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24%
Distributed denial of service attacks from and against the cloud
14.11.2013
Home »  Archive  »  2013  »  Issue 17: Cloud...  » 
Lead Image © leksustuss, 123RF.com
, the DDoS attack on Spamhaus was triggered by 36-byte data packets, each of which triggered a 3,000-byte response. Although a normal desktop PC can handle about 1,000 DNS requests per second, a single DNS
24%
Extending OpenNebula with hooks
09.01.2013
Home »  Archive  »  2013  »  Issue 18: New W...  » 
Lead Image © Greg Epperson, Photocase.com
of virtual machines, and industrial customers include Telefonica and Akamai. The main developer from C12G Labs offers commercial support and is currently establishing an international network of partners [6
24%
Dispatches from the world of IT
16.05.2013
Home »  Archive  »  2013  »  Issue 14: Samba 4  » 
 
sell for US$ 500,000 and up, increased 29.3% to US$ 5.6 billion from 2011, according to IDC's recent "Worldwide High-Performance Technical Server QView" report. According to the report, supercomputers
23%
Setting up FreeNAS
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © Franck, 123RF.com
. FreeNAS does require some hardware planning, but it is well documented. Because the system is based on FreeBSD 9.3 [6], you can find lots of details on the FreeBSD Hardware Compatibility List [7]. If you
23%
Selecting compilers for a supercomputer
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Lead Image Photo by Michal Kmet on Unsplash
with approximately 8,200 cores each, and six newer islands with 14,300 cores each. It achieves a speed of around 6 petaFLOPS (10^15 floating-point operations per second). In total, almost 500TB of main memory
23%
Kafka: Scaling producers and consumers
25.03.2021
Home »  Archive  »  2021  »  Issue 62: Lean...  » 
Photo by Patrick Schneider on Unsplash
are generally pretty cheap – go you!). That means you could easily be mirroring 1000+ partitions into your central Kafka for each edge cluster. Figure 1: The data
23%
Linux Software RAID
10.12.2023
Home »  HPC  »  Articles  » 
is reasonable because you can write to (N – 1) devices as you would RAID 0 (e.g., write a stripe of data). RAID 6 Somewhat similar to RAID 5, two copies of the parity are written to two storage devices
23%
SDS configuration and performance
13.02.2017
Home »  Archive  »  2017  »  Issue 37: Distr...  » 
Lead Image © Jakub Jirsak, 123RF.com
-performance requirements, although it is not uncommon in smaller companies. The setup also allowed the candidates to test on equal terms. Version 1.97 of Bonnie++ [5] and IOzone 3.429 [6] were the test tools. To begin, I
23%
CloudStack's Chip Childers
29.10.2013
Home »  Articles  » 
 
, but with Apache CloudMonkey 5.0.0, the CLI can actually query the API endpoint of the target cloud and automatically discover the capabilities of that environment. Apache CloudStack 4.2 and will be out by the time
23%
Moore's Law Continues its Unwavering March
09.10.2013
Home »  HPC  »  Articles  » 
, and the Gigabit Ethernet interface onboard promises tantalizing cluster possibilities – the team has already demonstrated a 756-core cluster, powering 42 boards with less than 500 watts. As Adapteva perfects its 64

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