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18%
Secure email communication
03.02.2022
Home »  Archive  »  2022  »  Issue 67: syst...  » 
Photo by Simon Moog on Unsplash
authorized outbound mail servers. Although designed in 2004, SPF only became the standard recommended by the Internet Engineering Task Force (IETF) in 2014 [2]. From a sample of more than 3,000 domains
18%
Lustre HPC distributed filesystem
07.04.2022
Home »  Archive  »  2022  »  Issue 68: Autom...  » 
Photo by Efe Kurnaz on Unsplash
to which they are written. Lustre (or Linux Cluster) [1]-[3] is one such distributed filesystem, usually deployed for large-scale cluster high-performance computing (HPC). Licensed under the GNU General
18%
mpi4py – high-performance distributed Python
30.11.2020
Home »  Archive  »  2020  »  Issue 60: Secur...  » 
Lead Image © liu liming, 123RF.com
. MPI for Python (mpi4py ) [1] was developed for Python with the C++ bindings in the MPI-2 standard. The 1.0 release was on March 20, 2020, and the current release as of this writing is 3.0.3 (July 27
18%
Failure to Scale
03.07.2013
Home »  HPC  »  Articles  » 
). For one process, the wall clock time is assumed to be 1,000 seconds. This means that 200 seconds of the wall clock time is the serial portion of the application. Also, vary the number of processes from 1
18%
Google+ with Business
02.09.2011
Home »  Articles  » 
 
’Reilly, who is also a Twitter user, says that, despite having approximately 55,800 followers on Google+ compared with more than 1,489,000 Twitter followers, he notices more comments and feedback on his Google
18%
Pymp – OpenMP-like Python Programming
15.04.2020
Home »  HPC  »  Articles  » 
To illustrate how to code with Pymp, the sample code in Listing 2 from the website begins with basic Python code. To keep things simple, this is a serial code with a single array. Listing 3 is the Pymp version
18%
How Linux and Beowulf Drove Desktop Supercomputing
17.02.2021
Home »  HPC  »  Articles  » 
with some of the most common licenses, such as the Apache License, BSD 3-Clause License, GNU Public License (GPL, which includes the “copyleft” license, the opposite of a copyright), GNU Lesser General Public
18%
Network access control with Cisco's Identity Services Engine
07.04.2022
Home »  Archive  »  2022  »  Issue 68: Autom...  » 
Photo by Keith Hardy on Unsplash
(ADE-OS). The current version 3.1 is a Red Hat Enterprise Linux version 8.2. Full root access is reserved for the manufacturer's Technical Assist Center. Some services are run as microservices in Docker
18%
Hybrid public/private cloud
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Photo by JJ Ying on Unsplash
Companies often do not exclusively use public cloud services such as Amazon Web Services (AWS) [1], Microsoft Azure [2], or Google Cloud [3]. Instead, they rely on a mix, known as a hybrid cloud
18%
Remotely controllingvirtual machines with virsh
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
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is required in some cases – on openSUSE 11.3, you would issue the rclibvirtd start command, for example. After doing this, virsh version should output the version numbers of the components involved

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