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19%
Warewulf 4 – Time and Resource Management
17.01.2023
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is working, boot the compute node and run timedatectl : $ ssh n0001 [laytonjb@n0001 ~]$ timedatectl                Local time: Sat 2022-12-17 11:31:26 EST            Universal time: Sat 2022-12
19%
Filesystem Encryption
12.05.2014
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[laytonjb@test1 decrypted]$ ls -l total 8 -rw-rw-r-- 1 laytonjb laytonjb 10 Sep  4 15:12 bar -rw-rw-r-- 1 laytonjb laytonjb 10 Sep  4 15:12 foo lrwxrwxrwx 1 laytonjb laytonjb  3 Sep  4 15:12 foo2 -> foo
19%
Baselines are more important than  the  benchmark
06.10.2022
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Lead Image © Lucy Baldwin, 123RF.com
, as opposed to what theory predicts. The OpenSSL project incorporates two useful benchmarks: openssl speed [6], which tests cryptographic performance in abstract on the local machine without any network access
19%
StarCluster Toolkit: Virtualization Meets HPC
16.01.2013
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 name 05 #$ -N pi 06 # Use current working directory 07 #$ -cwd 08 # Join stdout and stderr 09 #$ -j y 10 # PARALLEL ENVIRONMENT: 11 #$ -pe orte 2 12 # Enable resource reservation 13 #$ -R y 14 # The max
19%
Visualizing time series data
21.08.2014
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Lead Image © Maxim Kazmin, 123RF.com
_port = 2003; 10 11 # create Socket 12 my $socket = IO::Socket::INET -> new(PeerAddr => $remote_host, 13 PeerPort => $remote_port, 14 Proto => "tcp", 15 Type => SOCK_STREAM) 16 or die "Couldn
19%
Building Virtual Images with BoxGrinder and VMBuilder
07.01.2013
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OS 01 name: centos 02 summary: CentOS installation with BoxGrinder 03 os: 04   name: centos 05   version: 6 06 hardware: 07   partitions: 08     "/": 09       size: 4 10     "/home": 11       size: 1 12
19%
Stat-like Tools for Admins
19.11.2014
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traffic over eth0, you can get an idea of network activity: dstat -tn -N eth0 1 10 I added the time option (-t ) and the network stats option (-n ), then monitored the network device of interest (-N eth0
19%
Speed up your MySQL database
11.02.2016
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Lead Image © Mikhail Dudarev, 123RF.com
there are normally two. The size of these two files influences the speed of write access to InnoDB. This value was far too small for many years (5MB). The new default values in MySQL  5.6 take this into account
19%
Lustre HPC distributed filesystem
07.04.2022
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Photo by Efe Kurnaz on Unsplash
). This output will be the Lustre Networking (LNET) NID, which can be verified by: $ sudo lctl list_nids 10.0.0.2@tcp Listing 6 Management Server $ sudo ifconfig eth0 eth0: flags=4163
19%
Look for Bottlenecks with Open|SpeedShop
21.12.2011
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ossfpe "mpirun -np 2 ./smg2000 -n 10 10 10" creates a database file that, when viewed, can map the floating-point exceptions back to the source lines where they occurred. Here, I use the CLI to illustrate

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