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42%
Prepare, analyze, and visualize data with R
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © Buchachon Petthanya, 123RF.com
: > numbers <- c(1, 2, 3, 4, 5) The c() function – the c stands for "concatenate" – combines the individual elements listed in parentheses. An equals sign can be used as an alternative for assignments, in line
42%
Secure SSH connections the right way
28.11.2021
Home »  Archive  »  2021  »  Issue 66: Inci...  » 
Lead Image © Olivier Le Moal, 123RF.com
4fc2c67 server.example.com IN SSHFP 3 2 fbfb8965a367f71e4ed8f6737a2e2db1c04be671db7c9c4e17ac346b9ae7a825 With the SSH option VerifyHostKeyDNS=yes set, SSH clients compare the supplied
42%
NVDIMM and the Linux kernel
11.10.2016
Home »  Archive  »  2016  »  Issue 35: Persi...  » 
Lead Image © Denis Dryashkin, 123RF.com
: [mem 0x0000000500000000-0x0000000c7fffffff] usable Speed Test If you own NVDIMMs and want to check out the speed advantage, all you need is a short test with the Unix dd tool. In Listing 3, root
42%
Measuring the performance health of system nodes
02.08.2022
Home »  Archive  »  2022  »  Issue 70: Defen...  » 
Lead Image © Peter Hermes Furian, 123RF.com
. The primary changes made to the benchmarks of the latest version 3.4.2 of the NPB are: added class F to the existing S, W, A, B, C, D, E added dynamic memory allocation added MPI and Open
42%
NVDIMM Persistent Memory
22.09.2016
Home »  HPC  »  Articles  » 
-0x0000000c7fffffff] usable Speed Test If you own NVDIMMs and want to check out the speed advantage, all you need is a short test with the Unix dd tool. In Listing 3, root copies 4GB from the null
42%
Monitoring Memory Errors
17.09.2013
Home »  Articles  » 
 
of an uncorrectable error by factors of 9–400. Uncorrectable errors following a correctable error are still small at 0.1%–2.3% per year. The incidence of correctable errors increases with age
42%
HPC Server Revenue at All-Time High
21.12.2012
Home »  HPC  »  News  » 
 
.1 billion. In the third quarter of 2012, the high-end supercomputers sector of the market accounted for 62.4% of worldwide HPC technical server revenue. In Q3 2012, IBM and HP were the worldwide market ... IBM, HP, and Fujitsu rank 1, 2, and 3, respectively, as market leaders of worldwide revenue share.
42%
Aggregating information with Huginn
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Lead Image © it Ilka Burckhardt, Fotolia.com
.e., in this example). If the MySQL version you are using is version 5.5.3 or newer, then replace utf8 with utf8mb4: DATABASE_ENCODING=utf8mb4 The results should look like Figure 1. At the bottom
42%
A script for strict packet filter updates
05.12.2016
Home »  Archive  »  2016  »  Issue 36: Autom...  » 
Lead Image © french 03, photocase.com
'^$' | sort -n | uniq -c | awk '$1 >= '${BLOCK_PREFIX_THRESHOLD}' {print $2" "$3}'` 174 175 # echo "${PREFIXES}" 176 for P in $( echo "${PREFIXES}" | awk '{print $2}' ); do 177 DEL_IPS=`echo "${QUERY
42%
Performance Health Check
13.06.2022
Home »  HPC  »  Articles  » 
Many HPC systems check the state of a node b efore  running a n  application, but not very many check that the performance of the node is acceptable before running the job. ... made to the benchmarks of the latest version 3.4.2 of the NPB are: added class F to the existing S, W, A, B, C, D, E added dynamic memory allocation added MPI and OpenMP programming models ... Many HPC systems check the state of a node b efore  running a n  application, but not very many check that the performance of the node is acceptable before running the job.

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