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Last modified by flenners on 2025-06-24 16:56
From version 20.1
edited by flenners
on 2024-05-24 14:51
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 20  
21 21  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.
22 22  
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31 31  === {{id name="00-HowtologintoMaxwell-EntranceNodes"/}}Entrance Nodes ===
32 32  
33 33  If you have successfully obtained an PSX account you can get started. The entrance node are:
34 -\\[[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 +
35 35  
36 36  [[https:~~/~~/max-display.desy.de:3389/auth/ssh>>url:https://max-display.desy.de:3443/auth/ssh||shape="rect"]]  (in any case)
37 37  
38 38  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.
39 39  
40 -=== {{id name="00-HowtologintoMaxwell-FastX2"/}}Fast X2 ===
39 +=== {{id name="00-HowtologintoMaxwell-FastX2"/}}Fast X3 ===
41 41  
42 -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.
43 43  
44 44  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.
45 45  
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53 53  
54 54  Your result will look something like this:
55 55  
56 -[[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"]]
57 57  
58 58  == {{id name="00-HowtologintoMaxwell-SLURM"/}}SLURM ==
59 59  
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77 77  
78 78  For Jupyter Hub
79 79  
80 -\\
81 81  
82 82  == {{id name="00-HowtologintoMaxwell-ConnectingtotheCluster"/}}Connecting to the Cluster ==
83 83  
84 84  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)
85 85  
86 -[[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"]]
87 87  
88 88  Choose a graphic interface and look around.
89 89  
90 -\\
91 91  
92 92  == {{id name="00-HowtologintoMaxwell-DataStorage"/}}Data Storage ==
93 93  
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134 134  * -p psx: on the psx partition. You can also add multiple separated with a comma: -p psx,all
135 135  * -t 1-05:00:00: for the duration of 1 day and 5h
136 136  * (((
137 -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,
138 138  
139 139  (% class="code" %)
140 140  (((
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180 180  
181 181  {{/code}}
182 182  
183 -\\
184 184  
185 185  To run this use
186 186  
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188 188  sbatch ./your_script.sh
189 189  {{/code}}
190 190  
191 -\\
192 192  
193 193  === {{id name="00-HowtologintoMaxwell-Viewingyouallocations"/}}Viewing you allocations ===
194 194  
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202 202  my-jobs
203 203  {{/code}}
204 204  
205 -\\
206 206  
207 207  === {{id name="00-HowtologintoMaxwell-Whatisrealisticintermsofresources"/}}What is realistic in terms of resources ===
208 208  
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210 210  
211 211  If you want to do some small processing, use one of the psx nodes. This should work most of the time.
212 212  
213 -\\
214 214  
215 215  == {{id name="00-HowtologintoMaxwell-GrantingDataAccesstootherBeamtimes"/}}Granting Data Access to other Beamtimes ==
216 216  
217 -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.
218 218  
219 -\\
220 220  
221 -\\
222 222  
223 -\\
214 +