Integer factorization: http://en.wikipedia.org/wiki/Integer_factorization
In number theory, integer factorization or prime factorization is the decomposition of a composite number into smaller non-trivial divisors, which when multiplied together equal the original integer.
Msieve is a C library implementing a suite of algorithms to factor large integers. It contains an implementation of the SIQS and GNFS algorithms; the latter has helped complete some of the largest public factorizations known
msieve has CUDA supported!!
Continue reading “Collections: Integer factorization” »
I was finding articles/wikis how to emulate an arm linux (armel) on centos/ubuntu, then I found this from MDN: https://developer.mozilla.org/en-US/docs/Developer_Guide/Virtual_ARM_Linux_environment.
This article uses an old release by linaro which based on Ubuntu natty that can no longer be found on http://ports.ubuntu.com.
As Ubuntu says, armel would not be supported, that’s why the latest code name of ubuntu supporting armel is begin with ‘Q’.
I found another server release and a new nano, tried that with similar commands, notes are below:
Continue reading “Virtualized ARM on Ubuntu” »
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I tried to use wget -crmmirroring http://archive.cloudera.com, but 416 Requested Range Not Satisfiable is reported when files have been updated.
The -c uses a range header to perform a partially download especially for incomplete download tasks, but if I want to replace old files with new ones, this is a bad choice.
wget provides an -m/–mirror, as it’s said in the manual, is the shorthand for ‘-r -l inf -N’, which means wget -m/–mirror is enough for mirroring sites.
CNAME: sskaje.name => sskaje.me, *.sskaje.name => sskaje.name
HTTP redirect: http://xxx.sskaje.name/aaa/bbb => http://xxx.sskaje.me/aaa/bbb
rewrite ^(.*) http://sskaje.me$1 redirect;
rewrite ^(.*) http://$domain.sskaje.me$1 redirect;
1 Download Mavericks installer
Download from Mac App Store or anywhere.
The default folder name is ‘Install OS X Mavericks.app‘ not accessible directly from Mac Finder. There’s a DMG file locate at ‘Install OS X Mavericks.app/Contents/SharedSupport/InstallESD.dmg‘, this DMG contains all files we need.
2 Mount DMG directly from Terminal
hdiutil attach Install OS X Mavericks.app/Contents/SharedSupport/InstallESD.dmg
The DMG will be mount at /Volumes/OS X Install ESD/
Continue reading “Create OS X Mavericks Bootable USB Drive from AppStore Release” »