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2005-5-18IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 1 JVO use of Globus Toolkit Masahiro Tanaka (NAOJ)

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Presentation on theme: "2005-5-18IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 1 JVO use of Globus Toolkit Masahiro Tanaka (NAOJ)"— Presentation transcript:

1 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 1 JVO use of Globus Toolkit Masahiro Tanaka (NAOJ)

2 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 2 Development of JVO prototypes Prototype 1 –Globus toolkit ver. 2 Prototype 2 –Globus toolkit ver. 3 Prototype 3 –Web Service

3 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 3 JVO Prototype 1 Registry Server Metadata Data Servers DB … Web access Portal Server Controller User Interface Data Servers DB Globus Toolkit 2 User UDDI

4 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 4 Use of Globus toolkit 2 Remote Execution –GRAM (Globus Resource Allocation Manager) globus-job-run command File Transfer –GridFTP

5 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 5 Problem in using Globus toolkit 2 Very slow –One query took > 10 min Why?: in GRAM: –Polling interval is hard-coded as 30 sec! –Reduced by modifying source codes. --- globus_gram_job_manager_script.c.bak Wed Feb 5 07:41: globus_gram_job_manager_script.c Mon Apr 21 14:23: ,7 +374,7 globus_gram_job_manager_request_log(request, "JMI: in globus_gram_job_manager_submit()\n" ); - request->poll_frequency = 30; + request->poll_frequency = 3; /* * create a file that will be used to pass all parameters to and

6 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 6 JVO Prototype 2 Registry Server Metadata Data Servers DB … Web access Portal Server Controller User Interface Data Servers DB Globus Toolkit 3 User

7 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 7 Use of Globus toolkit 3 Remote Execution –Grid Service Polling latency was eliminated. Performance was improved. File Transfer –RFT (Reliable File Transfer) Recoverable GridFTP

8 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 8 User Management Portal login ID Globus global ID OS local account User grid-mapfile Own user management Multiple User Management; Utilize one or both? Single Grid account

9 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 9 Still use Globus toolkit? Prototype 1&2 did not always make good use of Globus toolkit security features. Moreover, Globus toolkit was unstable. –Troubles in development Prototype 3 is based on Web Service.

10 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 10 JVO Prototype 3 Registry Server Metadata Data Servers DB … Web access Portal Server Controller User Interface Data Servers DB User Web Service User management using LDAP

11 IVOA Interoperablity meeting KyotoMasahiro Tanaka (NAOJ) 11 Summary Globus security features did not always fit to JVO use. So the latest version of JVO employs Web Service.


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