This page explains how to set up PuTTY for login supercomputers.

Generate a key

Executing PuTTYgen, click on “Generate” and then move the mouse randomly over the blank area until a key is generated:

Put your “key passphrase” and then confirm it below. This key passphrase will be used as a password for login.

Click on ?”Save public key” and “Save private key” and save them.

Copy the Key appearing at the top and save it in a file saved in the same directory for the two keys above.

Register the generated key

Move onto the application portal site of Kyushu-U and login.

Click on “File Operation(ファイル操作)” and select .ssh directory.

Click on “Open Directory(ディレクトリを開く)” below the directory window.

Select “authorized_keys” and click on “Edit File (ファイル編集)” and a new window will popup . If the popup is prohibited, you need to change the security policy for this site.

Copy the generated key starting with “ssh-rsa” and save it.

SSH Login

Put “Host Name(ホスト名)” like “mikasa.cc.kyushu-u.ac.jp” for SR16000 or “”hakozaki.cc.kyushu-u.ac.jp” for HA8000.

Click on SSH -> Authentication(認証) and select the private key by clicking on “Select(参照).”

Click on “Session(セッション)” and put a name for the session, e.g., “SR16000” for mikasa.cc.u-tokyo.ac.jp.

Click on “Save(保存)”

Click on “Open(開く)” and now you can login using your account and key passphrase. You may encounter a message for the first time and just click on “Yes.”