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17%
openlava – Hot resource manager
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Konrad Bak, 123RF.com
that this binary is installed into /opt/openlava-2.0. For the Warewulf cluster I used in my testing, this works out very well because /opt is NFS-exported from the master node to the compute nodes. The first step
17%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
->tv_nsec) * 1E-9; 24 } 25 26 int main(int argc, char* argv[argc+1]) { 27 if (argc < 2) { 28 fprintf(stderr, "Usage: %s NNN, NNN iterations\n", 29 argv[0]); 30 return EXIT_FAILURE; 31 } 32
17%
Stretching devices with limited resources
03.02.2022
Home »  Archive  »  2022  »  Issue 67: syst...  » 
Lead Image © Lucy Baldwin, 123RF.com
eMMC (not populated) Network 1x Topaz networking switch   2x GbE LAN   1x Ethernet WAN   1x MiniPCIe slot USB 1x USB 3.0
17%
Endlessh and tc tarpits slow down attackers
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © Yewkeo, 123RF.com
FD TYPE DEVICE SIZE/OFF NODE NAME docker-pr 13330 root 4u IPv4 91904 0t0 TCP *:2222 (LISTEN) A simple test is to use the unerring, ultra-reliable netcat to see what is coming back
17%
Parallel Julia – Jumping Right In
29.06.2012
Home »  HPC  »  Articles  » 
| | | | | | |/ _` | | | | |_| | | | (_| | | Version 0.0.0+86921303.rc6cb _/ |\__'_|_|_|\__'_| | Commit c6cbcd11c8 (2012-05-25 00:27:29) |__/ | julia> If you don't want to see the title on subsequent start ups use julia -q
17%
First steps in IT automation by Rex
11.06.2014
Home »  Archive  »  2014  »  Issue 21: Manag...  » 
Lead Image © Konstantin Chagin , 123RF.com
architecture => 'i686' 10 kernel => 'Linux' 11 kernelrelease => '3.11.0-15-generic' 12 } 13 $hostname = 'sugar' 14 $operating_system = 'Ubuntu' 15 $operatingsystem = 'Ubuntu' 16 $operating
17%
Fundamentals of I/O benchmarking
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © Kheng Ho Toh, 123RF.com
that bypasses the filesystem and accesses the underlying layer (e.g., device files such as /dev/sda or /dev/dm-0) directly. In comparison, a filesystem benchmark addresses the filesystem but does not necessarily
17%
Have a Bash with the Zing network utility
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Micah Tindell on Unsplash
is used per the netcat report: localhost [127.0.0.1] 80 (http): Connection refused The result in the hosttext variable is then checked for warnings and errors, which are reported if detected
17%
Top Three HPC Roadblocks
12.01.2012
Home »  HPC  »  Articles  » 
. Refocus Performance Goals The Top500 is a great historical resource, as well as a way for the "top" computer vendors and users to measure their progress. The problem with the Top500 is that a majority
17%
How Linux and Beowulf Drove Desktop Supercomputing
17.02.2021
Home »  HPC  »  Articles  » 
software tools and projects, best practices, tutorials, and a community that is willing to help each other. By the end of the 1990s 28 clusters were in the TOP500. Figure 1 (source: TOP500 Development Over

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