiled 729.140 ratio 2.556 Exupery '537250786 bytecodes/sec; 13510196 sends/sec' Interpreter '204800000 bytecodes/sec; 6390893 sends/sec' Installation instructions are here: http://minnow.cc.gatech.edu/squeak/3945 Bytecode performance has dropped a little as PICs were introduced. I suspect this is due to register pressure. The focus now is on making Exupery useful. 0.06 will have some performance tuning (faster bytecodes, and possibly sends) and a new faster and better implementation of at: and at:put. Releases should be more frequent, I'm trying to find the minimal useful feature set so feedback would be very useful. The key question is what is the minimal feature set needed to be useful. The performance tuning is driven by several goals. First, I suspect that the current architecture may be able to beat VW for bytecode performance. Second, after PICs I feel like working on something smaller. Third, the tuning will reduce register pressure which should make performance more predictable on the x86. Improving at: and at:put: was a major reason I put PICs in. The current implementation is modelled on the interpreter, it only supports arrays of objects and may be buggy. A PIC based implementation should be both faster and simpler. Bryce

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REMINDER: Harvesting Party Sunday March 27th 13:00 GMT
by Ken Causey 26 Mar '05

26 Mar '05

Just a reminder that the next Harvesting Party will take place between 13:00 (1 PM) and 17:00 (5 PM) GMT Sunday March 27th, 2005. As usual we will meet in #squeak on irc.freenode.net. More information about the #squeak IRC channel can be found at http://people.squeakfoundation.org/article/7.html Information about the Harvesting Party idea can be found at http://people.squeakfoundation.org/article/29.html If you have the time please attend and work toward the future of Squeak. The next seven parties are scheduled for 17:00 (05:00 PM) GMT Thursday March 31, 2005 21:00 (09:00 PM) GMT Monday April 04, 2005 01:00 (01:00 AM) GMT Saturday April 09, 2005 05:00 (05:00 AM) GMT Wednesday April 13, 2005 09:00 (09:00 AM) GMT Sunday April 17, 2005 13:00 (01:00 PM) GMT Thursday April 21, 2005 17:00 (05:00 PM) GMT Monday April 25, 2005

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3.7 Scamper Problem
by Joe Cortez 26 Mar '05

26 Mar '05

Scamper gives me error msg NameLookupFailure when I try to log onto the Internet on my WinXP PC. What could be the problem? I am a newbie to Squeak and Smalltalk. 3.6 Scamper works fine and so does 3.0. Thanks JC

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RE: Are what the janitors are doing, what needs to be done?
by Frank Shearar 26 Mar '05

26 Mar '05

Peace Jerome <peace_the_dreamer(a)yahoo.com> wrote: > > Are what the janitors are doing, what needs to be > done? > > The janitors are doing work that is useful and is that > the work that needs to get done to fix bugs and have a > better squeak? <snip> > When I first saw the janitor project I thought is > would be one I could join and add my bug fixing skill > to. But as I looked at the early stuff from the list I > realized this wasn't what the janitors intended to be. Janitors make sure that the people who need to hear about bugs, well, hear about the bugs. In other words, if you I find a bug in, say, Scamper, and send a bug report to the list, one of the janitors looks at the bug, tries to reproduce it, contacts me if there's a problem trying to reproduce the bug. If it turns out the bug's not a bug at all, the janitor closes the report (making sure I, the reporter, know it's closed). If the janitor can reprodce the bug, he or she adds it to Mantis and contacts the maintainer/s of the affected package (in our example, the Scamper maintainer/s). I (as a Janitor bystander) had made the same mistake, thinking of Janitors as sweeping up the first & whatnot. Ken corrected me (I hope you don't mind me quoting you, Ken?), saying this: "I don't agree with this. My goal for this team has nothing to do with fixing bugs or reviewing or any of that stuff. It is simply to get bug reports and fixes from those that have them to those that want them and can make use of them. A sorting function with some filtering included." In the longer term, the Janitors aim to make the process of Harvesting as easy as possible. That's not the same as actually harvesting! > Quite frankly, My perception is the janitors will > generate a lot of noise and result in very little of > the actual problems being solved. It will obscure the > fact that what is needed is problem solvers and bug > fixers and not just text processors. Too many bug reports languish in obscurity amongst the ~70 posts a day this list usually generates. We have a central bug database, Mantis, but right now you can't just hit "mail out a bug report" off your Debugger, say, and have it appear in Mantis. How do these bugs actually end up in Mantis? The Janitors. Who makes sure that bugs aren't re-reported, that they're reproducable (i.e., actual bugs and not the result of someone toasting their image), etc? The Janitors. Yes, they do produce a number of mails per bug report to the list (at least two: the [caught] and the [closed] mails). That's temporary, until we figure out the proper way for people to report bugs easily. > Right now most of my bug reports sit on mantis > unperused and unacknowledged. Often the resolution is > to leave them open. Sometimes if the fix is small > enough (cause the problem is small) somebody will > grasp that this can be added to squeak and it is. But > the bigger problem is making a better squeak. I think (being somewhat in this position) that if your fix is easy, small, etc., then mail someone you think is in charge. For external packages, that's easy: look up on SqueakMap for the maintainer. For in-image stuff (like Morphic) try mailing one of the noisier Morphic gurus and ask them to take a look at your fix. > There is a need for recruiting the people who will > take the bug reports and turn them in to fixes that > can be committed to squeak. I am not in a position > from where I sit to see how that will be done. I agree. And once we have those fixes, we need a group of people who can take those fixes and push them to the update stream. (Again, the external package fixes are easier: nag the maintainer of the package). Right now, I don't even know who can update the stream, for instance. I'm sure these issues have been exhaustively discussed before on the list. frank ******************************************************************* This email and attachments (if any) must be swept for viruses before opening. Their contents may be confidential or privileged and are intended solely for the named recipient. If you are not the intended recipient and you have received this email in error you must not read or use this email and should notify RNID on: +44 (0) 20 7296 8282. RNID, Registered Office 19-23 Featherstone Street, London EC1Y 8SL No. 454169 (England, Registered Charity No. 207720) ********************************************************************

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Squeak Headless
by Daniel Salama 25 Mar '05

25 Mar '05

Hi guys, I'm curious as to how to maintain a headless squeak server. If I start squeak on a linux machine upon boot up, is there a way that I can connect to that squeak VM remotely without having to run X on the linux host? If that's not possible, say that I am running X and VNC-server on the linux host and I VNC into the machine remotely, can I launch squeak from the VNC session and connect to the running headless squeak VM? If it's not possible to connect to the headless squeak VM, can I have two squeak VMs running out of the same image? For example, the headless squeak VM running, while the VNC session launches another squeak VM and makes changes to the image. Is it possible? Will the changes made in the image from one session be reflected immediately in the other, headless, squeak VM? Thanks, Daniel

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