TWIST SOFTWARE MEETING MINUTES
                                                                           October 30, 2001

GEANT
=======

Random number generator

 It was pointed out that changing the default GEANT random number generator
 is not a trivial task and involves a fair amount of work. This is not currently a
 high priority specially that most MC runs to be studied in the near future will
 not have a large number of events.

 Peter will study this problem further and come up with a recommendation.


Analyzing MC files

 The current geometry is not compatible between MC and MOFIA. Konstantin
 is in the process of modifying the MOFIA geometry files to match GEANT.


MOFIA
======

QOD

 o Histogram comparisons are now implemented.

 o KUMAC files for displaying groups of related histograms are are ready.

 o Two directories will be used online. One will be a production directory, and
 the other is a development directory. The development directory QOD
 executable will have a different name.


Pattern Recognition

 o Jim presented results on tests of the efficiency of the first guess code. His
 plots are posted at

 http://stoney.phys.ualberta.ca/Ee614/Projects/E614SOFTWARE/00136/index.html

 o The next step is to understand why some tracks fail first guess.


MOFIA 2.2

 o A new version of MOFIA needs to be tagged. For this Jim needs to commit his
 new first guess code and Art needs to fix a bug that results in a zebra dump. Also
 the geometry implementation is needed from Konstantin.


November run

 o The run will start with straight tracks for about 10 days. The magnet will then be
 turned on.

 o The map file is ready but needs testing particularly for the downstream half. The
 geometry code that Konstantin is working on is required for that test.


COMPUTING ISSUES
=================

Tape drives

 o Renee is comparing costs between the old DLT drives and the new (super) DLT
 drives.

 o The super DLT drives can read tapes written with regular DLT drives.


ABSOFT

 o A new absoft compiler is out. However, it was agreed that we will not switch to the
 new version of the compiler until at least January to avioid interruptions to the present
 run and analyses which may result from compiler bugs or incompatibilities. This is
 a major version of the ABSOFT compiler and is not free. Institutions that might need
 an ABSOFT compiler in the meantime should buy the old version.


RedHat

 o A new version of RedHat (7.2) is out. It was also agreed that no updates will be done
 until at least January.


TWIST cluster

 o SAM is suffering from bad disk sectors. It will have to be halted soon to investigated
 the problem.


Disk Space

 o Some files on disk will have to be deleted. Andrei will send out a message inquiring
 which runs are needed to remain on disk.


--
==================================================================
   Maher Quraan                            TRIUMF
   TRIUMF TWIST Collaboration              http://www.triumf.ca
   email: quraan@triumf.ca                 4004 Wesbrook Mall
   phone: (604)222-1047 ext. 6333          Vancouver, BC
   fax:   (604)222-1074                    Canada V6T 2A3

                http://www.msf.ca/refugeecamp/

==================================================================

Created for the The Center for Subatomic Research E614 Project Projects Page.

Created by The CoCoBoard.