Hi, We have configured and installed a Linux CentOS 6.4 server and installed GridFTP 5.2.4 RPM's available from the Globus repository. A GridFTP client is installed on another Linux server on the local subnet. The authentication and data transfer between the client and server is successful, but there is no acceleration in speed through gridFTP .
1)When transferring over the TCP protocol, the speed with normal ftp and GridFTP are same in spite of using options like the TCP buffer stream and parallel streams and other switches such as "-fast". We are not able to understand why we don't achieve a speed-up in transfer speeds using GridFTP. 2)We configured GridFTP to transfer data over UDT by (i) running the GridFTP server from xinetd, added '-dc-whitelist udt,gsi,tcp' to 'server_args' in /etc/xinetd.d/gridftp. We also threaded the GridFTP server by adding the following variable to the /etc/gridftp.conf file '$GLOBUS_THREAD_MODEL=pthread' The data transfer was then performed using the following command : globus-url-copy -vb -r -udt -cd gsiftp://192.168.12.10:2811/valid/path/to/data/ file:///tmp/data/ However, this returned the following error: +++++++++++++ error: globus_ftp_client: the server responded with an error 500 500-Command failed : globus_i_gfs_data.c:globus_i_gfs_data_request_command:3981: 500-Setting data channel driver stack failed. 500-globus_xio_attr.c:globus_xio_driver_list_from_string:329: 500-Bad parameter, udt driver not whitelisted 500 End. +++++++++++++ Is there a configuration that we missed for using UDT? Regards Saurabh Barve =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you
