Rules

The use of various Advanced Computing services is described in the regulations on our official website.

Access and CroRIS

Access to all services is achieved by submitting a request through a web application which can only be accessed with an AAI identity. Depending on the nature of the scientific activity (defined in the right of access in the rulebook), the conditions for submitting requests are:

• Research project - the project must be verified in the science information system of the Republic of Croatia CroRIS
• Institutional project - a special category of research project that meets the following requirements:
  • an application for the institutional project can be submitted by a person registered in the Register of Scientists
  • the request can be submitted by a person who is not registered on any active project in the CroRIS
  • maximum project duration is one year
    • project manager can request an extension of the project in case all the above conditions are met
• Thesis preparation - preparation of final, graduate, specialist and doctoral theses at public universities and public scientific institutes.

• Practical teaching - practical teaching within courses at universities

Web application

The diagram above shows the procedure for submitting a request and registering a user

Submitting an application

The request for use is submitted by pressing "New request"(red button at the top of Figure 1), where it is necessary to mark the nature of the activity via the drop-down menu "Request type" (at the top of Figure 1):

• "Research project" - It is necessary to select one of the offered projects verified in the CroRIS system
• "Practical class" or "Thesis project"  - no need to select a project

Figure 1. Request submission page in the web application

After the type of request and/or project has been selected, it is necessary to fill in the "General" part (continuation of the web application page Figure 2 and Figure 3):

• "Name" - the name of the project, work or practical lesson
• "Explanation" - explanation of why you need the advanced computing service
• "Usage period" - the planned period of use of the service
• "Scientific domain" - free assessment of the share in the scientific field/field in the research project/practical teaching
• "Scientific software" - which applications you plan to use
• "Resources" - Free estimate of the type and amount of resources you plan to use
  • "Resource type" (multiple options can be selected):
    • Supek (server specification overview):
      • GPU - servers that contain graphics processors
      • CPU - servers that contain a large number of CPU cores
      • BIGMEM - servers with large memory capacity
    • Vrančić (server specification overview):
      • CLOUD - only servers
      • CLOUD-GPU - servers that contain graphics processors
      • CLOUD-BIGMEM - servers that contain a large memory capacity
      • PADOBRAN
    • YUPYTER
  • HPC - if you plan to use the Supek supercomputer, try to estimate how many resources you need per job
  • CLOUD - if you plan to use Vrančić and the cloud computing service, try to estimate the specification and amount of virtual servers

Figure 2. Part of the request page dedicated to the project details in the web application

Figure 3. Part of the request page dedicated to project details in the web application

Figure 4. Part of the page with all requests in the web application

Adding collaborators

When the request for use is approved, it is possible to send invitations to other project participants via the "Membership" tab, the "Invite collaborators" button (red and blue buttons at the top and bottom of Figure 5), depending on the nature of the activity you have reported:

• Research project - If they are members of a research project, the participants must be registered in the CroRIS system and logged in to the project in order for the invitation to be possible
• Practical classes or Preparation of the final thesis - Participants do not need to be registered in the CroRIS system

Figure 5. Page for adding collaborators in the web application

By pressing the blue "Invite collaborators" button, the option to enter an email will open (Figure 6). In the case of adding collaborators from the research project, it is possible to select only the members of the research project in CroRIS, while in the case of adding members of practical classes or creating a paper, it is possible to enter all email addresses. By pressing the green "Pošalji poveznice za prijavu"(engl. Send application links) button, one or more invitations will be sent to the selected/entered email addresses, which the participants must confirm with their AAI identity.

Figure 6. Selection of collaborators' email addresses

After sending the invitation to the collaborator/associate, the entry in the  "Prijavljen"(engl. Registered) column will change to the image of a green envelope (Figure 6).

When participants confirm their registration by clicking on the link sent, the "Prijavljen"(engl. Registered) column will change from the green image of the envelope to "Yes"

SSH key management

To access the Supek cluster via an SSH session, it is necessary to load the public part of the SSH key by pressing "Public keys"(red button at the top of Figure 8). Add the public part of the key (Figure 8) by pressing the green "Add public key" button. Instructions for creating SSH keys are available on the page for creating an SSH key pair or in video instructions:

• linux - ssh-keygen application
• windows - PuTTY Key Generator application

Figure 8. Page for adding SSH public keys in the web application

Figure 9. Adding a new public key in the web application

Video 1. Creating ssh keys and uploading them to a web application in Linux OS

Video 2. Creating ssh keys and loading them into a web application in Windows OS

Resource Usage Overview

After logging into the application, the homepage displays resource usage. All logged-in users can view their personal usage. If a user is also a project leader, additional tabs will appear, showing the usage of the projects they manage and the individual users within those projects

View for Project Leaders

Leader view - projects

The first tab under the "Usage" tab allows leaders to view usage per project (Figure 10). By default, the monthly usage of each project for which the logged-in user is a leader is displayed as cumulative bars for the last 12 months. Placing the cursor over a specific bar displays the total usage for that project. The graphs are categorized by resource type, and projects are represented by the same colors across all resource usage graphs. The colors assigned to projects are displayed in a legend at the bottom of the page.

Clicking the "Cumulative display" button provides an overview of total project usage from the beginning of advanced computing resource usage to the present (or until the project's completion, if it is no longer active).

The "Years" dropdown menu allows filtering the display by year, with available options limited to years for which data exists. Users can also choose to view data for the last 12 months (default view; "Show Last 12 Months" option) or from the beginning of resource usage ("Show All" option).

The "Projects" dropdown menu allows users to display only selected projects. When specific options are checked, only those projects will be shown; if no projects are selected, all projects will be displayed. To improve readability, projects are listed in the dropdown menu by their codes. However, placing the cursor over a project shows a tooltip with its full name. Additionally, a button next to each project code allows users to copy the code to the clipboard.

Figure 10. Tab showing resource usage per project for the user who is the leader.

Leader view - Users

On the second tab below the "Usage" tab, the leader's view can be selected, displaying the usage of individual users on the selected project (Figure 11). The name of the selected project is shown at the top right of the page, just below the toolbar with various options. By default, the graphs display the monthly usage of each user on the selected project over the past 12 months. Moving the cursor over the graphs reveals the usage data for each user. Each user is represented by the same color across all resource graphs, and the legend is located at the bottom of the page.

Clicking the "Cumulative display" button provides an overview of total usage from the start of the project to the present (or until the project is finished, depending on whether the project is active).

The "Users" dropdown menu is used to filter the display by user. Only selected users will be shown; if none are selected individually, data for all users will be displayed. The dropdown options include users for whom usage has been recorded, not all users logged into the project.

In the "Years" dropdown menu, you can select the year for which you want to view the display. The available options correspond to the years for which usage data has been recorded. Additionally, you can choose to view the data for the last 12 months (default view; "Show Last 12 Months" option) or from the start of resource usage ("Show All" option).

Selecting the project for which data is to be viewed is done through the last dropdown menu in the sequence, the "Projects" menu. The options are listed by project codes, but if you move the pointer over a specific option, a tooltip will display the full project name. Additionally, next to each code, there is a button to copy the project code to the clipboard.

Figure 11. Tab displaying resource usage by individual users of a project for a user who is the leader.

Personal Usage

After logging into the web application, resource usage can be found under the "Usage" tab (Figure 12). By default, cumulative graphs displaying monthly consumption across all projects for the last 12 months are shown. By clicking the "Cumulative display" button, you can view the total usage for each project from the start of its duration until today (or until the project ends, depending on whether it is still ongoing). When you place the cursor over a specific bar in the graph, it displays the usage for that particular project.  The project is represented by the same color across all resource graphs, and the legend is shown at the bottom of the page.

In the "Years" dropdown menu, the display can be filtered by year. Additionally, there is an option to view the last 12 months (default view; "Show Last 12 Months" option), or view from the beginning of usage tracking ("Show All" option).

The "Projects" dropdown menu allows filtering by project. Projects are listed by their codes but when you place the cursor over a specific code, a tooltip will appear showing the full project name. Additionally, next to each project code, there is a button to copy the code to the clipboard. If no project is selected in the dropdown menu, all projects with recorded usage will be displayed.

Figure 12. Tab with a graphical display of resource usage (default view).

Contact

The service contact mail is computing@srce.hr.