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27%
Visualizing time series data
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © Maxim Kazmin, 123RF.com
_port = 2003; 10 11 # create Socket 12 my $socket = IO::Socket::INET -> new(PeerAddr => $remote_host, 13 PeerPort => $remote_port, 14 Proto => "tcp", 15 Type => SOCK_STREAM) 16 or die "Couldn
27%
Migrating CentOS to Rocky Linux with migrate2rocky
06.10.2022
Home »  Archive  »  2022  »  Issue 71: Kuber...  » 
Photo by Ray Hennessy on Unsplash
corresponds to RHEL 8 (with 4.x kernels), of which multiple minor versions have been released since. Rocky Linux 8.4 appeared over a month after RHEL 8.4, whereas 8.5 and 8.6 were released less than a week
27%
Network backup with Burp, Obnam, and Backshift
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Sergey Peterman, 123RF.com
version (1.3.0) dates back to January of this year, whereas the current version (1.3.6) was released at the end of May. The associated Windows client is available in the form of an installer file for 32
27%
Programming with OpenMP
07.11.2011
Home »  HPC  »  Articles  » 
     #pragma omp parallel for shared (sum) private (i) 12     for ( i=0; i < 1000000; i++) { 13         #pragma omp critical (sum_total) 14         sum = sum + a[i]; 15     } 16     printf("sum=%lf\n",sum); 17
27%
Baselines are more important than  the  benchmark
06.10.2022
Home »  Archive  »  2022  »  Issue 71: Kuber...  » 
Lead Image © Lucy Baldwin, 123RF.com
, as opposed to what theory predicts. The OpenSSL project incorporates two useful benchmarks: openssl speed [6], which tests cryptographic performance in abstract on the local machine without any network access
27%
Managing Storage with LVM
07.11.2023
Home »  HPC  »  Articles  » 
                5.3M  8.2k  5.3M   1% /run/lock /dev/nvme1n1p1       1.1T  488G  468G  52% /home /dev/nvme0n1p1       536M  6.4M  530M   2% /boot/efi /dev/sda1            6.0T  3.4T  2.4T  60% /home2 tmpfs
27%
File Compression for HPC
10.11.2021
Home »  HPC  »  Articles  » 
. As the level of compression increases, the amount of time to perform the compression increases and the amount of memory used increases. Compress level -6 is the default and is a reasonable trade-off between
27%
Using the Expect scripting environment
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Ivan Mikhaylov, 123RF.com
is also the Expect timeout period). Listing 6 loop (Part 1) 01 #!/usr/bin/expect 02 03 set cmd [lindex $argv 0] 04 if {"$cmd" == ""} { 05 send "Usage: loop command \[refresh\]\n" 06
27%
Real-World HPC: Setting Up an HPC Cluster
04.11.2011
Home »  HPC  »  Articles  » 
on enterprise-grade rack hardware, there is no reason one cannot follow along at home with a few beige boxes and an 10Mb hub, as long as the servers are capable of booting from the network with PXE [6]. PXE
27%
Warewulf 4 – Time and Resource Management
17.01.2023
Home »  HPC  »  Articles  » 
is working, boot the compute node and run timedatectl : $ ssh n0001 [laytonjb@n0001 ~]$ timedatectl                Local time: Sat 2022-12-17 11:31:26 EST            Universal time: Sat 2022-12

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