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Last modified by flenners on 2025-06-24 16:56
From version 16.1
edited by flenners
on 2022-03-30 17:46
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To version 21.1
edited by flenners
on 2025-06-24 16:56
Change comment: There is no comment for this version

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10 10  
11 11  == {{id name="00-HowtologintoMaxwell-TheDOORAccount"/}}The DOOR Account ==
12 12  
13 -Before you arrive you have to create a DOOR account (Institution: Physik Department E17) and do all the safety trainings. This account is also being used for the gamma-portal, where you can manage you beamtime data, grant access to other users and manage FTP access. However this account does not work with other resources. For this you will have to request a second account:
13 +Before you arrive you have to create a DOOR account and do all the safety trainings. This account is also being used for the gamma-portal, where you can manage you beamtime data, grant access to other users and manage FTP access. However this account does not work with other resources. For this you will have to request a second account:
14 14  
15 15  == {{id name="00-HowtologintoMaxwell-ThePSXAccount"/}}The PSX Account ==
16 16  
17 17  If you decide during a beamtime, you want to have access to the cluster, tell your local contact so, and they will request a PSX account for you. With this you will get access to the Kerberos, Windows and afs resources at DESY, which includes the cluster.
18 18  
19 +
20 +After you got the account, you have to change the initial password within 6 days. For this, go to [[https:~~/~~/passwd.desy.de/>>url:https://passwd.desy.de/||shape="rect"]] and log in with your user name and initial password (you do not need any OTP when you sign in for the first time). Then agree to the terms and change your password.
21 +
19 19  = {{id name="00-HowtologintoMaxwell-UsingtheCluster"/}}Using the Cluster =
20 20  
21 21  == {{id name="00-HowtologintoMaxwell-StructureoftheCluster"/}}Structure of the Cluster ==
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27 27  === {{id name="00-HowtologintoMaxwell-EntranceNodes"/}}Entrance Nodes ===
28 28  
29 29  If you have successfully obtained an PSX account you can get started. The entrance node are:
30 -\\[[https:~~/~~/max-nova.desy.de:3443/auth/ssh>>url:https://max-nova.desy.de:3443/auth/ssh||shape="rect"]]  (if you have access to the nova resources, most likely the case if your beamtime was in cooperation with the Helmholtz Zentrum Hereon)
33 +
31 31  
32 -[[https:~~/~~/max-display.desy.de:3443/auth/ssh>>url:https://max-display.desy.de:3443/auth/ssh||shape="rect"]]  (in any case)
35 +[[https:~~/~~/max-display.desy.de:3389/auth/ssh>>url:https://max-display.desy.de:3443/auth/ssh||shape="rect"]]  (in any case)
33 33  
34 34  These nodes are **not **for processing, as you will share them with many other users. So please do not do anything computational intensive on them, like reconstruction or visualization. Viewing images is ok.
35 35  
36 -=== {{id name="00-HowtologintoMaxwell-FastX2"/}}Fast X2 ===
39 +=== {{id name="00-HowtologintoMaxwell-FastX2"/}}Fast X3 ===
37 37  
38 -The cluster uses the software FastX2 for connection and virtual desktop. To get the right version of this, use the web interface, log in, and in the bottom right corner is a download link for the desktop client. The version has to match exactly to work properly.
41 +The cluster uses the software FastX3 for connection and virtual desktop. To get the right version of this, use the web interface, log in, and in the bottom right corner is a download link for the desktop client. The version has to match exactly to work properly.
39 39  
40 40  If you want to add a connection in the desktop client, click the plus, select web, use the address above (including the port), and your username and force ssh authentication. Then you can choose if you want a virtual desktop (XFCE) or a terminal.
41 41  
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49 49  
50 50  Your result will look something like this:
51 51  
52 -[[image:attach:P5I.User Guide\: NanoCT.4\. Reconstruction Guide.00 - How to login to Maxwell.WebHome@image2021-5-4_10-28-14.png||queryString="version=1&modificationDate=1620116894626&api=v2" alt="image2021-5-4_10-28-14.png"]]
55 +[[image:attach:P5I.User Guide\: NanoCT.4\. Reconstruction Guide.00 - How to login to Maxwell.WebHome@image2021-5-4_10-28-14.png||queryString="version=1&modificationDate=1620116894626&api=v2"]]
53 53  
54 54  == {{id name="00-HowtologintoMaxwell-SLURM"/}}SLURM ==
55 55  
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73 73  
74 74  For Jupyter Hub
75 75  
76 -\\
77 77  
78 78  == {{id name="00-HowtologintoMaxwell-ConnectingtotheCluster"/}}Connecting to the Cluster ==
79 79  
80 80  Connect to an entrance node via FastX. You will automatically be assigned to a node when you start a session via a load balancer (max-display001-003, max-nova001-002)
81 81  
82 -[[image:attach:P5I.User Guide\: NanoCT.4\. Reconstruction Guide.00 - How to login to Maxwell.WebHome@image2021-4-27_13-55-52.png||queryString="version=1&modificationDate=1619524552546&api=v2" alt="image2021-4-27_13-55-52.png"]]
84 +[[image:attach:P5I.User Guide\: NanoCT.4\. Reconstruction Guide.00 - How to login to Maxwell.WebHome@image2021-4-27_13-55-52.png||queryString="version=1&modificationDate=1619524552546&api=v2"]]
83 83  
84 84  Choose a graphic interface and look around.
85 85  
86 -\\
87 87  
88 88  == {{id name="00-HowtologintoMaxwell-DataStorage"/}}Data Storage ==
89 89  
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129 129  * -N 1: for one node
130 130  * -p psx: on the psx partition. You can also add multiple separated with a comma: -p psx,all
131 131  * -t 1-05:00:00: for the duration of 1 day and 5h
132 -* Other options could be: ~-~-mem=500GB with at least 500GB of memory
133 +* (((
134 +Other options could be: ~-~-mem=500GB with at least 500GB of memory,
135 +
136 +(% class="code" %)
137 +(((
138 +if you need gpu: (% class="bash plain" %){{code language="none"}}--constraint=P100{{/code}}
139 +)))
140 +)))
133 133  * ... see the SLURM documentation for more options
134 134  
135 135  If your job is scheduled you see your assigned node and can connect via ssh to it. (in the rare case where you do not see anything use my-jobs to find out the host name).
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169 169  
170 170  {{/code}}
171 171  
172 -\\
173 173  
174 174  To run this use
175 175  
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177 177  sbatch ./your_script.sh
178 178  {{/code}}
179 179  
180 -\\
181 181  
182 182  === {{id name="00-HowtologintoMaxwell-Viewingyouallocations"/}}Viewing you allocations ===
183 183  
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191 191  my-jobs
192 192  {{/code}}
193 193  
194 -\\
195 195  
196 196  === {{id name="00-HowtologintoMaxwell-Whatisrealisticintermsofresources"/}}What is realistic in terms of resources ===
197 197  
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199 199  
200 200  If you want to do some small processing, use one of the psx nodes. This should work most of the time.
201 201  
202 -\\
203 203  
204 204  == {{id name="00-HowtologintoMaxwell-GrantingDataAccesstootherBeamtimes"/}}Granting Data Access to other Beamtimes ==
205 205  
206 -If you have to add other users to a past beamtime, this can be done via the gamma-portal. After adding the accounts, these people have to make sure to log off from **all **FastX sessions, etc. to update the permissions.
210 +If you have to add other users to a past beamtime, this can be done via the gamma-portal (by PI, leader or beamline scientist). After adding the accounts, these people have to make sure to log off from **all **FastX sessions, etc. to update the permissions.
207 207  
208 -\\
209 209  
210 -\\
211 211  
212 -\\
214 +
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1 -https://confluence.desy.de/spaces/P5I/pages/256492698/00 - How to login to Maxwell
1 +https://confluence.desy.de/spaces/P5I/pages/204941497/00 - How to login to Maxwell