Each login on the High Performance Computers at TACC has a mirrored login and password on the Origin 2000. Login access is restricted to non-compute intensive commands and can be used for monitoring and managing migrated files through the dmls, dmfind and dmget commands. The operation and policies of DMF are described below. The files are removed from the disk, but their inodes remain in tact, and marked with a migration flag. Any attempt to access a migrated file signals DMF to automatically retrieve the file from the archive.
Any command accessing a migrated file simply waits for the retrieval.
Accessing the File Server Use the hostname archive.hpc.utexas.edu to access the archive server. Your initial password is identical to your charon or lonestar password, as it was found on July 4, 1999. Values are the averages of three trials on a loaded system. Dmfind works like the GNU find command, but also provides DM state and attribute options. More details on these commands can be found in the corresponding man pages on charon and lonestar.