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17%
Tuning loops – from loop unrolling to Duff's device
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
[i] + b[i]; } When the number of cycles is known at compile time, a loop can be fully unrolled: c[0] = a[0] + b[0]; c[1] = a[1] + b[1]; c[2] = a[2] + b[2]; c[3] = a[3] + b[3]; However, it remains
17%
Processor and Memory Affinity Tools
14.09.2021
Home »  HPC  »  Articles  » 
 $(find /sys/devices/system/cpu -regex ".*cpu[0-9]+/topology/thread_siblings_list") | sort -n | uniq 0,32 1,33 2,34 3,35 4,36 5,37 6,38 7,39 8,40 9,41 10,42 11,43 12,44 13,45 14,46 15,47 16,48 17,49 18,50 19,51 20,52 21,53 22,54 23,55 24,56 25
17%
Multiprocessing in Python with Fortran and OpenMP
22.12.2017
Home »  Archive  »  2017  »  Issue 42: Secur...  » 
Lead Image Photo by Zachary Young on Unsplash
the module, using the GFortran compiler version 7.1, and Conda [12] version 4.3.21 with Python 2.7.13; f2py is installed using conda. Building the module is fairly easy by using "the quick and smart way" [13
17%
Warewulf Cluster Manager – Administration and Monitoring
21.08.2012
Home »  HPC  »  Articles  » 
with the compute node: [root@test1 ~]# pbsnodes -a n0001 state = free np = 3 ntype = cluster status = rectime=1343594239,varattr=,jobs=,state=free,netload=118255091,gres=,loadave=0.02,ncpus=3
17%
How to configure and use jailed processes in FreeBSD
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© Corina Rosu, 123RF.com
command: # sockstat | grep "\*:[0-9]" The description for rc.conf(5) lists the services that need to be bound to a fixed IP address via parameters. One example is the inetd service: inetd_flags="-wW -a
17%
Operating systems for the cloud and containers
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © leeavison, 123RF.com
storage is handled by the almost venerable ext3. The use of BusyBox [11] for most executable programs and of Dropbear [12] as the SSH daemon is the logical consequence of the Buildroot underpinnings
17%
Ansible collections simplify AIX automation
05.08.2024
Home »  Archive  »  2024  »  Issue 82: Sover...  » 
Lead Image © alexutemov, 123RF.com
/bin/ksh' user_gecos: 'AIX guest user' user_pgrp: 'staff' user_groups: 'staff' user_fsize: '-1' user_passwd: "{ssha256}06$FkFHd0q1hxVonC2a$sa1WA0G3mPNWtz2GAhUkfcQ7BkD/mNngBu0Tn2.N.cl" collections
16%
Intruder Detection with tcpdump
28.11.2011
Home »  Articles  » 
 
is to put it in a filter: # tcpdump -n -s 1515 -c 5 -i eth1 tcp or udp or icmp This will catch only tcp , udp , or icmp . Tables 3 and 4 show you what you need to know to find all TCP packets with the SYN
16%
Filesystem Murder Mystery
09.04.2019
Home »  Archive  »  2019  »  Issue 50: Bpfilter  » 
Lead Image © Lucy Baldwin, 123RF.com
Unexplained rename() delay: https://twitter.com/jsaryer/status/1069831718389960704 GitHub, James Saryerwinnie: https://gist.github.com/jamesls/9d52c7b3a19491f4d14c2d487515115f rename(2) man page: https
16%
Managing FOSS applications on AIX
27.05.2025
Home »  Archive  »  2025  »  Issue 87: Light...  » 
Lead Image © Nataliia Natykach, 123RF.com
"ulimit -n unlimited; ulimit -c 10; ulimit -m unlimited; ulimit -d unlimited; /opt/freeware/libexec/mysqld" :/usr/bin/sh:27:0:/dev/console:/dev/console:/dev/console:-O:-Q:-S:0:0:20:15:9:-d:20:: Now

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