# JuliaDiffEq Vern9() solver taking too long

**URL:** <https://discourse.julialang.org/t/juliadiffeq-vern9-solver-taking-too-long/27970>\
**Category:** General Usage\
**Tags:** question\
**Created:** [August 25, 2019, 9:04pm UTC](https://discourse.julialang.org/t/juliadiffeq-vern9-solver-taking-too-long/27970 "2019-08-25T21:04:47Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![Prince\_Mahajan](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/prince_mahajan/32/9954_2.png) [@Prince\_Mahajan](https://discourse.julialang.org/u/Prince_Mahajan)\
**Post date:** [August 26, 2019, 5:09pm UTC](https://discourse.julialang.org/t/juliadiffeq-vern9-solver-taking-too-long/27970/9 "2019-08-26T17:09:09Z")

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Yes after updating to kernel 1.2.0, I am seeing much better results. Thanks for all the replies.

If anyone is interested, here are the new results for a bunch of solvers (compared to [FLINT](https://github.com/princemahajan/FLINT)). I ran the script 3 times and these are the numbers from the third run on my computer. Of course, these results apply to this particular set of differential equations and initial conditions.

> tol: 1.0e-11  
> Computational time in seconds

- DOPRI5: 1.38711e+01 (vs 2.19 Fortran)
- DP5: 6.26217e+00 (-do-)
- TSIT5: 7.09554e+00 (-do-)
- DOP853: 3.98887e+00 (vs 0.73 Fortran)
- DP8: 3.54820e+00 (-do-)
- Vern6: 5.17847e+00 (vs 2.0 in Fortran)
- Vern9: 5.01823e+00 (vs 0.98 in Fortran)

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