# Extremely high first call latency Julia 1.6 versus 1.5 with multiphysics PDE solver

**URL:** <https://discourse.julialang.org/t/extremely-high-first-call-latency-julia-1-6-versus-1-5-with-multiphysics-pde-solver/71692>\
**Category:** Performance\
**Tags:** question\
**Created:** [November 17, 2021, 11:33pm UTC](https://discourse.julialang.org/t/extremely-high-first-call-latency-julia-1-6-versus-1-5-with-multiphysics-pde-solver/71692 "2021-11-17T23:33:43Z")\
**Posts on this page:** 1\
**Showing post:** 21

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**Author:** ![amartinhuertas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/amartinhuertas/32/30886_2.png) [@amartinhuertas](https://discourse.julialang.org/u/amartinhuertas)\
**Post date:** [November 26, 2021, 7:29am UTC](https://discourse.julialang.org/t/extremely-high-first-call-latency-julia-1-6-versus-1-5-with-multiphysics-pde-solver/71692/21 "2021-11-26T07:29:40Z")

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> Would it be possible to simplify the code (i.e. parameters like grid size, number of equations etc.) in Julia 1.5 to run in say seconds instead of minutes? I’d expect a MWE on Julia 1.6 to run in minutes instead of hours then, which might simplify things for analysis.

There is this post. [How to cut down compile time when inference is not the problem?](https://discourse.julialang.org/t/how-to-cut-down-compile-time-when-inference-is-not-the-problem/59077) However, I do not actually know if there is actually relation among the causes underlying the observations in this thread and the one at that thread.

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