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17%
HPC Software Road Gets a Bit Smoother
10.09.2013
Home »  HPC  »  Articles  » 
23,289.81 24,823.29 6% SP 19,751.24 12,061.77 39.00% a BT, block tri-diagonal; CG, conjugate gradient; EP, embarrassingly parallel; FT, 3D fast Fourier
17%
Exploring the most famous performance tool
16.08.2018
Home »  Archive  »  2018  »  Issue 46: CMS S...  » 
Lead Image © Lucy Baldwin, 123RF.com
use across Linux and BSD distributions. Figure 1 shows top version 3.3 on a stock Fedora system. The first line of the dynamically updated display lists the current time, the system's uptime, the number
17%
Discovering device names
16.05.2013
Home »  Archive  »  2013  »  Issue 14: Samba 4  » 
© cbpix, 123RF.com
Recently, a customer asked me what was going on with his system. All of a sudden, he no longer had an eth0; instead, he was seeing strange names like em1 or p3p1 at the console. He wanted to know
17%
Warewulf 4 – GPUs
20.02.2023
Home »  HPC  »  Articles  » 
=/etc/slurm/slurm.epilog.clean NodeName=n0001 Sockets=1 CoresPerSocket=4 ThreadsPerCore=2 State=UNKNOWN PartitionName=normal Nodes=ALL Default=YES MaxTime=24:00:00 State=UP Oversubscribe=EXCLUSIVE Slurmctld
17%
Backups using rdiff-backup and rsnapshot
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Dmitry Pichugin, Fotolia.com
), a daily backup runs every day at 3:30am (seven snaphots are kept), and a weekly backup starts at 3:00am every Monday (four snapshots are available). Regularly running backups using cron is equally suitable
17%
mpi4py – High-Performance Distributed Python
12.11.2020
Home »  HPC  »  Articles  » 
the final answer. The command to run 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
17%
VTP for VLAN management
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Lead Image © bluedarkat, 123RF.com
for the configuration commands), VLAN20 needs to be created on SW1 and SW2 for red hosts to communicate, whereas VLAN 30 must be on SW2 and SW3 for the blue hosts to communicate. If you want the green hosts
17%
Fundamentals of I/O benchmarking
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Kheng Ho Toh, 123RF.com
if less data is requested. Listing 3 IOPS on a Hard Disk # iops /dev/sdb /dev/sdb, 1.00 TB, 32 threads: 512 B blocks: 76.7 IO/s, 38.3 KiB/s (314.1 kbit/s) 1 KiB blocks: 84.4 IO
17%
Monitoring events with the Audit daemon
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © alphaspirit , 123RF.com
. Listing 1 auditd.conf log_file = /var/log/audit/audit.log log_format = RAW log_group = root priority_boost = 3 flush = INCREMENTAL freq = 20 num_logs = 5 disp_qos = lossy dispatcher = /sbin
17%
Top Top-Like Tools
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
. The second number is percent CPU load from the system (0.3%sy), and the next is percentage of jobs that are "nice" [2] (0.0%ni). After that, Top lists percent overall CPU time idle (86.3%id; four real cores

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