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90% of Ipopt run time is spent in Hessian/constraints evaluation, very little time in linear solver. Is it normal?
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11
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567
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April 18, 2026
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Get Lagrange multipliers from Ipopt with Optimization.jl
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1
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109
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November 24, 2025
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Min max Ipopt opti : error in step computation
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6
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274
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September 22, 2025
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Quickest way to build solution sensitivity information from Ipopt (sIpopt)
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1
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129
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September 6, 2025
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IPOPT Watchdog Iterations Tracking
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2
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96
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May 19, 2025
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Specifying the Hessian for some (but not all) user-defined operators
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2
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93
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May 6, 2025
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Can Ipopt provide a dual bound?
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2
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94
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April 24, 2025
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Warm starting Ipopt with higher discretization points
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8
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346
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April 23, 2025
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Ipopt does NOT memorize a best solution found so far
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7
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281
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April 23, 2025
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Error with Ipopt.jl and ipopt.out file
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3
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131
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April 2, 2025
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Solving large scale NLP problem on HPC cluster
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5
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274
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March 25, 2025
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Ipopt's "local" optimum can be very substandard
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8
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294
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March 23, 2025
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The solution deteriorates if the domain of decisions is improperly set when using Ipopt
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4
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171
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March 15, 2025
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Restrictions when adding a binary variable - Local Infeasibility (Ipopt, Juniper)
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15
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423
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January 23, 2025
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Limiting step size in optimization variable between optimization steps of nonlinear constrained optimization problem
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4
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206
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August 20, 2024
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How to speed up ipopt with HSL ma86 using parallel processing
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7
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694
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July 30, 2024
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Struggle at large scale problem of nlp using ipopt
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10
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470
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June 26, 2024
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User defined gradient in JuMP with Ipopt: gradient with user data
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3
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201
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June 26, 2024
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Nonlinear Least Squares Millions of Allocations
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9
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649
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June 15, 2024
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Trajectory Optimization using Pseudospectral collocation
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10
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1062
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May 30, 2024
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How to get HSL up and running with Ipopt
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6
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973
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May 11, 2024
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Nonlinear Optimization with Many Constraints + Autodifferentiation: Which Julia Solution?
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23
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1180
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March 15, 2024
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Use of integer variables Juniper Error (MI-NLP)
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2
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209
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March 14, 2024
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Long NLP evaluation time in Ipopt
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6
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602
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February 14, 2024
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Converting non-linear optimization with fmincom from Matlab to Julia
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12
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1313
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November 23, 2023
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How to set a Non-linear function with double summatory
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4
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331
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October 29, 2023
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Is there a Symbolics.jl interface to Ipopt (or similar)?
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17
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944
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June 14, 2023
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Callback function in IPOP for catching inner iterations
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1
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295
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May 4, 2023
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Nested Sum in NLObjective -
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2
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258
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March 31, 2023
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Set_start_value to reduce iterations
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1
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269
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March 29, 2023
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