Bugs
From OpenOpt
| Bug | Is already fixed in subversion repository |
|---|---|
| some rarely encountered bugs for ipopt, ralg, maybe other nonlinear solvers | Yes |
| A bug with incorrect shape that sometimes triggers from CVXOPT-connected solvers (e.g. cvxopt_lp, glpk) | Yes |
| Sometimes OpenOpt incorrectly renders FuncDesigner linear constraints (typo "vstack" instead of "hstack"). Maybe, sometimes it triggers with other automatic differentiation results for nonlinear constraints. | Yes |
| cvxopt_lp and glpk incorrectly handle OpenOpt (not FuncDesigner) problems where some variables are fixed via lb[i] = ub[i] | Yes |
| Bug | Is already fixed in subversion repository |
|---|---|
| User-supplied args for OpenOpt problems sometimes are not available | Yes |
| Parameter searchDirectionStrategy of solver de set to "best" yields error | Yes |
| Bug in non-linear problems group | Yes |
| NameError: global name 'isspmatrix' is not defined (in ooMisc.py for some problems/solvers) | Yes |
| ralg badly handles problems with nonlinear equality constraints (compared to previous releases) | Yes (some improvements) |
| Bug | Is already fixed in subversion repository |
|---|---|
| numpy.array operations with FuncDesigner oofuns/oovars | Yes |
| If scipy is not installed then importing from openopt may be failed | Yes |
| FuncDesigner sometimes yields the error "blocks must have rank 2" | Yes |
| Sometimes ipopt wrapper fails on FD model with "blocks must have rank 2" | Yes |
| Bug | Is already fixed in subversion repository |
|---|---|
| ralg incorrectly handles problems with number of linear equality constraints more than 1 | Yes |
| FuncDesigner function sum() sometimes yield incorrect derivative (hence it affects optimization of FD models where the function is used) | Yes |
| FuncDesigner function sin() yields incorrect value | Yes |
| scipy_slsqp incorrectly handles box-bound constraints lb <= x <= ub if some lb or ub coords are +/- inf | Yes |
| Bug | Is already fixed in subversion repository |
|---|---|
| Sometimes some solvers fail with error message "instance has no attribute 'x'" | Yes |
| Bug | Is already fixed in subversion repository |
|---|---|
| Incorrect handling of A, Aeq constraints by scipy_slsqp provided c, h are absent | Yes |
| scipy_cobyla, sometimes incorrect handling of nonlinear equality constraints h(x)=0 | Yes |
| Incorrect handling of several constraints R^nvars -> R by NLP/NSP solver ralg | Yes |
| A bug for named variables syntax | Yes |
| sometimes lpSolve reports "solution is not feasible" while it is feasible | Yes |
Known bugs for release 0.21
| Bug | Is already fixed in subversion repository |
|---|---|
| "python setup.py develop" works but "python setup.py install" doesn't work | Yes |
| NLLSP works incorrectly if no user-supplied gradient is provided | Yes |
| Matplotlib warning /usr/lib/python2.5/site-packages/matplotlib/axes.py:5047: DeprecationWarning: replace "faceted=False" with "edgecolors='none'" | Yes |
