November 2018 - Pharo-users

Re: [Pharo-users] VPS difficulties

by Fred Kaiser Borg

Those errors are not related to a 32 or 64 bits problem. The issue looks like you've launched pharo-ui which looks for a physical screen that isn't there. Are you trying to run pharo-ui in a debian VPS ? You should run 'pharo' and 'pharo-ui', something like this: $ pharo myApplication.image Search on google for 'pharo headless', you should find plenty of example. HTH, Fred On 22/11/2018 13:31, horrido wrote: > I ran 32-bit Pharo under 64-bit Debian and got this error: > > [1] 8127 > richard@debian:~/pharo32$ could not find display driver vm-display-X11; > either: > - check that > /home/richard/pharo32/pharo-vm/lib/pharo/5.0-201806281256//vm-display-X11.so > exists, or > - use the '-plugins <path>' option to tell me where it is, or > - remove DISPLAY from your environment. > ./pharo-ui: line 11: 8131 Aborted "$DIR"/"pharo-vm/pharo" > "$@" > > ---------- > > I thought you could always run 32-bit software in a 64-bit OS, but I guess > I'm wrong. > > > > Sean P. DeNigris wrote >> horrido wrote >>> it threw up a bunch of errors. >> Can you be more specific and did you try Mariano's suggestion about 32-bit >> libs? >> >> >> >> ----- >> Cheers, >> Sean >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >

Nov. 22, 2018

Re: [Pharo-users] VPS difficulties

by Ben Coman

On Thu, 22 Nov 2018 at 20:27, horrido <horrido.hobbies(a)gmail.com> wrote: > I tried recompiling the SHA256 library without the '-m32' flag and 64-bit > Would the in-Image SHA256 be sufficient to start with? Perhaps allow you to move forward while sorting out the main problem. Another option could be libsodium https://libsodium.gitbook.io/doc/password_hashing https://libsodium.gitbook.io/doc/advanced/sha-2_hash_function I used a different libsodium function here... https://github.com/Traadh/bittrex/blob/master/src/Bittrex.package/BittrexLi… Installation should simply be... sudo apt-get install libsodium18 --------------------- Pharo seg faulted: > The following might not be related. Its fairly common to see if limits.d/pharo.conf hasn't been set. > pthread_setschedparam failed: Operation not permitted > This VM uses a separate heartbeat thread to update its internal clock > and handle events. For best operation, this thread should run at a > higher priority, however the VM was unable to change the priority. The > effect is that heavily loaded systems may experience some latency > issues. If this occurs, please create the appropriate configuration > file in /etc/security/limits.d/ as shown below: > > cat <<END | sudo tee /etc/security/limits.d/pharo.conf > * hard rtprio 2 > * soft rtprio 2 > END > > and report to the pharo mailing list whether this improves behaviour. > cheers -ben

Nov. 22, 2018

Re: [Pharo-users] My Keynote at the Salta Conference

by horrido

David Buck provided a revision on his proposal: I agree with tossing the VM hack - it's not worth it. An objective score is best and I would prefer not to score based on number of classes, number of methods or method size. The score should be simply the highest total of captured cells in the game within a certain time period (eg. 60 seconds). Here's how I imagine this would work: The game is run in several rounds. In each round, we throw in a new aspect to the game (kill cells, teleports, etc). For each round, we provide some sample boards for the students to test their algorithms on their own computers. At the end of the round, the students submit their code to us. We then take each submission run it on our computer with a new board that the students haven't seen. As we run the game, we capture the moves and the score after each move. We can then take the top 20 (or so) submissions and create a video. I would like to see the video look like an Olympic event - every 10 seconds, show the current time versus the best score at that time. It would also be nice to have a running audio commentary for the video. We could then stream the video real-time for the teams to watch and we can make the video available after the stream is finished for teams who may have missed the live stream or wish to watch it again. All of the rounds up to the final round are just "practice rounds" for bragging rights. The final round is what determines which team wins the scholarship prizes. If we do it well, we should be able to get media attention such as local or national news. ---------- Sounds good to me! No hacking the VM. It looks like it shouldn't be too difficult to implement. horrido wrote > Thank you for your well-considered responses. I appreciate them. > > As I said in the original post, I am open to an alternative approach to > the > competition. The current approach may be problematic, I don't know. > > I still want a five-round four-person team event. I want to stretch this > out > for maximum effect. I want to structure it like a sporting event in order > to > raise excitement. > > There are several key points: > > 1) It has to sufficiently challenging to the contestants so that they > really > learn to use Pharo effectively. This should also help to mitigate > cheating. > After all, where are they going to find a sharp Smalltalker to aid in > deception? ;-) > > 2) It has to be easy to "judge" each round. This should be automatable. > After all, if there are 500 teams, we don't want to spend countless hours > judging the team submissions manually. It would be daunting. > > At this point, I welcome any new ideas for the competition. > > > > Pharo Smalltalk Users mailing list wrote >> OK, sorry. I missed that. >> >> Now I've read it. And it requires a customized VM that can count >> bytecodes >> executed against a budget and terminate execution if the budget is >> exceeded. >> >> For the developer it requires an awareness of the relationship between >> bytecodes and source code. I, personally, have virtually no idea what >> that relationship is. I used Smalltalk as a high level language and try >> not to worry about how expensive things are until it actually matters. I >> think that is most developers. >> >> So I'm not really a fan of this contest approach. The implementation is >> certainly beyond my skills. I have been dabbling with Squeak since its >> release and only recently trying to get into Pharo "in anger" because I >> have a couple projects I personally want to realize. I'm finding the >> entire thing to be really fast moving and hard to get my head around and >> the VM is pretty much still impenetrable to me after a couple months >> trying to build one. >> >> So I'm definitely not your guy and the number of people who are on top of >> the VM enough to pull this off is likely on the order of ten. >> >> Maybe a different kind of coding contest? I'd try adapting problems from >> some existing competition questions. >> >>> On Nov 20, 2018, at 6:32 PM, horrido < > >> horrido.hobbies@ > >> > wrote: >>> >>> Basically, implementing what was outlined in David Buck's document >>> (attached >>> to the original post). It may involve hacking the VM to count byte >>> codes. >>> >>> SmalltalkContestIdeas.docx >>> <http://forum.world.st/file/t128560/SmalltalkContestIdeas.docx >>> <http://forum.world.st/file/t128560/SmalltalkContestIdeas.docx>> >>> >>> >>> Pharo Smalltalk Users mailing list wrote >>>> OK, I'll bite. >>>> >>>> What does "code the competition" mean exactly? >>>> >>>> I last used Smalltalk "in anger" pre-pharo with squeak. I live ST and >>>> am >>>> looking for a way back "in" but >>>> TBH the changes from Squeak are vast and I have too many ideas to work >>>> on >>>> and keep hitting walls. >>>> >>>> I'm intrigued but need more direction. Whatcha need - ELI5. >>>> >>>> >>>> >>>>> On Nov 20, 2018, at 5:13 PM, horrido < >>> >>>> horrido.hobbies@ >>> >>>> > wrote: >>>>> >>>>> No, the money isn't lost. I was merely suggesting that without some >>>>> help, >>>>> the >>>>> marketing opportunity for this competition would be lost. >>>>> >>>>> I'm not sure you understand how much work is involved in this project. >>>>> I >>>>> will be doing a great deal of the heavy lifting. I have to setup the >>>>> competition website server. I have to advertise or reach out to high >>>>> schools >>>>> across the country. I have to get local media interested in covering >>>>> the >>>>> competition. I have to look into producing the T-shirt swag, and >>>>> shipping >>>>> the T-shirts to all contest participants, and at an affordable rate to >>>>> fit >>>>> the budget. Those are only a few things off the top of my head. >>>>> >>>>> Coding the actual contest problems according to David Buck's >>>>> prescription >>>>> shouldn't be open-ended and shouldn't be a huge commitment. I imagine >>>>> it >>>>> would be a couple of months of work during spare time. >>>>> >>>>> >>>>> >>>>> jgfoster wrote >>>>>> Hi Richard, >>>>>> >>>>>> So the $$$$ that we gave you is now âlost"? Perhaps people didnât >>>>>> understand what you expected from us other than money. What else is >>>>>> needed >>>>>> to make your project a success? We are supposed to âcode the >>>>>> competitionâ >>>>>> as well? Anything else? >>>>>> >>>>>> Is this practice of insulting people (âDoesnât anyone care about >>>>>> promoting >>>>>> Pharo?â) supposed to be motivating? Is it a demonstration of you >>>>>> expertise >>>>>> at marketing? Does it build confidence about how the Smalltalk >>>>>> community >>>>>> will be perceived by the new arrivals? >>>>>> >>>>>> Iâve appreciated your blog posts and your passion, but Iâm put off by >>>>>> this >>>>>> approach. >>>>>> >>>>>> James >>>>>> >>>>>> P.S. I realize that Iâm probably doing what Iâm criticizing in >>>>>> youâthrowing out negative comments from behind a keyboard to score >>>>>> points >>>>>> when I might not be so harsh in person. >>>>>> >>>>>>> On Nov 20, 2018, at 2:36 PM, Richard Kenneth Eng < >>>>> >>>>>> horrido.hobbies@ >>>>> >>>>>> > wrote: >>>>>>> >>>>>>> Not even a single nibble? Doesn't anyone care about promoting Pharo? >>>>>>> >>>>>>> What a colossal lost opportunity! >>>>>>> >>>>>>> >>>>>>> On Sun, 18 Nov 2018 at 09:29, Richard Kenneth Eng < >>>>> >>>>>> horrido.hobbies@ >>>>> >>>>>> <mailto: >>>>> >>>>>> horrido.hobbies@ >>>>> >>>>>> >> wrote: >>>>>>> Some of you may already be aware of my presentation at Smalltalks >>>>>>> 2018, >>>>>>> the outcome of which was full funding for my Smalltalk programming >>>>>>> competition. See My Keynote at the Salta Conference >>>>>>> <https://hackernoon.com/my-keynote-at-the-salta-conference-435dfaccc888&gt >>>>>>> <https://hackernoon.com/my-keynote-at-the-salta-conference-435dfaccc888&gt> >>>>>>> <https://hackernoon.com/my-keynote-at-the-salta-conference-435dfaccc888&gt&gt >>>>>>> <https://hackernoon.com/my-keynote-at-the-salta-conference-435dfaccc888&amp;gt&gt>;;. >>>>>>> >>>>>>> Three years ago, David Buck provided an outline for the competition. >>>>>>> See >>>>>>> attached. >>>>>>> >>>>>>> I would like to use that as a starting point, though I am open to >>>>>>> alternative suggestions. >>>>>>> >>>>>>> The reason for this post is the following... >>>>>>> >>>>>>> I need volunteers to code the competition. I am nowhere near >>>>>>> qualified >>>>>>> to >>>>>>> do so, as my knowledge of Pharo is limited. >>>>>>> >>>>>>> Without help from Pharoers (or, at least, Smalltalkers), the >>>>>>> competition >>>>>>> is in jeopardy. This is a great opportunity to promote Pharo. (The >>>>>>> original competition three years ago was going to use VisualWorks, >>>>>>> but >>>>>>> since Cincom did not see fit to support my competition this year, I >>>>>>> decided to go with Pharo.) >>>>>>> >>>>>>> Please contact me if anyone is interested. It would be a terrible >>>>>>> shame >>>>>>> to waste this opportunity. >>>>>>> >>>>>>> Regards, >>>>>>> Richard >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >>>>> <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> >>>>> <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html&gt >>>>> <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html&gt>; >>> >>> >>> >>> >>> >>> -- >>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >>> <http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html> > > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Nov. 22, 2018

Re: [Pharo-users] VPS difficulties

by horrido

I ran 32-bit Pharo under 64-bit Debian and got this error: [1] 8127 richard@debian:~/pharo32$ could not find display driver vm-display-X11; either: - check that /home/richard/pharo32/pharo-vm/lib/pharo/5.0-201806281256//vm-display-X11.so exists, or - use the '-plugins <path>' option to tell me where it is, or - remove DISPLAY from your environment. ./pharo-ui: line 11: 8131 Aborted "$DIR"/"pharo-vm/pharo" "$@" ---------- I thought you could always run 32-bit software in a 64-bit OS, but I guess I'm wrong. Sean P. DeNigris wrote > horrido wrote >> it threw up a bunch of errors. > > Can you be more specific and did you try Mariano's suggestion about 32-bit > libs? > > > > ----- > Cheers, > Sean > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Nov. 22, 2018

Re: [Pharo-users] VPS difficulties

by horrido

I tried recompiling the SHA256 library without the '-m32' flag and 64-bit Pharo seg faulted: pthread_setschedparam failed: Operation not permitted This VM uses a separate heartbeat thread to update its internal clock and handle events. For best operation, this thread should run at a higher priority, however the VM was unable to change the priority. The effect is that heavily loaded systems may experience some latency issues. If this occurs, please create the appropriate configuration file in /etc/security/limits.d/ as shown below: cat <<END | sudo tee /etc/security/limits.d/pharo.conf * hard rtprio 2 * soft rtprio 2 END and report to the pharo mailing list whether this improves behaviour. You will need to log out and log back in for the limits to take effect. For more information please see https://github.com/OpenSmalltalk/opensmalltalk-vm/releases/tag/r3732#linux Segmentation fault Wed Nov 21 22:10:27 2018 /home/richard/pharo/pharo-vm/lib/pharo/5.0-201806281256/pharo Pharo VM version: 5.0-201806281256 Thu Jun 28 13:04:44 UTC 2018 gcc 4.8 [Production Spur 64-bit VM] Built from: CoInterpreter VMMaker.oscog-eem.2401 uuid: 29232e0e-c9e3-41d8-ae75-519db862e02c Jun 28 2018 With: StackToRegisterMappingCogit VMMaker.oscog-eem.2401 uuid: 29232e0e-c9e3-41d8-ae75-519db862e02c Jun 28 2018 Revision: VM: 201806281256 https://github.com/OpenSmalltalk/opensmalltalk-vm.git Date: Thu Jun 28 14:56:30 2018 CommitHash: a8a1dc1 Plugins: 201806281256 https://github.com/OpenSmalltalk/opensmalltalk-vm.git Build host: Linux travis-job-46342785-b1c1-4811-8c3c-9b2a88ae7ecc 4.4.0-101-generic #124~14.04.1-Ubuntu SMP Fri Nov 10 19:05:36 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux plugin path: /home/richard/pharo/pharo-vm/lib/pharo/5.0-201806281256 [default: /home/richard/pharo/pharo-vm/lib/pharo/5.0-201806281256/] C stack backtrace & registers: rax 0x17be8f40 rbx 0x17be8dd0 rcx 0x17be8ff8 rdx 0x17be8e88 rdi 0x17be8ba8 rsi 0x17be8ba8 rbp 0x17be8d18 rsp 0x17be90b0 r8 0x17be85e8 r9 0x17be86a0 r10 0x17be8758 r11 0x17be8810 r12 0x17be88c8 r13 0x17be8980 r14 0x17be8a38 r15 0x17be8af0 rip 0x17be9168 *[0x7ffc17be9168] blah, blah, blah ---------- The "pthread_setschedparam failed" error is concerning, too. <quote author="Hans-Martin"> He's got a 32 bit library that he wants to use, that won't work with a 64 bit VM. Of course, recompiling the library for 64 bit is an option, too, but probably more complicated. Cheers, Hans-Martin Am 22. November 2018 9:21:47 vorm. schrieb Sven Van Caekenberghe <sven@>: > Just use 64 bit Pharo 7 on a 64 bit Linux and be done with all this mess. > >> On 22 Nov 2018, at 01:39, horrido <horrido.hobbies@> wrote: >> >> Using zeroconf, I installed 32-bit Pharo under 64-bit Debian. Pharo >> refused >> to run â it threw up a bunch of errors. >> >> >> >> Mariano Martinez Peck wrote >>> Run Pharo 32 bits and install 32 bit libs... >>> >>> On Wed, Nov 21, 2018, 21:07 Richard Kenneth Eng < >> >>> horrido.hobbies@ >> >>> wrote: >>> >>> > I'm creating the competition website using Pharo and Teapot. For >>>> encryption, I'm using Pierce Ng's PasswordCrypt, which requires a >>>> 32-bit >>>> C >>>> library. This means I must run 32-bit Pharo. >>>> >>>> And this means I must run 32-bit Pharo under 32-bit Linux. Therein lies >>>> the rub... >>>> >>>> I would like to host the website at DigitalOcean or Linode or OVH. As >>>> far >>>> as I can tell, however, these services do not support 32-bit Linux, >>>> only >>>> 64-bit. >>>> >>>> What can I do? >>>> >> >> >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Nov. 22, 2018

Re: [Pharo-users] VPS difficulties

by Hans-Martin Mosner

He's got a 32 bit library that he wants to use, that won't work with a 64 bit VM. Of course, recompiling the library for 64 bit is an option, too, but probably more complicated. Cheers, Hans-Martin Am 22. November 2018 9:21:47 vorm. schrieb Sven Van Caekenberghe <sven(a)stfx.eu>: > Just use 64 bit Pharo 7 on a 64 bit Linux and be done with all this mess. > >> On 22 Nov 2018, at 01:39, horrido <horrido.hobbies(a)gmail.com> wrote: >> >> Using zeroconf, I installed 32-bit Pharo under 64-bit Debian. Pharo refused >> to run â it threw up a bunch of errors. >> >> >> >> Mariano Martinez Peck wrote >>> Run Pharo 32 bits and install 32 bit libs... >>> >>> On Wed, Nov 21, 2018, 21:07 Richard Kenneth Eng < >> >>> horrido.hobbies@ >> >>> wrote: >>> >>> > I'm creating the competition website using Pharo and Teapot. For >>>> encryption, I'm using Pierce Ng's PasswordCrypt, which requires a 32-bit >>>> C >>>> library. This means I must run 32-bit Pharo. >>>> >>>> And this means I must run 32-bit Pharo under 32-bit Linux. Therein lies >>>> the rub... >>>> >>>> I would like to host the website at DigitalOcean or Linode or OVH. As far >>>> as I can tell, however, these services do not support 32-bit Linux, only >>>> 64-bit. >>>> >>>> What can I do? >>>> >> >> >> >> >> >> -- >> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Nov. 22, 2018

Re: [Pharo-users] VPS difficulties

by Tim Mackinnon

I think Sven is probably right - but my notes show a DO installation from 5 months ago with: curl https://get.pharo.org | bash wget -O - http://download.opensuse.org/repositories/devel:/languages:/pharo:/stable/x… | apt-key add - echo "deb http://download.opensuse.org/repositories/devel:/languages:/pharo:/stable/x… ./" > /etc/apt/sources.list.d/pharo.list apt install pharo6-32-ui pharo6-64-ui mkdir -p /opt/pharo &&\ cd /opt/pharo &&\ curl https://get.pharo.org/61+vm | bash &&\ ln -s \ `/sbin/ldconfig -p | grep -v x86-64 | sed -e 's|[^/]*||' | grep sqlite3` \ `find . -type f -name SqueakSSL.so -print0 | xargs -0 dirname`/sqlite3.so cd /usr/local/bin && ln -s /opt/pharo/pharo && ln -s /opt/pharo/pharo-ui pharo /opt/pharo/Pharo.image eval "'Pharo {1}bit installed\' format: {32}" ./pharo Pharo.image printVersion Sent from my iPhone > On 22 Nov 2018, at 07:39, horrido <horrido.hobbies(a)gmail.com> wrote: > > Using zeroconf, I installed 32-bit Pharo under 64-bit Debian. Pharo refused > to run â it threw up a bunch of errors. > > > > Mariano Martinez Peck wrote >> Run Pharo 32 bits and install 32 bit libs... >> >> On Wed, Nov 21, 2018, 21:07 Richard Kenneth Eng < > >> horrido.hobbies@ > >> wrote: >> >> > I'm creating the competition website using Pharo and Teapot. For >>> encryption, I'm using Pierce Ng's PasswordCrypt, which requires a 32-bit >>> C >>> library. This means I must run 32-bit Pharo. >>> >>> And this means I must run 32-bit Pharo under 32-bit Linux. Therein lies >>> the rub... >>> >>> I would like to host the website at DigitalOcean or Linode or OVH. As far >>> as I can tell, however, these services do not support 32-bit Linux, only >>> 64-bit. >>> >>> What can I do? >>> > > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html >

Nov. 22, 2018

Re: [Pharo-users] VPS difficulties

by Sven Van Caekenberghe

Just use 64 bit Pharo 7 on a 64 bit Linux and be done with all this mess. > On 22 Nov 2018, at 01:39, horrido <horrido.hobbies(a)gmail.com> wrote: > > Using zeroconf, I installed 32-bit Pharo under 64-bit Debian. Pharo refused > to run â it threw up a bunch of errors. > > > > Mariano Martinez Peck wrote >> Run Pharo 32 bits and install 32 bit libs... >> >> On Wed, Nov 21, 2018, 21:07 Richard Kenneth Eng < > >> horrido.hobbies@ > >> wrote: >> >> > I'm creating the competition website using Pharo and Teapot. For >>> encryption, I'm using Pierce Ng's PasswordCrypt, which requires a 32-bit >>> C >>> library. This means I must run 32-bit Pharo. >>> >>> And this means I must run 32-bit Pharo under 32-bit Linux. Therein lies >>> the rub... >>> >>> I would like to host the website at DigitalOcean or Linode or OVH. As far >>> as I can tell, however, these services do not support 32-bit Linux, only >>> 64-bit. >>> >>> What can I do? >>> > > > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Nov. 22, 2018

Re: [Pharo-users] VPS difficulties

by Sean P. DeNigris

horrido wrote > it threw up a bunch of errors. Can you be more specific and did you try Mariano's suggestion about 32-bit libs? ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Nov. 22, 2018

Re: [Pharo-users] VPS difficulties

by horrido

Using zeroconf, I installed 32-bit Pharo under 64-bit Debian. Pharo refused to run â it threw up a bunch of errors. Mariano Martinez Peck wrote > Run Pharo 32 bits and install 32 bit libs... > > On Wed, Nov 21, 2018, 21:07 Richard Kenneth Eng < > horrido.hobbies@ > wrote: > > > I'm creating the competition website using Pharo and Teapot. For >> encryption, I'm using Pierce Ng's PasswordCrypt, which requires a 32-bit >> C >> library. This means I must run 32-bit Pharo. >> >> And this means I must run 32-bit Pharo under 32-bit Linux. Therein lies >> the rub... >> >> I would like to host the website at DigitalOcean or Linode or OVH. As far >> as I can tell, however, these services do not support 32-bit Linux, only >> 64-bit. >> >> What can I do? >> -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html

Nov. 22, 2018