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Last modified by flenners on 2025-06-24 16:56
From version 18.1
edited by flenners
on 2023-04-24 10:45
Change comment: There is no comment for this version
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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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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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
132 132  * (((
133 -Other options could be: ~-~-mem=500GB with at least 500GB of memory, 
134 +Other options could be: ~-~-mem=500GB with at least 500GB of memory,
134 134  
135 135  (% class="code" %)
136 136  (((
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176 176  
177 177  {{/code}}
178 178  
179 -\\
180 180  
181 181  To run this use
182 182  
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184 184  sbatch ./your_script.sh
185 185  {{/code}}
186 186  
187 -\\
188 188  
189 189  === {{id name="00-HowtologintoMaxwell-Viewingyouallocations"/}}Viewing you allocations ===
190 190  
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198 198  my-jobs
199 199  {{/code}}
200 200  
201 -\\
202 202  
203 203  === {{id name="00-HowtologintoMaxwell-Whatisrealisticintermsofresources"/}}What is realistic in terms of resources ===
204 204  
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206 206  
207 207  If you want to do some small processing, use one of the psx nodes. This should work most of the time.
208 208  
209 -\\
210 210  
211 211  == {{id name="00-HowtologintoMaxwell-GrantingDataAccesstootherBeamtimes"/}}Granting Data Access to other Beamtimes ==
212 212  
213 -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.
214 214  
215 -\\
216 216  
217 -\\
218 218  
219 -\\
214 +
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1 -https://confluence.desy.de/spaces/P5I/pages/361457307/00 - How to login to Maxwell
1 +https://confluence.desy.de/spaces/P5I/pages/204941497/00 - How to login to Maxwell