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Array sum. is very slow
by Jimmie Houchin Jan. 12, 2022

Jan. 12, 2022

I have written a micro benchmark which stresses a language in areas which are crucial to my application. I have written this micro benchmark in Pharo, Crystal, Nim, Python, PicoLisp, C, C++, Java and Julia. On my i7 laptop Julia completes it in about 1 minute and 15 seconds, amazing magic they have done. Crystal and Nim do it in about 5 minutes. Python in about 25 minutes. Pharo takes over 2 hours. :( In my benchmarks if I comment out the sum and average of the array. It completes in 3.5 seconds. And when I sum the array it gives the correct results. So I can verify its validity. To illustrate below is some sample code of what I am doing. I iterate over the array and do calculations on each value of the array and update the array and sum and average at each value simple to stress array access and sum and average. 28800 is simply derived from time series one minute values for 5 days, 4 weeks. randarray := Array new: 28800. 1 to: randarray size do: [ :i | randarray at: i put: Number random ]. randarrayttr := [ 1 to: randarray size do: [ :i | "other calculations here." randarray sum. randarray average ]] timeToRun. randarrayttr. "0:00:00:36.135" I do 2 loops with 100 iterations each. randarrayttr * 200. "0:02:00:27" I learned early on in this adventure when dealing with compiled languages that if you donât do a lot, the test may not last long enough to give any times. Pharo is my preference. But this is an awful big gap in performance. When doing backtesting this is huge. Does my backtest take minutes, hours or days? I am not a computer scientist nor expert in Pharo or Smalltalk. So I do not know if there is anything which can improve this. However I have played around with several experiments of my #sum: method. This implementation reduces the time on the above randarray in half. sum: col | sum | sum := 0. 1 to: col size do: [ :i | Â Â Â Â sum := sum + (col at: i) ]. ^ sum randarrayttr2 := [ 1 to: randarray size do: [ :i | "other calculations here." Â Â Â ltsa sum: randarray. ltsa sum: randarray ]] timeToRun. randarrayttr2. "0:00:00:18.563" And this one reduces it a little more. sum10: col | sum | sum := 0. 1 to: ((col size quo: 10) * 10) by: 10 do: [ :i | Â Â Â Â sum := sum + (col at: i) + (col at: (i + 1)) + (col at: (i + 2)) + (col at: (i + 3)) + (col at: (i + 4)) Â Â Â Â Â Â Â Â + (col at: (i + 5)) + (col at: (i + 6)) + (col at: (i + 7)) + (col at: (i + 8)) + (col at: (i + 9))]. ((col size quo: 10) * 10 + 1) to: col size do: [ :i | Â Â Â Â sum := sum + (col at: i)]. ^ sum randarrayttr3 := [ 1 to: randarray size do: [ :i | "other calculations here." Â Â Â ltsa sum10: randarray. ltsa sum10: randarray ]] timeToRun. randarrayttr3. "0:00:00:14.592" It closes the gap with plain Python3 no numpy. But that is a pretty low standard. Any ideas, thoughts, wisdom, directions to pursue. Thanks Jimmie

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Helping with documentation
by Jimmie Houchin Jan. 12, 2022

Jan. 12, 2022

I am going to be working my way through some Pharo docs. As I read the books I sometimes see some English that can be improved. What is the proper procedure for doing so? Any pointers to documents to help with this greatly appreciated. Thanks. Jimmie

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[Pharo Days'22] Call for participation
by Guillermo Polito Jan. 10, 2022

Jan. 10, 2022

-------------------------------------------------------------------------------- Pharo Days March 3rd and 4th, Lille, France https://days.pharo.org/ -------------------------------------------------------------------------------- Do not miss the opportunity to meet Pharo and its community! PharoDays is a unique event where you can meet other Pharoers, discover latest advances, and share your experience. Hand-ons sessions are there to help you getting started on advance topics. Follow the "Show us your project" sessions to get immersed in Pharo lively community. This year, PharoDays is a mix of technical talks and hand-ons. Come to join business chat and enjoy friendly atmosphere and discuss with experts. Do you have a project to show? We are looking for presentations to fill up our schedule! Presentations will have 30' slots. Contact the Pharo board at <board(a)pharo.org> before January 21st with your ideas! Are you a student wanting to show your research project? We are going to organize poster sessions so you can show your work to the community! Prepare your posters, and contact us for a slot at <board(a)pharo.org>!

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This week (01/2022) on the Pharo Issue Tracker
by Marcus Denker Jan. 7, 2022

Jan. 7, 2022

After christmas holidays, work started again this week: 5 PRs merged, 8 issues fixed: FIXES ===== - Fixes #10263 Setting minimum size for browser window #10686 https://github.com/pharo-project/pharo/pull/10686 - 9697-FTExamplesexampleTree1-menu-item-Expand-All-freezes-image #10630 https://github.com/pharo-project/pharo/pull/10630 - Fixes pharo-spec/Spec#1219: Ticking list should scroll to the next ticked items instead of scrolling up #10685 https://github.com/pharo-project/pharo/pull/10685 Improvements ============ - Add TFProcessLocalWorker #10668 https://github.com/pharo-project/pharo/pull/10668 - add-SystemDictionary-loopUpVarDeclare #10683 https://github.com/pharo-project/pharo/pull/10683

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Re: FileDoesNotExistException - FileBrowser opening on Mac M1
by Stewart MacLean Dec. 26, 2021

Dec. 26, 2021

Hi All, This is my first post! Sadly it is to report an issue with the FileBrowser on the Mac M1. I am encountering this exception - FileDoesNotExistException. These are the culprits: [image: image.png] I have seen a similar error reported on Windows. Looks like Pharo can't access the attributes of these files? https://github.com/pharo-project/pharo/issues/3571 I'm exploring Pharo with a view to migrating my VisualWorks project of many years, as support for M1 looks like it might be a way off, so not off to a good start! I managed to work around it, by deleting these two files (not from the disk!) in the debugger, before it tried to fetch the attributes. Interestingly, when in the debugger it showed N/A and 0 for the attributes, as these are system files I'm guessing. Thanks, Stewart ==================================================================== Pharo 9.0.0 Build information: Pharo-9.0.0+build.1573.sha.0e09d756fc99383cbb498565200d9e5e9841ce11 (64 Bit) Mac Mini M1 (2020) Monterey 12.0.1 File class>>signalError:for: File class>>primFileAttribute:number: File class>>fileAttribute:number: MacStore(DiskStore)>>sizeOf: FileSystem>>sizeOf: FileReference>>size FileReference(AbstractFileReference)>>humanReadableSize FileListGridNode>>fileSize [:node :cont | node perform: self rowMorphGetSelector] in MorphTreeColumn>>rowMorphGetterBlock in Block: [:node :cont | node perform: self rowMorphGetSelec...etc... MorphTreeColumn>>rowMorphFor: [:col | | v | v := col rowMorphFor: complexContents. controls add: v. col -> v] in MorphTreeNodeMorph>>buildRowMorph in Block: [:col | | v |... OrderedCollection>>collect: MorphTreeNodeMorph>>buildRowMorph MorphTreeNodeMorph>>initRow MorphTreeNodeMorph>>initWithContents:prior:forList:indentLevel: [:item :idx | priorMorph := self indentingItemClass new initWithContents: item prior: priorMorph forList: self indentLevel: newIndent. firstAddition ifNil: [firstAddition := priorMorph]. morphList add: priorMorph. "Was this row expanded ? if true -> expand it again " ((item hasEquivalentIn: expandedItems) or: [priorMorph isExpanded]) ifTrue: [priorMorph isExpanded: true. priorMorph addChildrenForList: self addingTo: morphList withExpandedItems: expandedItems]] in MorphTreeMorph>>addMorphsTo:from:withExpandedItems:atLevel: in Block: [:item :idx | ... Array(SequenceableCollection)>>withIndexDo: Array(Collection)>>doWithIndex: MorphTreeMorph>>addMorphsTo:from:withExpandedItems:atLevel: MorphTreeMorph>>addSubmorphsFromNodeList:previouslyExpanded: MorphTreeMorph>>addSubmorphsFromNodeList MorphTreeMorph>>buildContents FileListGrid>>treeMorph FileList>>morphicGrid FileList>>grid FileList>>updateFileList FileList>>reference: FileList>>directory: FileList>>initialize FileList class(Behavior)>>new On Thu, Dec 23, 2021 at 4:23 PM Stewart MacLean <stewart(a)xtra.co.nz> wrote: > Hi All, > > This is my first post! Sadly it is to enquire about an issue with the > FileBrowser on the Mac M1. > > I am encountering this exception - FileDoesNotExistException. > > I appears to be opening on just two files: > > [image: image.png] > > I have seen a similar error reported on Windows. Looks like Pharo can't > access the attributes of these files? > https://github.com/pharo-project/pharo/issues/3571 > > I'm exploring Pharo with a view to migrating my VisualWorks project of > many years, as support for M1 looks like it might be a way off, so not a > good start! > > Any help appreciated. > > Thanks, > > Stewart > > ==================================================================== > Pharo 9.0.0 > Build information: > Pharo-9.0.0+build.1573.sha.0e09d756fc99383cbb498565200d9e5e9841ce11 (64 Bit) > > Mac Mini M1 (2020) > Monterey 12.0.1 > > File class>>signalError:for: > File class>>primFileAttribute:number: > File class>>fileAttribute:number: > MacStore(DiskStore)>>sizeOf: > FileSystem>>sizeOf: > FileReference>>size > FileReference(AbstractFileReference)>>humanReadableSize > FileListGridNode>>fileSize > [:node :cont | node perform: self rowMorphGetSelector] in > MorphTreeColumn>>rowMorphGetterBlock in Block: [:node :cont | node perform: > self rowMorphGetSelec...etc... > MorphTreeColumn>>rowMorphFor: > [:col | | v | > v := col rowMorphFor: complexContents. > controls add: v. > col -> v] in MorphTreeNodeMorph>>buildRowMorph in Block: [:col | | v |... > OrderedCollection>>collect: > MorphTreeNodeMorph>>buildRowMorph > MorphTreeNodeMorph>>initRow > MorphTreeNodeMorph>>initWithContents:prior:forList:indentLevel: > [:item :idx | > priorMorph := self indentingItemClass new > initWithContents: item > prior: priorMorph > forList: self > indentLevel: newIndent. > firstAddition > ifNil: [firstAddition := priorMorph]. > morphList add: priorMorph. > "Was this row expanded ? if true -> expand it > again " > ((item hasEquivalentIn: expandedItems) > or: [priorMorph isExpanded]) > ifTrue: [priorMorph isExpanded: true. > priorMorph > addChildrenForList: self > addingTo: morphList > withExpandedItems: expandedItems]] in > MorphTreeMorph>>addMorphsTo:from:withExpandedItems:atLevel: in Block: > [:item :idx | ... > Array(SequenceableCollection)>>withIndexDo: > Array(Collection)>>doWithIndex: > MorphTreeMorph>>addMorphsTo:from:withExpandedItems:atLevel: > MorphTreeMorph>>addSubmorphsFromNodeList:previouslyExpanded: > MorphTreeMorph>>addSubmorphsFromNodeList > MorphTreeMorph>>buildContents > FileListGrid>>treeMorph > FileList>>morphicGrid > FileList>>grid > FileList>>updateFileList > FileList>>reference: > FileList>>directory: > FileList>>initialize > FileList class(Behavior)>>new > > >

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CLAP - how to get instance of command without executing it
by bajger＠gmail.com Dec. 25, 2021

Dec. 25, 2021

Hi Pharoers! I have following problem in CLAP and would be glad to get your guidance: I have following method on command class (sub-class of ClapApplication):\ `PhLImageKillCliCommand>>osShellCmdString` `(arguments at: #all) value ` ` ifTrue: [ ^ (self killImageCmdStringFrom: nil) ]. ` `^ self killImageCmdStringFrom: self imageName` And I want to implement unit test, that would test expected output of this method. As you can see, implementation is dependent on arguments attribute #all. And here is a problem in unit test: `testOsShellCmdString`\ `| killCliCommand aMatch| aMatch := (context arguments: #('launcher' 'image' 'kill' '--all')) match. killCliCommand := PhLImageKillCliCommand new. killCliCommand setArguments: aMatch.` `self assert: killCliCommand osShellCmdString equals: ''.` This doesn't work, since `arguments at: #all` gives NotYetImplemented exception. So I don't know, how to "wire" toghether instance of command (without executing it) and needed arguments (a match). Any advice on this? ![ObrÃ¡zek](https://media.discordapp.net/attachments/819245127310114886/922498381358723123/unknown.png)

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pharo9 tools moldability
by Danil Osipchuk Dec. 20, 2021

Dec. 20, 2021

Dear all, Being a long time smalltalk user (meaning I'm crafting tools for my own usage for domains I'm working with) I always relied upon the environment itself to interact with models to spare time creating user interfaces. Besides plain inspectors I used metafacilities where possible -- seaside, then omnibrowser and lately glamour toolkit in pharo8. Now it seems the glamourous core is not part of pharo9 anymore. Meanwhile pharo9 looks increasingly neat and I would like to make a transition but having tools in pharo8 holds me back. I would be grateful for any pointers to help me to get started with the moldable inspectors pharo9 - papers, talks, online discussions, etc. I can likely figure it out on my own, but having an overall understanding of the approach concept would save an effort and shorten the trial and error phase. (maybe I'm overcomplicating it and just having browsed around inspector code pragmas is enough to get started) regards, Danil

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This week (50/2021) on the Pharo Issue Tracker
by Marcus Denker Dec. 17, 2021

Dec. 17, 2021

We merged 15 PRs and closed 9 Issue Tracker entries this week: Modularity ========== - Extract freetype to its own baseline (2nd pass) #10641 https://github.com/pharo-project/pharo/pull/10641 - Register bootstrapped projects #10653 https://github.com/pharo-project/pharo/pull/10653 - Split baseline of threadedffi #10637 https://github.com/pharo-project/pharo/pull/10637 - Make Athens not coupled with FT2 #10646 https://github.com/pharo-project/pharo/pull/10646 Refactoring =========== - Migrating RBAbstractVariables and RBMoveMethod #10626 https://github.com/pharo-project/pharo/pull/10626 Fixes ===== - Fix metacello lock #10633 https://github.com/pharo-project/pharo/pulse - 10294-undefinedIdentifier-is-missing-in-SHRBTextStyler #10648 https://github.com/pharo-project/pharo/pull/10648 - fix a couple of regressions #10662 https://github.com/pharo-project/pharo/pull/10662 - 10651-Resuming-a-exception-that-has-been-signalled-twice-does-not-return-correctly #10652 https://github.com/pharo-project/pharo/pull/10652 Cleanup ======= - Cleanup-DuplcatedMethods-12-13 #10654 https://github.com/pharo-project/pharo/pull/10654 - Cleanup-Spec-Deprecated #10624 https://github.com/pharo-project/pharo/pull/10624 - Unused method in FFI #10660 https://github.com/pharo-project/pharo/pull/10660 - Cleanup: STONWriter categorization #10661 https://github.com/pharo-project/pharo/pull/10661 - Categorize-More-Uncategorized #10649 https://github.com/pharo-project/pharo/pull/10649 - Fixing selector type: RBAddMethodChange>>#class:source:contoller: #10643 https://github.com/pharo-project/pharo/pull/10643

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one year contract
by stephane ducasse Dec. 14, 2021

Dec. 14, 2021

Hello this is a one year contract with remote working possibility in Pharo of course. We will produce an english version. Please contact Nicolas Becu. Nicolas Becu <nicolas.becu(a)cnrs.fr> _____________ Nicolas Becu Chercheur CNRS Littoral Environnement et SociÃ©tÃ©s (UMR LIENSs) TÃ©l : 05 16 49 67 94 S

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Zinc redirect?
by stephane ducasse Dec. 13, 2021

Dec. 13, 2021

FYI running catching my train. from https://github.com/ronsaldo/form-scene-graph/issues/5#issuecomment-990353154 This seems to be a Zinc error while following a redirect. The following snippet can be used for replicating the issue: ZnClient new accept: 'application/octet-stream'; "Required by GitHub" url: 'https://api.github.com/repos/ronsaldo/abstract-gpu/releases/assets/49144132'; followRedirects: true; downloadTo: 'agpu.tar.gz <https://api.github.com/repos/ronsaldo/abstract-gpu/releases/assets/49144132';%20followRedirects:%20true;%20downloadTo:%20'agpu.tar.gz>'

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