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10 10  
11 11  == Access to the Maxwell cluster ==
12 12  
13 -
14 14  The [[Maxwell Cluster>>url:https://confluence.desy.de/display/IS/Photon+Science+on+Maxwell||rel="nofollow" shape="rect"]] is a powerful farm of inter-connected PC nodes running Scientific GNU/Linux. **To access the cluster you need a DESY AFS computing account or a so called scientific account (PSX).**
15 15  
16 -\\
15 +{{info title="PSX account"}}
16 +The scientific (internally called: PSX)  account is a "real" account that is needed to be able to log into DESY computers ( mainly used for Maxwell). This is different from the[[ DOOR>>url:https://door.desy.de/door/index.php||shape="rect"]] account that you need for administrative purposes to be registered for the experiment, do safety training etc.
17 17  
18 -* If you have a default DESY AFS account login to **[[max-fsc.desy.de>>url:http://max-fsc.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}} using your personal account. (From outside of DESY network tunnel through **[[bastion.desy.de>>url:http://bastion.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}} or use the [[remote login(% class="confluence-embedded-file-wrapper confluence-embedded-manual-size" %)~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://confluence.desy.de/display/IS/Remote+Login||rel="nofollow" shape="rect"]](%%) to **[[max-display.desy.de>>url:http://max-display.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}}.
19 -* Scientific account users instead go to **[[desy-ps-cpu.desy.de>>url:http://desy-ps-cpu.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}}. To connect to the Maxwell cluster from outside the DESY network ~-~- eduroam or the DESY guest network are considered to be outside ~-~- then you can SSH tunnel your connection through **[[desy-ps-ext.desy.de>>url:http://desy-ps-ext.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}} or more conveniently directly use the [[remote login(% class="confluence-embedded-file-wrapper confluence-embedded-manual-size" %)~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://confluence.desy.de/display/IS/Remote+Login||rel="nofollow" shape="rect"]](%%) to **[[max-display.desy.de>>url:https://max-display.desy.de:3443/||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}}.
18 +To get a PSX account please talk to your local contact well before the beamtime. The local contact will take care of the paper work and send you more instructions.
19 +{{/info}}
20 20  
21 -**Note**: Please, always do use your personal account to work on the Maxwell cluster or any central DESY computing resources. Don't use the functional accounts like vuvfuser or bl1user. Using functional accounts on shared resources causes many difficult to predict problems, even if it might appear to work for you in the beginning. Also, **never** try to login to **bastion**{{code language="none"}}{{/code}}, **desy-ps-ext**{{code language="none"}}{{/code}}, or **max-display**{{code language="none"}}{{/code}} using one of the functional accounts.
21 +* Scientific account (PSX) users instead go to **[[desy-ps-cpu.desy.de>>url:http://desy-ps-cpu.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}}. To connect to the Maxwell cluster from outside the DESY network ~-~- eduroam or the DESY guest network are considered to be outside ~-~- then you can SSH tunnel your connection through **[[desy-ps-ext.desy.de>>url:http://desy-ps-ext.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}} or more conveniently directly use the [[remote login(% class="confluence-embedded-file-wrapper confluence-embedded-manual-size" %)~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://confluence.desy.de/display/IS/Remote+Login||rel="nofollow" shape="rect"]](%%) to **[[max-display.desy.de>>url:https://max-display.desy.de:3443/||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}}.
22 +* If you have a default DESY AFS (DESY employees) account login to **[[max-fsc.desy.de>>url:http://max-fsc.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}} using your personal account. (From outside of DESY network tunnel through **[[bastion.desy.de>>url:http://bastion.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}} or use the [[remote login(% class="confluence-embedded-file-wrapper confluence-embedded-manual-size" %)~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:https://confluence.desy.de/display/IS/Remote+Login||rel="nofollow" shape="rect"]](%%) to **[[max-display.desy.de>>url:http://max-display.desy.de||rel="nofollow" shape="rect" class="external-link"]]**{{code language="none"}}{{/code}}.
22 22  
23 -The rest of this guide assumes you can login to the suggested Maxwell cluster node and are able to successfully run the command **xclock**{{code language="none"}}{{/code}} to get a clock face displayed on your client computer.
24 -
25 25  \\
26 26  
27 -\\
26 +{{info title="login with functional accounts"}}
27 +**Note**: Please, always do use your personal account to work on the Maxwell cluster or any central DESY computing resources. Don't use the functional accounts like vuvfuser or bl1user. Using functional accounts on shared resources causes many difficult to predict problems, even if it might appear to work for you in the beginning. Also, **never** try to login to **bastion**{{code language="none"}}{{/code}}, **desy-ps-ext**{{code language="none"}}{{/code}}, or **max-display**{{code language="none"}}{{/code}} using one of the functional accounts.
28 +{{/info}}
28 28  
30 +== Maxwell cluster ==
29 29  
30 -\\
32 +The extensive documentation can be found at [[Maxwell Cluster>>url:https://confluence.desy.de/display/IS/Photon+Science+on+Maxwell||rel="nofollow" shape="rect"]]
33 +
34 +In particular we want to mention the option [[doc:IS.JupyterHub on Maxwell]] , available [[doc:IS.Software]] , for more advanced computing demands [[doc:IS.Running Jobs on Maxwell]]