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78%
Programming with OpenMP
07.11.2011
Home »  HPC  »  Articles  » 
, how can you get all the threads to work on a collated result – for example, to total the values in an array? reduction() (Listing 2) handles this. Listing 2: reduction() 01 a = 0 ; b = 0 ; 02 #pragma
78%
Get the best out of your bandwidth with tc
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Russell Shively, 123RF.com
is as follows: tc filter add dev $DEV protocol ip parent 1:0 prio 100 u32 match ip $DIR 12.34.56.78 flowid 1:12 You'll be glad to know the filter's config is much simpler than the classes or the qdisc
78%
Distributed storage with Sheepdog
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © kateleigh, 123RF.com
compiling (Listing 2). Listing 2 Sheepdog Uses the FNV-1a Algorithm 01 #define FNV1A_64_INIT ((uint64_t) 0xcbf29ce484222325ULL) 02 #define FNV_64_PRIME ((uint64_t) 0x100000001b3ULL) 03 04
78%
Embarrassingly parallel computation
01.06.2024
Home »  Archive  »  2024  »  Issue 81: Load...  » 
Lead Image © Lucy Baldwin, 123RF.com
long count=0; //Count holds all the number of how many good coordinates 14 double z; //Used to check if x^2+y^2<=1 15 double pi
78%
Run One Program at any Scale with Legate
08.06.2021
Home »  HPC  »  Articles  » 
 numpy as np nx = 100 ny = 100 a = np.random.rand(nx,ny) b = np.random.rand(ny) x = np.linalg.solve(a, b) Array a and the second part of the tuple, b , are created by a random number generator with random
78%
Parallel Programming with OpenCL
04.11.2011
Home »  HPC  »  Articles  » 
with a fictive “do in parallel … .” Listing 2: Pseudocode for Execution in Parallel 01 // Do in parallel 02 for all y in {0, ..., out.height ‑ 1} and all x in {0, ..., out.width ‑ 1} 03 { 04     float
78%
Cgroups for resource management in Linux
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Photographer, 123RF.com
in the cgroup. You can then use the tc with the group. Start by defining the classID for the cgroup: echo 0x00100001 > /cgroup/net_cls/libvirt/qemu/guest/net_cls.classid This hexadecimal number comprises two
78%
Creating an SFTP jail
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Juan Manuel Ordonez, 123RF.com
.bash_profile. Note that this setup assumes you will later install OpenSSH in /usr/local/. Listing 1 .bash_profile Variables 01 CC=gcc 02 CPPFLAGS=-I/usr/local/ssl/include 03 EDITOR=vi 04
78%
Exploring OpenShift – Red Hat's next-generation PaaS tool
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
(C) Markus Feilner, CC-BY-SA 4.0
Tomcat 7 (JBoss EWS 2.0) web 21 jboss-vertx-2.1 (!) Vert.x 2.1 web 22 jboss-wildfly-8 (!) WildFly Application Server 8.2.0.Final web 23 diy-0.1
77%
Speed up your MySQL database
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Mikhail Dudarev, 123RF.com
Use of mysqld # ps aux | egrep 'mysqld|VSZ' USER PID %CPU %MEM VSZ RSS START TIME COMMAND mysql 1568 0.0 0.0 4440 744 Sep08 0:00 mysqld_safe mysql 2337 0.1 5.9 29163040

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