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abstract:caviness:system_access:system_access [2019-01-07 16:34] – ssunkara | abstract:caviness:system_access:system_access [2021-10-13 09:58] – [Screen sessions] anita | ||
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- | ====== Connecting to Caviness ===== | ||
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- | ===== Secure shell program (SSH) ===== | ||
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- | Use a secure shell program/ | ||
- | program to move files to and from the cluster. | ||
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- | Please refer to Windows and Mac/Linux related sections for specific details: | ||
- | * [[: | ||
- | * [[: | ||
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- | There are many suitable secure clients for Windows, Mac OS X, and UNIX/Linux. We recommend PuTTY and Xming for Windows users. Macintosh and UNIX/Linux users can use their pre-installed SSH and X11 software. (Newer versions of Mac OS X may not have a current version of X11 installed. See the Apple web site for | ||
- | [[http:// | ||
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- | <note tip>IT strongly recommends that you configure your clients as described in the online X-windows (X11) and SSH documents | ||
- | ([[http:// | ||
- | [[http:// | ||
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- | <note important> | ||
- | Your HPC home directory has a '' | ||
- | modify the files that were initially created by the system. They facilitate communication between | ||
- | the login (head) node and the compute nodes. Only use standard **ssh** commands to add keys to the | ||
- | files in the '' | ||
- | </ | ||
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- | ===== Logging on to Caviness ===== | ||
- | You need a [[abstract: | ||
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- | <code bash> | ||
- | ssh traine@caviness.hpc.udel.edu | ||
- | </ | ||
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- | To learn about launching GUI applications on the Caviness from a Windows machine, refer to [[abstract: | ||
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- | Once you are logged into Caviness, your account is configured as a member of an investing-entity group name (workgroup) which determines access to your group' | ||
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- | <code bash> | ||
- | workgroup -g it_css | ||
- | </ | ||
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- | You will need to know [[: | ||
- | ===== Screen sessions ===== | ||
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- | When an ssh session is ended intentionally or by a loss of connectivity, | ||
- | restart it and resume your work. The UNIX **screen** command provides a useful solution. This | ||
- | command creates a virtual terminal window session that continues to run after you are logged off. It | ||
- | allows you to reattach the same virtual terminal window session and resume working. | ||
- | See the **man** page for **screen** for details. | ||
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- | <note tip> | ||
- | Suppose you have a significant amount of interactive work to be done on the cluster, but you have a interruption coming up shortly, such as lunch. | ||
- | You can start a screen session and work until lunchtime. | ||
- | </ | ||
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- | <note important> | ||
- | If you are using an unstable network connection, for example, a laptop that drops your connection when it sleeps, you may want to start a screen session before you lose connectivity. | ||
- | </ | ||
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