Differenze

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--- oph:cluster:startupguide [2023/04/19 08:09] – [Cluster Access] domain not required diego.zuccato@unibo.it
+++ oph:cluster:startupguide [2025/02/10 11:29] (versione attuale) – aggiornato indirizzo IP del frontend mario.petroli@unibo.it
@@ Linea 8: / Linea 8: @@
 Once authorised, one could access the cluster via ssh protocol. The required password is the one of your university e-mail. From the Linux terminal, type the following instruction:
-  * if you are a **student**: ''ssh name.surname00@137.204.50.177''
+  ssh name.surname00@137.204.165.41
-  * if you are a **staff member**: ''ssh name.surname00@137.204.50.177''
+(you can use any other ophfeX address instead of 137.204.165.41)
-Once logged-in, you will be landed on the [[oph:cluster:jobs|Frontend]], the workspace shared by all users that is employed to submit jobs and access datasets stored in memory.
+Once logged in, you will land on the [[oph:cluster:jobs|Frontend]], the workspace shared by all users that is employed to submit jobs and access datasets stored in memory.
 <WRAP center round alert 60%>
@@ Linea 26: / Linea 26: @@
 At the first connection to the cluster, the system automatically generates a folder for you in the ''/home'' partition. This is a limited memory area and should not be used to store massive amounts of data. Typically, software codes and intensive-use documents or scripts that do not take up much space is saved under this area.
-You can manage the data in this folder directly from the Frontend and to your liking, as long as you limit the storage space used and the number of files saved.
+You can manage the data in this folder directly from the Frontend and to your liking, as long as you limit the storage space used.
 ==== Data storage area: /scratch ====
@@ Linea 44: / Linea 44: @@
 <WRAP center round alert 60%>
-The /scratch area cannot handle folders with a large number of files. Data folders in this area must be compacted into archives (e.g., .tgz or .zip) unless in imminent use.
+The /scratch area cannot handle folders with a large number of files. Data folders in this area must be compacted into archives (e.g., .tgz or .zip).
 </WRAP>
 **Please pay attention to this policy**: the stable number of files saved in /scratch shall not exceed a few thousand per user. Otherwise, the system becomes incredibly slow and unstable. Periodic checks on the number of files of each user are carried out automatically.
+**Note to student supervisors **: Once you have created the data write folder for your students, you can request read and write rights to access the files through ''setfacl -m u:name.surname0:rw /home/pathToFolder'', where ''name.surname0'' is your account name and ''/home/pathToFolder'' is the universal path to the folder you want to access.
 ===== Run a Job =====
-The job executed (in parallel or serial) on the cluster are managed by  [[https://slurm.schedmd.com/documentation.html|Slurm WorkLoad Manager]].
+The job executed (in parallel or serial) on the cluster is managed by  [[https://slurm.schedmd.com/documentation.html|Slurm WorkLoad Manager]].
 The submission of a job is done via a bash-type script, consisting of: the header with metadata for users, the execution settings (e.g. number of processors, memory, execution time), the modules and the executable to be run. See the section [[oph:cluster:jobs|Run a Job]] for more details.
 <WRAP center round tip 60%>
-An example job script with comments can be downloaded here and adapted to personal needs:  [[https://liveunibo.sharepoint.com/:u:/s/HPCClusterbetatesters/EecW_OOm3_NCle2VM3lZtZgBUSj6IbAxR_Hmh0Faf3quCQ?e=whnblQ|runParallel.sh]]
+An example job script with comments can be downloaded here and adapted to personal needs:  [[https://apps.difa.unibo.it/wiki/_export/code/oph:cluster:jobs?codeblock=0|runParallel.sh]]
 </WRAP>
@@ Linea 82: / Linea 82: @@
 The cluster management requires quite a lot of time and energy at this stage. The management team kindly asks not to contact the technical administrators except for urgent matters or serious problems (which do not allow work to continue). Reports of malfunctions may be sent without guarantee of an immediate response.
-  * For information on accounting and cluster access problems, please contact the referece person for your research area: [[oph:cluster:access|here the mail list]].
+  * For information on accounting and cluster access problems, please contact the [[oph:cluster:access|reference person for your research area]].
   * For problems accessing memory and executing jobs on the cluster, contact the system administrators at ''difa.csi@unibo.it''.