Table of Contents
In the following you can find a simple and quick start guide for both users new to HPC systems and expert users that would like to use our systems
It describes all the steps to be followed to get access to our systems up to the first job submission.
This is a schematic guide with few examples and it is not intended to be complete. We always strongly recommend to read the full documentation that can be reached using the links you can find along the text.
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The first step is to get a username on our database and a password to enter our HPC clusters.
This step alone does not grant you access to our clusters. You also need to be associated to an account that has budget resources with "cpu-hours" to be used in the clusters. |
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There are multiple ways to get an account budget (see also UG2.2 Become a User):
Once your username has been associated to an active account you can request to have access to our HPC clusters by clicking on the button on your userDB personal page. (The button appears only after you have been associated to an account) After we have granted you the access, you will receive two emails with the username and the password to be used to login. Remember once logged to change your password using “passwd” command. Remember: Login credentials are to be considered as strictly personal, meaning that NO SHARING between members of the same working group is expected to happen. Each single user entitled with login credentials is to be considered personally responsible for any misuse that should take place. |
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Once you will have received your credentials, you can login the cluster in which the budget account, you are associated to, is active. The simplest way is to open a terminal and type > ssh <username>@login.<cluster>.cineca.it (Windows users can find here the instructions) Alternative ways to connect to CINECA HPC clusters are described in the "UG2.3 Access to the Systems" page. Available clusters are Galileo and Marconi (UG3.0 System specific guides). |
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On the cluster, you can keep an eye on your budget of hours using the command > saldo -b This lists all the accounts associated to your username on the current cluster, together with the "budget" and the consumed resources. One single username can use multiple accounts and one single account can be used by multiple usernames (and even on multiple platforms), all competing for the same budget. |
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Some software, environments and compilers are already installed on the clusters and are available as modules (UG2.6 Production Environment and Tools). > modmap shows all the profiles, categories and modules that you can load. To load a module type: > module load <module_name> If the module is inside a specific profile you have to load the profile before the module > module load profile/<profile_name> There are many useful options of the functions "modmap" and "module" that are described here. You can also install your libraries and programs on your local folder. Please write to superc@cineca.it for any question or request about modules and software installations. |
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Our HPC systems offer several options for the data storage:
Important details and suggestions how to use each space can be found in the "UG2.5 Data Storage and Filesystem" page. In order to monitor the occupancy of your space you can use the "cindata" command |
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Once you have your compiled program and prepared its input data, the last step is to run it on the compute nodes of the cluster. Important: the node you are logged in is a login node and cannot be used to execute parallel programs. For longer runs you need to use the "batch" mode. On CINECA machines we use the SLURM scheduler.
Congratulations! You have successfully execute your first job on our clusters. For any problem or question please refer to our Help Desk writing to superc@cineca.it |