17-Mar-00D.P.Kelsey, HTASC report1 HTASC - Report to HEP-CCC David Kelsey, RAL rl.ac.uk 17 March 2000, CERN (

17-Mar-00D.P.Kelsey, HTASC report2 HTASC #14 9th/10th March 2000, CERN Agenda included: HTASC sub-groups –Security Group –HEPNT/Windows 2000 Group Experiences of ‘OO’ programming (revisited) CERN’s CLASP project Directories/LDAP in HEP Future meetings/topics

17-Mar-00D.P.Kelsey, HTASC report3 Membership of HTASC Members wishing to be replaced –E. Auge (France) - currently Secretary of HTASC –C. Declercq (Belgium) 7 countries (+CERN) at meeting #14 (March 2000) Several apologies at last moment, e.g.GRID meetings! Perhaps substitutes should be arranged, if possible. Any help from HEP-CCC encouraging members to attend would be welcome! We need to appoint a new Secretary this summer.

17-Mar-00D.P.Kelsey, HTASC report4 HTASC sub-groups Security group (Tobias Haas) –reported to HEP-CCC (Nov 99) –action on HTASC to collect list of HEP security contacts this has started - Tobias Haas will coordinate, with help from HTASC members Windows 2000 Coordination group –this was proposed at last HEP-CCC meeting (Nov 99) –Christian Trachimow (DESY) has agreed to chair this –First meeting will take place at DESY on 30/31 March just before the HEPiX/HEPNT meeting in Braunschweig (3-6 April)

17-Mar-00D.P.Kelsey, HTASC report5 Experiences of Object Oriented programming In Oct 99: Neil Geddes (RAL/BaBar) This meeting: Federico Carminati (CERN/ALICE) see slides see slides Discussion/Conclusions –No doubts remain about OO - it is successful! –too early to tell whether OO helps maintenance –An infrastructure (people and tools) is needed to support the core developers and users –Jury is still out on ‘Persistency’ –ALICE users like the ROOT framework Federico stressed the importance of ‘users’ specifying their requirements

17-Mar-00D.P.Kelsey, HTASC report6 ‘OO’ Training Conclusions (repeated from Nov 99) Training is essential in OO design for the core software team needs to be within experiment’s environment and at the right time. Also needs to continue. –abstract training is of much less use HTASC members reported lack of funds - ideally to be chanelled through the experiments there is a lack of suitably qualified trainers Three levels of training for users general introduction ‘hands on’ - use of experiment’s applications new people need colleagues to ‘hand hold’ (mentoring)

17-Mar-00D.P.Kelsey, HTASC report7 CLASP project Denise Heagerty (CERN) - see slidessee slides Common Login and Access rights across Services Plan Discussion/Conclusions –a very interesting project - to be encouraged. –technologies (Kerberos 5, LDAP, PKI) being studied are all important for GRIDs –HTASC agreed to inform Denise of others working in this area and to provide lists of outside users prepared to review the impact.

17-Mar-00D.P.Kelsey, HTASC report8 Directories/LDAP Background –several interesting presentations at April 99 and Oct 99 HEPiX/HEPNT meetings –Windows 2000/Active Directory uses LDAP –Invited the active people to HTASC See slides from 4 talks –Why and How LDAP in HEP? (Michel Jouvin, IN2P3)Why and How LDAP in HEP? –IN2P3 Directory Services (Helene Jamet, IN2P3)IN2P3 Directory Services –CERN LDAP project (Ray Jackson, CERN)CERN LDAP project –Groupware issues/LDAP (Arnaud Taddei, CERN)Groupware issues/LDAP

17-Mar-00D.P.Kelsey, HTASC report9 Directories/LDAP (2) Discussion/Conclusions –Directories/LDAP are becoming very important - Windows 2000, GRIDs, common access rights (e-groups), etc. –HTASC was impressed by the work done and recommends that more countries/institutes should be included. –must not make the problem too broad, but move quickly HTASC recommendation –The IN2P3/CERN people should be encouraged to set up a meeting in Europe to expand the White Pages LDAP service to more sites. (They complain of lack of time/funds to meet) –After this has happened, we should consider the need for a longer term LDAP coordination group.

17-Mar-00D.P.Kelsey, HTASC report10 Future HTASC meetings/Topics (provisional dates/plans) 8/9 June 2000 (not CERN - a Regional Centre - tbc) –Issues for Regional Centres (GRIDs?) –First report/plans from Windows 2000 coordination sub-group 19/20 October 2000 (CERN) –Markup Languages –revisit LDAP? –revisit network security? March 2001 (CERN) –Networking/Diffserv/QoS Other possible topics?: –Certificates/PKI/Digital signatures –ideas always welcome!

17-Mar-00D.P.Kelsey, HTASC report11 Format of web documents The HTASC web needs a cleanup –job for the new secretary! HTASC discussed the format of web copies of documents and presentations –strong feelings! –should avoid using only ‘closed’ formats (e.g.MS Office) –As a ‘coordinating’ body we should lead the way! –Presentations should be easy to print. –Our suggestion is to always include a PDF version (postscript not so easy to handle) We ask HEP-CCC to consider same for its web

17-Mar-00D.P.Kelsey, HTASC report12 Summary HTASC invites HEP-CCC to –facilitate an HEP LDAP meeting - to take place soon. Provide travel funds and support –help encourage HTASC membership/participation –consider including PDF format documents on its web-site –suggest future topics for HTASC consideration