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13%
GNU Parallel: Multicore at the Command Line with GNU Parallel
04.11.2011
Home »  HPC  »  Articles  » 
 desktop 06 7 desktop 07 8 desktop 08 10 desktop 09 9 desktop 10 1 serverer 11 2 serverer 12 3 serverer 13 4 serverer The command processes the numbers from 1 to 10 inclusive, running as many jobs on each
13%
Managing virtual machines
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Igor Klimov, 123RF.com
"creating" $vmname 09 10 virsh suspend rhstorage 11 virt-clone -o rhstorage -n $vmname -f /var/lib/libvirt/images/$vmname.qcow 12 virsh resume rhstorage 13 14 oldmac="52:54:00:B4:DF:EB" 15 newmac
13%
Using loop directives to improve performance
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Lead Image © orson, 123RF.com
of an application allows it to run faster and scale better than serial applications (see Amdahl's law [3]). Today's processors have multiple cores, and accelerators such as GPUs have thousands of lightweight cores
13%
SSH Administration – Windows in a Unix World
30.11.2025
Home »  Archive  »  2010  »  Issue 0: Active...  » 
Gino Santa Maria, 123RF.com
to a remote host, allow this with the command $ xhost + and then export your display to the remote host on which you want to view the applications. $ export DISPLAY=hostname:0.0 On the system
13%
Developing RESTful APIs
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © bowie15, 123RF.com
=> 'sqlite3', 09 :database => 'contacts.sqlite' 10 ) 11 12 class Contact < ActiveRecord::Base 13 end 14 15 get '/contacts' do 16 @contacts = Contact.all 17 @response_message = {data: @contacts, success
13%
OpenACC – Parallelizing Loops
09.01.2019
Home »  HPC  »  Articles  » 
of the loop, n , is large enough, some processing hardware can greatly speed up the computation. What happens if z(i)  depends on a previous value, as in the following: do i = 2,n    z(i) = z(i-1)*2 enddo
13%
Develop your own scripts for Nmap
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © Raman Maisei, 123RF.com
something like Listing 2. Listing 2 Sample Output Starting Nmap 6.47 (http://nmap.org) at 2015-03-12:00:00 CET Nmap scan report for targethost (192.168.1.100) Host is up (0.023s latency). r
13%
Registry for Docker images
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Lead Image © Viktoriya Malova, 123RF.com
/docker-registry $ htpasswd -Bbn oliver T0Ps3crEt | sudo tee /etc/docker-registry/htpasswd oliver:$2y$05$lAmkjHRcR0.TK52/rHR/Pe86AGZqpRleXenHVT/eabFe8He5UZiPu $ docker run -p 5000:5000 --name registry -v /etc
13%
Moving HPC to the cloud
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Zarko Cvijovic, 123RF.com
will provide sub-par performance. A deeper treatment of these issues can be found in a recent article called "Will HPC Work in the Cloud?" [3]. Finally, any remote computation scheme needs to address
13%
How to configure and use jailed processes in FreeBSD
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© Corina Rosu, 123RF.com
/sbin/named ... 774 ?? SsJ 0:00,12 /usr/sbin/sshd ... 781 ?? IsJ 0:00,87 /usr/sbin/cron -s ... The jls command lets you view all the currently active jails, as shown in Listing 6. Listing 6 Active Jails

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