# SCS Warning: (column pointers) not strictly increasing

**URL:** <https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563>\
**Category:** Optimization (Mathematical)\
**Tags:** question\
**Created:** [July 21, 2018, 4:29pm UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563 "2018-07-21T16:29:54Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![ccoffrin](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ccoffrin/32/400_2.png) [@ccoffrin](https://discourse.julialang.org/u/ccoffrin)\
**Post date:** [July 21, 2018, 4:29pm UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563/1 "2018-07-21T16:29:54Z")

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Does anyone know what would cause a JuMP (v0.18) model to result in SCS providing the following warning, “WARN: A-\>p (column pointers) not strictly increasing, column 1 empty”?

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**Author:** ![abulak](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/abulak/32/28314_2.png) [@abulak](https://discourse.julialang.org/u/abulak)\
**Post date:** [July 21, 2018, 9:55pm UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563/2 "2018-07-21T21:55:59Z")

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which version of SCS?

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**Author:** ![ccoffrin](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ccoffrin/32/400_2.png) [@ccoffrin](https://discourse.julialang.org/u/ccoffrin)\
**Post date:** [July 21, 2018, 10:23pm UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563/3 "2018-07-21T22:23:18Z")

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SCS.jl v0.3.3, which I believe uses SCS version 2.0.2

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**Author:** ![abulak](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/abulak/32/28314_2.png) [@abulak](https://discourse.julialang.org/u/abulak)\
**Post date:** [July 22, 2018, 11:07am UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563/4 "2018-07-22T11:07:20Z")

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hmm, that is strange, I’ve seen such problems on 1.2.6, but I was quite sure that since 2.0.2 (or rather since [https://github.com/JuliaOpt/SCS.jl/pull/91](https://github.com/JuliaOpt/SCS.jl/pull/91)) this has been fixed. Did You `rm deps.jl downloads src usr` in `~/.julia/0.6/SCS/deps/` and `Pkg.build("SCS")` afterwards?

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**Author:** ![miles.lubin](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/miles.lubin/32/279_2.png) [@miles.lubin](https://discourse.julialang.org/u/miles.lubin)\
**Post date:** [July 22, 2018, 1:00pm UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563/5 "2018-07-22T13:00:36Z")

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Afaik there’s no released version of SCS.jl that uses SCS 2.x. It’s blocked because we don’t have binaries.

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**Author:** ![abulak](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/abulak/32/28314_2.png) [@abulak](https://discourse.julialang.org/u/abulak)\
**Post date:** [July 23, 2018, 1:53pm UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563/6 "2018-07-23T13:53:13Z")

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Who should we poke for Windows and Mac libraries?

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**Author:** ![miles.lubin](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/miles.lubin/32/279_2.png) [@miles.lubin](https://discourse.julialang.org/u/miles.lubin)\
**Post date:** [July 23, 2018, 2:16pm UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563/7 "2018-07-23T14:16:28Z")

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We need a [BinaryBuilder](https://github.com/JuliaPackaging/BinaryBuilder.jl) script for SCS. (More than just poking.)

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**Author:** ![ccoffrin](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ccoffrin/32/400_2.png) [@ccoffrin](https://discourse.julialang.org/u/ccoffrin)\
**Post date:** [October 6, 2018, 3:48pm UTC](https://discourse.julialang.org/t/scs-warning-column-pointers-not-strictly-increasing/12563/8 "2018-10-06T15:48:26Z")

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Update. This warning appears twice in [PowerModels.jl tests](https://travis-ci.org/lanl-ansi/PowerModels.jl/jobs/437871059), with SCS.jl v0.4.0 which uses SCS v2.0.2.