DOMjudge-devel

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194 discussions

Re: Kotlin Problem
by Jaap Eldering 14 Jan '18

14 Jan '18

Hi Andrew, [Also including the list again, I made the mistake of dropping it in my first reply.] On 13/01/18 17:30, Andrew Jauhari wrote: > Thanks for the quick reply again, Sir. > > I was supiscious about kotlin is not installed in chroot enviroment too but i have no idea how to install them at chroot enviroment. > > Before you reply, I have managed to make kotlin work by compiling using kotlinc to make java executable (jar), and finally running the program using java and -jar parameter on addition other java parameter. But I worry that it will create future unknown problem. > > Anyway , I need more guidance to install kotlin at chroot mode. Do installing from https://www.domjudge.org/icpc-kotlinc_1.1.4-3~icpc_all.deb, will install kotlin to the chroot environment? Do I need any more steps to make it available to chroot enviroment? Just installing the package above is not enough. What you need to do is to install the package _inside_ the chroot. The steps you need to take are (roughly, it may vary slightly depending on your environment): - copy icpc-kotlinc_1.1.4-3~icpc_all.deb somewhere into your chroot - enter the chroot: sudo chroot /chroot/domjudge (or whatever path you build it at) - install the package there: dpkg -i /path/to/icpc-kotlinc_1.1.4-3~icpc_all.deb - if dpkg complains about missing dependencies, run 'apt-get -f install' or install them and then try again - exit the chroot and test if it works You might need to bind mount /proc, /dev, and/or /dev/pts inside the chroot to make apt-get work. See the domjudge chroot-start-stop.sh file for examples how to do so. Best, Jaap > Thanks before for your guidance. > > Regards > Andrew Jauhari > > > > > Sent from my ASUS > > -------- Original Message -------- > From:Jaap Eldering > Sent:Sat, 13 Jan 2018 20:24:05 +0700 > To:Andrew Jauhari > Subject:Re: Kotlin Problem > > Hi Andrew, > > On 13/01/18 11:17, Andrew Jauhari wrote: >> Dear Domjudge - Developers, >> >> Hello again, I have problem to integrate Kotlin compiler in judgehost. For information, I'm using ubuntu 16.04 and I was installing kotlin from sdkman. But when compiling, it seems that domjudge cannot find kotlinc and kotlin. I have try to move kotlinc and kotlin to /bin/ directory. It seems to solve kotlinc problem, but domjudge still cannot execute kotlin. >> >> >> >> When I try to go to directory where /testcase001/execdir/program resides, and then execute it myself. It seems work and no problem. >> Trying to re-chroot seems doesn't fix this too. > > Did you also install kotlin inside the chroot? Compilation is done outside the chroot, so you need kotlinc available there, but the program is executed inside, so you need kotlin and the Kotlin support libraries inside there. > > If you want you can download https://www.domjudge.org/icpc-kotlinc_1.1.4-3~icpc_all.deb and install that. It's the Kotlin package used for the 2018 world finals environment, and we've also used it during NWERC 2017. > > Best, > Jaap > > >> Looking forward for your replay. Thanks before >> >> >> Regards, >> Andrew Jauhari >> >> >> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ >> Avast logo >> >> This email has been checked for viruses by Avast antivirus software. >> www.avast.com >> >> >> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> >> >> _______________________________________________ >> DOMjudge-devel mailing list >> DOMjudge-devel(a)domjudge.org >> https://www.domjudge.org/mailman/listinfo/domjudge-devel >> >

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[Fwd: Re: Kotlin Problem]
by Andrew Sagita Jauhari 13 Jan '18

13 Jan '18

Thanks for the quick reply again, Sir. I was supiscious about kotlin is not installed in chroot enviroment too but i have no idea how to install them at chroot enviroment. Before you reply, I have managed to make kotlin work by compiling using kotlinc to make java executable (jar), and finally running the program using java and -jar parameter on addition other java parameter. But I worry that it will create future unknown problem. Anyway , I need more guidance to install kotlin at chroot mode. Do installing from https://www.domjudge.org/icpc-kotlinc_1.1.4-3~icpc_all.deb, will install kotlin to the chroot environment? Do I need any more steps to make it available to chroot enviroment? Thanks before for your guidance. Regards Andrew Jauhari Sent from my ASUS -------- Original Message -------- From:Jaap Eldering <jaap(a)jaapeldering.nl> Sent:Sat, 13 Jan 2018 20:24:05 +0700 To:Andrew Jauhari <andrew(a)mikroskil.ac.id> Subject:Re: Kotlin Problem Hi Andrew, On 13/01/18 11:17, Andrew Jauhari wrote: > Dear Domjudge - Developers, > > Hello again, I have problem to integrate Kotlin compiler in judgehost. For information, I'm using ubuntu 16.04 and I was installing kotlin from sdkman. But when compiling, it seems that domjudge cannot find kotlinc and kotlin. I have try to move kotlinc and kotlin to /bin/ directory. It seems to solve kotlinc problem, but domjudge still cannot execute kotlin. > > > > When I try to go to directory where /testcase001/execdir/program resides, and then execute it myself. It seems work and no problem. > Trying to re-chroot seems doesn't fix this too. Did you also install kotlin inside the chroot? Compilation is done outside the chroot, so you need kotlinc available there, but the program is executed inside, so you need kotlin and the Kotlin support libraries inside there. If you want you can download https://www.domjudge.org/icpc-kotlinc_1.1.4-3~icpc_all.deb and install that. It's the Kotlin package used for the 2018 world finals environment, and we've also used it during NWERC 2017. Best, Jaap > Looking forward for your replay. Thanks before > > > Regards, > Andrew Jauhari > > > ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ > Avast logo <https://www.avast.com/antivirus> > > This email has been checked for viruses by Avast antivirus software. > www.avast.com <https://www.avast.com/antivirus> > > > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > > _______________________________________________ > DOMjudge-devel mailing list > DOMjudge-devel(a)domjudge.org > https://www.domjudge.org/mailman/listinfo/domjudge-devel >

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Kotlin Problem
by Andrew Jauhari 13 Jan '18

13 Jan '18

Dear Domjudge - Developers, Hello again, I have problem to integrate Kotlin compiler in judgehost. For information, I'm using ubuntu 16.04 and I was installing kotlin from sdkman. But when compiling, it seems that domjudge cannot find kotlinc and kotlin. I have try to move kotlinc and kotlin to /bin/ directory. It seems to solve kotlinc problem, but domjudge still cannot execute kotlin. When I try to go to directory where /testcase001/execdir/program resides, and then execute it myself. It seems work and no problem. Trying to re-chroot seems doesn't fix this too. Looking forward for your replay. Thanks before Regards, Andrew Jauhari --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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About Domjudge version 6.0.0 stable version Plan
by Andrew Jauhari 05 Jan '18

05 Jan '18

Dear Domjudge Developers, I'm Andrew Jauhari from Mikroskil, an education institution in Medan, Indonesia. We are going to hold event that will use latest version of domjudge, and version 6.0.0 is prefered, but currently it is not the stable one. From what I see, the current stable version is 5.3.2 and was just released at 29 Dec 2017. I want to ask if domjudge v 6.0.0 stable will be released soon or not ? Can you give information about this, so I can proceed whether I need to use current stable version or wait for stable version of Domjudge 6.0.0 I'm looking forward for your reply. Thanks before. Regards, Andrew Jauhari --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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How to submit via api?
by Nguyễn Văn Quân 23 Dec '17

23 Dec '17

Hi, Thank for your help about install domjudge. Now it work ok and I want to submit problem via api. /domjudge/api/submissions <http://dj5.cachhoc.net/domjudge/api/submissions> (POST) I read the document api but I can not know how to use it. I want use php to post submission, and now I test on postman but don't know what are fields to post data. -- _________________________ Name: Nguyen Van Quan Come from: OTVINA company Email: nguyenvanquan7826(a)gmail.com Blog: nguyenvanquan7826.com Phone: +84.96.567.7826

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ERROR a2enconf
by Nguyễn Văn Quân 20 Dec '17

20 Dec '17

Hi, After config ln -s ln -s /root/domserver/etc/apache.conf /etc/apache2/conf-available/domjudge.conf Then I type command sudo a2enconf domjudge And I get answer *ERROR : Conf domjudge does not Exist* I find a post about this error at here: https://www.domjudge.org/pipermail/domjudge-devel/2016-April/001943.html But I don't know how to fix it by change the permissions. Please help. Thanks! -- _________________________ Name: Nguyen Van Quan Come from: OTVINA company Email: nguyenvanquan7826(a)gmail.com Blog: nguyenvanquan7826.com Phone: +84.96.567.7826

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docker.io/domjudge/domserver disappeared on Dec 11th
by Mathias Rav 19 Dec '17

19 Dec '17

Until December 11th, there was a "domjudge" user on Docker Hub hosting two images: https://hub.docker.com/r/domjudge/domserver/ https://hub.docker.com/r/domjudge/judgehost/ Since December 11th this user seems to have disappeared from the site. Does anyone know who maintained the images and why they are now gone? They have been working just fine for me. Sorry if this list is not the appropriate place for the question. Best regards, Mathias Rav PhD student at Aarhus University, Denmark

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Fwd: Re: domjudge-run submission problem
by Jaap Eldering 12 Dec '17

12 Dec '17

Forwarding the resolution below FYI. Jaap -------- Original Message -------- From: gazibot <infogazibot(a)gmail.com> Sent: December 12, 2017 12:34:57 AM GMT+01:00 To: Jaap Eldering <jaap(a)jaapeldering.nl> Subject: Re: domjudge-run submission problem OMG, IT WORKED I am the happiest guy in the World for 5 minutes. This is the solution that I found for aws ec2 servers Changing the kernel boot parameters on AWS for the official Ubuntu images is just as simple as editing /etc/default/grub.d/50-cloudimg-settings.cfg in the same way you’d usually edit /etc/default/grub. Note that you have to run ‘update-grub’ afterwards and then reboot. Best, Fatih 2017-12-12 2:17 GMT+03:00 gazibot <infogazibot(a)gmail.com>: > $ cat /proc/cmdline > BOOT_IMAGE=/boot/vmlinuz-4.4.0-1041-aws root=UUID=512611f4-b05a-4d8a-b743-438b71c5385d > ro console=tty1 console=ttyS0 > > yes, I am on aws. This system started to getting hard to me. > > Best, > > 2017-12-12 2:09 GMT+03:00 Jaap Eldering <jaap(a)jaapeldering.nl>: > >> On 12/12/17 00:01, gazibot wrote: >> > >> > unfortunately, It does not. After I run /sudo groupadd domjudge-run . >> New error popped up / >> > >> > Compiling failed with exitcode 255, compiler output: >> > /home/ubuntu/domjudge/judgehost/bin/runguard: creating cgroup: Failed >> to remove a non-empty group(50029) >> > Try `/home/ubuntu/domjudge/judgehost/bin/runguard --help' for more >> information. >> > Error: failed to set /sys/fs/cgroup/memory/domjudge >> /dj_cgroup_2169/memory.memsw.limit_in_bytes: Cgroup, requested group >> parameter does not exist >> > >> > >> > >> > than I Edit |/etc/default/grub| and change the default commandline to >> > >> > /GRUB_CMDLINE_LINUX_DEFAULT="quiet cgroup_enable=memory swapaccount=1" >> / >> > >> > than/update-grub /and/reboot/ >> > >> > than sudo ./home/ubuntu/domjudge/judgehost/bin/create_cgroups >> > >> > >> > but this error continued , >> > >> > Compiling failed with exitcode 255, compiler output: >> > /home/ubuntu/domjudge/judgehost/bin/runguard: creating cgroup: Failed >> to remove a non-empty group(50029) >> > Try `/home/ubuntu/domjudge/judgehost/bin/runguard --help' for more >> information. >> > Error: failed to set /sys/fs/cgroup/memory/domjudge >> /dj_cgroup_2169/memory.memsw.limit_in_bytes: Cgroup, requested group >> parameter does not exist >> >> Can you show the output of 'cat /proc/cmdline'? It should contain >> "cgroup_enable=memory swapaccount=1". >> >> From previous lines I think I saw you're running on AWS, and there you >> may need a different way to change the kernel boot parameters, but I don't >> know exactly how. Maybe someone else can step in, or you'd have to search >> the AWS documentation for how to do so. >> >> Best, >> Jaap >> >> >> >> > 2017-12-12 1:39 GMT+03:00 Jaap Eldering <jaap(a)jaapeldering.nl <mailto: >> jaap(a)jaapeldering.nl>>: >> > >> > On 11/12/17 21:05, gazibot wrote: >> > > Hi, >> > > Please, I have some trouble. I am trying the implment domjudge >> for 2th time. Now I working on fresh system and try to setup domjudge >> v5.2.0 on ubuntu 16.04. there was no error in any steps. But after >> submission returns this error. >> > > >> > > Compiling failed with exitcode 255, compiler output: >> > > /home/ubuntu/domjudge/judgehost/bin/runguard: invalid groupname >> or ID specified: `domjudge-run' >> > > Try `/home/ubuntu/domjudge/judgehost/bin/runguard --help' for >> more information. >> > >> > It looks like you missed the command >> > >> > sudo groupadd domjudge-run >> > >> > under https://www.domjudge.org/docs/admin-manual-3.html#ss3.7 < >> https://www.domjudge.org/docs/admin-manual-3.html#ss3.7>. Does that help? >> > >> > Best, >> > Jaap >> > >> > >> > >> > > This is whole my terminal commands given below. >> > > >> > > sudo apt-get update >> > > >> > > sudo apt install gcc g++ make zip unzip mysql-server \ >> > > apache2 php php-cli libapache2-mod-php \ >> > > php-gd php-curl php-mysql php-json php-zip \ >> > > php-mcrypt php-gmp php-xml php-mbstring \ >> > > bsdmainutils ntp phpmyadmin libcgroup-dev \ >> > > linuxdoc-tools linuxdoc-tools-text \ >> > > groff texlive-latex-recommended texlive-latex-extra \ >> > > texlive-fonts-recommended texlive-lang-european >> > > >> > > sudo phpenmod json >> > > >> > > sudo apt install libcurl4-gnutls-dev libjsoncpp-dev libmagic-dev >> > > >> > > sudo apt install make sudo debootstrap libcgroup-dev \ >> > > php-cli php-curl php-json php-zip procps \ >> > > gcc g++ openjdk-8-jre-headless \ >> > > openjdk-8-jdk ghc fp-compiler >> > > >> > > download domjudge wget >> > > >> > > tar xvfz domjudge.tar.gz >> > > >> > > change drictory t0 the extracted folder >> > > >> > > ./configure --prefix=$HOME/domjudge --with-baseurl=localhost/domju >> dge/ >> > > >> > > make domserver && sudo make install-domserver >> > > make judgehost && sudo make install-judgehost >> > > make docs && sudo make install-docs >> > > >> > > ./bin/dj_setup_database -u root -r install >> > > >> > > sudo ln -s /home/ubuntu/domjudge/domserver/etc/apache.conf >> /etc/apache2/conf-available/domjudge.conf >> > > >> > > sudo a2enconf domjudge >> > > >> > > sudo service apache2 reload >> > > >> > > // in the /etc/apache2/conf-available/domjudge.conf file, >> comment out all of this: >> > > // Order allow,deny >> > > // Allow from all >> > > // And replace with: >> > > // Require all granted >> > > sudo vim /etc/apache2/conf-available/domjudge.conf >> > > >> > > sudo apache2ctl graceful >> > > >> > > sudo useradd -d /nonexistent -g nogroup -s /bin/false domjudge-run >> > > sudo useradd -d /nonexistent -g nogroup -s /bin/false >> domjudge-run-0 >> > > >> > > cd judgehost >> > > sudo cp etc/sudoers-domjudge /etc/sudoers.d/ >> > > >> > > sudo /etc/init.d/mysql restart >> > > >> > > sudo apt-get install libcgroup-dev >> > > >> > > cd /home/ubuntu/domjudge/judgehost/bin >> > > >> > > sudo ./dj_make_chroot >> > > sudo ./create_cgroups >> > > ./judgedaemon -n 0 >> > > >> > > >> > > Best, >> > > Fatih >> > >> > >> >> > -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

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Re: URGENT DOMjudge PROBLEM in Southern California
by Marc Furon 13 Nov '17

13 Nov '17

Tobias Werth wrote: > I don't have phone reception but I've sent you an invite to chat > via hangouts. Perhaps you can give more details on the compile > error or give me admin access to your domjudge installation? Tobi, THANK YOU so much for jumping in to help, and thanks to Keith as well. Fixing the permissions on the judging directory (/opt/domjudge/judgehost/judgings) got us back to where we were before, and we made some quick adjustments to the Apache configuration that seemed to help. I can't say for certain if that fixed everything because at that point the contest was close to over (we extended it by one hour) and some teams may have taken off already if they were not in the running. However, we were ultimately able to judge everything and complete the contest (albeit with contestants programming with no feedback for two hours). We in Southern California (that means me) would like to take you up on your offer for assistance with root cause analysis. I have the contest server sitting next to me here at home and can provide anything you might want that would help with troubleshooting. Please let me know what the best way will be to proceed. I owe the DOMjudge team big-time. Marc

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Sample Test Downloads
by Marc Furon 10 Nov '17

10 Nov '17

As I recall, this feature is now supported in 5.2 and later. I have installed 5.3.0. How do contestants access the sample input and output files? I looked in the places where I would expect to find it but did not see it, nor did I see it in the team manual. Regards, Marc

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