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31%
A Btrfs field test and workshop
31.10.2025
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© Adrian Hillman, 123RF.com
and subsequently renaming a subvolume can be done on the fly (Figure 16): mount -o subvolid=0 /dev/dm-0 /mnt && cd /mnt btrfs sub delete @ mv @apt-snapshot-2012-07-23_08\:52\:34/ @ cd && umount /mnt
31%
Linux small business servers compared
31.10.2025
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© Umzugskartons, fotolia.
.2-2 Community Edition used for this test is also available in a 32-bit version and as a virtual machine image. According to the Zentyal roadmap, version 3.0 was about to be released at the time of testing
31%
Introducing the NoSQL MongoDB database
04.12.2024
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Photo by Wesley Tingey on Unsplash
; processes known as mongos route queries to the correct shard. The config server's metadata makes sure this happens. © MongoDB [3] Version 8.0 of MongoDB introduced embedded config servers, which means
31%
Web applications with Julia
26.01.2025
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Lead Image © sony sivanandan, 123RF.com
startserver() 05 WebSockets.listen("127.0.0.1", PORT) do ws 06 for msg in ws 07 d = Meta.parse(JSON.parse(msg)["s"]) 08 WebSockets.send(ws, """

You picked $d

30%
Code IaC for provisioning of preconfigured virtual environments
26.01.2025
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Lead Image © vladnikon, 123RF.com
is an excellent Bicep-based reference and starting point that helps you get up and running quickly [3]. Table 1 BICEP Resource Definitions Resources Versioned w/@yyyy-mm-dd-state Common
30%
The PHP FastCGI process manager, PHP-FPM
31.10.2025
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© conceptw, 123RF.com
. Launch Ramp PHP-FPM has been part of the official PHP package since PHP 5.4.0 and is therefore also included by most current Linux distributions and available through their package managers. The package
30%
Tools for hardware diagnostics under Windows
26.01.2025
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Lead Image © blas, Fotolia.com
Windows versions from NT 4.0 and the current versions come with the msinfo32 command-line program, which reports a first look of the machine hardware. The program offers a good overview of the available
29%
Moving HPC to the cloud
31.10.2025
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© Zarko Cvijovic, 123RF.com
, or spot purchase of resources. Generally, the cost for on-demand EC2 instances are as follows: Quadruple Extra Large Instance is US$ 1.3/hour (US$ 0.33/core per hour), Eight Extra Large Instance is US$ 2
29%
Introduction to OpenMP programming
31.10.2025
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© Frank Rohde, 123RF.com
PRIVATE (id) 06 07 id = omp_get_thread_num() 08 write(*,*) 'Thread ',id,' Checking in' 09 10 IF (id == 0) THEN 11 WRITE(*,*) ' Number of threads in use is ',omp_get_num_threads() 12 ENDIF 13 14
29%
Tuning loops – from loop unrolling to Duff's device
28.07.2025
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[i] + b[i]; } When the number of cycles is known at compile time, a loop can be fully unrolled: c[0] = a[0] + b[0]; c[1] = a[1] + b[1]; c[2] = a[2] + b[2]; c[3] = a[3] + b[3]; However, it remains

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