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15%
A simple approach to the OCFS2 cluster filesystem
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Kheng Ho Toh, 123RF.com
_dlm] root 3467 7 0 20:07 ? 00:00:00 [o2net] root 3965 7 0 20:24 ? 00:00:00 [ocfs2_wq] root 7921 7 0 22:40 ? 00:00:00 [o2hb-BD5A574EC8] root 7935 7
15%
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
15%
Benchmarking a new architecture
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Lead Image © Lucy Baldwin, 123RF.com
  Quad-core Xuantie C910   64KB+64KB data/instruction caches per core   1MB shared L2 cache GPU 50GFLOPS BXM-4-64 NPU 4TOPS INT8 at 1GHz
15%
Embarrassingly parallel computation
01.06.2024
Home »  Archive  »  2024  »  Issue 81: Load...  » 
Lead Image © Lucy Baldwin, 123RF.com
_Comm_size(MPI_COMM_WORLD, &nodenum); 21 long recieved[nodenum]; 22 long recvniter[nodenum]; 23 srand(SEED+myid); //Give rand() a seed value. Needs to be different on each node 24 25 if(myid != 0
15%
Data acquisition with shell tools
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Dmitriy Syechin, 123RF
"------------------------------------------------------" 18 echo -n "Replace stored data line (y)? ";read we 19 if [ "$we" = "y" ]; 20 then 21 22 # Delete line and write to 23 # temporary file 24 25 # Build sed instruction 26
15%
Processor and Memory Metrics
12.02.2014
Home »  HPC  »  Articles  » 
B       xsettings-kde   ...    12.3 MiB +   2.2 MiB =  14.6 MiB       gedit  22.9 MiB +   4.0 MiB =  26.9 MiB       plasma-desktop  26.4 MiB +   5.7 MiB =  32.1 MiB       konsole (3)  28.3 MiB +   4.4 MiB =  32.7 MiB       kwin 147
15%
Warewulf 4 – Time and Resource Management
17.01.2023
Home »  HPC  »  Articles  » 
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
15%
Building a HPC cluster with Warewulf 4
04.04.2023
Home »  Archive  »  2023  »  Issue 74: The F...  » 
Photo by Andrew Ly on Unsplash
timedatectl $ ssh n0001 [laytonjb@n0001 ~]$ timedatectl Local time: Sat 2022-12-17 11:31:26 EST Universal time: Sat 2022-12-17 16:31:26 UTC RTC time: Sat 2022-12
15%
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
15%
Tracing applications with OProfile and SystemTap
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© boing, Photocase.com
686 oprofile-0.9.5-4.fc12.i686 To profile the kernel, you need to tell OProfile where the kernel image is located with the --vmlinux option: opcontrol --setup --vmlinux=/usr/lib/debug/lib/ modules

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