# JuMP 0.19, Ipopt.Optimizer and MA57

**URL:** <https://discourse.julialang.org/t/jump-0-19-ipopt-optimizer-and-ma57/21099>\
**Category:** New to Julia\
**Created:** [February 22, 2019, 9:47pm UTC](https://discourse.julialang.org/t/jump-0-19-ipopt-optimizer-and-ma57/21099 "2019-02-22T21:47:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Tims\_Corbett](https://avatars.discourse-cdn.com/v4/letter/t/2bfe46/32.png) [@Tims\_Corbett](https://discourse.julialang.org/u/Tims_Corbett)\
**Post date:** [February 22, 2019, 9:47pm UTC](https://discourse.julialang.org/t/jump-0-19-ipopt-optimizer-and-ma57/21099/1 "2019-02-22T21:47:52Z")

</div>

How do I specify MA57 solver in the revised syntax with JuMP 0.19?  
model=Model(with\_optimizer(Ipopt.Optimizer))

Thanks!