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68%
A closer look at hard drives
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
Lucy Baldwin, 123RF
: XXXXXXXXXXXXXXXXXX 6 Firmware Revision: 2CV102HD 7 Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6 8 Standards: 9 Used: ATA/ATAPI-7 T13 1532
68%
SHA-3 – The new hash standard
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© Warakorn Harnprasop, 133RF.com
Schneier's blog entry: http://www.schneier.com/blog/archives/2012/09/sha-3_will_be_a.html Talk at 25C3 about spoofed MD5 signatures: http://media.ccc.de/browse/congress/2008/25c3-3023-en ... NIST has chosen the Keccak algorithm as the new cryptographic hash standard but, in real life, many users are still waiting to move to its predecessor SHA-2. ... SHA-3 ... SHA-3 – The new hash standard
68%
The weak spot of SBCs
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Lead Image © Lucy Baldwin, 123RF.com
(a SanDisk C10, U1, A1 microSDHC I with 16GB of capacity) shows the card handily exceeding its specified minimum limits (Figure 3). Testing demonstrated approximately 45MBps of throughput with a read
68%
Performance Health Check
13.06.2022
Home »  HPC  »  Articles  » 
Many HPC systems check the state of a node b efore  running a n  application, but not very many check that the performance of the node is acceptable before running the job. ... made to the benchmarks of the latest version 3.4.2 of the NPB are: added class F to the existing S, W, A, B, C, D, E added dynamic memory allocation added MPI and OpenMP programming models ... Many HPC systems check the state of a node b efore  running a n  application, but not very many check that the performance of the node is acceptable before running the job.
68%
Saving Storage Space with Reduced Precision
19.06.2023
Home »  HPC  »  Articles  » 
object O Python object A simple example from nkmk creates a float64  data type (64-bit floating-point number): import numpy as np a = np.array([1, 2, 3], dtype=np.float64
68%
Comparing 5 to 50TB NAS storage boxes
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Franck Boston, fotolia.com
(3 or 6Gbps) with up to 4TB capacity. Typically, you can deploy 2.5- or 3.5-inch formats; of the devices we tested, only Buffalo and Netgear did not bother providing drill holes for smaller disks
68%
Netcat – The Admin’s Best Friend
20.08.2012
Home »  Articles  » 
 
examplehost.tld 22 If firewalling is in place and you need to originate your connection from a specific IP address to open a port, entering # nc -s 1.2.3.4 examplehost.tld 8181 will connect to examplhost
68%
Netcat – The admin's best friend
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Dmitry Rukhlenko, 123RF.com
seconds, for example: # nc -p 16000 -w 30 examplehost.tld 22 If firewalling is in place and you need to originate your connection from a specific IP address to open a port, then you can enter: # nc -s 1.2.3
68%
High-performance Python – compiled code and C interface
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Lead Image © Konrad Bak, 123RF.com
source JIT compiler that translates a subset of Python and NumPy [2] code into fast machine code at run time; hence, the "JIT" designation. Numba uses the LLVM [3] compiler library for ultimately compiling ... High-performance Python – compiled code and C interface
68%
Why Good Applications Don't Scale
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © man64, 123RF.com
. 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

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