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16%
mpi4py – high-performance distributed Python
30.11.2020
Home »  Archive  »  2020  »  Issue 60: Secur...  » 
Lead Image © liu liming, 123RF.com
the code is straightforward: $ mpirun -n 4 -f ./hosts python3 trap-mpi4py.py Another sample problem (Listing 8) integrates x ^2 over the interval from 0.0 to 2.0. The output contains information about what
15%
Analyzing Kernel Crash Dumps
25.11.2012
Home »  Articles  » 
 
 crash /proc/iomem   03000000-0affffff : Crash kernel [root@rhel ~]# grep crash /proc/cmdline ro root=/dev/mapper/VolGroup00-LogVol00 rd_NO_LUKS KEYBOARDTYPE=pc \ KEYTABLE=de-latin1-nodeadkeys rd
15%
GNU Parallel: Multicore at the Command Line with GNU Parallel
04.11.2011
Home »  HPC  »  Articles  » 
command [3], you can use GNU parallel as a drop-in replacement and start executing many things at once right away. Surprisingly, the parallel command was not packaged for Fedora 13 or the Fedora Rawhide
15%
HPC Software Road Gets a Bit Smoother
10.09.2013
Home »  HPC  »  Articles  » 
.80 626.49 0.70% FT 24,451.57 17,554.99 28.00% IS 470.63 904.86 48% LU 40,600.64 34,120.96 16.00% MG ... New OpenMP 4.0 Spec
15%
Ansible collections simplify AIX automation
05.08.2024
Home »  Archive  »  2024  »  Issue 82: Sover...  » 
Lead Image © alexutemov, 123RF.com
/.ansible/collections:/usr/share/ansible/collections executable location = /usr/bin/ansible python version = 3.11.2 (main, Feb 17 2023, 09:48:02) [GCC 8.5.0 20210514 (Red Hat 8.5.0-18)] (/usr/bin/python3.11) jinja version = 3.1.2 libyaml = False
15%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
33 enum { probes = 10, loops = 1, }; 34 uint64_t iterations = strtoull(argv[1], 0, 0); 35 uint64_t upper = iterations*iterations; 36 37 double pi = M_PI; 38 double r = 0.0; 39 40 stats
15%
First steps in IT automation by Rex
11.06.2014
Home »  Archive  »  2014  »  Issue 21: Manag...  » 
Lead Image © Konstantin Chagin , 123RF.com
architecture => 'i686' 10 kernel => 'Linux' 11 kernelrelease => '3.11.0-15-generic' 12 } 13 $hostname = 'sugar' 14 $operating_system = 'Ubuntu' 15 $operatingsystem = 'Ubuntu' 16 $operating
15%
Warewulf 4 – GPUs
20.02.2023
Home »  HPC  »  Articles  » 
 the file /usr/local/bin/gpu_devices.sh  (Listing 6). Listing 6: /usr/local/bin/gpu_devices.sh #!/bin/bash   /sbin/modprobe nvidia   if [ "$?" -eq 0 ]; then   # Count the number of NVIDIA controllers found.   NVDEVS=`lspci | grep -i NVIDIA`   N3
15%
Building a HPC cluster with Warewulf 4
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Photo by Andrew Ly on Unsplash
.pool.ntp.org driftfile /var/lib/chrony/drift makestep 1.0 3 rtcsync allow 10.0.0.0/8 local stratum 10 keyfile /etc/chrony.keys leapsectz right/UTC logdir /var/log/chrony I pointed the head node to 2.rocky
15%
Warewulf 4 – Time and Resource Management
17.01.2023
Home »  HPC  »  Articles  » 
modified mine to keep it really simple: server 2.rocky.pool.ntp.org driftfile /var/lib/chrony/drift makestep 1.0 3 rtcsync allow 10.0.0.0/8 local stratum 10 keyfile /etc/chrony.keys leapsectz

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