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49%
Why Good Applications Don’t Scale
13.10.2020
Home »  HPC  »  Articles  » 
You ha ve parallelized your serial application ,  but as you use more cores you are  n o t seeing any improvement  in performance . What gives? ... .2. Assigning the base serial portion s B = 0.195, independent of n , leaves the communication portion s C = 0.005. Figure 2 shows the plot of speedup a as a function of the number of processors ... You  ha ve parallelized your serial application ,  but as you use more cores you are  n o t seeing any improvement  in performance . What gives?
49%
File Compression for HPC
10.11.2021
Home »  HPC  »  Articles  » 
a directory -v or -vv  creates verbose output -b uses bzip2 compression -g uses gzip compression -l uses lzo compression -L n uses compression level n (1 -9 , with 7 being the default
49%
Why Good Applications Don't Scale
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © man64, 123RF.com
.2. Assigning the base serial portion s B = 0.195, independent of n , leaves the communication portion s C = 0.005. Figure 2 shows the plot of speedup a as a function of the number of processors
49%
StarCluster Toolkit: Virtualization Meets HPC
16.01.2013
Home »  HPC  »  Articles  » 
-east-1d Keypair: foocluster EBS volumes:     vol-4c048437 on master:/dev/sda (status: attached)     vol-4f048434 on node001:/dev/sda (status: attached) Cluster nodes:     master running i-6a10c710 ec2
49%
Ubuntu 16.04 LTS as an ownCloud server
13.02.2017
Home »  Archive  »  2017  »  Issue 37: Distr...  » 
Lead Image © Dmitriy Shironosov, 123RF.com
://download.owncloud.org/download/repositories/stable/xUbuntu_16.04/Release.key -O -| sudo apt-key add -sh -c "echo 'deb http://download.owncloud.org/download/repositories/9.0/xUbuntu_16.04/ /' > /etc/apt/sources.list.d/owncloud.list" Once the installation ... Locally hosted collaboration servers are an alternative to letting employees swap files in a public cloud. We show you how to set up an ownCloud 9 environment on Ubuntu 16.04 LTS.
49%
Uncovering SQL Injections
18.03.2013
Home »  Articles  » 
 
.0.0.1/dvwa/ vulnerabilities/sqli/?id=1&Submit=Submit#" --cookie="PHPSESSID=ce0aa7922720f3190bf9bbff7f24c434;security=low" --forms After a short while, SQLmap finds the matching ID field and asks whether you
49%
We compare four popular NAS appliances
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Alejandro Mendoza, 123RF.com
  Model TS-251 DS-214 N5550 ReadyNAS RN31400 Manufacturer QNAP Inc. Synology Thecus Netgear Operating System QTS 4.1.1 (Linux 3
49%
ZAP provides automated security tests in continuous integration pipelines
23.08.2017
Home »  Archive  »  2017  »  Issue 41: Kuber...  » 
Lead Image © Galina Peshkova, 123RF.com
03736 bash zap@03736c2a2088:/zap$ x11vnc --forever --usepw --create Enter VNC password: Verify password: Write password to /home/zap//.vnc/passwd? [y]/n y Password written to: /home
49%
History and use of the mail utility
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Vlad Kochelaevskiy, fotolia.com
the way back to well before Sinclair C5s were the rage – 1971 or so – an early edition of Unix incorporated a command called mail. So nascent was this embryonic operating system that it couldn't speak
49%
Julia: Fast as Fortran, easy as Python
09.04.2019
Home »  Archive  »  2019  »  Issue 50: Bpfilter  » 
Lead Image © Andrey Suslov, 123RF.com
, to avoid the "integer division pitfall." Table 1 Integer Division       Result Operation Fortran C Python 2 Python 3 Julia Java

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