Getting Access¶
The Maxwell cluster consists of various partitions. Each partition has its own access restrictions. If you have access to any of the partitions, you have access to the Maxwell cluster and the interactive login nodes.
Getting access to the DESY general partitions¶
The partitions named maxcpu, maxgpu, short are provided by DESY-IT and are primarily intended for DESY employees - under one condition: your application is suitable for high-performance computing. That could include
- multi-core MPI applications which can efficiently use most of the cores on a single or multiple nodes
- many-core applications requiring a very low-latency high-bandwidth network
- application with very high memory consumption
- photon science applications or simulations in need of GPU acceleration
Embarrassingly parallel applications like Monte-Carlo simulations are usually poor examples of utilizing the resources effectively. We would advise using the NAF cluster instead, or your groups resources in Maxwell.
If your group has own resources (partitions) in Maxwell (see below) we recommend you first approach your admins and get access to that partition(s). That will also give you access to all, allgpu partitions, and is independent of the type of application you intend to run.
Info
If you think that
- the Maxwell cluster might help with your computational problems
- you need access to maxcpu/maxgpu/short partitions
- you have very demanding applications, or
- are unsure whom to contact : just drop a message to maxwell.service@desy.de asking for the resource,
- but please explain very briefly what kind of applications you intend to run
Getting access to display nodes or jupyterhub¶
Access to display nodes or jupyterhub (max-jhub.desy.de) is granted through access to Maxwell partitions. If you have access to any of the Maxwell partitions, you also have access to display (login) nodes and the jupyterhub. If you don't have access to any partition, you also won't get access to display nodes or jupyterhub.
Getting access to other partitions¶
Access to other partitions is controlled by registry resources, which are exclusively managed by the corresponding namespace administrators. If in doubt, please contact maxwell.service@desy.de.
Which partition for which users¶
The following table lists the most of the partitions and whom to contact to get access to partitions. See below how to check your current account status. If in doubt, contact maxwell.service@desy.de. See page on partitions for a complete list of partitions.
| Partition | Users/Groups | Contact for getting access |
|---|---|---|
| maxcpu, maxgpu, short | DESY staff with suitable applications | maxwell.service@desy.de |
| allcpu, allgpu | all maxwell users | implicit through maxwell resources |
| cdcs | members of CDCS | CDCS admins |
| maxgpu | CMS staff | CMS-admins of UHH and DESY |
| cssbcpu, cssbgpu, ukecpu, livcpu, livgpu,cssball | CSSB staff and users | it@cssb-hamburg.de |
| cfel partitions | members of CFEL-DESY | CFEL-DESY admins |
| exfel*, upex* | Eu.XFEL staff and users | it-support@xfel.eu |
| mcpu | Maxwell users of M | M admins |
| mpa | members of MPA | M admins |
| pscpu, psgpu | Photon Science staff | fs-ec@desy.de |
| psxcpu, psxgpu | Users of Petra-3 and FLASH | fs-ec@desy.de |
| fspetra, p06,p11,p... | Beamline specific partitions | beamline staff or fs-ec@desy.de |
| petra4 | Petra-4 TDR Team | MPY admins |
| xfel* | DESY XFEL accelerator group | MPY admins |