quick:help
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quick:help [2016/03/02 14:20] wikiadmin created |
quick:help [2025/06/30 14:39] (current) ccrosby [The Help Desk] |
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| ===== The Help Desk ===== | ===== The Help Desk ===== | ||
| - | If you need assistance, please go to [[http://www.chpc.ac.za/ | + | If you need assistance, please go to [[http://users.chpc.ac.za/ |
| ===== Please RTFM (Read The Fine Manual) ===== | ===== Please RTFM (Read The Fine Manual) ===== | ||
| Before submitting the support request, please take a moment to read whatever relevant documentation is available on [[http:// | Before submitting the support request, please take a moment to read whatever relevant documentation is available on [[http:// | ||
| + | |||
| + | ===== Asking for help with login problems ===== | ||
| + | CHPC users log into the cluster using the secure shell protocol, or ssh. However, there are many different software clients that can be used for this purpose, such as command line ssh from Linux, Windows or macOS, or applications such as PuTTY, MobaXterm or WinSSH. | ||
| + | < | ||
| + | ssh -v jblogs@lengau.chpc.ac.za | ||
| + | </ | ||
| + | will provide some additional information and | ||
| + | < | ||
| + | ssh -vv jblogs@lengau.chpc.ac.za | ||
| + | </ | ||
| + | even more. Simply saying "I cannot log in" does not enable us to help you. It could be for one of many reasons, such as: | ||
| + | - Network problems at the user's end | ||
| + | - Network problems at the CHPC's end | ||
| + | - Blocked login due to too many failed attempts | ||
| + | - Forgotten or mis-typed password | ||
| + | - A problem with the CHPC's login and authentication system | ||
| + | - A problem with the user's ssh client software | ||
| + | |||
| + | Here are some things that the user can try: | ||
| + | - Use a different client | ||
| + | - Get verbose output, as described above, to try and diagnose the problem | ||
| + | - Check network connectivity | ||
| + | - Check ssh login to a totally different site, if possible | ||
| + | - Try the alternative login node, such as '' | ||
| + | |||
| + | |||
| ===== Some hints on resolving your difficulty ===== | ===== Some hints on resolving your difficulty ===== | ||
| Here are some things to try: | Here are some things to try: | ||
| - | * PBSPro has replaced Moab as the job scheduler. | + | * Please look at the example job scripts |
| - | * The syntax of a PBSPro job script is similar to that of a Moab script, but not identical. | + | * PBSPro syntax is not identical to PBS. |
| - | * PBSPro syntax is also not identical to PBS. | + | |
| * PBSPro requires you to change to the working directory with a '' | * PBSPro requires you to change to the working directory with a '' | ||
| * Use ldd to check if the executable can link to the correct libraries. | * Use ldd to check if the executable can link to the correct libraries. | ||
| - | * Neither | + | * The environment variables |
| * Please put some effort into estimating and requesting a realistic Walltime. | * Please put some effort into estimating and requesting a realistic Walltime. | ||
| + | * Please try repeat a previous calculation which actually worked - please make sure to keep a backup of this previous calculation (please do not overwrite your old results). | ||
| + | * Please confirm you are submitting to the appropriate queue. Possible queues: http:// | ||
| + | * The error messages in your code's output and the standard error file are very helpful. The first instance of the error or warning is often the most significant one. | ||
| ===== Information to include in your support query ===== | ===== Information to include in your support query ===== | ||
| Please include the following information where relevant: | Please include the following information where relevant: | ||
| - | * Your CHPC login name | + | |
| * Your affiliation (company, university, institute, etc.) | * Your affiliation (company, university, institute, etc.) | ||
| * A one-line summary of the project that you are working on | * A one-line summary of the project that you are working on | ||
| - | * The software that you are using | + | |
| - | * The directory in which your troublesome project is located | + | |
| + | * **The directory in which your troublesome project is located** | ||
| + | * **The name of your submit script** | ||
| + | * **As much relevant error output as you can find** | ||
| * The language in which the code was written | * The language in which the code was written | ||
| * The compiler used | * The compiler used | ||
/app/dokuwiki/data/attic/quick/help.1456921221.txt.gz · Last modified: 2021/12/09 16:42 (external edit)
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