Minutes of the offline meeting held on 13 April 1999

Present: P.Mato,  T.Cass, M.Cattaneo, M.Franck, J.Closier, F.Loverre, 
              M.Alemi, G.Gracia, N.Neufeld, F.Ranjard

Apologies:  J.Harvey, E.van Herwijnen

Minutes : Florence Ranjard

      1.  CMT on the Web and related questions (F.Ranjard).

• CMT is configured by the $GROUP_DIR/group_login.csh which makes
  • source $LHCBHOME/scripts/CMT.csh
• When you open a new window with:
  • group menu buttom
  • xrsh rsplus (or hpplus)

  you need a $HOME/.rhosts file with one line:  + username

  === >  the following environment variables should be set:
             CMTROOT, CMTCONFIG, CMTPATH

• On the Web the documentation is accessible from the HELP buttom on the header page and
  through the following links:
  computing ==> software support ==> CMT
• The documentation is in developement and needs user feedback to be improved..

2. First experiences with CORBA (N.Neufeld)

Niko wanted to prepare a ring display for the RICH reconstruction/simulation program
using Java 2D toolkit:

• The RICH reconstruction program is in C++
• The display program is in Java.

How to make these 2 programs talk to each other (ppt)

• Link together Java and C++ : difficult, huge executable.
• Use a TCP socket : elegant but only primitive data types and you have to provide the protocol
• CORBA: a standard, Java and C++ fully supported, free implementation.
  ===> you have to write IDL for all objects you want to display
• CORBA works very nice, it is a high way of communication and one gets distribution, client-server
  almost multi language for free.

   ================

    next meetings     Tuesday 20 April
                             Tuesday 27 April   - First ideas on analysis packing in Gaudi framework (G.Corti)