# \#bumper

**URL:** https://discourse.julialang.org/tag/bumper/1542.md

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## [How best to preallocate memory for repeated use](https://discourse.julialang.org/t/how-best-to-preallocate-memory-for-repeated-use/130814)

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**Author:** [@Joris\_Pinkse](https://discourse.julialang.org/u/Joris_Pinkse)\
**Replies:** 5\
**Last updated:** [July 22, 2025, 4:21pm UTC](https://discourse.julialang.org/t/how-best-to-preallocate-memory-for-repeated-use/130814 "2025-07-22T16:21:41Z")

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Hello, I’m trying to reduce memory allocations. The pattern is simple: I need to redo a similar problem that requires a fair bit of memory many times. So I’m preallocating sufficient memory for the largest problem and…

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## [How to write a multi-threaded reduction using Bumper.jl?](https://discourse.julialang.org/t/how-to-write-a-multi-threaded-reduction-using-bumper-jl/110314)

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**Author:** [@Ahmed\_Salih](https://discourse.julialang.org/u/Ahmed_Salih)\
**Replies:** 10\
**Last updated:** [February 18, 2024, 12:52pm UTC](https://discourse.julialang.org/t/how-to-write-a-multi-threaded-reduction-using-bumper-jl/110314 "2024-02-18T12:52:10Z")

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Hello! I am trying to see if I can get a multithreaded reduction to work using Bumper.jl but my results are a bit embaressing… I can’t seem to get it to work and I don’t think it is using all my threads… The code snippe…