NICS has taken delivery of a new Cray XT5. The new machine, which replaces the Cray XT4, will be called by the same name, 'Kraken'. The new Kraken XT5 will be available starting Monday February 2. Over the next two months, until March 30, both machines will be available to facilitate the transition from the XT4 to the XT5.
Do NOT run executables which had been compiled on the XT4 on the XT5. This may cause serious system problems. It should be possible to transfer the source and use the same make procedure.
Currently, to access Kraken XT4 using OTP authentication, SSH to kraken, for example:
ssh kraken.nics.tennessee.edu
To use password authentication, replace kraken with kraken-pwd. These names will continue to connect to Kraken XT4 until March 2, after which the names will connect to Kraken XT5.
During the transition period (February 2 – March 30), each system may also be reached unambiguously. To connect to the XT5, SSH to kraken-xt5, to connect to the XT4, SSH to kraken-xt4. To use password authentication, simply append -pwd to the machine name. For example, the following connects to the new XT5 using password authentication.
ssh kraken-xt5-pwd.nics.tennessee.edu
