Private PostDST production on central nodes
Following the demand of the users the Short and Long DST processing
facilities has been installed on a public area to make possible the
private production of simulated events on some central computers. The
general production on the Delphi FARM is done on Alpha/OSF stations
and by consequence the private production is set up on the Delshift
Alpha OSF nodes only for full compatability. The migration to other
platforms needs more detailed studies.
All necessary files and tools are installed under the AFS so to be
accessible to all users at CERN and at outside laboratories. For each
production year and version there is a separate directory, e.g.
etc. and some more are added for the new reprocessings.
In these directories you will find the bare minimum for the private
- executables (shortdst.exe, longdst.exe or xshortdst.exe);
- description files (shortdst.des, longdst.des or xshortdst.des) to
define the output data structure;
- ASCII data files (calibration, alignement etc.) necessary to run
the executables (corresponding to the usual $DELPHI_DAT area);
- simple scripts (runsdst, runldst or runxsdst) to run your jobs;
The executables are built up on the FARM in a Delshift-like envi-
ronment and copied to the AFS directories. No PAM files or libraries
are available there.
Users who would like to look at the code of different production
versions or recreate the libraries and executables on other platforms
could find and copy the PAM's and cradles on the Delphi software
server with the usual "ftp" tools :
Name (delsoft.cern.ch:username): anonymous
Guest login ok, send your complete e-mail address as password.
ftp> cd pub/short_prod/97a1/src/car/
and transfer the files.
Before running private production jobs the user should set up the
environment in the following way :
- log on a central node (HPPLUS is the recomended one);
- issue the command "crypttok" and answer the questions to make
known to the node your AFS password. This procedure should be re-
peated when your AFS password changes;
- establish a default shift machine of the type ALPHA OSF as on the
Delphi FARM to run the job issuing the command "qset -h shift27";
- copy the runsdst or runldst scripts ( for short or long DST res-
pectively ) for the production version you would like to run and
change it indicating to the PDL file which is inside it your in-
put and output tapes/files;
- submit your batch job in the special very long queue "prio", e.g.
using the command "qsub -q prio -eo runsdst". The right to run in
the queue should be previously demanded to the PostDST production
The output of the private postDST production should be written only
on user's multifile DLT tapes EExxxx or scratch areas. All information
about this data and their contents is under the full responsability of
the users or physics teams producing them. No centralized bookkeeping
for these data is considered.
All questions and problems should be reproted directly to the Post
DST production task responsible.
Last update 05 Sep 1997
mail to Tzanko.Spassoff@cern.ch