ubergeek42

{-
 - Author: Keith Johnson, kjohns07@my.fit.edu
 - Course: CSE5400, Spring 2011
 - Project: endo1
-}

module Main where

import Text.Printf
main :: IO()

ubergeek42

{-# OPTIONS_GHC -Wall -O2 #-}

module Main where

main :: IO()
main = interact (solve . readTestCases)

-- This builds a list of lists representing the problem
readTestCases :: String -> [[Int]]
readTestCases = parse 1 . map read . words

ubergeek42

Compiling failed with exitcode 134, compiler output:
/opt/judgehost/bin/runguard: verbose: watchdog using user ID `999'
/opt/judgehost/bin/runguard: verbose: using timelimit of 30.000 seconds
/opt/judgehost/bin/runguard: verbose: setting filesize limit to 67108864 bytes
/opt/judgehost/bin/runguard: verbose: disabling core dumps
/opt/judgehost/bin/runguard: verbose: reset user ID to `999' for command
boolfind-test-correct.c: In function 'main':
boolfind-test-correct.c:23:7: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
boolfind-test-correct.c:27:8: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
boolfind-test-correct.c:35:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]

ubergeek42

From fa9abfec5db30585f8c5f03e19e3448fc7c7a31b Mon Sep 17 00:00:00 2001
From: Keith Johnson <kj@ubergeek42.com>
Date: Sat, 23 Mar 2013 11:24:19 -0400
Subject: [PATCH] Use cgroups to provide memory limits in runguard

---
 configure.ac     |   5 ++-
 judge/Makefile   |   2 +-
 judge/runguard.c | 124 +++++++++++++++++++++++++++++++++++++++++++++++++++----
 paths.mk.in      |   3 ++

ubergeek42

diff --git a/judge/judgedaemon.main.php b/judge/judgedaemon.main.php
index e9fefb4..a65b9a4 100644
--- a/judge/judgedaemon.main.php
+++ b/judge/judgedaemon.main.php
@@ -101,6 +101,8 @@ while( !$exitsignalled )
                $row = $DB->q('MAYBETUPLE SELECT * FROM judgehost WHERE hostname = %s'
                             , $myhost);
                if ( ! $row ) {
+                       // self register the judgehost
+                       $DB->q('INSERT INTO judgehost SET hostname = %s, active = 1', $myhost);

ubergeek42

#!/bin/sh

# ADA compile wrapper-script for 'compile.sh'.
# See that script for syntax and more info.

DEST="$1" ; shift
MEMLIMIT="$1" ; shift
MAINSOURCE="$1"

# -static:         Static link with all libraries

ubergeek42

#!/bin/sh
#
# Script to generate a minimal chroot environment with Oracle (Sun) Java
# support to allow for Java programs to run in a chroot.
#
# This script downloads and installs a Ubuntu base system.
# Minimum requirements: a Linux system with glibc >= 2.3, wget, ar and
# a POSIX shell in /bin/sh. About 250 MB disk space is needed. It must
# be run as root and will install the Debian debootstrap package.
#

ubergeek42

From 989e3790855bbca25a26dcaca7c0174689d5fd69 Mon Sep 17 00:00:00 2001
From: Keith Johnson <kj@ubergeek42.com>
Date: Fri, 24 May 2013 10:44:21 -0400
Subject: [PATCH] Minor bugfixes

lib.database needs to handle another error code, it changes based on
mysql version.

team_affiliation was changed to use a MAYBETUPLE so that the error
check that occurs on the next line actually works.

ubergeek42

diff --git a/etc/cgroup-domjudge.conf.in b/etc/cgroup-domjudge.conf.in
index 1d6cb42..b7f3415
--- a/etc/cgroup-domjudge.conf.in
+++ b/etc/cgroup-domjudge.conf.in
@@ -18,4 +18,11 @@ group domjudge {
        memory {
 # This section is an empty stub: the limits are set by runguard.
        }
+# Change the cpuset.cpus line to a range specifying the cores you are
+# going to use.  e.g. if you have a quad core machine, set cpuset.cpus = 0-3

ubergeek42

From 2622a5aedf455abf1e6cbfffd2d7704065923186 Mon Sep 17 00:00:00 2001
From: Keith Johnson <kj@ubergeek42.com>
Date: Tue, 18 Jun 2013 12:26:42 -0400
Subject: Allow multiple judgedaemons on a single machine

Add support for running multiple judgedaemons at once on a single
machine.  This allows for better use of multiple cpu cores.  To provide
for better isolation between the judegdaemons, the cpuset cgroup support
is used to limit processes to a single cpu core.
---