Linux: an accelerator to download

There is a good small software in Linux to download by http/ftp. It is called as axel.

It is a XunLei-like tool. Enjoy!

Software: root: tmva: how to install it...

TMVA is a Toolkit for Multivariate Data Analysis with ROOT.
web page: http://tmva.sourceforge.net/
After compiling and before running your code/macros, please make sure your lib is loaded!

Software:programming: how to use auto-complete in xemacs

If you are programming, it will be very convenient to ask your editor to auto-complete words for you! Time-saving! In xemacs (I didn't try it in emacs), you could use shortcut: alt+/

D0:software:network: my laptop is blocked

Fnal has a network policy, and my laptop is blocked since I open X window without certificates. The method to solve it is to import certificate to my browser. Follow the instruction on the given link. but I don't have kx509 installed. I cannot find any on network (since links are dead), so I find there is kx509 installed and copy it and its corresponding libs to my local laptop. and run the script get-cert.sh with -i, works.

D0:MET: how to get access to right MET

In D0 framework, MET issue is very tricky. I am sick of how to get access to it and always spent lots of time on it. Here, I would try my best to clarify it:

- MET has several components: CH, JES, MU, Bad Jets. Based on your study, you could choose different configuration, usually, we use:

CH+JES+EM+MU

-However, for JES, we have corrJet, corrmuJet, smear_corrJet, smear_corrmuJET etc, here Jet is JCCA or JCCB. For MU, we have MU or CALOMU.

- But a point making things more complicated is: in JES, sometime we apply muon correction which may be counted later in MET, in order to avoid double contributions from muon correction, we should keep in mind it!!