CCMS

Center for Computational Materials Science
Institute for Materials Research,
Tohoku University

How to Login

  1. Node name of the supercomputing system in CCMS
  2. Register SSH Public Key
  3. Windows
  4. Mac or Linux

Node name of the supercomputing system in CCMS

Destinatin host Node type Node name
SSH server SSH server cms-ssh.sc.imr.tohoku.ac.jp
Large-scale Parallel Computing Server
Cray XC50-LC
Front end node super.sc.imr.tohoku.ac.jp
Accelerator Server
Cray CS-Storm
Front end node gpu.sc.imr.tohoku.ac.jp
Visualization Server TSS node vis.sc.imr.tohoku.ac.jp

Register SSH Public Key

If you are connected to supercomputer for the first time, generate a pair of public and private keys using public key registration system. The private key will be sent to your email address.

Windows PC

How to Login using Tera Term

  1. Start Tera Term.
  2. Put "cms-ssh.sc.imr.tohoku.ac.jp" and click "OK" button.
    TeraTerm_window1
  3. Put your UserID(example:user01) and your passphrase. Put the location of your private key int "Private key file:" and check "Use RSA/DSA/ECDSA/ED25519 key to log in", then clock "OK" button.
    TeraTerm_window2
  4. Login is successful when the prompt appears shown. TeraTerm_windows3
  5. Log in by entering the user ID and destination host in the ssh command.
    (example:ssh super.sc.imr.tohoku.ac.jp)
    If you have not logged in our system yet, please enter the initial password which was sent by mail. Otherwise, enter the password which was set by yourself. If the prompt is displayed, the login is successful. TeraTerm_window4
    Please change your initial password at first log-in to our system, according to the following policies:
    (1) Minimum password length is 10.
    (2) Use one or more lower-case letters.
    (3) Use one or more upper-case letters.
    (4) Use one or more numerical digits.
    (5) Use one or more special characters (Non-alphanumeric), such as !, #, $.
    Terminal window will close immediately after you change the password. Please login again with your new password.

Mac or Linux

(1) Configuration SSH keys

Generate a pair of public and private keys using SSH public key registration system. The private key will be sent to your email address so copy it to ~/.ssh.

(2) modify ssh config file

Create the ~/.ssh/config and edit as follows.
Replace username with your User ID and replace ~/.ssh/keys/id_rsa with location of your id_rsa file.

Host cms-ssh.sc.imr.tohoku.ac.jp super.sc.imr.tohoku.ac.jp gpu.sc.imr.tohoku.ac.jp
User username
Host cms-ssh.sc.imr.tohoku.ac.jp
HostName cms-ssh.sc.imr.tohoku.ac.jp
IdentityFile ~/.ssh/keys/id_rsa
Host super.sc.imr.tohoku.ac.jp gpu.sc.imr.tohoku.ac.jp
ProxyCommand ssh cms-ssh.sc.imr.tohoku.ac.jp -W %h:%p
Host super.sc.imr.tohoku.ac.jp
HostName super.sc.imr.tohoku.ac.jp
Host gpu.sc.imr.tohoku.ac.jp
HostName gpu.sc.imr.tohoku.ac.jp

(3) Confirm the connection

This is an example how to login to Large-Scale Parallel Computing Server (super.sc.imr.tohoku.ac.jp).

[username@machine]$ ssh super.sc.imr.tohoku.ac.jp
Enter passphrase for key ‘/home/username/.ssh/keys/id_rsa’: passphrase
password: password
Last login: Wed Jul 25 17:20:44 2018 from 130.34.224.22

Disk quotas for user username (uid 12345):
Filesystem   kbytes   quota   limit    grace   files   quota   limit   grace
/home 89669752  2621440000 2883584000        -   903339        0        0        -
username@super1:~>

This is an example how to login to Accelerator Server (gpu.sc.imr.tohoku.ac.jp).

[username@machine]$ ssh gpu.sc.imr.tohoku.ac.jp
Enter passphrase for key ‘/home/username/.ssh/keys/id_rsa’: passphrase
username@gpu.sc.imr.tohoku.ac.jp’s password: password
Last login: Wed Jul 25 20:25:31 2018 from 130.34.224.22

Disk quotas for user username (uid 12345):
Filesystem   kbytes   quota   limit    grace   files   quota   limit   grace
/home 89669752  2621440000 2883584000        -   903339        0        0        -
username@gpu1:~>

Enter your passphrase at first. Then, please enter the initial password which was sent by mail, if you have not logged in our system yet. Otherwise, enter the password which was set by yourself. If the prompt is displayed, the login is successful.
Please change your initial password at first log-in to our system, according to the following policies:
(1) Minimum password length is 10.
(2) Use one or more lower-case letters.
(3) Use one or more upper-case letters.
(4) Use one or more numerical digits.
(5) Use one or more special characters (Non-alphanumeric), such as !, #, $.
Terminal window will close immediately after you change the password. Please login again with your new password.