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20%
Monitoring network computers with the Icinga Nagios fork
17.06.2011
Home »  Archive  »  2010  »  Issue 1: System...  » 
 
powerful Icinga test server (Via C3, 800MHz, 256MB RAM). As a default, you need a new username and password for Icinga Web. That said, however, the current status does reveal some potential; it makes sense
20%
Prepare, analyze, and visualize data with R
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © Buchachon Petthanya, 123RF.com
) Call: lm(formula = Sessions ~ wday + month, data = datPrep[datPrep$isTrainData, ]) Residuals: Min 1Q Median 3Q Max -464.80 -61.88 -6.52 62.38 479.19 Coefficients
20%
A Brief History of Supercomputers
21.01.2021
Home »  HPC  »  Articles  » 
May 1988 AMD K6-2 MMX and 3DNOW! SIMD, 200–570MHz; 64KiB L1 cache Jun 1998 Pentium II Xeon SIMD; L2 cache from 512KB to 2MB Feb 1999 Pentium III 9
20%
Resource Management with Slurm
05.11.2018
Home »  HPC  »  Articles  » 
nodes, and make sure to do this as a user and not as root. 3. To make life easier, use shared storage between the controller and the compute nodes. 4. Make sure the UIDs and GIDs are consistent
20%
Resource Management with Slurm
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image © Vladislav Kochelaevs, fotolia.com
In previous articles, I examined some fundamental tools for HPC systems, including pdsh [1] (parallel shells), Lmod environment modules [2], and shared storage with NFS and SSHFS [3]. One remaining
20%
Assess USB performance while exploring storage caching
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image © Lucy Baldwin, 123RF.com
(USB 2), and a Samsung Fit Plus 32 (USB 3). Disk Caches The OS is not the only player in the caching business. Examining a Samsung 750 SATA SSD drive, you cannot but notice a 256MB RAM buffer [8
20%
VM and cloud management with openQRM
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © Jason Murillo, 123RF.com
; it automatically backs up all of the configuration files and the database content with a single command: /usr/share/openqrm/bin/openqrm state backup -n 5.2.before-update The following command lists all backups
20%
Listing 6
21.08.2012
Home »  HPC  »  Articles  »  Warewulf 4 Code  » 
 
Listing 6: Torque Job Script [laytonjb@test1 TEST]$ more pbs-test_001 1  #!/bin/bash 2  ### 3  ### Sample script for running MPI example for computing PI (Fortran 90 code) 4  ### 5  ### Jeff Layton ... Listing 6 for Warewulf Part 4 ... Listing 6 ... Listing 6: Warewulf – Part 4
20%
Memory Errors
23.03.2016
Home »  HPC  »  Articles  » 
_scrub_rate     0 ue_count 0 csrow0           0 csrow3  0 csrow6  0 mc_name  0 seconds_since_reset  0 ue_noinfo_count In the /sys filesystem, for each csrow, a number of entries contain a lot of information
20%
Process, Network, and Disk Metrics
26.02.2014
Home »  HPC  »  Articles  » 
output from my desktop computer. Listing 6: Parsed iostat Output [laytonjb@home4 3]$ ./3test1.py sda :    Read reqs merged:            0.07/s     Read reqs completed:             2.34/s    Write

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