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13%
Profiling Python Code
09.12.2019
Home »  HPC  »  Articles  » 
hints, is written in C as a Python extension and comes in the standard Python 3, which keeps the overhead low, so the profiler doesn’t affect the amount of time much. cProfile outputs a few stats about
13%
Warewulf 4
13.12.2022
Home »  HPC  »  Articles  » 
Some of the early articles I wrote for HPC ADMIN were about Warewulf 3, a cluster provisioning and management tool. The first article was published a little more than nine years ago. People seemed
13%
Using rsync for Backups
07.01.2014
Home »  Articles  » 
 
a great deal of power in a few lines: rm -rf backup.3 mv backup.2 backup.3 mv backup.1 backup.2 cp -al backup.0 backup.1 rsync -a --delete source_directory/ backup.0/ To better understand the script, I
13%
Turning machine state into a database
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Lead Image © Lucy Baldwin, 123RF.com
by the Linux Foundation's recent announcement [2] of yet another open source foundation, this one tasked with steering the development of a really under-appreciated tool named osquery [3]. The announcement
13%
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
13%
Processor and Memory Metrics
12.02.2014
Home »  HPC  »  Articles  » 
) irq  (Linux, FreeBSD) softirq  (Linux) steal  (Linux ≥ 2.6.11) guest  (Linux ≥ 2.6.24) guest_nice  (Linux ≥ 3.2.0) The Python code for gathering CPU statistics isn’t too difficult: I
13%
Sharing Data with SSHFS
23.04.2014
Home »  HPC  »  Articles  » 
.5 FUSE library version: 2.8.3 fusermount version: 2.8.3 using FUSE kernel interface version 7.12 to make sure everything is installed correctly. Testing SSHFS with Linux Now that SSHFS is installed
13%
Red Hat PaaS hyperconverged storage
22.12.2017
Home »  Archive  »  2017  »  Issue 42: Secur...  » 
Lead Image © Oleksandr Omelchenko, 123RF.com
with Gluster containers … Figure 2: … or an external storage cluster, in which the individual Gluster nodes run [3]. A new service in Gluster 3.1.3
13%
Understanding Layer 2 switch port security
22.12.2017
Home »  Archive  »  2017  »  Issue 42: Secur...  » 
Lead Image © Taffi, Fotolia.com
records are flushed. 3. The system halts. Hackers may hope to see results 1 and 2, because the resumption of broadcasts gives the intruder a chance to capture sensitive information. You can check
13%
Pandas: Data analysis with Python
20.03.2014
Home »  Archive  »  2014  »  Issue 19: Perim...  » 
Lead Image © yang chao, 123RF.com
speeds than in a native Python implementation. The easiest approach is to generate NumPy arrays from existing Python lists: np.array([1, 2, 3]) The np stands for the module name of NumPy, which

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