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20%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
for Nmap (using man nmap ) to retrieve a sample of the output it produces. # nmap -A -T4 scanme.nmap.org            Starting Nmap ( http://nmap.org )            Interesting ports on scanme.nmap.org (64.13.134.52
20%
Testing the Samsung MU-PA500B 500GB SSD
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Lead Image © Lucy Baldwin, 123RF.com
of their internal 2.5-inch SATA devices, coming in at a mere 2.3x3x0.5 inches (5.8x7.6x1.3 cm) – smaller than a Post-it note (Figure 1). Available in sizes ranging from 256GB to 2TB, the specimen in our lab is the MU
20%
Spanning Tree Protocol
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Connection Costs Bandwidth Costs 10 Mbps 100 16 Mbps  62 100 Mbps  19 200 Mbps  12 622 Mbps  6 1 Gbps  4
20%
Unleashing Accelerated Speeds with RAM Drives
02.08.2021
Home »  Archive  »  2021  »  Issue 64: Bare...  » 
Lead Image © Vladimir Nenov, 123RF.com
is up to an impressive 1.2GBps. Listing 6 HDD Random Read $ sudo fio --bs=4k --ioengine=libaio --iodepth=32 --size=500m --direct=1 --runtime=60 --filename=/dev/sdf --rw=randread --numjobs=1
20%
DDoS protection in the cloud
15.08.2016
Home »  Archive  »  2016  »  Issue 34: Softw...  » 
Lead Image © Amy Walters, 123RF.com
, such attacks can reach bandwidths of 300GBps or more. Admins usually defend themselves by securing the external borders of their own networks and listening for unusual traffic signatures on the gateways
20%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
-enabled as the first statement of the setup parameter with gc.enable(). Heisenberg's Law Heisenberg's law of profiling [6] holds that measuring a computing system alters it. How am I altering the system
20%
Tech News
26.01.2025
Home »  Archive  »  2025  »  Issue 85: Monit...  » 
 
/resources-tools/resources/enhanced-visibility-and-hardening-guidance-communications-infrastructure. OpenMP 6.0 Released The OpenMP Architecture Review Board (ARB) has released version 6.0 of the OpenMP API ... In the news: Hetzner Announces S3-Compatible Object Storage; Ongoing Cyberattack Prompts New CISA Guidance for Communications Infrastructure; OpenMP 6.0 Released; Open Source Development Improves
20%
I/O Profiling at the Block Level
27.08.2014
Home »  HPC  »  Articles  » 
-1600) CentOS 6.5 (updates current as of August 22, 2014) For testing, I used a Samsung SSD 840 Series drive that has 120GB of raw capacity (unformatted) and is connected via a SATA 3 (6Gbps) connection
20%
The best performance yet
26.01.2025
Home »  Archive  »  2025  »  Issue 85: Monit...  » 
Lead Image © Lucy Baldwin, 123RF.com
Recently, I analyzed the performance of new storage options on Raspberry Pi 5 boards [1], focusing on the Pi 5's USB bus improvements (the USB 3 ports are now independently capable of 5Gbps each
20%
Lmod – Alternative Environment Modules
30.01.2013
Home »  HPC  »  Articles  » 
, for a library that uses a specific compiler and MPI library, you would end up with a module names like atlas-3.10.0-opempi-1.6.2-open64-5.0 . The name is useful because it tells the user the library version

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