NOTE: You must be on the UB or Roswell Park networks to connect to most CCR servers. If you are off-campus, please use the UB VPN to connect
Access to most CCR servers is only available through SSH or the OnDemand portal. If you do not use the OnDemand portal, you must install a SSH client on your computer. CCR recommends the MobaXterm program for command line and file transfer access and FileZilla for file transfers.
CCR OnDemand is an easy to use web-based portal that provides users access to CCR's HPC resources without the need to install additional client software or web-plugins. Users can transfer files, access a shell environment on the cluster front-end login server, launch interactive, and remote visualization sessions, and monitor jobs.
Command line SSH client:
Windows users can download PuTTY or MobaXTerm for command-line access to the CCR servers. For graphics rendering with putty, use in conjunction with Xming. Instructions for connecting using a PuTTY and Xming combination are available here (Note: use the connection information below in lieu of "ctm.geo.mtu.edu" in the example). To check that the PuTTY/Xming combination is working correctly: launch a putty terminal after separately launching xming as a background task. Now type "xclock" from the putty terminal. If you get a display error, it's not working. If a clock pops up then you know it's working properly.
MobXTerm does not require additional software for graphics rendering and it is, therefore, recommended over PuTTY.
vortex.ccr.buffalo.edu (academic, faculty, and industry cluster front end login nodes)
NOTE: this will log you into one of a pool of nodes: vortex1.ccr.buffalo.edu, vortex2.ccr.buffalo.edu)
transfer.ccr.buffalo.edu (for uploading/downloading data to/from CCR filesystems only)
port (specify in FileZilla):
SSH key: You will need to point to the location of your SSH private key (see session setup below)
Check the box next to 'X11-Forwarding' in the session setup if you need to display graphics
Users can use the OnDemand Files app or a GUI-based file transfer app such as FileZilla, WinSCP or Cyberduck. All provide a secure file transfer using a drag and drop interface.
- Download and install FileZilla or WinSCP or Cyberduck
- See connection information above
- We provide docs on using SSH keys with FileZilla here. Other documentation for using SSH keys is available from these software vendors on their sites - WinSCP can be found here and Cyberduck here
For large files or large amounts of data to transfer:
Please use the data transfer server: transfer.ccr.buffalo.edu
For the fastest transfer speeds, do not connect to the UB VPN before connecting to the transfer server
NOTE: The data transfer server is not to be used for compiling code or submitting jobs to the cluster. If you have modules sourced in your login files, you will get an error message when you login as modules are not supported on the data transfer server.
CCR also offers a Globus endpoint. Globus allows you to transfer your large data very fast and in a very secure way. To learn how to get started with Globus, please view the following articles: