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18%
Using loop directives to improve performance
05.02.2019
Home »  Archive  »  2019  »  Issue 49: Anato...  » 
Lead Image © orson, 123RF.com
but independently of one another (Figure 2). Table 3 Gang Execution Fortran C !$acc parallel do i=1,n ! do something enddo!$acc end parallel pragma acc parallel{ for (int i=0; i
18%
Discovering SQL injection vulnerabilities
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
© Mika Specta, 123RF.com
and password, are added to the database query. This approach works in theory, but imagine an attacker changing the query like this: Password = ' OR 'a' = 'a' The query to the database is now: SELECT * FROM
18%
TinyDNS
02.03.2012
Home »  Articles  » 
 
.8.8.8:300 @mydomainname.com::mydomainname.com:20:300 +mx3.mydomainname.com:9.9.9.9:300 @mydomainname.com::mx3.mydomainname.com:30:300 Although you have other ways to configure IP addresses, this way should illustrate how
18%
MySQL upgrade obstacles
03.04.2024
Home »  Archive  »  2024  »  Issue 80: Threa...  » 
Lead Image © cycloneproject, 123RF.com
.0. The default meaning of UTF8 is different under MySQL 5.7 and MySQL 8.0. On MySQL 5.7, utf8 is interpreted as utf8mb3 , whereas under MySQL 8.0 it is utf8mb4 . Although utf8 and utf8mb3 are largely compatible
18%
Useful NFS Options for Tuning and Management
15.06.2016
Home »  HPC  »  Articles  » 
client and server TCP stacks. In this article, I've broken the list of tuning options into three groups: (1) NFS performance tuning options, (2) system tuning options, and (3) NFS management/policy options
18%
StarCluster Toolkit: Virtualization Meets HPC
16.01.2013
Home »  HPC  »  Articles  » 
$ starcluster start -s 1 foocluster -n ami-999d49f0 $ starcluster get foocluster /opt/sge6-fresh . $ starcluster terminate foocluster $ starcluster start -o -s 1 -i t1.micro -n ami-e2a0058b imagehost
18%
Uncovering SQL Injections
18.03.2013
Home »  Articles  » 
 
and password , are added to the database query. This approach works in theory, but imagine an attacker changing the query like this: Password = ' OR 'a' = 'a' The query to the database is now: SELECT * FROM
18%
Julia: Fast as Fortran, easy as Python
09.04.2019
Home »  Archive  »  2019  »  Issue 50: Bpfilter  » 
Lead Image © Andrey Suslov, 123RF.com
). Listing 2 Arrays julia> a = [1 2]; 1x2 Array{Int64,2}: 1 2 julia> b = [3 4]; 1x2 Array{Int64,2}: 3 4 julia> [a b] 1x4 Array{Int64,2}: 1 2 3 4 julia> [a; b] 2x2 Array{Int64,2}: 1 2 3 4
18%
Warewulf 4 – Environment Modules
20.03.2023
Home »  HPC  »  Articles  » 
.exe   QUAD_MPI   FORTRAN90/MPI version   Estimate an integral of f(x) from A to B.   f(x) = 50 / (pi * ( 2500 * x * x + 1 ) )     A        =    0.00000       B        =    10.0000       N        =      9999999
18%
ASCII-based monitoring tools
30.05.2021
Home »  Archive  »  2021  »  Issue 63: Autom...  » 
Lead Image © tele52, 123RF.com
A long time ago, I was a system administrator for a couple of HPC systems, but I also inherited two Hewlett-Packard (HP) N-class servers (mainframes). Along with two WORM storage units, these were

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