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194 discussions

Help me fix install domjudge on centos 6
by Nguyễn Văn Quân 22 Jul '18

22 Jul '18

Hi, I am install domjudge on centos 6. I have some problem: 1. I can not find how to edit grup when try find file contain GRUB_CMDLINE_LINUX_DEFAULT 2. When I try run bin/judgedaemon, It show error: [Jul 22 07:39:41.424] judgedaemon[21360]: Judge started on laptrinh [DOMjudge/5.3.2] [Jul 22 07:39:41.428] judgedaemon[21360]: Registering judgehost on endpoint http://localhost/domjudge/api [Jul 22 07:39:41.439] judgedaemon[21360]: error: Error while executing curl POST to url http://localhost/domjudge/api/judgehosts: couldn't connect to host I try to change localhos to main domain in restapi.secret file but it have same error: [Jul 22 08:05:24.360] judgedaemon[23100]: Judge started on laptrinh [DOMjudge/5.3.2] [Jul 22 08:05:24.365] judgedaemon[23100]: Registering judgehost on endpoint http://ictu.olp.cachhoc.net/domjudge/api [Jul 22 08:06:27.374] judgedaemon[23100]: error: Error while executing curl POST to url http://ictu.olp.cachhoc.net/domjudge/api/judgehosts: couldn't connect to host Please help me fix 2 bug. Thanks! -- _________________________ Name: Nguyen Van Quan Come from: Bac Ninh, Viet Nam Email: nguyenvanquan7826(a)gmail.com Blog: nguyenvanquan7826.com Phone: +84.96.567.7826

2 1

[Domjudge]: Run checker developed in Checker framework problem?
by Bình Dương, Tran 22 Jul '18

22 Jul '18

Dear Sir, I have a checker from problem set of Northern Eurasia Programming Contest 2017 ( I uploaded it to my google driver and share it below ). The checker had been compiled and packaged into a jar file. I wrapped it by a run script. When I apply this checker (compare checker type) to the problem and trying to evaluate a submission, the following error arose: ==================== [Jul 11 04:58:49.719] testcase_run.sh[48059]: Comparing failed with exitcode 0, compare script output: [Jul 11 04:58:49.731] judgedaemon[47929]: error: Unknown exitcode from testcase_run.sh for s801, testcase 1: 1 ==================== I don't know how to fix it or make the checker work properly, please help me to do that. P/S: Because the original file has been blocked by google security service, I changed its extension to .zi, please rename it back to .zip and check. You can download the checker file from: "https://drive.google.com/open?id=1sV4UDRFS5i3c8HVRqA3UJiLLvumUx8GK" Regards, -- [Điện thoại: (04) 37687717 – Máy lẻ: 100]<http://Email:%20linhpt@fpt.edu.vn/> Thanks & Best regards ------------------------------------ TRẦN BÌNH DƯƠNG Giảng viên bộ môn Công Nghệ Phần mềm Trường Đại học FPT Tel: (04) 37687717 – Máy lẻ: 104 Mobile: 0936 168 165 Email: duongtb(a)fe.edu.vn<mailto:duongtb@fe.edu.vn> _______________________________________________________________________ The information in this e-mail and any attached files are CONFIDENTIAL and may be legally privileged or prohibited from disclosure and unauthorized use. The views of the author may not necessarily reflect those of the Company. It is intended solely for the addressee or the employee or agent responsible for delivering such materials to the addressee. If you have received this message in error please return it to the sender then delete the email and destroy any copies of it. If you are not the intended recipient, any form of reproduction, dissemination, copying, disclosure, modification, distribution and/or publication or any action taken or omitted to be taken in reliance upon this message or its attachments is prohibited and may be unlawful. At present the integrity of e-mail across the Internet cannot be guaranteed and messages sent via this medium are potentially at risk. All liability is excluded to the extent permitted by law for any claims arising as a result of the use of this medium to transmit information by or to FPT University. [https://mail.fpt.com.vn/sign.png] This email and any attachment is intended for use only by specified addressees and may contain legally privileged and/or confidential information. If you are not an intended recipient, please delete the original and any copy of this message, notify the writer by email or telephone at (84-24) 7300 7300 and accept our apologies for any inconvenience. * Please consider the environment before you print this email.

2 2

Network Access inside Chroot environment
by Sarthak Garg 19 Jul '18

19 Jul '18

Hey, We are trying to integrate selenium with domjudge. Could you please help in figuring out the ways we can provide network access in chroot environment. We are trying to run the code below via domjudge. And domjudge is returning the following exception: java.net.UnknownHostException: www.google.com. Could you let us known if there is a work around. code: import java.net.*; import java.io.*; public class Solution { public static void main(String[] args) throws Exception { URL str = new URL("http://www.google.com/"); BufferedReader in = new BufferedReader( new InputStreamReader(str.openStream())); String inputLine; while ((inputLine = in.readLine()) != null) System.out.println(inputLine); in.close(); } }

2 1

Information About: Configuration of Domjudge on ICPC World Finals
by Bình Dương, Tran 18 Jul '18

18 Jul '18

Dear Domjudge Team, Thank for your information on any new proud event of DOMjudge team. I'm working in FPT University in Viet Nam, we have been deploy domjudge in our university to train our ACM Teams. Recently, We would like to expand the ACM training program movement. So one of questions which we are trying to answer is "What is the configuration of Domjudge which is able to support for a contest with about 300 contestants who work individually?" So, could you share to me some information about the configuration which DOMjudge team has been organized in the ICPC World Finals Contest? Thanks for your support. Regards, -- [image: Điện thoại: (04) 37687717 – Máy lẻ: 100] <http://Email:%20linhpt@fpt.edu.vn/> Thanks & Best regards ------------------------------------ *TRẦN BÌNH DƯƠNG * Giảng viên bộ môn Công Nghệ Phần mềm Trường Đại học FPT Tel: (04) 37687717 – Máy lẻ: 104 Mobile: 0936 168 165 Email: duongtb(a)fe.edu.vn _______________________________________________________________________ The information in this e-mail and any attached files are CONFIDENTIAL and may be legally privileged or prohibited from disclosure and unauthorized use. The views of the author may not necessarily reflect those of the Company. It is intended solely for the addressee or the employee or agent responsible for delivering such materials to the addressee. If you have received this message in error please return it to the sender then delete the email and destroy any copies of it. If you are not the intended recipient, any form of reproduction, dissemination, copying, disclosure, modification, distribution and/or publication or any action taken or omitted to be taken in reliance upon this message or its attachments is prohibited and may be unlawful. At present the integrity of e-mail across the Internet cannot be guaranteed and messages sent via this medium are potentially at risk. All liability is excluded to the extent permitted by law for any claims arising as a result of the use of this medium to transmit information by or to FPT University.

2 4

Re: Error while launching the dj_setup_database install
by Nicky Gerritsen 09 Jul '18

09 Jul '18

Hi Guillaume, Please don’t forgot to add the devel list in your mails. For your question: I’m not entirely sure. I think you can configure it using the MySQL server configuration. Regards, Nicky > On 6 Jul 2018, at 13:59, Guillaume MILAN <guillaumilan(a)gmail.com> wrote: > > Hi Nicky > Is it possible to change the mysql default collation? To be able to create the domjudge data base with the correct collation? > > Regards, > Guillaume > > > Le 6 juil. 2018 13:09, "Nicky Gerritsen" <nickygerritsen(a)me.com <mailto:nickygerritsen@me.com>> a écrit : > Hi Guillaume, > > This might happen with specific MySQL collations. If I remember correctly either utf8 or utf8mb4 has this issue and the other doesn’t. > > Regards, > > Nicky > >> On 6 Jul 2018, at 13:04, Guillaume MILAN <guillaumilan(a)gmail.com <mailto:guillaumilan@gmail.com>> wrote: >> >> Hello while I launch the dj_setup_database executable, >> I receive the following error. >> >> ERROR 1071 (42000) at line 436: Specified key was too long; max key length is 767 bytes >> >> Do you know what can create this error? >> >> Regards >> Guillaume >> >> _______________________________________________ >> DOMjudge-devel mailing list >> DOMjudge-devel(a)domjudge.org <mailto:DOMjudge-devel@domjudge.org> >> https://www.domjudge.org/mailman/listinfo/domjudge-devel <https://www.domjudge.org/mailman/listinfo/domjudge-devel> > >

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Error while launching the dj_setup_database install
by Guillaume MILAN 06 Jul '18

06 Jul '18

Hello while I launch the dj_setup_database executable, I receive the following error. *ERROR 1071 (42000) at line 436: Specified key was too long; max key length is 767 bytes* Do you know what can create this error? Regards Guillaume

2 1

[Domjudge] : Internal error occurred
by Bình Dương, Tran 26 Jun '18

26 Jun '18

Dear Sirs, When a contestant submit his work to server for judgement and the problem have a checker need to execute to compare the result, I got following message, I don't know how to solve this problem and how to prevent it happen again. [Jun 18 20:34:26.475] judgedaemon[12171]: API request GET config [Jun 18 20:34:26.564] judgedaemon[12171]: API request GET config [Jun 18 20:34:26.654] judgedaemon[12171]: Working directory: /opt/domjudge/judgehost/judgings/UPM02/endpoint-default/c5-s207-j239 [Jun 18 20:34:26.658] judgedaemon[12171]: API request GET submission_files [Jun 18 20:34:26.754] compile.sh[45693]: starting '/opt/domjudge/judgehost/lib/judge/compile.sh', PID = 45693 [Jun 18 20:34:26.757] compile.sh[45693]: arguments: '/opt/domjudge/judgehost/judgings/UPM02/endpoint-default/executable/cpp/run' '/opt/domjudge/judgehost/judgings/UPM02/endpoint-default/c5-s207-j239' [Jun 18 20:34:26.760] compile.sh[45693]: source file(s): D.cpp [Jun 18 20:34:26.766] compile.sh[45693]: starting compile [Jun 18 20:34:27.980] compile.sh[45693]: checking compilation exit-status [Jun 18 20:34:27.986] compile.sh[45693]: Compilation successful [Jun 18 20:34:27.989] compile.sh[45693]: exiting, code = '0' [Jun 18 20:34:27.992] judgedaemon[12171]: API request PUT judgings/239 [Jun 18 20:34:28.084] judgedaemon[12171]: executing chroot script: 'chroot-startstop.sh start' [Jun 18 20:34:28.222] judgedaemon[12171]: API request GET config [Jun 18 20:34:28.315] judgedaemon[12171]: API request GET testcases [Jun 18 20:34:28.409] judgedaemon[12171]: Running testcase 1... [Jun 18 20:34:28.417] judgedaemon[12171]: Fetching new executable 'checker_disarray' [Jun 18 20:34:28.424] judgedaemon[12171]: API request GET executable [Jun 18 20:34:28.519] judgedaemon[12171]: Unzipping [Jun 18 20:34:28.523] judgedaemon[12171]: fetching executable failed for compare script 'checker_disarray':Invalid executable, file 'build' exists but is not executable. Please give me some guides. Regards, -- [image: Điện thoại: (04) 37687717 – Máy lẻ: 100] <http://Email:%20linhpt@fpt.edu.vn/> Thanks & Best regards ------------------------------------ *TRẦN BÌNH DƯƠNG * Giảng viên bộ môn Công Nghệ Phần mềm Trường Đại học FPT Tel: (04) 37687717 – Máy lẻ: 104 Mobile: 0936 168 165 Email: duongtb(a)fe.edu.vn _______________________________________________________________________ The information in this e-mail and any attached files are CONFIDENTIAL and may be legally privileged or prohibited from disclosure and unauthorized use. The views of the author may not necessarily reflect those of the Company. It is intended solely for the addressee or the employee or agent responsible for delivering such materials to the addressee. If you have received this message in error please return it to the sender then delete the email and destroy any copies of it. If you are not the intended recipient, any form of reproduction, dissemination, copying, disclosure, modification, distribution and/or publication or any action taken or omitted to be taken in reliance upon this message or its attachments is prohibited and may be unlawful. At present the integrity of e-mail across the Internet cannot be guaranteed and messages sent via this medium are potentially at risk. All liability is excluded to the extent permitted by law for any claims arising as a result of the use of this medium to transmit information by or to FPT University.

3 4

Swap for judgehosts
by Wim de With 07 May '18

07 May '18

Hello, I was reading the adminstrators manual and I have a question about the section about setting up a judgehost: https://www.domjudge.org/docs/admin-manual-3.html#ss3.7 It recommends the 'swapaccount=1' kernel parameter, but that made me wonder if you actually want swap on a judgehost. I'm not fully familiar with how Linux processes and swap work in detail, but say a judgehost is judging a random submission while the RAM of the host is almost exhausted. If the memory is swapped to disk to clear space for the memory allocated by the submission, doesn't that potentially heavily impact the run time of the submission? And if that's true, wouldn't you see a TIMELIMIT that is not fully justified, because while you might not exceed CPU time, you will exceed wall time? I hope you can shed some light on this. Regards, Wim

4 4

API Call is Running Slow
by Andrew Jauhari 06 May '18

06 May '18

Dear Mr. Jaap, We are currently having problem with 20+ of testcase our judging process is running slow. In debugging process, we found out that process of API Call in fetching config and testcases is 5 to 7 seconds each. The compiling and executing process has no problem in time manner. Do you have suggestion where we can fix about this ? Regards, Andrew Jauhari --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

2 1

Presence at the World Finals
by Jaap Eldering 15 Apr '18

15 Apr '18

Hi all, The DOMjudge team is again present at the ICPC World Finals this year. As we speak we're already setting up our systems, and running as the primary contest control system this year! If anyone is interested to talk and meet, please do get in touch or simply find us at the WFs! We love to talk and get feedback, discuss your use cases, issues, feature (requests), etc. Best, Jaap

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