July 2017 - Pharo-users - lists.pharo.org

Re: [Pharo-users] could not find module vm-display-X11

by Hilaire

Hi, It does not work on a new installed system. It is related to the installed system, other report it to me with the same system Le 19/07/2017 Ã 00:01, Alistair Grant a Ã©crit : > Is this something that was working and has suddenly stopped, or a new > install that doesn't work? > > Assuming that it is installed correctly, can you provide the output of: > > cd /to/where/the/pharo/exe/is > ldd pharo ldd pharo linux-gate.so.1 => (0xf7777000) libm.so.6 => /lib/i386-linux-gnu/libm.so.6 (0xf7705000) libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xf7700000) libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xf76e2000) libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xf752c000) /lib/ld-linux.so.2 (0x5655a000) > ldd vm-display-X11 ldd vm-display-X11 linux-gate.so.1 => (0xf773a000) libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xf76e4000) libGL.so.1 => not found libX11.so.6 => /usr/lib/i386-linux-gnu/libX11.so.6 (0xf7598000) libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xf73e2000) /lib/ld-linux.so.2 (0x56649000) libxcb.so.1 => /usr/lib/i386-linux-gnu/libxcb.so.1 (0xf73bc000) libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xf73b7000) libXau.so.6 => /usr/lib/i386-linux-gnu/libXau.so.6 (0xf73b3000) libXdmcp.so.6 => /usr/lib/i386-linux-gnu/libXdmcp.so.6 (0xf73ab000) > > > Cheers, > Alistair -- Dr. Geo http://drgeo.eu

July 19, 2017

Re: [Pharo-users] Performance Testing Tools

by Luke Gorrie

Hi Evan, I am also really interesting in this topic and have been doing a bunch of work on automating statistical benchmarks. I don't have a background in statistics or formal QA but I am learning as I go along :). The tools I'm building are outside Smalltalk. Our full performance test suite takes about a week of machine time to run because tests ~15,000 QEMU VMs with different software versions / configurations / workloads. There is a CI server that runs all those tests, getting pretty fast turnarounds by distributing across a cluster of servers and reusing results from unmodified software branches, and spits out a CSV with one row per test result (giving the benchmark score and the parameters of the test.) Then what to do with that ~15,000 line CSV file? Just now I run Rmarkdown to make a report on the distribution of results and then manually inspect that to check for interesting differences. I lump all of the different configurations in together and treat them as one population at the moment. Here is an example report: https://hydra.snabb.co/build/1604171/download/2/report.html It's a bit primitive but it is getting the job done for release engineering. I'm reasonably confident that new software releases don't break or slow down in obscure configurations. We are building network equipment and performance regressions are generally not acceptable. I'm looking into more clever ways to automatically interpret the results, e.g. fumbling around at https://stats.stackexchange.com/questions/288416/non-parametric-test-if-two… . Could relate to your ambitions somehow? On 19 July 2017 at 02:00, Evan Donahue <emdonahu(a)gmail.com> wrote: > Hi, > > I've been doing a lot of performance testing lately, and I've found myself > wanting to upgrade my methods from ad hoc use of bench and message tally. > Is there any kind of framework for like, statistically comparing > improvements in performance benchmarks across different versions of code, > or anything that generally helps manage the test-tweak-test loop? Just > curious what's out there before I go writing something. Too many useful > little libraries to keep track of! > > Evan >

July 19, 2017

Need help for SmartTest/CORA

by Benoit Verhaeghe

Hi everyone, I'm working on SmartTest/CORA. It's a plugin that help us with test. It shows us only the test we should run to well tests ours applications. And it will run automatically the tests (or not if you disable this option). It will be great if you can help me by installing it. You only have to execute this command : Metacello new githubUser: 'badetitou' project: 'TestsUsageAnalyser-CORAExtends' commitish: 'master' path: '.' ; baseline: 'TestsUsageAnalyserCORAExtends' ; load . You can also use the plugin with jenkins. Everything are explained here : http://badetitou.github.io/research/smalltalk/2017/07/05/CORA/ Tell me if you are in trouble during the installation Thanks for your help Benoit

July 19, 2017

Performance Testing Tools

by Evan Donahue

Hi, I've been doing a lot of performance testing lately, and I've found myself wanting to upgrade my methods from ad hoc use of bench and message tally. Is there any kind of framework for like, statistically comparing improvements in performance benchmarks across different versions of code, or anything that generally helps manage the test-tweak-test loop? Just curious what's out there before I go writing something. Too many useful little libraries to keep track of! Evan

July 19, 2017

Re: [Pharo-users] could not find module vm-display-X11

by Alistair Grant

Hi Hilaire, On 18 July 2017 at 22:27, Hilaire <hilaire(a)drgeo.eu> wrote: > Hi, > > On Ubuntu 16.04 (Ubuntu MAte), I ahve the following error with DR. Geo > (release based on Pharo3). Of course the needed 32bits libs are installed. > Could it be the new graphic back end of Ubuntu? > > > hilaire@PCHome:~/DrGeo.app$ ./DrGeo.sh could not find module vm-display-X11 > Abandon (core dumped) Is this something that was working and has suddenly stopped, or a new install that doesn't work? Assuming that it is installed correctly, can you provide the output of: cd /to/where/the/pharo/exe/is ldd pharo ldd vm-display-X11 Cheers, Alistair

July 18, 2017

Re: [Pharo-users] bitAnd: Documentation

by Stephane Ducasse

I opened a bug entry. https://pharo.fogbugz.com/f/cases/20257/bitAnd-description-is-wrong On Tue, Jul 18, 2017 at 11:16 PM, Stephane Ducasse <stepharo.self(a)gmail.com> wrote: > Thanks Koos. This description is indeed wrong. > > > On Tue, Jul 18, 2017 at 8:47 PM, Koos Brandt <brandt.koos(a)gmail.com> wrote: >> Hi >> >> I am new to this environment >> >> I am on Pharo 6.0 - 64 Mac OSX version, Downloaded over the weekend. >> >> Just did some learning and found that the description for bitAnd: is >> probably wrong. >> >> It reads exactly the same as bitOr: >> >> here are some tests as performed in the workspace >> Also included bitXor: for the fun of it >> >> bitAnd: arg >> Primitive. Answer an Integer whose bits are the logical OR of the >> receiver's bits and those of the argument, arg. >> Numbers are interpreted as having 2's-complement representation. >> Essential. See Object documentation whatIsAPrimitive. >> <primitive: 14> >> self >= 0 ifTrue: [^ arg bitAnd: self]. >> ^ (self bitInvert bitOr: arg bitInvert) bitInvert. >> 0 bitAnd: 0 -> 0 >> 1 bitAnd: 0 -> 0 >> 2 bitAnd: 0 -> 0 >> 3 bitAnd: 0 -> 0 >> 0 bitAnd: 1 -> 0 >> 1 bitAnd: 1 -> 1 >> 2 bitAnd: 1 -> 0 >> 3 bitAnd: 1 -> 1 >> >> bitOr: arg >> Primitive. Answer an Integer whose bits are the logical OR of the >> receiver's bits and those of the argument, arg. >> Numbers are interpreted as having 2's-complement representation. >> Essential. See Object documentation whatIsAPrimitive. >> <primitive: 15> >> self >= 0 ifTrue: [^ arg bitOr: self]. >> ^ arg < 0 >> ifTrue: [(self bitInvert bitAnd: arg bitInvert) bitInvert] >> ifFalse: [(self bitInvert bitClear: arg) bitInvert] >> 0 bitOr: 0 -> 0 >> 1 bitOr: 0 -> 1 >> 2 bitOr: 0 -> 2 >> 3 bitOr: 0 -> 3 >> 0 bitOr: 1 -> 1 >> 1 bitOr: 1 -> 1 >> 2 bitOr: 1 -> 3 >> 3 bitOr: 1 -> 3 >> >> bitXor: arg >> Primitive. Answer an Integer whose bits are the logical XOR of the >> receiver's bits and those of the argument, arg. >> Numbers are interpreted as having 2's-complement representation. >> Essential. See Object documentation whatIsAPrimitive. >> <primitive: 16> >> self >= 0 ifTrue: [^ arg bitXor: self]. >> ^ arg < 0 >> ifTrue: [self bitInvert bitXor: arg bitInvert] >> ifFalse: [(self bitInvert bitXor: arg) bitInvert]. >> 0 bitXor: 0 -> 0 >> 1 bitXor: 0 -> 1 >> 2 bitXor: 0 -> 2 >> 3 bitXor: 0 -> 3 >> 0 bitXor: 1 -> 1 >> 1 bitXor: 1 -> 0 >> 2 bitXor: 1 -> 3 >> 3 bitXor: 1 -> 2 >> >> Picked it up when I was trying to explain the simplicity of the even method >> on smallInteger. >> >> Methods work just fine, but the description is wrong >> >> regards >> Koos brandt >>

July 18, 2017

Re: [Pharo-users] bitAnd: Documentation

by Stephane Ducasse

Thanks Koos. This description is indeed wrong. On Tue, Jul 18, 2017 at 8:47 PM, Koos Brandt <brandt.koos(a)gmail.com> wrote: > Hi > > I am new to this environment > > I am on Pharo 6.0 - 64 Mac OSX version, Downloaded over the weekend. > > Just did some learning and found that the description for bitAnd: is > probably wrong. > > It reads exactly the same as bitOr: > > here are some tests as performed in the workspace > Also included bitXor: for the fun of it > > bitAnd: arg > Primitive. Answer an Integer whose bits are the logical OR of the > receiver's bits and those of the argument, arg. > Numbers are interpreted as having 2's-complement representation. > Essential. See Object documentation whatIsAPrimitive. > <primitive: 14> > self >= 0 ifTrue: [^ arg bitAnd: self]. > ^ (self bitInvert bitOr: arg bitInvert) bitInvert. > 0 bitAnd: 0 -> 0 > 1 bitAnd: 0 -> 0 > 2 bitAnd: 0 -> 0 > 3 bitAnd: 0 -> 0 > 0 bitAnd: 1 -> 0 > 1 bitAnd: 1 -> 1 > 2 bitAnd: 1 -> 0 > 3 bitAnd: 1 -> 1 > > bitOr: arg > Primitive. Answer an Integer whose bits are the logical OR of the > receiver's bits and those of the argument, arg. > Numbers are interpreted as having 2's-complement representation. > Essential. See Object documentation whatIsAPrimitive. > <primitive: 15> > self >= 0 ifTrue: [^ arg bitOr: self]. > ^ arg < 0 > ifTrue: [(self bitInvert bitAnd: arg bitInvert) bitInvert] > ifFalse: [(self bitInvert bitClear: arg) bitInvert] > 0 bitOr: 0 -> 0 > 1 bitOr: 0 -> 1 > 2 bitOr: 0 -> 2 > 3 bitOr: 0 -> 3 > 0 bitOr: 1 -> 1 > 1 bitOr: 1 -> 1 > 2 bitOr: 1 -> 3 > 3 bitOr: 1 -> 3 > > bitXor: arg > Primitive. Answer an Integer whose bits are the logical XOR of the > receiver's bits and those of the argument, arg. > Numbers are interpreted as having 2's-complement representation. > Essential. See Object documentation whatIsAPrimitive. > <primitive: 16> > self >= 0 ifTrue: [^ arg bitXor: self]. > ^ arg < 0 > ifTrue: [self bitInvert bitXor: arg bitInvert] > ifFalse: [(self bitInvert bitXor: arg) bitInvert]. > 0 bitXor: 0 -> 0 > 1 bitXor: 0 -> 1 > 2 bitXor: 0 -> 2 > 3 bitXor: 0 -> 3 > 0 bitXor: 1 -> 1 > 1 bitXor: 1 -> 0 > 2 bitXor: 1 -> 3 > 3 bitXor: 1 -> 2 > > Picked it up when I was trying to explain the simplicity of the even method > on smallInteger. > > Methods work just fine, but the description is wrong > > regards > Koos brandt >

July 18, 2017

could not find module vm-display-X11

by Hilaire

Hi, On Ubuntu 16.04 (Ubuntu MAte), I ahve the following error with DR. Geo (release based on Pharo3). Of course the needed 32bits libs are installed. Could it be the new graphic back end of Ubuntu? hilaire@PCHome:~/DrGeo.app$ ./DrGeo.sh could not find module vm-display-X11 Abandon (core dumped) Hilaire

July 18, 2017

Re: [Pharo-users] Mysterious problem in loading Pharo

by Herby VojÄÃk

Herby VojÄÃk wrote: > It is a real problem (I was getting it in 100% of the cases, restart > did not help, restore of system disk image from last (this monday, so s/from last/from last backup/ > including the recent update) helped. > > What I wanted to point to, is, at stack overflow they mentioned this > error happens when dlls depend on each other, are loaded via > LoadLibrary and access their memory before they are actually loaded > (something like that). > > Maybe it would be beneficial to look at how dlls (especially in > combination with FT2Plugin.dll) are loaded, and somehow force some > order there. > > Herby

July 18, 2017

Re: [Pharo-users] [Pharo-dev] [Ann] Keccak hashing algorithm

by Santiago Bragagnolo

Hahahaha, Thanks for the feedback. Sven, I am quite new in this domain. I'll study your questions and come with solutions tomorrow :). Thanks, i really need this interaction. On Tue, 18 Jul 2017 at 20:28 Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > Great work. I love libraries like these. > > I am a bit confused though, in your #updateString: you seem to be > implementing UTF-8 encoding, something we already have. Normally, hashing > algorithms are defined on bytes and result in bytes (yours returns a plain > Array, which is also strange). > > It seems > > (Keccak hashMessage: 'foo bar') = (Keccak hashMessage: 'foo bar' > asByteArray). > > is true, but > > (Keccak hashMessage: 'Les Ã©lÃ¨ves FranÃ§aises') = (Keccak hashMessage: 'Les > Ã©lÃ¨ves FranÃ§aises' utf8Encoded). > > is false. How come ? > > Is this UTF-8 encoding really part of the algorithm ? > > Do your tests cover it ? > > Another question, how would you compute the invariants given here ? > > https://en.wikipedia.org/wiki/SHA-3#Examples_of_SHA-3_variants > > SHAKE128("The quick brown fox jumps over the lazy dog", 256) > > f4202e3c5852f9182a0430fd8144f0a74b95e7417ecae17db0f8cfeed0e3e66e > > SHAKE128("The quick brown fox jumps over the lazy dof", 256) > > 853f4538be0db9621a6cea659a06c1107b1f83f02b13d18297bd39d7411cf10c > > > On 18 Jul 2017, at 18:32, Santiago Bragagnolo < > santiagobragagnolo(a)gmail.com> wrote: > > > > Hi there! > > > > I am just releasing the first version of the Keccak-256 hashing > algorithm. https://en.wikipedia.org/wiki/SHA-3 > > > > You can find it at: https://github.com/sbragagnolo/Keccak > > > > This version is based on a javascript implementation: > https://github.com/emn178/js-sha3 > > > > This implementation supports as message: bytearray and ascii and utf-8 > strings. > > > > > > Soon i will be adding support to the rest of the Keccak family of > hashing functions, since the implementations is quite configurable, is just > need to add some constructors with specific configurations and tests for > this other cases of usage. > > > > > > Here a onliner for building an image with the version v0.1: > > > > wget -O- > https://raw.githubusercontent.com/sbragagnolo/Keccak/v0.1/build.sh | bash > > > > Hope you find it useful :) > > > > > > Santiago > > > > > > >

July 18, 2017