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31%
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 2.0
31%
Darshan I/O analysis for Deep Learning frameworks
27.09.2021
Home »  Archive  »  2021  »  Issue 65: 7 Em...  » 
Photo by Michaela Murphy on Unsplash
[2] (section 3.2). Next, I built the Darshan utilities (darshan-util) with the command: ./configure CC=gcc --prefix=[binary location] Because I'm running these tests on an Ubuntu 20.04 system, I had
31%
How to configure and use jailed processes in FreeBSD
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© Corina Rosu, 123RF.com
, 09 sizeof(j)); 10 [...] 11 MALLOC(pr, struct prison *, 12 sizeof(*pr), 13 M_PRISON, M_WAITOK | M_ZERO); 14 [...] 15 error = copyinstr(j.path, 16 &pr->pr_path, sizeof
31%
Analyzing Kernel Crash Dumps
25.11.2012
Home »  Articles  » 
 
_NO_MD quiet SYSFONT=latarcyrheb-sun16 rhgb \ rd_LVM_LV=VolGroup00/LogVol01 rd_LVM_LV=VolGroup00/LogVol00 \ LANG=de_DE.UTF-8 rd_NO_DM crashkernel=128M [root@rhel ~]# /etc/init.d/kdump status  Kdump
31%
Monitoring HPC Systems
11.06.2014
Home »  Archive  »  2014  »  Issue 21: Manag...  » 
Lead Image © Alexander Rivosh, 123RF.com
://munin-monitoring.org Cacti: http://www.cacti.net Ganglia: http://ganglia.sourceforge.net Zabbix: http://www.zabbix.com Zenoss Community: http://community.zenoss.org/ Observium: http://www.observium.org/ GKrellM
31%
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
31%
Pen Testing with netcat
14.05.2013
Home »  Articles  » 
 
log in for terminal access: ps –aef |grep ssh This command shows the output: root 571 1 0 Mar26 ? 00:00:00 /usr/sbin/sshd -D Now I can SSH into the target box with my new user account and have
30%
Caching with CacheFS
07.07.2020
Home »  HPC  »  Articles  » 
: active (running) since Sat 2020-07-04 11:00:41 EDT; 33min ago      Docs: man:systemd-sysv-generator(8)   Process: 819 ExecStart=/etc/init.d/cachefilesd start (code=exited, status=0/SUCCESS)     Tasks: 1 (limit: 4915)    CGroup
30%
Modern Fortran for today and tomorrow
17.06.2017
Home »  Archive  »  2017  »  Issue 39: Conta...  » 
Lead Image © homestudio, 123RF.com
04 real :: var2 05 integer :: int1 06 end type other_struct 07 08 type my_struct ! Declaration of a Derived Type 09 integer :: i 10 real :: r 11 real*8 :: r8 12 real, dimension(100
30%
Modern Fortran – Part 1
20.10.2016
Home »  HPC  »  Articles  » 
writing code. Columns 1 to 5 could be used for statement labels such as the following: ...       SUM = 0.0       D0 100 I=1,10          SUM = SUM + REAL(I)  100  CONTINUE ...       Y = X1 + X2 + X3

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