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31.10.2025
?
The first part of this workshop demonstrated how an additional node can be added to an existing cluster using
ceph osd crush add 4 osd.4 1.0 pool=default host=daisy
assuming that daisy is the hostname
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24.09.2012
it takes to change the filesystem.
Filesystems are responsible for how files are stored on hard drives. Unfortunately, a number of them currently are out there vying for that right. On Linux, ext4
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05.08.2011
see the newly uploaded keypair:
ec2-describe-keypairs
KEYPAIR dan-key
fc:39:b2:60:90:4c:0f:66:fc:b8:a6:54:af:19:0c:ef
KEYPAIR my-key
a6:54:af:19:0c:ef:fc:39:0f:66:fc:b8:b2:60:90:4c
KEYPAIR your
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30.11.2025
address to the target MAC address:
Source MAC address: 0x0000A4F8B321 – The last byte is 0x21 (= binary 00100001); thus, the last three bits are 001.
Target MAC address: 0X0000A2123456 – The last
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12.02.2013
the currently loaded modules in an environment variable called LOADEDMODULES
. For example, if I load two modules (ftw
and mpich2
) and then look at my environment, I will find:
LOADEDMODULES=fftw/3.3.2/gnu4
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21.08.2014
device in the developer forums and the usual websites – from XDA Developers [4] to AndroidPIT [5]. If you have managed to root the device with an app like Superuser [6], you can access a number of apps
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18.06.2014
print all of the directories it processes, which can sometimes lead to a great deal of output:
[laytonjb@home4 HPC_031] ./fsscan.py -o home.pickle -d /home
start_time: 1402853413.36
Starting
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05.12.2019
that is as simple as creating a C interface in Fortran. Another good example can be found on Pierre Augier's website [4].
Fortran/C and ctypes
In the previous article on high-performance Python [5], I presented
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30.11.2025
client or the non-free JollysFastVNC [4] tool to control Windows computers remotely. The server itself is written in C++ and is available for free under the GPL [5].
Incidentally, UltraVNC will also
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15.09.2020
on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
...
/dev/nvme1n1p1 on /home type ext4 (rw,relatime)
/dev/sda1 on /data type ext4 (rw,relatime)
tmpfs on /run/user/1000 type
