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17%
HDF5 with Python and Fortran
21.03.2017
Home »  HPC  »  Articles  » 
   # =================== 09   # 10  if __name__ == '__main__': 11  12      f = h5py.File("mytestfile.hdf5", "w") 13  14      dset = f.create_dataset("mydataset", (100,), dtype='i') 15     16      dset[...] = np.arange(100) 17
17%
Obtain certificates with acme.sh
27.09.2021
Home »  Archive  »  2021  »  Issue 65: 7 Em...  » 
Lead Image © Stuart Miles, 123RF.com
, such as: _acme-challenge.www.example.org. 300 IN TXT "Y5YvkzC_4qh9gKj6...jxAjEuX1" Additionally, the protocol uses nonces to protect against replay attacks and provides a workflow for revoking issued
17%
Pushing Raspberry Pi storage to its limit
04.12.2024
Home »  Archive  »  2024  »  Issue 84: Non-R...  » 
Lead Image © Lucy Baldwin, 123RF.com
capable of read speeds up to 4,900MBps (and up to 3,700MBps write speed), with total capacity of 512GB [6] (about $70). The unit is rated at a staggering 400K read and 900K write I/O operations per second
17%
Why Good Applications Don't Scale
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © man64, 123RF.com
: In Equation 1, a is the application speedup, n is the number of processors, and p is the "parallel fraction" of the application (i.e., the fraction of the application that is parallelizable), ranging from 0
17%
Automatic data encryption and decryption with Clevis and Tang
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Photo by London Scout on Unsplash
supports various encryption and decryption methods, for automatic data decoding. In the Clevis world, these methods are known as PINs (hence the name Clevis and Tang) [6]. The Tang service can be used
17%
Interprocess communication essentials in Perl
05.12.2019
Home »  Archive  »  2019  »  Issue 54: NVMe...  » 
Lead Image © Carsten Reisinger, 123RF.com
to send STDOUT to a file or you can use the notation $this_value = `this_program 1>&2`; to catch a program's STDOUT and STDERR. This example shows the backtick method, but you can also use the open
17%
Testing the Samsung MU-PA500B 500GB SSD
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Lead Image © Lucy Baldwin, 123RF.com
of their internal 2.5-inch SATA devices, coming in at a mere 2.3x3x0.5 inches (5.8x7.6x1.3 cm) – smaller than a Post-it note (Figure 1). Available in sizes ranging from 256GB to 2TB, the specimen in our lab is the MU
17%
OpenMP – Parallelizing Loops
03.04.2019
Home »  HPC  »  Articles  » 
in Table 3 that you can nest parallel regions. The first parallel region will use N  threads (N  cores), and the second parallel region (the nested parallel region) will use N  threads for each thread
17%
The best performance yet
26.01.2025
Home »  Archive  »  2025  »  Issue 85: Monit...  » 
Lead Image © Lucy Baldwin, 123RF.com
in combination with a card supporting the extended standard (SDXC). CQ mode was introduced in 2017 with version 6.0 of the SD specification [4], but although the Linux kernel had been supporting CQ mode for e
17%
Law of Averages – Load Averaging
01.02.2013
Home »  Articles  » 
 
at the output of uptime [1] on OS X:   13:03 up 2 days, 12:01, 2 users, load averages: 0.52 0.59 0.63   The uptime command displays the load average in its common form, averaging the last one, five, and 15

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