New Development Efforts in GridFTP Raj Kettimuthu Math & Computer Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A.

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Presentation transcript:

New Development Efforts in GridFTP Raj Kettimuthu Math & Computer Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A.

New Features l Pipelining the file transfer u Better throughput for lots of small files transfer l Alternate security mechanisms u GridFTP over SSH u Add functionality to globus-url-copy and globus- gridftp-server allowing the control channel connection to be formed with an ssh session. u No proxies, certs, or CAs are needed for a secure control channel. u If you can ssh to the host, you can establish a secure GridFTP session.

Pipelining

Network Protocol Configurable Protocol Stack Application Disk Network Protocol Special Device Globus XIO Driver

GridFTP over UDT Easy way to write XIO Drivers  Create from third party libraries. Blocking API  Thread pooling/event call-backs to morph async to sync  Recommend threaded builds Created an UDT driver

GridFTP over Lightpaths l To minimize changes to the application, this can be implemented as an XIO driver l Users might want to use more aggressive transport protocols like RBUDP, UDT etc l XIO stack used by GridFTP is configurable OSCARS GSI UDT DRAGON RBUDP CHEETAH CTCP

Other New Features l Working with the DRAGON group to create an XIO driver l Data Storage Interface l Several can be available and loaded dynamically via the ERET/ESTO commands l Anything that can implement the interface can be accessed via the GridFTP protocol l We have implemented u POSIX file (used for performance testing) u HPSS (tape system; IBM) u Storage Resource Broker (SRB; SDSC) u NeST (disk space reservation; UWis/Condor)

Data Transfer Process Data Storage Interface Data Processing Module Data Channel Protocol Module Data source or sink Data channel

Data Storage Interface l This is a very powerful abstraction l Several can be available and loaded dynamically via the ERET/ESTO commands l Anything that can implement the interface can be accessed via the GridFTP protocol l We have implemented u POSIX file (used for performance testing) u HPSS (tape system; IBM) u Storage Resource Broker (SRB; SDSC) u NeST (disk space reservation; UWis/Condor)