CCS systems support multiple file transfer programs such as FileZilla and
PSFTP, and common command line utilities such as
Use cluster head nodes (login nodes) for these types of file transfers.
For transferring large amounts of data from systems outside the
University of Miami, CCS ACS also offers a gateway server that supports
SFTP and Globus.
Using command line utilities¶
cp to copy files within the same computation system. Use
rsync to transfer files between computational
systems (e.g., scratch space to Visx project space). When executing
multiple instantiations of command line utilities like rsync and scp,
please *limit your transfers to no more than 2-3 processes at a
An example transfer might look like this:
[localmachine: ~]$ scp /local/filename \ email@example.com:/scratch/projectID/directory
To transfer a directory, use the
-r flag (recursive):
[localmachine: ~]$ scp -r /local/directory \ firstname.lastname@example.org:/scratch/projectID/directory
Consult the Linux man pages for more information on scp.
The rsync command is another way to keep data current. In contrast to scp, rsync transfers only the changed parts of a file (instead of transferring the entire file). Hence, this selective method of data transfer can be much more efficient than scp. The following example demonstrates usage of the rsync command for transferring a file named “firstExample.c” from the current location to a location on Pegasus.
[localmachine: ~]$ rsync firstExample.c \ email@example.com:/scratch/projectID/directory
An entire directory can be transferred from source to destination by
using rsync. For directory transfers, the options
transfer the files recursively (
-r option) along with the
modification times (
-t option) and in the archive mode (
option). Consult the Linux man pages for more information on rsync.
FileZilla is a free, user friendly, open source, cross-platform FTP, SFTP and FTPS application.
Download the FileZilla client here: https://filezilla-project.org/download.php?show_all=1 and follow the installation instructions for the appropriate platform (http://wiki.filezilla-project.org/Client_Installation).
Launch FileZilla and open File : Site Manager.
Click the “New Site” button and name the entry. Pegasus example:
Host: pegasus.ccs.miami.edu or triton.ccs.miami.edu Protocol: SFTP Logon Type: Normal enter your username and password
Selecting Logon Type: Ask for password will prompt for a password each connection.
Click the “Connect” button. Once connected, drag and drop files or directories between your local machine and the server.
Using the gateway server¶
To transfer large amounts of data from systems outside the University of Miami, use the gateway server. This server supports SFTP file transfers. Users *must be a member of a project* to request access to the gateway server. E-mail firstname.lastname@example.org to request access.
Host: xfer.ccs.miami.edu protocol: SFTP user: caneid pw: [UM caneid passwd] Folder: download/<projectname>
Open an SFTP session to the gateway server using your CCS account
[localmachine: ~]$ sftp email@example.com sftp> cd download sftp> mkdir <project> sftp> cd project sftp> put newfile