solver-a | Write classes for solving equations
kandi X-RAY | solver-a Summary
kandi X-RAY | solver-a Summary
Write classes for solving equations
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QUESTION
I'm trying to optimise multiple linear programming problems in parallel using Pyomo
and the standard Python multiprocessing
library. When switching to using multi-processing I keep running into the error: ValueError: Cannot load a SolverResults object with bad status: error
.
A similar issue was reported in this question, where their problem seemed to be that the solver (n.b. they used cbc whereas I used cplex) was timing out and couldn't gracefully quit. This doesn't seem to be the issue with my error though. One guess is that the cplex solver is trying to write to a temporary file that is then getting overwritten by the parallel optimisations.
Any help fixing this error would be much appreciated! The following code should reproduce the error.
...ANSWER
Answered 2022-Jan-09 at 10:51A solution to the overall problem (but not this specific error) was to use glpk
solver from here.
QUESTION
I have a Walk/Bridge between a beginning balance (BB) and an ending balance (EB): E.g.
...ANSWER
Answered 2020-Feb-19 at 13:43The adjustment =CEB - SUM(BB, Plus, Minus)
or using your numbers =50-SUM(100,30,-50)
Then EB = SUM (BB, Plus,minus,adjustment)
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