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25%
Tuning I/O Patterns in Fortran 90
04.12.2013
Home »  HPC  »  Articles  » 
common in HPC to illustrate these differences: C, Fortran 90, and Python (2.x series). I run the examples on a single 64-bit system with CentOS 6.2 using the default GCC compilers, GCC and GFortran (4
25%
Securing the container environment
01.06.2024
Home »  Archive  »  2024  »  Issue 81: Load...  » 
Lead Image © zeferli, 123RF.com
on a vulnerable pod and then it will enumerate all the secrets from the cluster (Figure 2): kubeletctl exec "whoami" -c container_name -p pod_name -n namespace --server 3.71.72.105 -i kubeletctl scan token
25%
Modern Fortran – Part 2
15.12.2016
Home »  HPC  »  Articles  » 
are over i = 2,n − 1 and j = 2,n −1. Here is how you can write the iteration over the domain using array notation: a(2:n-1,2:n-1) = 0.25 * &     (a(1:n-2,2:n) + a(3:n,2:n) + a(2:n,1:n-2) + a(2:n,3:n ... Modern Fortran – Part 2
25%
Parallel Shells: Run Commands on Multiple Nodes
02.07.2014
Home »  HPC  »  Articles  » 
 host,host,...  set target node list on command line -x host,host,...  set node exclusion list on command line -R name           set rcmd module to name -M name,...       select one or more misc modules to initialize first -N
25%
VTP for VLAN management
04.10.2018
Home »  Archive  »  2018  »  Issue 47: Findi...  » 
Lead Image © bluedarkat, 123RF.com
for the configuration commands), VLAN20 needs to be created on SW1 and SW2 for red hosts to communicate, whereas VLAN 30 must be on SW2 and SW3 for the blue hosts to communicate. If you want the green hosts
25%
A Brief History of Supercomputers
21.01.2021
Home »  HPC  »  Articles  » 
1992 i486DX2 2:1 clock multiplier, 40/20, 50/25, 66/33 speeds; L2 on MB Mar 1994 i486DX4 3:1 clock multiplier, 75/25, 100/33 speeds; 16KB L1 cache on-die, L2
25%
Julia Distributed Arrays
15.08.2012
Home »  HPC  »  Articles  » 
with the distribute(array,dist-dimm) function. The localize(array) function returns the local portion (8 rows by 2 columns) of my now-distributed array. julia> j=distribute(a,2); julia> print(localize(j)); 8x2
25%
Cross-Vendor IPsec
25.10.2011
Home »  Articles  » 
 
/inet/IPsecinit.conf: Contains the policy, like the setkey script on Kame/Racoon; however, the file also contains the algorithms for Phase 2. A tunnel interface is also typically configured. /etc/hostname.ip.tunX: Typically
25%
Processor and Memory Affinity Tools
14.09.2021
Home »  HPC  »  Articles  » 
 $(find /sys/devices/system/cpu -regex ".*cpu[0-9]+/topology/thread_siblings_list") | sort -n | uniq 0,32 1,33 2,34 3,35 4,36 5,37 6,38 7,39 8,40 9,41 10,42 11,43 12,44 13,45 14,46 15,47 16,48 17,49 18,50 19,51 20,52 21,53 22,54 23,55 24,56 25
25%
Where does job output go?
28.11.2023
Home »  Archive  »  2023  »  Issue 78: Domai...  » 
Photo by Charles Forerunner on Unsplash
. For example, today you can get consumer-grade 1-2TB SSD drives for well under $100, and I've seen some 1TB SSDs for under $30 (August 2023). Don't forget that SSDs can range from thin 2.5-inch form factors

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