Minutes SLAC-ALTAS TDAQ Meeting 10-Aug-2006
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Present: Stephen (phone), Sarah, Steffen, Amedeo, Su Dong, Rainer


Stephen:

Just released version DetCommon 0.0.1, now with AtlasCore 2.0.2, will
be part of release 12.0.2, which is being built now.  Preparing to
install at remote sites, including Point 1.  Located the person to
actually do this (Emile?).  All Java issues from last week fixed by
someone.  There is a question about classification of dual-use,
expecting some feedback on this through HN.

Next: see that DetCommon will be built automatically.  Talk to package
coordinators to get some test applications that can run in the nightly
every time.  Sort out some loose ends.


Sarah:

RunControl problems from last week are fixed.  Now have the ability to
use IPC in DbProxy.  Essentially the functionality is there.  Sorting
out the best way to use the interface, i.e. which functions to
implement.  Looking at ERS now.  Believe that the switch will be
straight-forward, even for the exception handling.


Amedeo:

By Monday morning expect to have all IPC and ERS and will have the
proxy committed to CVS.  Main concern now is what to do with Oracle.
Right now DbProxy implements the MySQL protocol.  Not clear if
CORAL/COOL provide a server-side interface at all.  (Should find out
for next week.)  It doesn't seem the right solution to
reverse-engineer the Oracle protocol.  Everything but this is under
control.  Suggest to give feedback in the talk on Monday stating that
DbProxy would have a strong preference for running against MySQL at
Point 1.  Authentication already is version dependent.  It's the only
part that depends on MySQL shared lib, because of the password
scrambling.  There is the option of a "translator" on the server side,
using the Oracle (or other) client API for reading, plus the known
MySQL server interface for writing on the DbProxy side.  This would
make the unit of translator+DbProxy+HLT technology indendepenent to
the outside.  This may be the best compromise.  The other obvious
option is to require a MySQL server or replica, but that may conflict
with other demands.


Steffen:

As announced, 4 machines installed with SL4 (bbt-dev100,1,2,3).  Gbit
ethernet interconnect.  Feedback welcome!  Will move these to IR2 some
time in the down (~September).  Amedeo might use them, after DbProxy
is committed, to redo bandwitdth test that were previously done with
100 Mbit.


Su Dong:

Plan to jump-start the Tier-2: See what can be done before the Tier-2
hardware will show up in December. Borrowing O(10) TB of disk from
BaBar should already make for a workable setup, Could probably use
SLAC central machines, but will have to clarify all the particulars.
Goal is the October Physics Jamboree at LBNL.  Want to get
participants to sign up ahead of time for getting SLAC user accounts.
Environment has to be prepared, and use rehearsed by ourselves.  There
is also the issue about running parallel releases.  Stephen will try
to research this for next week.


Next week: After the reports, will come back to discussing the EF
projects suggested by Andrea for SLAC involvment and try to make a
pick.


As always, post corrections/comments as a follow up.