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Prepare, analyze, and visualize data with R
07.06.2019
Home »  Archive  »  2019  »  Issue 51: Self-...  » 
Lead Image © Buchachon Petthanya, 123RF.com
(dayOfYear):as.factor(wday)Monday 16.64 18 8.382 < 2e-16 *** s(dayOfYear):as.factor(wday)Saturday 11.29 18 3.307 3.00e-09 *** s(dayOfYear):as.factor(wday)Sunday 12.92 18 4.843 1.02e-13 *** --- Signif. codes: 0
20%
Managing virtual machines
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© Igor Klimov, 123RF.com
"creating" $vmname 09 10 virsh suspend rhstorage 11 virt-clone -o rhstorage -n $vmname -f /var/lib/libvirt/images/$vmname.qcow 12 virsh resume rhstorage 13 14 oldmac="52:54:00:B4:DF:EB" 15 newmac
20%
Parallel Programming with OpenCL
04.11.2011
Home »  HPC  »  Articles  » 
of Top 500 supercomputing sites. It is possible to invoke the GPU directly to assist with generic application processing, but the data has to be parallelizable. In today’s machines, quad- and hexacore
20%
Reading and understanding database execution plans
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Gunnar Pippel, 123RF.com
"."EUR_VALUE">=10) 26 3 - access<+>6<+>( "S"."SALE_DATE">TRUNC(SYSDATE@!) 27 -INTERVAL'+00-06' YEAR(2) TO MONTH) 1  The explain plan for command only stores the execution plan in the PLAN_TABLE. 2  The DBMS
20%
Four solutions for Prometheus long-term storage
26.01.2025
Home »  Archive  »  2025  »  Issue 85: Monit...  » 
Lead Image © sidewaypics, 123RF.com
). The sidecar sends the data to an object store, typically a Simple Storage Service (S3). Of course, this does not have to be the real Amazon S3; a local replica based on, say, MinIO or RADOS Gateway will work ... If you use Prometheus as a time series database, you will know that the more data it stores, the slower it becomes. Thanos, Cortex, Mimir, and M3DB set out to solve this problem in totally different
20%
Intruder Detection with tcpdump
28.11.2011
Home »  Articles  » 
 
to show seconds and microseconds since the beginning of the Unix epoch (00:00:00 UTC on January 1, 1970) (Figure 3). Figure 3: Reporting time since
20%
Gathering Data on Environment Modules
10.09.2012
Home »  HPC  »  Articles  » 
for user running script uid=$(id -ur) gid=$(id -gr) # This returns time in seconds since 1970-01-01 00:00:00 UTC time=$(date +"%s") # Create final string for output to file final
20%
Appendix – I/O Report from MPI Strace Analyzer
15.02.2012
Home »  HPC  »  Newsletter  »  2012-02-15 HPC...  » 
 
/shm/Intel_MPI_ft2sMG 23   /dev/shm/Intel_MPI_FlKyRG 23   /dev/shm/Intel_MPI_FlKyRG 23   /dev/shm/Intel_MPI_QV00CT 23   /lustre
20%
Appendix – I/O Report from MPI Strace Analyzer
26.01.2012
Home »  HPC  »  Newsletter  »  2012-02-01 HPC...  » 
 
/shm/Intel_MPI_ft2sMG 23   /dev/shm/Intel_MPI_FlKyRG 23   /dev/shm/Intel_MPI_FlKyRG 23   /dev/shm/Intel_MPI_QV00CT 23   /lustre
20%
Tuning I/O Patterns in Python
18.12.2013
Home »  HPC  »  Articles  » 
2P). Listing 2P: Python Code Example with Output in Loop (One-by-One) 1 #!/usr/bin/python 2 3 if __name__ == "__main__": 4 5 local_dict = {'x':0, 'y':0, 'z':0,'value':0.0}; 6 7 counter

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