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29%
Modern Fortran – Part 3
25.01.2017
Home »  HPC  »  Articles  » 
) :: a[*]    ! Array coarray   real, dimension(n), codimension[*] :: a   ! Array coarray   integer :: cx[10,10,*]   ! scalar coarray with corank of 3   ! Array coarray with corank of 3 with different cobounds real :: c(m,n) :: [0 ... Modern Fortran – Part 3
29%
HPC Monitoring: What Should You Monitor?
15.01.2014
Home »  HPC  »  Articles  » 
days, then you might be able to capture data about whether a node is alive or dead infrequently, perhaps every 5-15 minutes, or even longer if you like. Checking it once every 3 seconds seems a bit like
29%
Static code analysis finds avoidable errors
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Lead Image © Andrey KOTKO, 123RF.com
); 19 printf("source: %s\ntarget: %s\n",source,target); 20 return 0; 21 } Figure 3: Splint warns the programmer of a likely out
29%
News for Admins
30.11.2020
Home »  Archive  »  2020  »  Issue 60: Secur...  » 
 
-A ports, one USB 3.2 Type-C, two RJ-45 LAN ports, five audio jacks, built-in Intel® Wireless-AC (a/b/g/n/ac/ax), and Bluetooth 5.0. To accommodate such power, System76 had to put serious work ... In the news: Red Hat Enterprise Linux 8.3 Available, It's Official – Linux 5.10 is the Next LTS Kernel, System76 Unleashes World's Smallest Quad-GPU Workstation, Canonical Releases Autonomous
29%
Thrashing the data cache for fun and profit
05.12.2019
Home »  Archive  »  2019  »  Issue 54: NVMe...  » 
Lead Image © Lucy Baldwin, 123RF.com
program text is being retrieved from slower caches, or even from (gosh!) RAM [2] [3]. Now the time has come to turn your attention to the data cache: Where large enough datasets are involved, spatial
29%
Live Kernel Update Tools
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
Lead Image © Andrea, Fotolia.com
to be equivalent in terms of functionality: Kpatch [2] and kGraft [3]. Technically, the two approaches have major differences with widely divergent functionality. Perhaps this divergence is why Red Hat and SUSE
29%
Udev with virtual machines
14.11.2013
Home »  Archive  »  2013  »  Issue 17: Cloud...  » 
Lead Image © orangeline, 123RF.com
kernel ordinal number (%n). Listing 3 70-persistent-net.rules Rules for KVM: SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="52:54:00:*", KERNEL=="eth*", NAME="eth%n" Rules
29%
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
29%
I/O Profiling at the Block Level
27.08.2014
Home »  HPC  »  Articles  » 
files in ext3/ext4 filesystems Zipf theta - Estimate of Zipfian distribution theta Ioprof is written in Perl and is fairly easy to run, but it has to be run as root (or with root privileges
29%
Using a Bash script to mirror external monitors
10.06.2015
Home »  Archive  »  2015  »  Issue 27: Fault...  » 
Lead Image © bowie15, 123RF.com
(xrandr) "provides automatic discovery of modes (resolutions, refresh rates, …) [and] the ability to configure output dynamically (resize, rotate, move, …)" [3]. The xrandr configuration tool lets me

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