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31%
NVDIMM Persistent Memory
22.09.2016
Home »  HPC  »  Articles  » 
662fff] ACPI NVS [    0.000000] BIOS-e820: [mem 0x000000007b663000-0x000000007b7d2fff] ACPI data [    0.000000] BIOS-e820: [mem 0x000000007b7d3000-0x000000007b7fffff] usable [    0.000000] BIOS-e820
31%
Understanding Layer 2 switch port security
22.12.2017
Home »  Archive  »  2017  »  Issue 42: Secur...  » 
Lead Image © Taffi, Fotolia.com
) win 512 9a:d7:d9:6a:fd:ee 9b:e8:7:15:e4:1d 0.0.0.0.44381 > 0.0.0.0.7072: S 352131538:352131538(0) win 512 42:33:77:69:9b:65 ef:3b:4c:19:e2:bd 0.0.0.0.24920 > 0.0.0.0.19837: S 1039619585:1039619585(0 ... Understanding Layer 2 switch port security
31%
Improving performance with environment variables
02.08.2021
Home »  Archive  »  2021  »  Issue 64: Bare...  » 
Lead Image © sgame, fotolia.com
SGEMM for N = [2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192] A = single( rand(N,N) ); B = single( rand(N,N) ); start = clock(); C = A*B; elapsedTime = etime(clock(), start
31%
Error-correcting code memory keeps single-bit errors at bay
14.11.2013
Home »  Archive  »  2013  »  Issue 17: Cloud...  » 
Lead Image © Igor Stevanovic, 123RF.com
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
31%
Monitoring Performance with sar
05.03.2014
Home »  Articles  » 
 3.5.0-44-generic (hercules)         03.12.2013      _x86_64_        (2 CPU)    09:46:03      runq-sz  plist-sz   ldavg-1   ldavg-5  ldavg-15   blocked 09:46:13            1       468      0.02      0.06      0.14         0
31%
Collecting and evaluating performance data over a period of time
20.03.2014
Home »  Archive  »  2014  »  Issue 19: Perim...  » 
Lead Image © Sergey Nivens, 123RF.com
) w Task creation and task-switching activity y TTY activities Listing 1 Query with Interval and Number jcb@hercules:# sar -q 10 2 Linux 3.5.0-44-generic
31%
Finding and recording memory errors
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © lightwise, 123RF.com
_noinfo_count 0 csrow2 0 csrow5 0 device 0 sdram_scrub_rate 0 ue_count 0 csrow0 0 csrow3 0 csrow6 0 mc_name 0 seconds_since_reset 0 ue_noinfo_count A number of entries in the /sys
31%
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
31%
Listing 2
01.08.2012
Home »  HPC  »  Articles  »  Warewulf Cluste...  »  Warewulf 3 Code  » 
 
86_64                    1.8.8-3.1.el6                       sl                             308 k  fontconfig                       x86_64                    2.8.0-3.el6                         sl ... Warewulf 3 Listing 2 ... Listing 2
31%
A Password Protection Service
05.12.2019
Home »  Archive  »  2019  »  Issue 54: NVMe...  » 
Lead Image © bluebay, 123RF.com
, as in Listing 2. Listing 2 Output Including Banned IP Address $ sudo iptables -L -n Chain INPUT (policy ACCEPT) target prot opt source destination f2b-default tcp -- 0.0.0.0/0 0.0.0.0/0 ... Fail2ban is a quick to deploy, easy to set up, and free to use intrusion prevention service that protects your systems from brute force and dictionary attacks. ... Fail2ban ... Fail2ban

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