Warning : The Lab instance on CINECA will be unavailable today from 16:00 CEST (my timezone) for up to 15 minutes for maintenance. The JSC instance will remain operational during this period.


Changes for page Troubleshooting

Last modified by kindler on 2025/05/14 16:54
From version 22.1
edited by kindler
on 2021/07/02 08:43
Change comment: There is no comment for this version
To version 26.1
edited by kindler
on 2021/10/21 16:50
Change comment: There is no comment for this version

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30 30  
31 31  [[image:1623846323177-898.png||height="287" width="350"]]
32 32  
33 +
34 +=== Test jobs make problems at Jülich ===
35 +
36 +Since August 2021 accessing the "Lab" link in the left hand navigation menu brings up a new site selection menu:
37 +
38 +[[image:Screenshot 2021-08-30 at 19.00.59.png||height="252" width="300"]]
39 +
40 +Via choosing a different lab execution site it is be possible to choose a specific site, if there are specific needs for the created Jupyter virtual machine for a given task (e.g. a large memory requirement). Currently all the examples do not need any site specific features, so you can select in principle any site. BUT (as of end of August 21) there is a sporadic problem with the NMPI communication, if running at Jülich. Thus for now, please use CSCS as the primary execution site.
41 +
42 +
43 +=== BrainScaleS-2 inhibitory synapse weights ===
44 +
45 +21 October 2021: the pyNN version for BrainScaleS has been updated. Since then, inhibitory synapse weights need to negative numbers, otherwise the error message:   
46 +
47 + "pyNN.errors.ConnectionError: Weights must be negative for current-based, inhibitory synapses"
48 +
49 +will be created (visibie in the .out file created by the job. In the notebook interface the error message can be, that the file needed for plotting is missing).
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33 33  == BrainScaleS specific tips ==
34 34  
35 35  The [[BrainScaleS external user chat>>https://chat.bioai.eu/external-users/channels/town-square]] has service announcements (e.g. when a system is down due to maintenance) and is also a good place to ask general questions.
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49 49  Currently (2 July 2021) the default-system ("wafer 33") is under maintenance. Please see the [[BrainScaleS-1 chat>>https://chat.bioai.eu/external-users/channels/brainscales]] for updates.
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Screenshot 2021-08-30 at 19.00.59.png
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1 +XWiki.kindler
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