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19%
OpenLDAP Workshop
11.06.2014
Home »  Archive  »  2014  »  Issue 21: Manag...  » 
Lead Image © tiero, 123RF.com
directory and link with the required certificate hash: $ sudo certutil -L -d /etc/openldap/certs -n "OpenLDAP Server" -a > /etc/pki/tls/certs/ldap.acme-services.org.crt $ sudo ln -sf /etc
19%
Port Knocking
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © rasslava, 123RF.com
seq_timeout = 10 08 tcpflags = syn 09 command = /usr/sbin/iptables -A INPUT -s \ %IP% -p tcp --dport 22 -j ACCEPT 10 11 [closeSSH] 12 sequence = 9000
19%
Infrastructure as Code with Terraform
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Lead Image © Sebastian Duda, 123RF.com
uses different providers [2] to provide resources for the corresponding platforms, which in turn feed into the configurations. In this article, I use DigitalOcean [3] to provide insight into how
19%
Gathering Data on Environment Modules
10.09.2012
Home »  HPC  »  Articles  » 
to logfiles, and it’s pretty simple to use: [laytonjb@test1 ~]$ logger "This is a test" ... [root@test1 ~]# tail -n 2 /var/log/messages Aug 22 15:54:47 test1 avahi-daemon[1398]: Invalid query packet. Aug 22 17
19%
Profiling application resource usage
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© fauxware, fotolia.com
(Accelerated Processing Unit) [4]. This processor combines a CPU with a GPU on a single chip. For example, the recently announced AMD A10-5800K has the following specifications: 4 cores at 3.8GHz (turbo
19%
Moving your data – It's not always pretty
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
digifuture, 123RF
://blog.ciberterminal.net/2012/10/16/parallel-rsyncing-a-huge-directory-tree/ Parallelizing RSYNC Processes: http://sun3.org/archives/280 Parallelizing rsync: http://superuser.com/questions/353383/parallelizing-rsync Bit
19%
Monitoring Storage with iostat
25.02.2013
Home »  HPC  »  Articles  » 
.00 0.00 01/31/2013 09:56:03 AM avg-cpu: %user %nice %system %iowait %steal %idle 6.00 0.00 2.00 0.50 0.00 91.50 Device: rrqm/s wrqm/s r/s w/s rMB
19%
Finding and recording memory errors
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © lightwise, 123RF.com
should cause a machine check exception (MCE) [3], which should crash the system. The bad data in memory could be related to an application or to instructions in an application or the operating system
19%
mpi4py – High-Performance Distributed Python
12.11.2020
Home »  HPC  »  Articles  » 
("Rank %d Message Received, data is: "%rank, data) # end if Listing 6: Point-to-Point Output output: Rank 0 data is:  [0 1 2 3 4 5 6 7 8 9] Rank 1 Message Received, data is:  [0 1 2 3 4] Rank 2 Message Received, data is:  [5 6 7 8 9] More Complex
19%
A Brief History of Supercomputers
21.01.2021
Home »  HPC  »  Articles  » 
This first article of a series looks at the forces that have driven desktop supercomputing, beginning with the history of PC and supercomputing processors through the 1990s into the early 2000s. ... 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 ... This first article of a series looks at the forces that have driven desktop supercomputing, beginning with the history of PC and supercomputing processors through the 1990s into the early 2000s.

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