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25%
Checking password complexity with John the Ripper
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
$ john -wordlist:password.lst passfile.txt 02 Loaded 2 passwords with 2 different salts (FreeBSD MD5 [32/64]) 03 admin (root) 04 t-bone (khess) 05 guesses: 2 time: 0:00:00:00 100% c
25%
Speed up your MySQL database
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Mikhail Dudarev, 123RF.com
.40 <- < 71% idle > 0 1.00 0.00 0.37 0.00 0.00 0.06 0.00 0.00 0.00 98.57 1 100.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 3.77 0.00
25%
Listing 2
21.08.2012
Home »  HPC  »  Articles  »  Warewulf 4 Code  » 
 
.6 M Is this ok [y/N]: y Downloading Packages: (1/5): apr-1.3.9-3.el6_1.2.i686.rpm                                            | 128 kB     00:00 (2/5): expat-2.0.1-11.el6_2.i686.rpm
25%
Warewulf Cluster Manager – Completing the Environment
20.06.2012
Home »  HPC  »  Articles  » 
is to find out whether it runs on the master node when it is booted by using the chkconfig command: [root@test1 etc]# chkconfig --list ... nfs 0:off 1:off 2:off 3:off 4:off 5:off 6
24%
Understanding Layer 2 switch port security
22.12.2017
Home »  Archive  »  2017  »  Issue 42: Secur...  » 
Lead Image © Taffi, Fotolia.com
) win 512 98:15:eb:38:f3:c1 c8:d7:c1:61:be:a3 0.0.0.0.30693 > 0.0.0.0.57646: S 1759104040:1759104040(0) win 512 dc:6d:43:15:be:52 99:19:41:22:4e:36 0.0.0.0.29211 > 0.0.0.0.63665: S 481173385:481173385(0
24%
Monitoring Performance with sar
05.03.2014
Home »  Articles  » 
 -s 12:00:00 -e 13:00:00 Linux 3.5.0-43-generic (hercules)         02.12.2013      _x86_64_        (2 CPU)    12:05:01        CPU     %user     %nice   %system   %iowait    %steal     %idle 12
24%
Collecting and evaluating performance data over a period of time
20.03.2014
Home »  Archive  »  2014  »  Issue 19: Perim...  » 
Lead Image © Sergey Nivens, 123RF.com
jcb@hercules:# sar -u -f /var/log/sysstat/sa02 -s 12:00:00 -e 13:00:00 Linux 3.5.0-43-generic (hercules) 02.12.2013 _x86_64_ (2 CPU) 12:05:01 CPU %user %nice %system
24%
Processor and Memory Metrics
12.02.2014
Home »  HPC  »  Articles  » 
.py  CPU ALL:  1.0  %  CPU0    4.1%  CPU1    2.0%  CPU2    0.0%  CPU3    0.0%  CPU4    0.0%  CPU5    0.0%  CPU6    0.0%  CPU7    2.0%  CPU ALL:    user:      0.7%  nice:    0.0%    system:    0.2%  idle
24%
Resource Management with Slurm
05.11.2018
Home »  HPC  »  Articles  » 
Name=slurm-node-0[0-1] Gres=gpu:2 CPUs=10 Sockets=1 CoresPerSocket=10 \ ThreadsPerCore=1 RealMemory=30000 State=UNKNOWN PartitionName=compute Nodes=ALL Default=YES MaxTime=48:00:00 DefaultTime=04:00:00 \ Max
24%
Resource Management with Slurm
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image © Vladislav Kochelaevs, fotolia.com
In previous articles, I examined some fundamental tools for HPC systems, including pdsh [1] (parallel shells), Lmod environment modules [2], and shared storage with NFS and SSHFS [3]. One remaining

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