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08.07.2018

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The pdsh parallel shell tool lets you run a command across multiple nodes in a cluster. ... seconds set connect timeout (default is 10 sec) -u seconds set command timeout (no default) -f n use fanout of n nodes -w host,host,... set target node list on command line -x ... The pdsh parallel shell tool lets you run a command across multiple nodes in a cluster.

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Security in the AWS cloud with GuardDuty

09.04.2019

Home » Archive » 2019 » Issue 50: Bpfilter »

billing, and the Infrastructure-as-a-Service (IaaS) model from AWS, do not forget the continual blessing of new features and services by the bucket load (pun intended). Some of these cloud services fall

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Keeping Docker containers safe

13.02.2017

Home » Archive » 2017 » Issue 37: Distr... »

sitting attentively waiting for an attack; instead, a user with much less system access listens. You can find out more about privilege separation online if you're interested [9]. In Figure 2, you can see

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Parallel Programming with OpenCL

04.11.2011

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-release driver for OpenCL 1.1 [9]. As a temporary workaround, you can add the C++ bindings header file (cl.hpp ) to the system global include folder /usr/local/include/CL/cl.hpp or copy it into your own project

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Let the Editor Wars Begin!

25.08.2016

Home » HPC » Articles »

and the other active members of the nano project decided to leave the GNU project, leaving GNU nano intact but taking active development outside of GNU (a fork). This move was taken because of their objections

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Moving HPC to the Cloud

19.10.2012

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12-core AMD processors ranging in speed from 2.2 to 2.9GHz with 24 to 128GB of RAM per server and up to 1TB of scratch local storage per node. Getting applications running POD HPC clouds can be quite

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Profiling Python code

30.01.2020

Home » Archive » 2020 » Issue 55: AWS L... »

of code. Listing 1 Time to Execute import time start_time = time.time() # Code to check follows a, b = 1,2 c = a + b # Code to check ends end_time = time.time() time_taken = (end_time- start

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Finding cracks with Nmap, Portbunny, and Nessus

30.11.2025

Home » Archive » 2010 » Issue 0: Active... »

network printer on an internal network. The scan relies on the fact that the IPID (a numeric field in the IP packet header) rises linearly on older systems and is thus predictable

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I/O benchmarks with Fio

30.11.2025

Home » Archive » 2011 » Issue 5: Pen Te... »

workload is pretty time-consuming. The current version of Fio is 1.57. I have created a package for Debian that the Ubuntu developers integrated into Ubuntu. If you have SUSE versions since SLES 9 and open

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Automate CentOS and RHEL installation with PXE

02.02.2021

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

timezone 19 timezone Europe/Vienna --isUtc --ntpservers 172.23.48.8,172.23.48.9 20 # user setup 21 user --name=example-user --password= --iscrypted --gecos="example-user" 22 # Disk partitioning

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