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9%
Symbolic Mathematics with Python's SymPy Library
17.10.2018
Home »  HPC  »  Articles  » 
and simplifying expressions; functions for symbolically solving equations and ordinary and partial differential equations; two- and three-dimensional (2D and 3D) plotting, and much more (e.g., see the
9%
I/O Profiling at the Block Level
27.08.2014
Home »  HPC  »  Articles  » 
. If you’re not running a kernel before 2.6.16, then these tools should be on your system. On my CentOS 6.5 system, I found them in an RPM named blktrace . These are very powerful tools, but they can
9%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
.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            53/tcp  open   domain  ISC BIND 9
9%
Detect failures and ensure high availability
22.05.2023
Home »  Archive  »  2023  »  Issue 75: Teamwork  » 
Photo by Tim Foster on Unsplash
't need to stay idle. If configured accordingly, resources and services can be balanced across all nodes within the cluster. For instance, Node 1 can host Resource 1, while Node 2 hosts Resource 2. If Node
9%
IT automation with SaltStack
30.05.2021
Home »  Archive  »  2021  »  Issue 63: Autom...  » 
Photo by Harry Cunningham on Unsplash
the command: # salt -C "G@os:Debian and G@num_cpus:2 and G@cpuarch:x86_64 and G@mem_total:4096 and E@minion\d{2,}" logrotate.show_conf The information provided by the minions is referred to as grains in Salt
9%
Lmod – Alternative Environment Modules
30.01.2013
Home »  HPC  »  Articles  » 
, for a library that uses a specific compiler and MPI library, you would end up with a module names like atlas-3.10.0-opempi-1.6.2-open64-5.0 . The name is useful because it tells the user the library version
9%
Better monitoring for websites and certificates
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
Lead Image © amasterpics123, 123RF.com
on the check_http tool that originated in the Nagios universe. However, this reliable little helper is now showing its age. With check_httpv2 [1], Checkmk now offers a new open source implementation for modern
9%
Cross-Vendor IPsec
25.10.2011
Home »  Articles  » 
 
randomly with each session; the first RFC relating to IKE dates back to 1998, and the current version IKEv2 is detailed by RFC 5996. Various features were added to IKE through the years to support
9%
Rethinking RAID (on Linux)
16.03.2021
Home »  HPC  »  Articles  » 
identified the following physical drives that I will be using in my examples: $ cat /proc/partitions |grep -e sd[c,d] -e nvm  259        0  244198584 nvme0n1  259        2  244197543 nvme0n1p1    8       32
9%
An army of Xeon cores to do your bidding
30.01.2024
Home »  Archive  »  2024  »  Issue 79: Monit...  » 
Lead Image © Lucy Baldwin, 123RF.com
a refurbished Dell Precision T7190 workstation [2] on eBay in nearly perfect cosmetic condition with a motherboard sporting two LGA 2011-3 processor sockets – which were both vacant (Figure  1). The stock power

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