# \#parallel

**URL:** https://brian.discourse.group/tag/parallel/27.md

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## [Error while running parallel standalone simulation in Brian2?](https://brian.discourse.group/t/error-while-running-parallel-standalone-simulation-in-brian2/1482)

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**Author:** [@Jeevan\_codes8580](https://brian.discourse.group/u/Jeevan_codes8580)\
**Replies:** 4\
**Last updated:** [1 September 2025 15:48 UTC](https://brian.discourse.group/t/error-while-running-parallel-standalone-simulation-in-brian2/1482 "2025-09-01T15:48:08Z")

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Description of problem I have a simulation that runs fine without the cpp\_standalone parallelization. However, if I do that with parallelization described here, it throws error. What am I doing wrong ? …

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## [Standalone object oriented simulator implementation not working with joblib](https://brian.discourse.group/t/standalone-object-oriented-simulator-implementation-not-working-with-joblib/1464)

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**Author:** [@danielmk](https://brian.discourse.group/u/danielmk)\
**Replies:** 3\
**Last updated:** [17 June 2025 07:59 UTC](https://brian.discourse.group/t/standalone-object-oriented-simulator-implementation-not-working-with-joblib/1464 "2025-06-17T07:59:58Z")

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Description of problem I have a functioning standalone simulator but it does not work with joblib because my simulator is implemented in an object oriented way. I am trying to figure out how to make it work without compl…

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## [Number of running openmp threads dependence on running timing](https://brian.discourse.group/t/number-of-running-openmp-threads-dependence-on-running-timing/1341)

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**Author:** [@DavidKing2020](https://brian.discourse.group/u/DavidKing2020)\
**Replies:** 3\
**Last updated:** [4 December 2024 16:31 UTC](https://brian.discourse.group/t/number-of-running-openmp-threads-dependence-on-running-timing/1341 "2024-12-04T16:31:12Z")

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Description of problem In the following example, the number of threads is set to be 5. When running time is large, e.g. brian2.run(1000\*brian2.second), all 5 threads run at the same time. When running time is low, e.g. …

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## [Error while using brian2 parallelization on Linux cluster](https://brian.discourse.group/t/error-while-using-brian2-parallelization-on-linux-cluster/1328)

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**Author:** [@Jeevan\_codes8580](https://brian.discourse.group/u/Jeevan_codes8580)\
**Replies:** 3\
**Last updated:** [19 November 2024 09:32 UTC](https://brian.discourse.group/t/error-while-using-brian2-parallelization-on-linux-cluster/1328 "2024-11-19T09:32:01Z")

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Description of problem I have a running Brian2 code parallelized using set\_device(‘cpp\_standalone’, build\_on\_run=False) : which runs perfectly on my Ubuntu 24.04 system . Now I need to run the same on a linux cluster f…

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## [Accelerating brian2cuda simulation](https://brian.discourse.group/t/accelerating-brian2cuda-simulation/938)

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**Author:** [@lparr](https://brian.discourse.group/u/lparr)\
**Replies:** 1\
**Last updated:** [19 March 2023 11:55 UTC](https://brian.discourse.group/t/accelerating-brian2cuda-simulation/938 "2023-03-19T11:55:29Z")

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Does brian2cuda automatically exploit 100% of the GPU power or there are some better practices such as setting particular preferences to speed up the simulation? At the present time, I am using only this line of code: s…

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## [TypeError: cannot pickle 'sqlite3.Connection' object when running Ray Tune with Jupyter notebook script](https://brian.discourse.group/t/typeerror-cannot-pickle-sqlite3-connection-object-when-running-ray-tune-with-jupyter-notebook-script/835)

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**Author:** [@DavidKing2020](https://brian.discourse.group/u/DavidKing2020)\
**Replies:** 1\
**Last updated:** [17 November 2022 20:52 UTC](https://brian.discourse.group/t/typeerror-cannot-pickle-sqlite3-connection-object-when-running-ray-tune-with-jupyter-notebook-script/835 "2022-11-17T20:52:07Z")

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Description of problem I got an “TypeError: cannot pickle ‘sqlite3.Connection’ object” error when running the attached Ray Tune code. The code need to import a notebook script called ttt.ipynb. Such an error won’t show…