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40%
Modern Fortran for today and tomorrow
17.06.2017
Home »  Archive  »  2017  »  Issue 39: Conta...  » 
Lead Image © homestudio, 123RF.com
type for variable "a" 18 type(my_struct) :: a 19 ! ... 20 write(*,*) "i is ",a%i 21 22 ! Structures (variables) of the the derived type my_struct 23 type(my_struct) :: data 24 type
40%
Desktop Blades (of Glory)
06.05.2024
Home »  HPC  »  Articles  » 
various components, ranging from the small Cluster HAT, to a small Raspberry Pi cluster, to an eight-node x86 stack. In my previous home I had three 20A circuits installed for clusters, I really like great
40%
Comparing startup times of Linux distros in the cloud
27.09.2021
Home »  Archive  »  2021  »  Issue 65: 7 Em...  » 
Lead Image © Lucy Baldwin, 123RF.com
Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 64 bytes from 52.90.56.122: icmp_seq=3 ttl=48 time=40.492 ms [ output truncated ] Welcome to Ubuntu 20.04.1 LTS
39%
MPI Apps with Singularity and Docker
18.03.2020
Home »  HPC  »  Articles  » 
='/home/laytonjb/pgilinux-2019-1910-x86-64.tar.gz', mpi=True)   Stage0 += copy(src='poisson_mpi.f90', dest='/var/tmp/poisson_mpi.f90') Stage0 += shell(commands=['mpif90 /var/tmp/poisson_mpi.f90 -o /usr
39%
Small Tools for Managing HPC
18.10.2017
Home »  HPC  »  Articles  » 
laytonjb@laytonjb-Lenovo-G50-45 ~]$ pgf90 test1.f90 -o test1 [laytonjb@laytonjb-Lenovo-G50-45 ~]$ ldd test1         linux-vdso.so.1 =>  (0x00007fff11dc8000)         libpgf90rtl.so => /opt/pgi/linux86
38%
Network analysis with the Bro Network Security Monitor
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Aleksey Mnogosmyslov, 123RF.com
var/opt/bro/logs Subdirectories ls -l /var/opt/bro/logs/ total 244 drwxr-xr-x. 2 root root 4096 Oct 20 00:00 2014-10-19 drwxr-xr-x. 2 root root 12288 Oct 21 00:00 2014-10-20 drwxr-xr-x. 2 root root
38%
Embarrassingly parallel computation
01.06.2024
Home »  Archive  »  2024  »  Issue 81: Load...  » 
Lead Image © Lucy Baldwin, 123RF.com
fashion when promised double-digit speedups like 10x by a vendor who has yet to see your code. Accomplishing a 10x speedup requires that 90 percent of the execution time be parallelized. The span of your
38%
A first look at Apache 2.4: Web server for the cloud
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Helder Almeida, 123RF.com
for their documentation. Although at times it's a bit terse, it is very complete. The Apache 2.4 release, although a fairly modest bump compared with the move from the 1.x series to 2.0.x, is a pretty important release ... High performance and cloud suitability are the thrust of Apache 2.4. We give you the lowdown on transitioning your Apache HTTP Server from 2.2 to 2.4.
38%
Creating an SFTP jail
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Juan Manuel Ordonez, 123RF.com
SyslogFacility AUTH 20 TCPKeepAlive yes 21 UseDNS no 22 UsePrivilegeSeparation yes 23 Subsystem sftp /usr/local/libexec/sftp-server 24 Match Group sftponly 25 ChrootDirectory /export
37%
HDF5 and Parallel I/O
17.05.2017
Home »  HPC  »  Articles  » 
, ALLOCATABLE, TARGET :: DATA(:,:)   ! Data to write 18      INTEGER :: RANK = 2             ! Dataset rank 19    20      CHARACTER(MPI_MAX_PROCESSOR_NAME) HOSTNAME 21      CHARACTER(LEN=100) :: FILENAME  ! File name 22      CHARACTER(LEN=3) :: C

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