Moose-dev March 2017

moose-dev@list.inf.unibe.ch

20 participants
26 discussions

Re: Student of Stéphane Ducasse: Roassal project
by Serge Stinckwich 03 Mar '17

03 Mar '17

This is better to answer on the mailing-list. Regards, On Fri, Mar 3, 2017 at 3:30 PM, said yebbah <said.yebbah(a)hotmail.com> wrote: > Bonjour, > > > First we thank you in advance for your reply, it seems an interesting > suggestion project, we'll try to start doing the same thing with Roassel > but for the moment we're beginners and we have only 2 weeks, we wish that > you help us for the next time. > > > this's list email of other memebers group: > > hamid.lafredi(a)etudiant.univ-lille1.fr > > martin.bigand(a)etudiant.univ-lille1.fr > > > > > > > On Fri, Mar 3, 2017 at 2:34 PM, said yebbah <said.yebbah(a)hotmail.com> > wrote: > > Hello, > > Bonjour, > > > We‘re a group of 3 students from a course with Stéphane Ducasse in > > university of Lille 1, > > and we’re beginners in Pharo and for the next 2 weeks we have to work on > an > > open source project. > > we choose Roassal project. So we would like to know what's the prupose of > > ideas that we've to do ? > > In fact, in the moments we're at the point of discovering Roassal. > > Welcome in the community ! > > I have one idea for a small project for students. > I give this link to my students for a lecture at Paris 6 University, > is it possible to do the same with Roassal: > https://github.com/SergeStinckwich/ARE-UPMC/blob/ > master/ARE-DYNAMIC/fiche3.ipynb > and if not how you fix that ? > > Thank you. > > -- > Serge Stinckwich > UCN & UMI UMMISCO 209 (IRD/UPMC) > Every DSL ends up being Smalltalk > http://www.doesnotunderstand.org/ > Serge Stinckwich - Home | #DNU <http://www.doesnotunderstand.org/> > www.doesnotunderstand.org > Welcome to #DNU! #DNU is the home page of Serge Stinckwich, full-time > computer scientist and part-time Smalltalk evangelist. Important We are > currently conducting a ... > > > _______________________________________________ > Moose-dev mailing list > Moose-dev(a)list.inf.unibe.ch > https://www.list.inf.unibe.ch/listinfo/moose-dev > Moose-dev Info Page - unibe.ch > <https://www.list.inf.unibe.ch/listinfo/moose-dev> > www.list.inf.unibe.ch > To see the collection of prior postings to the list, visit the Moose-dev > Archives. Using Moose-dev: To post a message to all the list members, send > ... > > > -- Serge Stinckwich UCN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

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Different versions of Moose 6.0
by Serge Stinckwich 03 Mar '17

03 Mar '17

Dear all, apparently Moose 6.0 version available on the website: http://www.moosetechnology.com/ is not the same version used on SmalltalkCI. 1st one is : Pharo5.0 Latest update: #50761 and the other one: Pharo5.0 Latest update: #50770 Is it possible to have same version on both sides ? :-) Because we have some code that only fails on the CI and this source of confusion. Regards, -- Serge Stinckwich UCN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

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Re: [Pharo-dev] Growing large images: the case of Moose models
by Blondeau Vincent 03 Mar '17

03 Mar '17

Thanks Eliot for the implementation of the new compactor! Just to add a piece of information: the mse imported have a size of 40Mb. Cheers, Vincent De : Pharo-dev [mailto:pharo-dev-bounces@lists.pharo.org] De la part de Clément Bera Envoyé : vendredi 3 mars 2017 11:56 À : Discusses Development of Pharo Objet : [Pharo-dev] Growing large images: the case of Moose models Hello everyone, This morning I investigated with Vincent Blondeau a problem reported by the Moose community a while ago: loading Moose model is slower in Spur (Pharo 5+) than in pre-Spur (Pharo 4 and older). In general, this problem was present for anyone growing images to a significant size. To investigate the problem, we loaded a 200Mb[3] Moose model on a 250Mb image, growing the image to 450Mb. Loading such a model takes 2 minutes in Spur and 1m30s in pre-Spur VMs. Using the stable Pharo VM, the analysis results were the following: - total time spent to load the Model: 2 minutes - time spent in full GC: 1 minute (4 fullGCs) - time spent in scavenges[1]: 15 seconds On the 2 minutes spent, we have 50% of the time spent in full GCs, 12.5% in scavenges, 37.5% executing code. We then used the latest VM that features the new compactor (VM from beginning of March 2017 and over). The full GC execution time went down from 1 minute to 2 seconds. In addition, we increased the size of Eden[2] from 4Mb to 12Mb. Time spent in scavenges decreased from 15 seconds to 5 seconds. Overall, loading the model is now taking ~50 seconds instead of 2 minutes. To increase Eden size, one needs to run a script similar to: | currentEdenSize desiredEdenSize | currentEdenSize := Smalltalk vm parameterAt: 44. desiredEdenSize := currentEdenSize * 4. Smalltalk vm parameterAt: 45 put: desiredEdenSize. And then restart the image. I hope this report can be useful for some of you. I will try to make a blog post out of it, detailing other GC settings one can change from the image to improve performance. Best, Clement [1] A scavenge is basically the garbage collection of only young objects [2] Eden is basically the space where objects are initially allocated. [3] All numbers in the report are order of magnitudes and not precise numbers !!!************************************************************************************* "Ce message et les pièces jointes sont confidentiels et réservés à l'usage exclusif de ses destinataires. Il peut également être protégé par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir immédiatement l'expéditeur et de le détruire. L'intégrité du message ne pouvant être assurée sur Internet, la responsabilité de Worldline ne pourra être recherchée quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne saurait être recherchée pour tout dommage résultant d'un virus transmis. This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Worldline liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted.!!!"

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Segmentation fault on Moose 6.1 Build
by Blondeau Vincent 02 Mar '17

02 Mar '17

Hi, The latest builds of the Moose6.1 image are failing due to a segmentation fault. Here is the link to the last build: https://ci.inria.fr/moose/job/moose-6.1/550/console How can we fix this? Thanks in advance, Cheers, Vincent !!!************************************************************************************* "Ce message et les pi?ces jointes sont confidentiels et r?serv?s ? l'usage exclusif de ses destinataires. Il peut ?galement ?tre prot?g? par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir imm?diatement l'exp?diteur et de le d?truire. L'int?grit? du message ne pouvant ?tre assur?e sur Internet, la responsabilit? de Worldline ne pourra ?tre recherch?e quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'exp?diteur ne donne aucune garantie ? cet ?gard et sa responsabilit? ne saurait ?tre recherch?e pour tout dommage r?sultant d'un virus transmis. This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Worldline liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted.!!!"

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Re: [Pharo-dev] Re: Segmentation fault on Moose 6.1 Build
by Tudor Girba 02 Mar '17

02 Mar '17

Hmm, it looks like something changed and the build is now yellow. Does anyone have the time to check this mysterious behavior? Cheers, Doru > On Mar 2, 2017, at 1:24 PM, Pavel Krivanek <pavel.krivanek(a)gmail.com> wrote: > > I will try to make some easier way to reproduce it and open an issue > > -- Pavel > > 2017-03-02 11:58 GMT+01:00 Pavel Krivanek <pavel.krivanek(a)gmail.com>: > Hm, I haven't check the time of the failing build... Yes, it will be related... > > 2017-03-02 11:51 GMT+01:00 Tudor Girba <tudor(a)tudorgirba.com>: > Except for tiny changes in Athens in 60419 :) > > Doru > > > > On Mar 2, 2017, at 11:33 AM, Pavel Krivanek <pavel.krivanek(a)gmail.com> wrote: > > > > On image side nothing relevant happened in 60418 where it started to fail. > > > > -- Pavel > > > > 2017-03-02 11:31 GMT+01:00 Blondeau Vincent <vincent.blondeau(a)worldline.com>: > > I heard that the gc compactor have changed. > > > > Cheers, > > Vincent > > > > > -----Message d'origine----- > > > De : Moose-dev [mailto:moose-dev-bounces@list.inf.unibe.ch] De la part de > > > Tudor Girba > > > Envoyé : jeudi 2 mars 2017 11:29 > > > À : Pharo Development List > > > Cc : Moose-related development > > > Objet : [Moose-dev] Re: [Pharo-dev] Segmentation fault on Moose 6.1 Build > > > > > > Hi, > > > > > > Was there a change related to the stable VM? > > > > > > Cheers, > > > Doru > > > > > > > > > > On Mar 2, 2017, at 11:23 AM, Blondeau Vincent > > > <vincent.blondeau(a)worldline.com> wrote: > > > > > > > > Hi, > > > > > > > > The latest builds of the Moose6.1 image are failing due to a segmentation > > > fault. > > > > Here is the link to the last build: > > > > https://ci.inria.fr/moose/job/moose-6.1/550/console > > > > > > > > How can we fix this? > > > > > > > > Thanks in advance, > > > > > > > > Cheers, > > > > Vincent > > > > > > > > > > > > > > > !!!******************************************************** > > > *********** > > > > ****************** "Ce message et les pièces jointes sont > > > > confidentiels et réservés à l'usage exclusif de ses destinataires. Il peut > > > également être protégé par le secret professionnel. Si vous recevez ce > > > message par erreur, merci d'en avertir immédiatement l'expéditeur et de le > > > détruire. L'intégrité du message ne pouvant être assurée sur Internet, la > > > responsabilité de Worldline ne pourra être recherchée quant au contenu de > > > ce message. Bien que les meilleurs efforts soient faits pour maintenir cette > > > transmission exempte de tout virus, l'expéditeur ne donne aucune garantie à > > > cet égard et sa responsabilité ne saurait être recherchée pour tout dommage > > > résultant d'un virus transmis. > > > > > > > > This e-mail and the documents attached are confidential and intended > > > solely for the addressee; it may also be privileged. If you receive this e-mail in > > > error, please notify the sender immediately and destroy it. As its integrity > > > cannot be secured on the Internet, the Worldline liability cannot be triggered > > > for the message content. Although the sender endeavours to maintain a > > > computer virus-free network, the sender does not warrant that this > > > transmission is virus-free and will not be liable for any damages resulting > > > from any virus transmitted.!!!" > > > > <dump.txt> > > > > > > -- > > > www.tudorgirba.com > > > www.feenk.com > > > > > > “Live like you mean it." > > > > > > _______________________________________________ > > > Moose-dev mailing list > > > Moose-dev(a)list.inf.unibe.ch > > > https://www.list.inf.unibe.ch/listinfo/moose-dev > > > > !!!************************************************************************************* > > "Ce message et les pièces jointes sont confidentiels et réservés à l'usage exclusif de ses destinataires. Il peut également être protégé par le secret professionnel. Si vous recevez ce message par erreur, merci d'en avertir immédiatement l'expéditeur et de le détruire. L'intégrité du message ne pouvant être assurée sur Internet, la responsabilité de Worldline ne pourra être recherchée quant au contenu de ce message. Bien que les meilleurs efforts soient faits pour maintenir cette transmission exempte de tout virus, l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne saurait être recherchée pour tout dommage résultant d'un virus transmis. > > > > This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Worldline liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted.!!!" > > > > -- > www.tudorgirba.com > www.feenk.com > > "Yesterday is a fact. > Tomorrow is a possibility. > Today is a challenge." > > > > > > > -- www.tudorgirba.com www.feenk.com "Beauty is where we see it."

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Google Summer of Code 2017: Call for students for Pharo Consortium
by Serge Stinckwich 01 Mar '17

01 Mar '17

*** Please forward this message to students that might be interested *** Heartiest Congratulations ! Pharo Consortium has been selected as a mentor organisation for Google Summer of Code 2017. Google Summer of Code is a global program focused on introducing students to open source software development. Students work on a 3 month programming project with an open source organisation during their break from university. Read more at https://summerofcode.withgoogle.com/ Pharo is a pure object-oriented programming language and a powerful environment, focused on simplicity and immediate feedback (think IDE and OS rolled into one). Everything in Pharo is an object. The entire syntax of Pharo fits on a postcard coding can be done directly in the debugger. Pharo has super cool tools that empower you and make you super efficient. Pharo's goal is to deliver a clean, innovative, free and open-source immersive environment. By providing a stable and small core system, excellent developing tools, and maintained releases, Pharo is an attractive platform to build and deploy mission critical applications. Pharo fosters a healthy ecosystem of both private and commercial contributors who advance and maintain the core system and its external packages. More information about Pharo is available here: http://www.pharo.org/ We invite all the prospective eligible students to code their summer away with Pharo Consortium. Student Responsibilities ...to your Mentor - Submit quality work - Regularly communicate work completed, what you intend to do next, and blockers - Ask for help when something is preventing you from achieving a goal - Give indication that you are alive and working daily (GSoC) - Re-evaluate work scope when significantly ahead of expectations (GSoC) - Communicate with your mentor AND the broader community - Inform when work capacity will be reduced, as early as possible (e.g., family, health, other work) (GSoC) - Listen and respond to feedback ...to the Org Admin Let them know when there are - Interaction issues with any mentor or community member - Significant disagreements involving your work or changes to your work plan Read more about responsibilities here: https://developers.google.com/open-source/gsoc/help/responsibilities Hence, we invite enthusiastic student developers contributors to work with Pharo Consortium for GSoC 2017. 1. A first list of projects are available here : http://gsoc.pharo.org/ but more can be found by interacting with mentors from the Pharo community. 2. Join dedicated channels, #gsoc-students for general interactions with students on Pharo slack. In order to get an invitation for pharoproject.slack.com visit the URL here: http://slackinvites.pharo.org/ Discuss with mentors about the complexity and skills required for the different projects. 3. Please help fix bugs, open relevant issues, suggest changes, additional features, help build a roadmap, and interact with mentors on mailing list and/or slack to get a better insight into projects. Better the contributions, Better are the chances of selection. Before applying: * Knowledge about OOP * Basic idea about Pharo & Smalltalk syntax and ongoing projects * Past experience with Pharo & Smalltalk * Interaction with organisation You can start with the Pharo MOOC : http://files.pharo.org/mooc/ Guidelines for Proposal: * Introduction: Clearly defined problem. Current state of things. Issues you wish to solve and why. Conclude with solution. * Project goals: Format it like a list. Propose a clear list of deliverables, explaining exactly what you promise to do and what you do not plan to do. “Future developments” can be mentioned. It is better to promise less and deliver more than to promise a lot and then fall short. * Implementation: Longer and more detailed. Provide technical details, show that you understand the technology and illustrate key technical elements of your proposed solution. * Timeline: Make it weekly. Set goals for each week. Be upfront about other commitments, including exams, classes, travel, internships, jobs, etc. * Benefits to Community: Make your case a benefit to the organization. * Related Work: Research and write how the project fits into the target organization. Explain related works, similarities & differences. * About me: Provide full contact information, email addresses, websites, IRC nick, postal address and telephone. Write a few sentences about yourself, previous experiences and why you think you’re the best for this job. Submit your proposal early. Keep it short. Include necessary information. Get it reviewed in the mailing list or Slack channel before submitting it. The deadline for submitting your proposal is March 20th to April 3rd on https://summerofcode.withgoogle.com/ Looking forward to great talent joining our organisation this summer. Warm Regards Pharo Organisation Admins (Alexandre Bergel, Jigyasa Grover, Serge Stinckwich & Yuriy Tymchuk)

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Moose-dev March 2017