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Re: [Pharo-project] Differential and Integral calculus in Pharo?

by Clara Allende

:) Eventually I would like to get my hands on circuits in smalltalk, but so far I'm much more interested in Magnetism (Faraday-Lenz, AmpÃ¨re... I would like to have those in my little program. We'll see) On 3 August 2012 09:55, S Krish <krishnamachari.sudhakar(a)gmail.com> wrote: > > Yes, I remember my love for Kirchoff's circuit laws years back..!!.. > > Electronics: > > A matrix <http://en.wikipedia.org/wiki/Matrix_(mathematics)> version of > Kirchhoff's current law is the basis of most circuit simulation software<http://en.wikipedia.org/wiki/Electronic_circuit_simulation>, > such as SPICE <http://en.wikipedia.org/wiki/SPICE> / PSPICE. Interesting > to have a interface to PSPICE as Tektronix had/ may still have in VW. Build > it out of Pharo, we could have the challenge to Cadence..with their C++ > ecquivalent.. > > Had an opportunity to see that VW stuff with its simulation of VLSI > circuits running up 60000 elements.. and complex simulations.. real time. > Cool stuff.. > > > On Thu, Aug 2, 2012 at 3:33 AM, Clara Allende <clari.allende(a)gmail.com>wrote: > >> Hi guys, after having exhausting four months of Physics lessons, I >> decided that would be fun to write a program to deal with Electricity >> problems :) (Yeah, I'm not a normal person :P) >> >> So, I need to make differential and integral calculus, are there any >> libraries to do so? Or any place that I can take a look at? >> >> Thanks in advance! >> >> Cheers >> > >

Aug. 3, 2012

Re: [Pharo-project] Differential and Integral calculus in Pharo?

by Dale Henrichs

Krish, Haha, funny that you mention that ... I wrote that software, called ADS (for Analog IC Design System), while working at Tektronix. That was the project that I cut my Smalltalk teeth on:) I started the project using the Tek 4404 in 1985. When Tektronix got out of the Smalltalk business (another story) I ported ADS to ObjectWorks. I left Tektronix in 1992 to go to work for Digitalk. The team at Tektronix kept working on ADS, porting it to the newer platforms over time ... The last time I checked ADS was still being used ... that was around 2005, I think. So it's had a long and productive lifetime. Dale ----- Original Message ----- | From: "S Krish" <krishnamachari.sudhakar(a)gmail.com> | To: Pharo-project(a)lists.gforge.inria.fr | Sent: Friday, August 3, 2012 5:55:28 AM | Subject: Re: [Pharo-project] Differential and Integral calculus in Pharo? | | | | Yes, I remember my love for Kirchoff's circuit laws years back..!!.. | | | Electronics: | | | | A matrix version of Kirchhoff's current law is the basis of most | circuit simulation software , such as SPICE / PSPICE. Interesting to | have a interface to PSPICE as Tektronix had/ may still have in VW. | Build it out of Pharo, we could have the challenge to Cadence..with | their C++ ecquivalent.. | | | Had an opportunity to see that VW stuff with its simulation of VLSI | circuits running up 60000 elements.. and complex simulations.. real | time. Cool stuff.. | | | | On Thu, Aug 2, 2012 at 3:33 AM, Clara Allende < | clari.allende(a)gmail.com > wrote: | | | Hi guys, after having exhausting four months of Physics lessons, I | decided that would be fun to write a program to deal with | Electricity problems :) (Yeah, I'm not a normal person :P) | | | So, I need to make differential and integral calculus, are there any | libraries to do so? Or any place that I can take a look at? | | | Thanks in advance! | | | Cheers |

Aug. 3, 2012

Re: [Pharo-project] Jenkins down

by Sean P. DeNigris

Sean P. DeNigris wrote > > let me know if there are any problems... (we can roll back if > necessary)... > Thanks to Christophe, it's up and running again... and (fingers crossed) it looks like the triggers may be working finally! Cheers, Sean -- View this message in context: http://forum.world.st/Jenkins-down-tp4642889p4642891.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

Aug. 3, 2012

[Pharo-project] Jenkins down

by Sean P. DeNigris

I updated Jenkins to 1.475 in hopes of nailing the trigger problem and it is currently down. Please give it a while to restart and let me know if there are any problems when it does (we can roll back if necessary)... Cheers, Sean -- View this message in context: http://forum.world.st/Jenkins-down-tp4642889.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

Aug. 3, 2012

Re: [Pharo-project] RE : [Preview] The Alternative Browser

by Goubier Thierry

Le 03/08/2012 16:20, Torsten Bergmann a Ã©crit : >> Have you seen Doug Ways Whisker browser? > > Yeah! Whisker's stacking idea was cool and it was > really nice alternative to traditional Smalltalk > browsers. I'm sure you can get it to run in an > older Squeak image to see it in action. The screenshots are very interesting to me, especially the type of information shown in the different trees. > Also note the Star Browser from the "old Squeak days" (TM) > which was also nice. It allowed you to add classes, morphs, > packages, objects, ... to the tree. > > This allowed to use it as package navigator, class browser, > inspector, diagram browser, ... > > http://wiki.squeak.org/squeak/2935 > > The main page has gone but you can find it in the > wayback machine with screenshots from the VisualWorks port: > > http://web.archive.org/web/20070418140440/http://homepages.ulb.ac.be/~rowuy… > > http://web.archive.org/web/20070428161513/http://homepages.ulb.ac.be/~rowuy… > > So you could group diagrams, packages, classes, ... in one > place. Thanks. This one is really interesting, because the way the menu is built in the Alt-Browser panes is exactly the same as shown in the Star Browser example. Now, if I could get the shortcuts to behave in the same way... (instance-based, tree selected-item customized keymaps is my target). Going from the existing Alt-Browser code to a Star-Browser reimplementation would be easy. (i.e. create a different view on each type of node in the tree). But not a complete class browser, please ! Oh well, only if you (a user), not me, really like it that way. However, I would consider far too heavy to have to built myself a complete tree of an existing system starting from an empty root; I find that package maintainers are doing a good job at it, and I want to reuse it. One more browser to keep in mind :-) Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des SystÃ¨mes Temps RÃ©el EmbarquÃ©s 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95

Aug. 3, 2012

[Pharo-project] RE : [Preview] The Alternative Browser

by Torsten Bergmann

> Have you seen Doug Ways Whisker browser? Yeah! Whisker's stacking idea was cool and it was really nice alternative to traditional Smalltalk browsers. I'm sure you can get it to run in an older Squeak image to see it in action. Also note the Star Browser from the "old Squeak days" (TM) which was also nice. It allowed you to add classes, morphs, packages, objects, ... to the tree. This allowed to use it as package navigator, class browser, inspector, diagram browser, ... http://wiki.squeak.org/squeak/2935 The main page has gone but you can find it in the wayback machine with screenshots from the VisualWorks port: http://web.archive.org/web/20070418140440/http://homepages.ulb.ac.be/~rowuy… http://web.archive.org/web/20070428161513/http://homepages.ulb.ac.be/~rowuy… So you could group diagrams, packages, classes, ... in one place. Bye T.

Aug. 3, 2012

Re: [Pharo-project] Memory usage

by StÃ©phane Ducasse

so this means that the comment of Fabrizio about the limit of 500 mb was only for windows. Stef > Not bad :) > > Doru > > On Fri, Aug 3, 2012 at 8:11 AM, jannik.laval <jannik.laval(a)gmail.com> wrote: >> >> On Aug 2, 2012, at 10:28 PM, StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> wrote: >> >>> >>> On Aug 2, 2012, at 10:17 PM, jannik.laval wrote: >>> >>>> Hi, >>>> >>>> I tried the VM included in Moose (moosetechnology.org) >>>> If I remember well, it is a cog vm. >>>> >>>> The maximal heap size is (precisely): 2138046463 bytes. >>>> Why this number ? I don't know. But I will need more than 2Gb. >>> >>> HI jannik >>> >>> was the system usable? >>> Because the problem with more memory is that you need specific GCes. >> >> It seems. >> I built a DSM on a 1300 packages system. >> >> Jannik >> >>> >>> Stef >>> >>> >>> >>>> >>>> I will try the 64bits vm, and see. >>>> >>>> Cheers, >>>> Jannik >>>> >>>> On Aug 1, 2012, at 7:51 PM, David T. Lewis <lewis(a)mail.msen.com> wrote: >>>> >>>>> Hi John, >>>>> >>>>> There is no regression in the interpreter VM ... well actually there was >>>>> about 6 months back, but I keep an eye on it and it's fixed again now :) >>>>> >>>>> The 32-bit interpreter VM will not fail on any 2GB or 4BG boundaries, >>>>> and an interpreter VM compiled for the 64-bit object format can handle >>>>> images greater than 7GB (probably much more, but my 8GB PC is too small >>>>> to do anything larger). >>>>> >>>>> I'm not sure if all of the necessary fixes are in place for the StackVM >>>>> and Cog. If not, I'm sure it will be addressed over time (it's just not >>>>> something that I have ever checked). >>>>> >>>>> I believe that Jannik is interested in running very large images, at >>>>> least on an experimental basis. For anything over a few GB, this requires >>>>> an interpreter VM and a 64-bit image. As you know, this is sure to run >>>>> into problems for the garbage collector as the number of objects >>>>> increases, but it would certainly be interesting to see how far the >>>>> current garbage collector can go in real world conditions before it >>>>> turns to mollasses. >>>>> >>>>> Dave >>>>> >>>>> >>>>> On Wed, Aug 01, 2012 at 08:57:02AM -0400, John McIntosh wrote: >>>>>> A few years back the interpreted virtual machine was fixed to allow an >>>>>> image to grow to the 4 GB limit. >>>>>> It is unclear to me if someone regressed the software to impose a 2GB limit >>>>>> again, or if the 2GB number >>>>>> mentioned is based on how things worked10 years ago? >>>>>> >>>>>> On Wed, Aug 1, 2012 at 5:01 AM, St?phane Ducasse >>>>>> <stephane.ducasse(a)inria.fr>wrote: >>>>>> >>>>>>> >>>>>>> On Jul 31, 2012, at 11:46 PM, johnmci wrote: >>>>>>> >>>>>>>> David Lewis and I spent a far amount of time a few years back to make >>>>>>> the 32 >>>>>>>> vm 4gb clean. So are you running on stale knowledge here, or does the vm >>>>>>>> crash when to goes over 2gb? >>>>>>> >>>>>>> sorry my english limit does not let me know understanding what you mean >>>>>>> exactly. >>>>>>> Jannik in the context of moose would like to see if we can have image >>>>>>> larger than 500 mb (on mac it should be possible). >>>>>>> >>>>>>> Stef >>>>>>> >>>>> >>>> >>>> --- >>>> Jannik Laval >>>> >>>> >>> >>> >> >> --- >> Jannik Laval >> >> > > > > -- > www.tudorgirba.com > > "Every thing has its own flow" >

Aug. 3, 2012

Re: [Pharo-project] Differential and Integral calculus in Pharo?

by S Krish

Yes, I remember my love for Kirchoff's circuit laws years back..!!.. Electronics: A matrix <http://en.wikipedia.org/wiki/Matrix_(mathematics)> version of Kirchhoff's current law is the basis of most circuit simulation software<http://en.wikipedia.org/wiki/Electronic_circuit_simulation>, such as SPICE <http://en.wikipedia.org/wiki/SPICE> / PSPICE. Interesting to have a interface to PSPICE as Tektronix had/ may still have in VW. Build it out of Pharo, we could have the challenge to Cadence..with their C++ ecquivalent.. Had an opportunity to see that VW stuff with its simulation of VLSI circuits running up 60000 elements.. and complex simulations.. real time. Cool stuff.. On Thu, Aug 2, 2012 at 3:33 AM, Clara Allende <clari.allende(a)gmail.com>wrote: > Hi guys, after having exhausting four months of Physics lessons, I decided > that would be fun to write a program to deal with Electricity problems :) > (Yeah, I'm not a normal person :P) > > So, I need to make differential and integral calculus, are there any > libraries to do so? Or any place that I can take a look at? > > Thanks in advance! > > Cheers >

Aug. 3, 2012

Re: [Pharo-project] RE : [Preview] The Alternative Browser

by Goubier Thierry

Le 03/08/2012 14:14, Douglas Brebner a Ã©crit : > On 02/08/2012 22:39, GOUBIER Thierry wrote: >> Thanks. >> >> For editing more than one method, you would need to open multiple browsers (as usual). They all share the same abstract tree, so any change in organisation done in one browser is seen by the others. >> > > Have you seen Doug Ways Whisker browser? It's a hierarchical browser > that can show multiple methods at once which might give you some useful > ideas. Some info is at > http://www.fit.vutbr.cz/study/courses/OMP/public/software/sqcdrom2/Packages… Thanks, it's an interesting take on the idea. In particular, this browser already has the view source + class comment at the same time, as well as multiple versions of a method. I'll keep this one in mind. I'll try to centralize things a bit on the Alt-Browser wiki. Thierry -- Thierry Goubier CEA list Laboratoire des Fondations des SystÃ¨mes Temps RÃ©el EmbarquÃ©s 91191 Gif sur Yvette Cedex France Phone/Fax: +33 (0) 1 69 08 32 92 / 83 95

Aug. 3, 2012

Re: [Pharo-project] RE : [Preview] The Alternative Browser

by Douglas Brebner

On 02/08/2012 22:39, GOUBIER Thierry wrote: > Thanks. > > For editing more than one method, you would need to open multiple browsers (as usual). They all share the same abstract tree, so any change in organisation done in one browser is seen by the others. > Have you seen Doug Ways Whisker browser? It's a hierarchical browser that can show multiple methods at once which might give you some useful ideas. Some info is at http://www.fit.vutbr.cz/study/courses/OMP/public/software/sqcdrom2/Packages…

Aug. 3, 2012