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19%
Logical Bombs for Fun and Benchmarking
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Lead Image © Lucy Baldwin, 123RF.com
such invocation is essentially a pure processor workload that will maximally use up to one CPU core while taking up close to zero I/O or memory resources. The top [3] command displays a perfect 1.00 load average
19%
Linux Writecache
19.11.2019
Home »  HPC  »  Articles  » 
, ioengine=libaio, iodepth=32 fio-3.1 Starting 1 process Jobs: 1 (f=1): [w(1)][100.0%][r=0KiB/s,w=1401KiB/s][r=0,w=350 IOPS][eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=3104: Sat Oct 12 14:39:08 2019   write: IOPS=352
19%
Thread processing in Python
02.06.2020
Home »  Archive  »  2020  »  Issue 57: Artif...  » 
Lead Image © Christos Georghiou, 123RF.com
around the GIL is to run computationally intensive code outside of Python with tools such as Cython [1] and ctypes [2]. You can even use F2PY [3] with compiled C functions. All of the previously mentioned
18%
Monitoring HPC Systems
11.06.2014
Home »  Archive  »  2014  »  Issue 21: Manag...  » 
Lead Image © Alexander Rivosh, 123RF.com
so many options and opinions is not a bad thing, but you need to sort through the ideas to find something that works for you and your situation. In two further blog posts [3] [4], I wrote some simple
18%
Caching with CacheFS
07.07.2020
Home »  HPC  »  Articles  » 
. This architecture allows FS-Cache to use alternative caching mechanisms. The first implementation of CacheFS was developed by Sun Microsystems in 1993 for the Solaris 2.3 operating system. After that, other versions
18%
Warewulf Cluster Manager – Administration and Monitoring
21.08.2012
Home »  HPC  »  Articles  » 
-------------------- ----------- -------- ---------------- ------ ----- ------ ------ ----- - ----- 10.test1 laytonjb batch mpi_pi_fortran90 -- 1 3 -- 00:10 Q -- The qstat command gets the status of the queues in Torque, and the -a option tells it to check all
18%
Graphite: Collect and Visualize Numeric Data
30.07.2014
Home »  HPC  »  Articles  » 
00:00:00 Thursday January 1, 1970, Coordinated Universal Time (UTC). Listing 1: Perl Example Client #!/usr/bin/perl   use strict; use warnings; use IO::Socket; use Sys::CpuLoad;   my
18%
Malware Analysis
11.06.2014
Home »  Archive  »  2014  »  Issue 21: Manag...  » 
Lead Image © raptorcaptor, 123RF.com
image, and then Volatility [3] and Mandiant Redline [4] for further investigation. In this paper, I dive more deeply into Redline and Volatility. To begin, I review a raw memory dump of a known malware
18%
Creating and evaluating kernel crash dumps
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Giuseppe Ramos, 123RF.com
, the problem of writing a dump to an MD RAID or transferring larger kernel images ultimately proved unfixable. Further attempts with Netdump (Red Hat) or Diskdump [3] in 2002 and 2004 also had only moderate
18%
I/O Profiling at the Block Level
27.08.2014
Home »  HPC  »  Articles  » 
files in ext3/ext4 filesystems Zipf theta - Estimate of Zipfian distribution theta Ioprof is written in Perl and is fairly easy to run, but it has to be run as root (or with root privileges

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