Version 2 of HPC section, combined content from PR #2658

Author: Joona Tolonen

docs/support/tutorials/services-for-courses.md

@@ -3,17 +3,26 @@
 This guide will explain how to use the course project type with CSC's
 high-performance computing (HPC) and cloud services.
 
-## Prerequisites
+Staff members from higher education institutions and state research 
+institutes can create a MyCSC course project. The procedure is as follows:
 
-Staff members from higher education institutions and state research institutes can create a MyCSC course project. What you will need is:
+   1. Have a [CSC account](../../accounts/how-to-create-new-user-account.md)
+   2. Create a [MyCSC course project](../../accounts/how-to-create-new-project.md)
+   3. Activate wanted [service](../../accounts/how-to-add-service-access-for-project.md)
 
-   1. [A CSC account](../../accounts/how-to-create-new-user-account.md)
-   2. [A MyCSC course project](../../accounts/how-to-create-new-project.md)
-   3. [A Service activated](../../accounts/how-to-add-service-access-for-project.md)
+!!! tip "Noppe"
+    You don't need a MyCSC project to use the Noppe service.
+    [Who and how can Noppe be used?](../../cloud/noppe/index.md#who-and-how-can-noppe-be-used)
 
 ## Available services
 
-The following services are available to support you in delivering your course. All services except Noppe require an active MyCSC project with the relevant service enabled. Applying for more quota depends on the services; see the details below. The medium (M) billing unit package is the default package granted for course projects. This should cover most use cases.
+The following services are available to support you in delivering your course.
+All services except Noppe require an active MyCSC project with the relevant
+service enabled.
+
+Applying for more quota depends on the services; see the
+details below. The medium (M) billing unit package is the default package
+granted for course projects. This should cover most use cases.
 
 The services are listed in alphabetical order.
 
@@ -25,7 +34,26 @@ The services are listed in alphabetical order.
 
 !!! info "Next HPC: Roihu"
 
-    CSC's next national supercomputer Roihu, a BullSequana XH3000 hybrid system, will replace the Puhti and Mahti supercomputers. More information about [Roihu](../../computing/systems-roihu.md).
+    CSC's next national supercomputer Roihu, a BullSequana XH3000 hybrid system,
+    will replace the Puhti and Mahti supercomputers. More information about
+    [Roihu](../../computing/systems-roihu.md).
+
+
+The course project can host a maximum of 50 students at a time. Please note that
+course projects are subject to the same Slurm job priority policies as regular
+computing projects, meaning that course participants may need to queue for resources
+if the system is under heavy use.
+
+To ensure the availability of resources at the time of the course session(s)
+and thus avoid queuing, an _advance resource reservation_ may be requested for
+the course. In this case, please
+[contact CSC Service Desk](../../support/contact.md) **at least 14 days beforehand**.
+
+The request should be motivated and include:
+
+1. the number of participants,
+2. the resources planned for the course,
+3. and a timetable showing the schedule of the course.
 
 The guidelines for booking Puhti and Mahti services for a course are given below.