Timeline


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Dec 22, 2009:

11:31 PM Changeset [2036] by jwatson
Added "--solver-mipgap" option to the pyomo script, mirroring recent …
11:10 PM Changeset [2035] by jwatson
Added --scenario-mipgap option to PH script. Added _mipgap attribute …
11:08 PM Changeset [2034] by jwatson
Added ability to write the mipgap attribute (if not None) to the …
11:05 PM Changeset [2033] by jwatson
Adding "mipgap" attribute to the base solver class, mirroring the …
5:30 PM Changeset [2032] by jwatson
More readability improvements to the Benders example.
4:56 PM Changeset [2031] by jwatson
More prettification of the Benders example.
4:55 PM Changeset [2030] by jwatson
Added a "solve_all_instances" utility function to the solver manager …
11:52 AM Changeset [2029] by jwatson
Some fixes to the ef writer based on Bill's recent changes to …
11:50 AM Changeset [2028] by jwatson
Changed some references to "._model" to the new+improved ".model".
9:24 AM Changeset [2027] by wehart
Simplified the syntax for adding a constraint to a Constraint object.
1:27 AM Changeset [2026] by wehart
Attempting to update PH. I'm not sure if this works, since I don't …
1:23 AM Changeset [2025] by wehart
Reworking how components interact with models. Now, components can …

Dec 21, 2009:

12:22 PM Changeset [2024] by wehart
Added check to avoid printing an objective with an empty linear sum.

Dec 18, 2009:

6:38 PM Changeset [2023] by jwatson
Pyomo Benders example prettification and cleanup.
11:47 AM Changeset [2022] by wehart
Removing debugging IO
11:35 AM Changeset [2021] by wehart
Misc rework of exception management within Pyomo.
12:25 AM Changeset [2020] by wehart
Misc updates. Cleaning out old models that are no longer used. …

Dec 17, 2009:

11:59 PM Changeset [2019] by wehart
Misc fix. Adding symbol_map attribute. However, this isn't …
11:59 PM Changeset [2018] by wehart
Bug fix due to updates in results object.
11:34 PM Changeset [2017] by wehart
Preliminary rework of the amplbook2 examples.
9:48 PM Changeset [2016] by wehart
Adding helper functions that denote the number of constraints, …
9:33 PM Changeset [2015] by wehart
Adding tests to confirm that set/index dimensionality checks work as …
8:24 PM Changeset [2014] by wehart
Update to CPLEX baselines
6:32 PM Changeset [2013] by jwatson
Added fully-tested (whatever that means!) urc and lrc reduced-cost …
6:00 PM Changeset [2012] by jwatson
Some fixes to Benders example, identified when baseline-ing AMPL …
5:50 PM Changeset [2011] by wehart
A change in semantics for setting up dimen and dim. This change …
4:23 PM Changeset [2010] by wehart
Adding a transformation for eliminating fixed variables.
4:22 PM Changeset [2009] by wehart
Adding an 'index' attribute to variable value objects, which allows a …
4:21 PM Changeset [2008] by wehart
Adding helper functions for accessing constraints, variables and …
4:14 PM Changeset [2007] by wehart
Bug fix in output
10:06 AM Changeset [2006] by jwatson
Missed CPLEX.py in the transition from model _component[] to …
1:47 AM Changeset [2005] by wehart
Adding tests to exercise the Pyomo command-line. Reworked error …

Dec 16, 2009:

10:19 PM Changeset [2004] by wehart
1. Added --model-name option, which allos the specification of an …
1:17 AM Changeset [2003] by wehart
Adding default options to SolutionSet? object's call method. Thus, …
12:34 AM Changeset [2002] by wehart
Adding some tests to validate various types of output that are …
12:22 AM Changeset [2001] by wehart
Adding a plugin interface for model transformations. This can be …

Dec 14, 2009:

11:13 AM Changeset [2000] by wehart
Bug fix.
10:18 AM Changeset [1999] by wehart
Python 2.5 portability fixes.

Dec 13, 2009:

5:17 PM Changeset [1998] by jwatson
Changed references to _component to active_component.
5:17 PM Changeset [1997] by jwatson
Changing _component reference to active_component.
1:39 PM Changeset [1996] by wehart
JP's benders example with some misc edits. This runs, though I'm not …
1:32 PM Changeset [1995] by wehart
Adding a 'create_name' function that simplifies the setup of indexed …
1:01 PM Changeset [1994] by wehart
Initial setup of the PyomoModel?._name_conmap data structure. I've set …
1:57 AM Changeset [1993] by wehart
Adding support for component index deactivation. Again, this isn't …
1:33 AM Changeset [1992] by wehart
A rework of component management in Pyomo. This was initially started …
1:28 AM Changeset [1991] by wehart
Update to test baselines.

Dec 12, 2009:

3:29 PM Changeset [1990] by jwatson
Added code to throw a ValueError? exception when attempting to output a …
3:05 PM Changeset [1989] by jwatson
Fix to GLPK plug-in when parsing solution files that are time-limited.
1:43 PM Changeset [1988] by jwatson
More updates to the GLPK plug-in.
1:43 PM Changeset [1987] by jwatson
Missing an import of SolverStatus? enum in shellcmd.py, triggering an …
1:42 PM Changeset [1986] by jwatson
The new solution module re-work didn't define stoppedByLimit in the …
12:45 PM Changeset [1985] by jwatson
Modified PH to only use warm-starts if a solver has the capability!
12:43 PM Changeset [1984] by jwatson
CPLEX has warm-start capabilities - over-riding base OptSolver? query …
12:42 PM Changeset [1983] by jwatson
Added "warm_start_capable" query method to OptSolver? base class. …
1:37 AM Changeset [1982] by jwatson
Added MIP solution read capability to GLPK plugin. Now able to read …
1:04 AM Changeset [1981] by jwatson
Major re-work to GLPK interface, which was failing to read pretty much …
12:51 AM Changeset [1980] by jwatson
Added extraction of reduced-costs for variables in CBC plugin solution …

Dec 11, 2009:

12:23 AM Changeset [1979] by jwatson
Biggest enhancement: The efwriter command-line script now has the …

Dec 10, 2009:

11:29 PM Changeset [1978] by jwatson
Eliminated exception-handling logic when loading user-defined …

Dec 8, 2009:

7:06 PM Changeset [1977] by wehart
Eliminating some debugging IO
6:49 PM Changeset [1976] by wehart
A hack to make the default 'dimen' be 1 when computing the ndim for a …

Dec 7, 2009:

6:47 PM Changeset [1975] by wehart
Bug fix. The ProductExpression? was not correctly testing for …

Dec 6, 2009:

7:20 PM Changeset [1974] by wehart
Updating PyPI categories
6:26 PM Changeset [1973] by wehart
Merged revisions 1949-1972 via svnmerge from …
6:24 PM Changeset [1972] by wehart
Merged revisions 1948-1971 via svnmerge from …
6:24 PM Changeset [1971] by wehart
Merged revisions 1950-1970 via svnmerge from …
6:16 PM Changeset [1970] by wehart
Bug fix: don't print None values for reduced cost Updated cplex baselines.
5:53 PM Changeset [1969] by wehart
Bug fix for mock tests.
5:02 PM Changeset [1968] by wehart
Bug fix when an expression has no arguments.
5:00 PM Changeset [1967] by wehart
Creating the ComponentBase? class, which manages the initialization of …
2:31 PM Changeset [1966] by jwatson
Transferring the reduced-cost variable attributes (if present) in the …
2:26 PM Changeset [1965] by jwatson
Migrating reduced-cost reads for CPLEX SOL file format into svn.
1:19 PM Changeset [1964] by wehart
Adding tests that verify that index-generating functions can be …
12:01 PM Changeset [1963] by wehart
Reworking SetArray? constructor to create temporary set objects for …

Dec 5, 2009:

2:59 PM Changeset [1962] by wehart
Some changes to allow list comprehensions and generator expressions to …
2:46 AM Changeset [1961] by wehart
Documentation updates for sets.

Dec 4, 2009:

10:43 PM Changeset [1960] by jwatson
Fixed a major memory leak in the solver manager. When get_results() …
2:43 PM Changeset [1959] by wehart
Extended the constraint generation logic to evaluate whether the …
12:50 AM Changeset [1958] by wehart
Reverting the change in r1953, which causes an error in our unit tests.

Dec 3, 2009:

4:17 PM Changeset [1957] by dlwoodr
Documentation updates for pysp

Dec 2, 2009:

7:56 PM Changeset [1956] by jwatson
Added --scenario-solver-options and --ef-solver-options options to the …
7:55 PM Changeset [1955] by jwatson
Fixed missing StringIO module import.

Dec 1, 2009:

10:20 PM Changeset [1954] by jwatson
Extracting solver runtime for CPLEX solver plugin, at the request of …

Nov 25, 2009:

9:39 PM Changeset [1953] by jwatson
Improved error diagnostics relating to illegal/unexpected set …
10:54 AM Changeset [1952] by wehart
Merged revisions 1882-1951 via svnmerge from …
10:49 AM Changeset [1951] by wehart
Merged revisions 1886-1950 via svnmerge from …
10:48 AM Changeset [1950] by wehart
Merged revisions 1873-1949 via svnmerge from …
10:47 AM Changeset [1949] by wehart
Merged revisions 1863-1948 via svnmerge from …
10:47 AM Changeset [1948] by wehart
Merged revisions 1877-1947 via svnmerge from …
10:45 AM Changeset [1947] by wehart
Merged revisions 1867-1946 via svnmerge from …

Nov 24, 2009:

9:04 AM Changeset [1946] by wehart
Further fix to avoid parsing blank lines.
8:59 AM Changeset [1945] by wehart
Adding error checks.
1:12 AM Changeset [1944] by jwatson
Trapping errors during constraint construction that occur when users …

Nov 23, 2009:

2:45 PM Changeset [1943] by wehart
Bug fix: If Python version is < 2.6.4, then checkout Coopr Forum with …
1:38 PM Changeset [1942] by wehart
Update to allow commits to Coopr Forum projects. Updated installer …
1:30 PM Changeset [1941] by wehart
Bug fix when pico_convert is not available.
1:18 PM Changeset [1940] by wehart
Adding a Coopr vpy configuration that includes packages that are not …
1:08 PM Changeset [1939] by wehart
Update to solvers to use the new structure for managing the parsing of …
1:07 PM Changeset [1938] by wehart
Changes to clarify what solver outputs entail. Now, logfiles are …
11:46 AM Changeset [1937] by wehart
Adding explicit import of PyYAML, and corresponding logic to ignore …

Nov 22, 2009:

10:09 PM Changeset [1936] by wehart
Adding a test to verify that SolverResults? objects are pickleable.
10:09 PM Changeset [1935] by wehart
Changes to maek the results object pickl-able.
5:38 PM Changeset [1934] by jwatson
Fix to profiler option in PH.
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