# \#sdp

**URL:** https://discourse.julialang.org/tag/sdp/1155.md

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## [SLOW\_PROGRESS or NUMERICAL\_ERROR: a simple but nontrivial SDP example, solved with LP relaxation](https://discourse.julialang.org/t/slow-progress-or-numerical-error-a-simple-but-nontrivial-sdp-example-solved-with-lp-relaxation/127399)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 8\
**Last updated:** [May 11, 2025, 10:04am UTC](https://discourse.julialang.org/t/slow-progress-or-numerical-error-a-simple-but-nontrivial-sdp-example-solved-with-lp-relaxation/127399 "2025-05-11T10:04:38Z")

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I wonder why mosek cannot solve this simple problem to optimality (it reports SLOW\_PROGRESS). x-ref \[docs\] improve the docstring for DUAL\_INFEASIBLE by odow · Pull Request #2701 · jump-dev/MathOptInterface.jl · GitHub i…

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## [SumOfSquares on a variety, inspecting the multipliers](https://discourse.julialang.org/t/sumofsquares-on-a-variety-inspecting-the-multipliers/112574)

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**Author:** [@votroto](https://discourse.julialang.org/u/votroto)\
**Replies:** 6\
**Last updated:** [April 9, 2024, 12:54pm UTC](https://discourse.julialang.org/t/sumofsquares-on-a-variety-inspecting-the-multipliers/112574 "2024-04-09T12:54:30Z")

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Is it possible with SumOfSquares to inspect the multipliers of the polynomial decomposition? Let’s say I have a poly p and I wish to maximize it over a variety F defined by polys f\_i,..,f\_n. I assume internally the cons…

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## [Convex.jl for SDP](https://discourse.julialang.org/t/convex-jl-for-sdp/111474)

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**Author:** [@iHany](https://discourse.julialang.org/u/iHany)\
**Replies:** 2\
**Last updated:** [March 12, 2024, 4:01am UTC](https://discourse.julialang.org/t/convex-jl-for-sdp/111474 "2024-03-12T04:01:56Z")

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I am trying to follow up \[1, Example 1\]. This involves semidefinite programming described in Corollary 1: The following is what I’ve tried, and basically I think I need some specialized syntax for SDP. Trial Code us…

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## [Out of memory when constructing large sparse SDP in JuMP](https://discourse.julialang.org/t/out-of-memory-when-constructing-large-sparse-sdp-in-jump/98332)

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**Author:** [@mattgiamou](https://discourse.julialang.org/u/mattgiamou)\
**Replies:** 2\
**Last updated:** [May 9, 2023, 8:17am UTC](https://discourse.julialang.org/t/out-of-memory-when-constructing-large-sparse-sdp-in-jump/98332 "2023-05-09T08:17:29Z")

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I need to solve large but very sparse SDPs with COSMO.jl. The following code runs out of memory while constructing the linear matrix inequality (i.e., the PSD constraint): using JuMP, COSMO using LinearAlgebra using Spa…

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## [Cannot convert QuadExpr - error in Julia v1.7 but not v.1.8 with PSDCone()](https://discourse.julialang.org/t/cannot-convert-quadexpr-error-in-julia-v1-7-but-not-v-1-8-with-psdcone/91202)

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**Author:** [@malmassa](https://discourse.julialang.org/u/malmassa)\
**Replies:** 1\
**Last updated:** [December 4, 2022, 7:40pm UTC](https://discourse.julialang.org/t/cannot-convert-quadexpr-error-in-julia-v1-7-but-not-v-1-8-with-psdcone/91202 "2022-12-04T19:40:05Z")

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Hi all, I teach a course on convex optimization and use Julia/JuMP (along with Matlab/CVX) to introduce students to implementation aspects – however, I am not a super-user of Julia/JuMP and may be missing something obvi…

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## [Semidefinite programming with BigFloat](https://discourse.julialang.org/t/semidefinite-programming-with-bigfloat/88513)

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**Author:** [@greatpet](https://discourse.julialang.org/u/greatpet)\
**Replies:** 1\
**Last updated:** [October 10, 2022, 11:09pm UTC](https://discourse.julialang.org/t/semidefinite-programming-with-bigfloat/88513 "2022-10-10T23:09:52Z")

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I’m looking at the package SDPAFamily.jl which provides access to arbitrary-precision semidefinite programming solvers. The README says that the JuMP interface does not support BigFloat. Is it still possible to somehow u…