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Getting started with the Apache Cassandra database

06.10.2019

Home » Archive » 2019 » Issue 53: Secur... »

of the data. For data retrieved from all geographic regions (e.g., photos of celebrities) a separate partition is available everywhere that reduced cross-partition traffic by 20 percent, saving a large amount

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Haskell framework for the web

22.12.2017

Home » Archive » 2017 » Issue 42: Secur... »

. Listing 2 Setting Up the MySQL DB mysql -u root -h localhost -p mysql> CREATE DATABASE ; mysql> CREATE USER ''@'' IDENTIFIED BY ''; mysql> GRANT ALL PRIVILEGES

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FreeBSD Version 10 released

20.03.2014

Home » Archive » 2014 » Issue 19: Perim... »

For 20 years, FreeBSD [1] has been an efficient, secure, and stable open source operating system. Now version 10 has been released with some innovations. FreeBSD is part of the Unix family

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Designing a secure Active Directory

26.03.2025

Home » Archive » 2025 » Issue 86: Data... »

and understand how these have changed for both organizations and end users over the past 20 years. In the late 1990s, when Microsoft designed Active Directory, all office workstations were hardwired and often had

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Environment Modules

23.02.2012

Home » HPC » Articles »

/64/4.3.0 globalarrays/open64/openmpi/64/4.2 mvapich2/gcc/64/1.2 acml/open64-int64/64/4.3.0 hdf5/1.6.9 mvapich2/open64/64/1.2 blacs/openmpi/gcc/64/1.1patch03 hpl/2.0

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Distributed storage with Sheepdog

07.10.2014

Home » Archive » 2014 » Issue 23: 10 Ti... »

Sheepdog Server in Action # ps -ef|egrep '([c]orosyn|[s]heep)' root 491 1 0 13:04 ? 00:00:30 corosync root 581 1 0 1:13 PM ? 00:00:03 sheep -p 7000 /var

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A ptrace-based tracing mechanism for syscalls

06.10.2022

Home » Archive » 2022 » Issue 71: Kuber... »

call the POSIX function open64. The same behavior could be observed in a debugger. A closer look at the function call in the stack trace of the debugger showed the root cause: The function call wasn

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Managing access credentials

02.02.2021

Home » Archive » 2021 » Issue 61: Secur... »

Lead Image © Marcel Goldbach, photocase.com

a dialog where you can select an algorithm to encrypt your data. AES 256-bit is used by default, but you can switch to the Twofish or ChaCha20 algorithms, which also rely on 256-bit keys. If you have

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Moving your data – It's not always pretty

18.07.2013

Home » Archive » 2013 » Issue 15: What’... »

to take advantage of the number of cores is to run multiple cp commands at the same time, either on specific files or specific subtrees (start at the lowest branch and work upward to root). This isn't too

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Darshan I/O Analysis for Deep Learning Frameworks

18.08.2021

Home » HPC » Articles »

20.04 system. I had to install some packages for the postprocessing (darshan-util ) tools to work: texlive-latex-extralibpod-latex-perl Different distributions may require different packages. If you

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