1. OMII evaluation: Preliminary results Current status of T6
OMII evaluation: Preliminary results Current status of T6.2 Subtask: OGSA/Globus evaluation for data intensive applications
coordinator: A. Demichev (SINP MSU),
V. Pose (JINR),
V. Galaktionov (JINR),
in collab. with KIAM RAS
CERN-INTAS meeting, 14 March 2005, CERN

2. Subtask T6.2: OGSA/Globus evaluation for data intensive applications
Based on the experience with OGSA/GT3 evaluation in (T. Chen et al. “OGSA Globus Tolkit Evaluation Activity at CERN”, in Proc. of ACAT03, NIMA 534 (2004) 80)
Release of the Globus Toolkit 4 is currently scheduled for April 29, 2005
www-unix.globus.org/toolkit/docs/development/4.0-drafts/GT4Facts
Therefore: testing/evaluation of other OGSA/WS systems potentially interesting for LCG/EGEE
CERN-INTAS meeting, 14 March 2005, CERN

3. Subtask T6.2: OGSA/Globus evaluation for data intensive applications (2)
Testing of gLite components:
Fireman (file + replica) and Metadata catalogs (V.Pose)
Workload Management System (V.Galaktionov)
IO-server (A.Demichev)
The work was carried out in framework of the ARDA Team (partially supported by the INTAS-CERN project) and in close collaboration with EGEE JRA1 Team
CERN-INTAS meeting, 14 March 2005, CERN

4. Subtask T6.2: OGSA/Globus evaluation for data intensive applications (3): OMII testing/evaluation
Testing/evaluation of OMII distribution of grid (WS- based) infrastructure ( is interesting from the point of view of potential use of some its components for future LCG/EGEE MW
By now - two milestones of the plan coordinated with ARDA and JRA1:
Tests to prove correct installation and basic functionality
Performance, scalability and robustness tests
CERN-INTAS meeting, 14 March 2005, CERN

5. Subtask 6.2: OGSA/Globus evaluation for data intensive applications (4): Tests to prove OMII correct installation
Successful:
general installation;
running test scripts (available in OMII dist.);
Tightly bounded to SuSE 9.0 (attempts to install on SuSE 9.2 failed; problems even with SuSE 9.0 updates)
Some problems (Tomcat & Postgresql DB mngt; Windows client conf.) were detected and fixed with the help of OMII support service
CERN-INTAS meeting, 14 March 2005, CERN

6. Subtask 6.2:OGSA/Globus evaluation… (5): Testing the OMII basic functionality
Applications must be pre-installed on the (Job Service) server; an execution of programs prepared on client side is impossible.
No such core services like RB, IS, RC
Management of (grid) accounts is not well scalable, not well suitable for management of large dynamic VOs
Clients must be installed for each user separately (e.g., not under root)
Failed to deploy a new custom service into the OMII container
Report was submitted to JRA1 and OMII Support
CERN-INTAS meeting, 14 March 2005, CERN

7. Subtask 6.2: OGSA/Globus evaluation for data intensive applications (6): Performance, scalability and robustness tests (
The OMII Job service was found to be robust in a test with 20 concurrent clients
The maximal job submission rate ~ 6 jobs/min
no bulk batch mode for job submission --> problem for submitting large number of jobs
The Data Service was found to work stable with up to 5 concurrent clients and a file size of up to 10MB (no tests beyond this limits yet).
CERN-INTAS meeting, 14 March 2005, CERN

8. Subtask T6.2: OGSA/Globus evaluation for data intensive applications (7): Security issues
currently not supported:
certificates with 4096 bit CA public key (e.g., from Russian CA valid for LCG/EGEE); 2048 bit is supported
proxy certificates
passwords for the Keystore (used to store the certificates) and for private keys of the certificate are stored as a clear text in a text file.
CERN-INTAS meeting, 14 March 2005, CERN

9. Subtask T6.2: OGSA/Globus evaluation for data intensive applications (8): Current work and future plans:
Further testing OMII MW
Studying GT4Beta;
Developing/discussing plans for GT4 testing and evaluation
Waiting for GT4 release...
CERN-INTAS meeting, 14 March 2005, CERN