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56%
Finding and recording memory errors
11.04.2016
Home »  Archive  »  2016  »  Issue 32: Measu...  » 
Lead Image © lightwise, 123RF.com
on disk; if the second bit from the left is flipped from a 0 to a 1 (11011100), the number becomes 220. A simple flip of one bit in a byte can make a drastic difference in its value. Fortunately, ECC memory
55%
Preload Trick
11.05.2021
Home »  HPC  »  Articles  » 
, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192]      A = single( rand(N,N) );    B = single( rand(N,N) );      start = clock();    C = A*B;    elapsedTime = etime(clock(), start);      gFlops = 2*N*N*N / (elapsedTime * 1e+9);      disp(sprintf("N = %4d
55%
Listing 4
21.08.2012
Home »  HPC  »  Articles  »  Warewulf 4 Code  » 
 
                                    1/20    Installing : freetype-2.3.11-6.el6_2.9.i686                                                  2/20    Installing : fontconfig-2.8.0-3.el6.i686
55%
Listing 5
21.08.2012
Home »  HPC  »  Articles  »  Warewulf 4 Code  » 
 
.1 M Total download size: 3.9 M Installed size: 18 M Is this ok [y/N]: y Downloading Packages: (1/4): php-5.3.3-14.el6_3.x86_64.rpm                                    | 1.1 MB     00:00 (2/4): php-cli-5.3.3
55%
Rethinking RAID (on Linux)
16.03.2021
Home »  HPC  »  Articles  » 
, ioengine=libaio, iodepth=32 fio-3.12 Starting 1 process Jobs: 1 (f=1) test: (groupid=0, jobs=1): err= 0: pid=5872: Sat Jan  9 16:35:08 2021   read: IOPS=251k, BW=979MiB/s (1026MB/s)(2045MiB/2089msec
55%
Hunt down vulnerabilities with the Metasploit pen-testing tool
28.11.2021
Home »  Archive  »  2021  »  Issue 66: Inci...  » 
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to 192.168.122.236. Escape character is '^]'. 220 (vsFTPd 2.3.4) user mfeilner:) 331 Please specify the password. ^] telnet> quit Connection closed. [mfeilner@parrot][~] $ telnet 192
54%
Tips and Tricks for Containers
12.05.2020
Home »  HPC  »  Articles  » 
           TAG                            IMAGE ID            CREATED             SIZE cuda                 10.1-base-ubuntu19.04-octave   b01ee7a9eb2d        47 seconds ago      873MB nvidia/cuda          10.1-base-ubuntu18.04          3b55548ae91f        4 months ago        106MB hello
54%
I/O Profiling at the Block Level
27.08.2014
Home »  HPC  »  Articles  » 
record size, (2) sequential read testing with 1MB record size, and (3) random write and read (4KB). In running these tests, I wanted to see what block layer information ioprof revealed. The system I
54%
Monitoring NFS Storage with nfsiostat
12.03.2013
Home »  HPC  »  Articles  » 
is shown in Listing 1. Listing 1: Sample nfsiostat Output Linux 2.6.18-308.16.1.el5.centos.plus (home8) 02/10/2013 _i686_ (1 CPU) 02/10/2013 03:38:48 PM Filesystem: rMB_nor/s wMB
54%
Linux device mapper writecache
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Lead Image © lightwise, 123R.com
Zhao through his summer internship at IBM Research. The dm-cache module was integrated into the Linux kernel tree as of version 3.9. It is an all-purpose caching module and is written and designed to run

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