Changes for page Troubleshooting

Last modified by kindler on 2025/05/14 16:54
From version 38.1
edited by kindler
on 2022/01/27 09:53
Change comment: There is no comment for this version
To version 49.1
edited by kindler
on 2024/10/08 13:40
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -4,6 +4,10 @@
4 4  (% class="wikigeneratedid" %)
5 5  For more information on the Collaboratory, please seee the [[documentation of the EBRAINS Collaboratory environment>>https://wiki.ebrains.eu/bin/view/Collabs/the-collaboratory/]].
6 6  
7 +== Temporary problems ==
8 +
9 +Currently none known.
10 +
7 7  == Jupyter notebook environment ("Lab") related ==
8 8  
9 9  === Error message "Error in Authenticator.pre_spawn_start: ... 401: Unauthorized" ===
... ... @@ -33,19 +33,20 @@
33 33  [[image:1623846323177-898.png||height="287" width="350"]]
34 34  
35 35  
36 -=== Test jobs make problems at Jülich ===
40 +=== Error message: "Could not identify EBRAINS kernel " ===
37 37  
38 -Since August 2021 accessing the "Lab" link in the left hand navigation menu brings up a site selection menu:
42 +If your notebook shows "RuntimeError: Could not identify EBRAINS kernel (probably too old version). Please select the appropriate kernel EBRAINS_experimental_release.": Please check, whether an EBRAINS kernel has been selected as kernel for the notebook execution.  In the example screenshot below the "Python 3 (ipykernel)" has been used, as shown in the upper right hand corner of the tab with the notebook.
39 39  
40 -[[image:Screenshot 2021-08-30 at 19.00.59.png||height="252" width="300"]]
44 +[[image:1666184857320-440.png]]
41 41  
42 -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. The "safe choice" is to use CSCS as the primary execution site.
43 43  
47 +Fix: click the current kernel name to get the kernel selection dialog box and select the "EBRAINS_experimental_release" kernel (blue highlight in the screenshot shown below):
44 44  
45 -=== ===
49 +[[image:image-20221019150927-1.png]]
46 46  
51 +=== Import error for hbp_service_client ===
47 47  
48 -
53 +The hbp_service_client was needed for the now not-existing-any-longer Collaboratory version 1. The import line can be deleted from scripts.
49 49  
50 50  == BrainScaleS-2 specific ==
51 51  
... ... @@ -88,6 +88,10 @@
88 88  
89 89  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.
90 90  
96 +=== Jobs for wafer 33 fail with "Slurm execution failed with state CANCELLED by 0" ===
97 +
98 +Wafer 33 is currently (August 2023) not available for use from the EBRAINS Collaboratory via the NMPI batch system. Please use wafer 30 instead.  The copy template for the example job has been updated to use wafer 30.
99 +
91 91  === //PyMarocco.None// needs to be changed to //PyMarocco.Without (Nov 2021)// ===
92 92  
93 93  November 2021: //marocco.backend = PyMarocco.None// had to be changed to //marocco.backend = PyMarocco.Without// due to the move to Python3, which has None as a reserved keyword. See also [[this FAQ entry in the guidebook>>https://electronicvisions.github.io/hbp-sp9-guidebook/pm/using_pm_newflow.html#rename-pymarocco-none-to-pymarocco-without]].
... ... @@ -101,4 +101,8 @@
101 101  
102 102  There are also some additional Python3 related changes in the brainscales_system_chain_test.py example. Please find a [[working example script>>https://lab.ch.ebrains.eu/user-redirect/lab/tree/shared/NMC%20Collab%20copy%20template/BrainScaleS/BrainScaleS_01_Chain.ipynb]] in our [[copy-template Drive>>https://wiki.ebrains.eu/bin/view/Collabs/nmc-collab-copy-template/Drive]] (for copying into users collabs).
103 103  
104 -==== ====
113 +==== ====
114 +
115 +== Spikey ==
116 +
117 +Support for the use of spikey via the EBRAINS RI has been removed in fall 2024. We recommend to use the much more versatil BrainScaleS-2 interactive instead.
1666184857320-440.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.kindler
Size
... ... @@ -1,0 +1,1 @@
1 +80.1 KB
Content
image-20221019150927-1.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.kindler
Size
... ... @@ -1,0 +1,1 @@
1 +85.0 KB
Content