DOMjudge-devel

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194 discussions

Compiler error problem
by Aneesh R 06 May '16

06 May '16

Dear team , My name is Aneesh from Kerala, India. I have using Domjudge server version 5.0.3 and its functioning very well also its deployed in Amazon web server, now my problem is some of the code is compilation is unsuccessful the description is Compiling failed with exitcode 1, compiler output: collect2: error: ld returned 1 exit status So please help me ....asap Regards Aneesh

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Please help
by Huynh Anh Dung 29 Apr '16

29 Apr '16

Hi Jaap, I increase the MEMRESERVED variable in the java executable compile script to 4GB then I do compile java again, problem output : Problem: A - A Submitted: 09:39 Language: Java Result: compiler-error Compilation output Compiling failed with exitcode 1, compiler output: Error occurred during initialization of VM Could not reserve enough space for object heap Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. Compilation failed. Include images please have a look Lec. Huỳnh Anh Dũng ACM/ICPC SUPERVISOR FPT UNIVERSITY. http://www.fpt.edu.vn -----Original Message----- From: DOMjudge-devel [mailto:domjudge-devel-bounces@domjudge.org] On Behalf Of Jaap Eldering Sent: Thursday, April 28, 2016 9:27 AM To: domjudge-devel(a)domjudge.org Subject: Re: Questions Did you also increase the MEMRESERVED variable in the java executable compile script accordingly, e.g. to 4 GB? (something below the real memory limit, because the difference is what's available to the java submission) Jaap On 27-04-16 23:20, Huynh Anh Dung wrote: > Hi Jaap > I upgrade memory from 6 GB to 8GB then I do compile java file again, this this output problem. > Problem: A - A > Submitted: 09:17 > Language: Java > Result: compiler-error > > Compilation output > > Compiling failed with exitcode 1, compiler output: > Error occurred during initialization of VM Could not reserve enough > space for object heap > Error: Could not create the Java Virtual Machine. > Error: A fatal exception has occurred. Program will exit. > > Compilation failed. > > Lec. Huỳnh Anh Dũng > ACM/ICPC SUPERVISOR > FPT UNIVERSITY. > http://www.fpt.edu.vn > > -----Original Message----- > From: DOMjudge-devel [mailto:domjudge-devel-bounces@domjudge.org] On > Behalf Of Jaap Eldering > Sent: Thursday, April 28, 2016 8:57 AM > To: domjudge-devel(a)domjudge.org > Subject: Re: Questions > > Hello Huỳnh Anh Dũng, > > Given your previous email you don't have cgroups enabled. In that case you should raise the memory limit to something quite high. I'd suggest to start with 2GB and increment this to 2.5 and 3 GB if it doesn't work yet. That's because the Java VM pre-allocates a lot of memory. With cgroup support this is not an issue, but without you have to add that overhead to the memory limit. Then you also have to change the value of MEMRESERVED in the java compile script executable you use (java_javac_detect by default). > > If you're trying to enable cgroups, then make sure to follow the instructions in the administrators manual. In particular, make sure to edit the boot options, reboot, and after that, again run './configure' > and rebuild and reinstall domjudge. > > Jaap > > > > On 27-04-16 22:38, Huynh Anh Dung wrote: >> Hi, >> My default setting, I need to change any value here, to help system can compile java file. >> >> Lec. Huỳnh Anh Dũng >> ACM/ICPC SUPERVISOR >> FPT UNIVERSITY. >> http://www.fpt.edu.vn >> >> -----Original Message----- >> From: Tobias Werth [mailto:tobias.werth@fau.de] >> Sent: Thursday, April 28, 2016 12:24 AM >> To: Huynh Anh Dung <dungha(a)fpt.edu.vn>; 'Jesús Alberto Domínguez >> Alfonso' <jesusalbertodominguez1983(a)gmail.com>; >> DOMjudge-devel(a)domjudge.org >> Subject: Re: Questions >> >> Hi, >> >> >> On 04/27/16 17:27, Huynh Anh Dung wrote: >>> define('USE_CHROOT', true); and how to disable to run java file as >>> you recommend >> >> to disable the chroot, you set this value to false. >> Note that disabling the chroot is strongly discouraged since it >> reduces security. >> >> >>> I have problem about JAVA please help how to fix this problem. >> >> I assume that you do not use cgroups (using cgroups is also strongly >> recommended). Then you have to increase the memory limit by a huge margin. >> >> See >> https://www.domjudge.org/docs/admin-manual-8.html#ss8.3 >> for details. >> >> Tobi >> >> >> >> _______________________________________________ >> DOMjudge-devel mailing list >> DOMjudge-devel(a)domjudge.org >> https://www.domjudge.org/mailman/listinfo/domjudge-devel >> > > _______________________________________________ > DOMjudge-devel mailing list > DOMjudge-devel(a)domjudge.org > https://www.domjudge.org/mailman/listinfo/domjudge-devel > _______________________________________________ DOMjudge-devel mailing list DOMjudge-devel(a)domjudge.org https://www.domjudge.org/mailman/listinfo/domjudge-devel

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Re: Questions
by Tobias Werth 28 Apr '16

28 Apr '16

Hi, please address these messages to domjudge-devel instead of using personal mail addresses. *Jesús Alberto Domínguez Alfonso <jesusalbertodominguez1983(a)gmail.com> [16/04/17]: > i have been installed a domjudge-live in a virtual machine. > i choose the domserver and jury at the menu. > i have got logged but later i want to see the webinterface but i can´t. What's the exact error you get? > readme > The web interfaces for jury, team, and public can be found under http:// > <hostname>/domjudge/{jury,team,public} respectively. Here <hostname> is the DNS > name of the DOMjudge-live system. Initially there is the user 'admin' with > password 'admin'. > > i used the dns, i have used the hostname too but i cannot, could you help me > please. Does it work if you use 127.0.0.1 in a browser within the virtual machine itself? Tobi

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ERROR a2enconf
by Huynh Anh Dung 18 Apr '16

18 Apr '16

Hi, After config ln -s ln -s /root/domserver/etc/apache.conf /etc/apache2/conf-available/domjudge.conf && sudo apache2ctl graceful Then I Type command sudo a2enconf domjudge And I get answer ERROR : Conf domjudge does not Exist Please help Lec. Huỳnh Anh Dũng ACM/ICPC SUPERVISOR FPT UNIVERSITY. http://www.fpt.edu.vn -----Original Message----- From: DOMjudge-devel [mailto:domjudge-devel-bounces@domjudge.org] On Behalf Of Tobias Werth Sent: Monday, April 18, 2016 3:18 AM To: Jesús Alberto Domínguez Alfonso <jesusalbertodominguez1983(a)gmail.com> Cc: DOMjudge-devel(a)domjudge.org Subject: Re: Questions Hi, please address these messages to domjudge-devel instead of using personal mail addresses. *Jesús Alberto Domínguez Alfonso <jesusalbertodominguez1983(a)gmail.com> [16/04/17]: > i have been installed a domjudge-live in a virtual machine. > i choose the domserver and jury at the menu. > i have got logged but later i want to see the webinterface but i can´t. What's the exact error you get? > readme > The web interfaces for jury, team, and public can be found under > http:// <hostname>/domjudge/{jury,team,public} respectively. Here > <hostname> is the DNS name of the DOMjudge-live system. Initially > there is the user 'admin' with password 'admin'. > > i used the dns, i have used the hostname too but i cannot, could you > help me please. Does it work if you use 127.0.0.1 in a browser within the virtual machine itself? Tobi

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Questions
by Jesús Alberto Domínguez Alfonso 15 Apr '16

15 Apr '16

Hello, First I think domjudge is amazing, i like it and i want congratulations for your work I have a few questions, 1- Version 5.2.0, do you know when will be stable. 2-Can i include another files in the problem, for example i have a main file .c and this main file has a file fichero.h to include data in file main or another file with functions to include in main file to use. 3- Can I upload and submmit more than one exercise at the same time, for example i have two exercises A and B. 4- the same that point 3 but in the jury system execute more than one exercise at the same time. Thanks kind regards.

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Fwd: Re: Error occurred during initialization of VM
by Jaap Eldering 02 Apr '16

02 Apr '16

Forwarded this to the mailing list: I am travelling atm. -Jaap ------------------------------------------------------------------------ *From:* Raj Baghel <raj.baghel(a)finoit.co.in> *Sent:* 19 March 2016 04:45:15 GMT-03:00 *To:* Jaap Eldering <jaap(a)jaapeldering.nl> *Subject:* Re: Error occurred during initialization of VM Hi Jaap Thanks For your reply and i have subscribed to emaillist Still the problem is same I have increase MEMRESERVED to 3GB on both files java_javac and java_javac_detect I have run ./create_cgroups as well and also set grub_cmdline_linux_default = " quiet cgroup_enable=memory" and update grub still have this error : sudo ./judgedaemon [Mar 19 13:04:49] judgedaemon[3402]: Judge started on f003 [DOMjudge/5.1.0] [Mar 19 13:04:49] judgedaemon[3402]:*Not using cgroups. Using cgroups is highly recommended. See the manual for details.* [Mar 19 13:04:49] judgedaemon[3402]: Registering judgehost on endpoint http://localhost/api/ [Mar 19 13:04:49] judgedaemon[3402]: No submissions in queue (for endpoint default), waiting... Not understand how to enable cgroups My Java programs are not complied although c and C++ programs are working fine. Thanks Raj Baghel On Thu, Mar 17, 2016 at 10:02 PM, Jaap Eldering <jaap(a)jaapeldering.nl <mailto:jaap@jaapeldering.nl>> wrote: Hi Raj, First, please subscribe to this emaillist to make sure that your emails arrive automatically. To what size did you raise the memory limit? Try to raise it at least to 2GB if you're not using Linux cgroups. Unfortunately, the way that memory is reserved by the JVM and counted (using resource limits) by Linux often requires such huge amounts. Therefore we strongly recommend using cgroups: that measures only memory really used by the JVM and requires more reasonable overhead. Best, Jaap On 17-03-16 02:48, Raj Baghel wrote: > Hi Team > > > I am using your DomJudge Product > > i am facing this Error can you help me on that : > > Compiling failed with exitcode 1, compiler output: > Error occurred during initialization of VM > Could not reserve enough space for object heap > Error: Could not create the Java Virtual Machine. > Error: A fatal exception has occurred. Program will exit. > > It works fine for C and C++ program > > I have increase MEMRESERVED in java_javac > > also increase Memory limit and process limit but nothing work for me > > > Thanks > > Raj Baghel > > > > > > > > _______________________________________________ > DOMjudge-devel mailing list > DOMjudge-devel(a)domjudge.org <mailto:DOMjudge-devel@domjudge.org> > https://www.domjudge.org/mailman/listinfo/domjudge-devel > -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

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Issue in View Source code
by Aneesh R 27 Mar '16

27 Mar '16

Dear team , My name is Aneesh from Kerala, India. I have using Domjudge server version 5.0.3 and its functioning very well also its deployed in Amazon web server, now my problem is, i had created a contest on Domjudge and the participants are successfully submitted the solutions and compiled by Domjudge, But one of our jury member trying to access the view source code from submission page it will showing blank page only on the top of the page all tabs are shown like (home, balloon,problems,judgehost,etc..). So how can i solve this problem Regards Aneesh

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Error occurred during initialization of VM
by Raj Baghel 17 Mar '16

17 Mar '16

Hi Team I am using your DomJudge Product i am facing this Error can you help me on that : Compiling failed with exitcode 1, compiler output: Error occurred during initialization of VM Could not reserve enough space for object heap Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. It works fine for C and C++ program I have increase MEMRESERVED in java_javac also increase Memory limit and process limit but nothing work for me Thanks Raj Baghel

2 1

Changes from Munich
by Stefan Toman 07 Mar '16

07 Mar '16

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear DOMjudge developers, first of all thank you for writing DOMjudge. We are using it at TU München, Germany, for many courses and competitions. Having more than 100 contests and 50.000 submissions by 1000 teams we changed many parts of the system and created a fork of your project. We would like to contribute our changes to DOMjudge if you are interested in them. You can see our website for instance at https://judge.in.tum.de/conpra (other sections are available at the top left corner of every page). The sources we use are available at https://git-judge.in.tum.de/icpc/tumjudge. We will create merge requests in case you are interested in our changes. We would do some things a little different when we don't work in our fork. For instance, we created new css and javascript files to avoid conflict when merging your changes. These are the main features we added to the system: * a modern layout based on bootstrap with a nicer menu bar and form controls * teams can also view, download and edit their submissions as jury members can do it already * an overview of points throughout all contests a team participated in, grouped by similar contest names * bonus points can be awarded to teams for individual problems and contests * the statistics page generates some LaTeX commands to include detailed statistics into solution slides * problems have additional fields author, difficulty, topic and source and there are filters for these fields * write access to user and team accounts can be restricted for admins (We run several DOMjudge instances for several courses since we don't want lecturers of different courses to adjust the system as they need it. User accounts are shared via a MySQL replication, which makes user data read-only for all but one instance, all other data, including roles, is not shared.) * links in the menu are customizable in the settings * scoreboards can be shuffled in case you don't want to reveal which problems were solved (see contest 6 at the link given above for an example) * the judge instances are integrated into our website, the news system and the account system of the university (probably nothing that somebody else would need) We also created a framework to create random test data for problems from some seeds. This allows us to run failing submissions of teams on small random inputs until we find one that makes their submission fail. That way, we usually find much smaller inputs that are easier to debug. These scripts can be called from the jury backend and the output is also included into the backend. We hope there are some changes that may be interesting for you. If this is the case please tell us. We can tell you more about what we did there and would like to contribute the corresponding changes. Best regards, Stefan -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQEcBAEBAgAGBQJW2BppAAoJEBKwZA1x2vm6qNUH/RyzQ5BjZdbkkHnRMAiELQHH NTfeSK8Sl5BXXYNPyQ4YmVR3o6NrcCkh5hVzkJzUb7e9Zw+2FRhBVA5OK0MxmOcr syOCXdQXuITNPYdbn4i5gJwdjvaKJmR0r/IFd7kyfuBG4EdbDjo1Au52IxD10p8H pEpa6wwcsuW1jKk78c/EQ8cUnL0uw8T/2KtAvsHh2/siKOecZscZw7/wA3hKHUPx gK4e9wjZ6xbA2Di8HH0zreL8OBPhLH2qNkLdKuzVhYKoFzVXM2UUWMOXN4WQVq0x XH2DfXzoCOC2iWTEeJ7ZVXg0l0isl6LfzFQ5Mbnkd7PmiEBhYSChJkd/cum30e4= =gH0q -----END PGP SIGNATURE-----

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moving to a PHP framework
by Jaap Eldering 05 Feb '16

05 Feb '16

Hello all, During/after the hackathon of 24 January the issue was raised that the codebase of DOMjudge is getting more and more complex and that it would be a good plan to move to a PHP framework to separate code and HTML layout via templating and using an ORM to abstract away the database. The discussion was initiated in a github issue here: https://github.com/DOMjudge/domjudge/issues/198 and I'm attending everyone here to it. If you have any experience with PHP frameworks such as Symfony, Laravel, or others, feel free to chime in, or even help with some initial testing to determine which framework to choose. Jaap

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