# \#omeinsum

**URL:** https://discourse.julialang.org/tag/omeinsum/1147.md

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## [About the additional memory allocation that appears in the OMEinsum package](https://discourse.julialang.org/t/about-the-additional-memory-allocation-that-appears-in-the-omeinsum-package/87938)

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**Author:** [@F-YF](https://discourse.julialang.org/u/F-YF)\
**Replies:** 2\
**Last updated:** [September 29, 2022, 2:40am UTC](https://discourse.julialang.org/t/about-the-additional-memory-allocation-that-appears-in-the-omeinsum-package/87938 "2022-09-29T02:40:20Z")

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julia\> using OMEinsum julia\> a=rand(1024,1024); julia\> b=rand(1024,1024,2); julia\> using BenchmarkTools julia\> @btime ein"xy,yzw-\>xzw"(a,b); 23.790 ms (77 allocations: 16.00 MiB) julia\> @btime ein"yx,yzw-\>xzw"(a,b…