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18%
OpenACC – Porting Code
07.03.2019
Home »  HPC  »  Articles  » 
 acc parallel loop       {          for (j=0; j < m; j++) {             ...          }       }       ...    } } Table 3: Single-Directive Nested Loop Fortran C !$acc parallel loop    do i=1,n       ...       do
18%
Profiling Python code
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Lead Image ©-Yong Hian Lim, Fotolia.com
of code. Listing 1 Time to Execute import time start_time = time.time() # Code to check follows a, b = 1,2 c = a + b # Code to check ends end_time = time.time() time_taken = (end_time- start
18%
Using loop directives to improve performance
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Lead Image © orson, 123RF.com
if z(i) depends on a previous value, as in the following: do i = 2,n z(i) = z(i-1)*2 enddo As written, you can't generally parallelize the loop because of data dependency [4]. This dependency
18%
Uncovering SQL Injections
18.03.2013
Home »  Articles  » 
 
is a classic bug in a web application: an SQL injection vulnerability. SQL injection, which has been known for around 12 years, is still one of the hacker’s most popular tools. This article presents real
18%
Kopano Groupware – an open source productivity suite
30.11.2020
Home »  Archive  »  2020  »  Issue 60: Secur...  » 
Lead Image © Klementiev, fotolio.com
install kopano-webapp # exit ### If you have the Community Packages $ wget https://download.kopano.io/community/webapp%3A/webapp-4.2.2860%2B1697.1.12a4e21-Ubuntu_18.04-all.tar.gz $ tar xfz webapp-4.2.2860+1697.1.12
18%
ZAP provides automated security tests in continuous integration pipelines
23.08.2017
Home »  Archive  »  2017  »  Issue 41: Kuber...  » 
Lead Image © Galina Peshkova, 123RF.com
03736 bash zap@03736c2a2088:/zap$ x11vnc --forever --usepw --create Enter VNC password: Verify password: Write password to /home/zap//.vnc/passwd? [y]/n y Password written to: /home
18%
Resource Management with Slurm
05.11.2018
Home »  HPC  »  Articles  » 
One way to share HPC systems among several users is to use a software tool called a resource manager. Slurm, probably the most common job scheduler in use today, is open source, scalable, and easy ...    infinite         4/9/3/16  node[212-213,215-218,220-229] This example lists the status, time limit, node information, and node list of the p100 partition. sbatch To submit a batch serial job to Slurm, use the ... One way to share HPC systems among several users is to use a software tool called a resource manager. Slurm, probably the most common job scheduler in use today, is open source, scalable, and easy
18%
Measuring the performance health of system nodes
02.08.2022
Home »  Archive  »  2022  »  Issue 70: Defen...  » 
Lead Image © Peter Hermes Furian, 123RF.com
. The primary changes made to the benchmarks of the latest version 3.4.2 of the NPB are: added class F to the existing S, W, A, B, C, D, E added dynamic memory allocation added MPI and Open
18%
Resource Management with Slurm
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image © Vladislav Kochelaevs, fotolia.com
. Listing 2 sinfo $ sinfo -s PARTITION AVAIL TIMELIMIT NODES(A/I/O/T) NODELIST p100 up infinite 4/9/3/16 node[212-213,215-218,220-229] sbatch To submit a batch serial
18%
Performance Health Check
13.06.2022
Home »  HPC  »  Articles  » 
Many HPC systems check the state of a node b efore  running a n  application, but not very many check that the performance of the node is acceptable before running the job. ... made to the benchmarks of the latest version 3.4.2 of the NPB are: added class F to the existing S, W, A, B, C, D, E added dynamic memory allocation added MPI and OpenMP programming models ... Many HPC systems check the state of a node b efore  running a n  application, but not very many check that the performance of the node is acceptable before running the job.

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