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12%
Warewulf 4 – Time and Resource Management
17.01.2023
Home »  HPC  »  Articles  » 
-mod-slurm-ohpc            x86_64     2.34-9.1.ohpc.2.6         OpenHPC-updates      13 k  slurm-devel-ohpc               x86_64     22.05.2-14.1.ohpc.2.6     OpenHPC-updates      83 k  slurm-example-configs-ohpc     x86_64     22
12%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
 for brevity]            8   10.59 so-4-2-0.mpr3.pao1.us.above.net (64.125.28.142)            9   11.00 metro0.sv.svcolo.com (208.185.168.173)            10  9.93  scanme.nmap.org (64.13.134.52)            Nmap
12%
Give your servers the once over with Nmap
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© ragsac, 123RF.com
.nmap.org (64.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 4.3 (protocol 2.0) 25/tcp closed smtp
12%
Enterprise communication with IRC
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© anyka, 123RF.com
; 12 13 /* sendq: servers need a higher sendq as they send more data */ 14 sendq=2 megabytes; 15 }; Additionally, ircd.conf lacks a block that allows connections to other servers ... Running an IRC server might seem almost anachronistic, but the classic service from the early 1990s offers a huge amount of functionality with very little in the line of resources. In the daily grind
12%
Listing 6
21.08.2012
Home »  HPC  »  Articles  »  Warewulf 4 Code  » 
 
6  ### 8/5/2012 7 8  ### Set the job name 9  #PBS -N mpi_pi_fortran90 10 11 ### Run in the queue named “batch” 12 #PBS -q batch 13 14 ### Specify the number of cpus for your job.  This example
12%
Building a HPC cluster with Warewulf 4
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Photo by Andrew Ly on Unsplash
-mod-slurm-ohpc x86_64 2.34-9.1.ohpc.2.6 OpenHPC-updates 13 k slurm-devel-ohpc x86_64 22.05.2-14.1.ohpc.2.6 OpenHPC-updates 83 k slurm-example-configs-ohpc x86
12%
Distributed storage with Sheepdog
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © kateleigh, 123RF.com
Sheepdog Server in Action # ps -ef|egrep '([c]orosyn|[s]heep)' root 491 1 0 13:04 ? 00:00:30 corosync root 581 1 0 1:13 PM ? 00:00:03 sheep -p 7000 /var
12%
Asynchronous PostgreSQL
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © Fesus Robert, 123RF.com
=$dbh->prepare('select burncpu(?)'); 12 $sth->execute((($ENV{QUERY_STRING}+0) || .5).'s'); 13 14 while( my $row=$sth->fetchrow_arrayref ) { 15 print "@$row\n"; 16 } Workaround The script is simple, but the attentive
12%
Monitor your nodes with collectl
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© nobeastsofierce, 123RF.com
Commands = -f /var/log/collectl -r00:00,7 -m -F60 -s+YZCD --iosize These options allow me to monitor CPU, disk, and network in brief mode and slab, processes, and disk in detailed mode. I also added the ability
12%
Gathering Data on Environment Modules
10.09.2012
Home »  HPC  »  Articles  » 
to logfiles, and it’s pretty simple to use: [laytonjb@test1 ~]$ logger "This is a test" ... [root@test1 ~]# tail -n 2 /var/log/messages Aug 22 15:54:47 test1 avahi-daemon[1398]: Invalid query packet. Aug 22 17:00

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