Assia Kamal-idrissi
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Latest activity by Assia Kamal-idrissi-
Assia Kamal-idrissi commented,
I tested on otehr machine. I takes more time to display licence of Gurobi. Here is the data:NAME : P-n40-k5COMMENT : (Augerat et al, Min no of trucks: 5, Best value: 458)TYPE : CVRPDIMENSION : 40ED...
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Assia Kamal-idrissi commented,
I figure out that the license will finish by Oct 7, 2024. Is the issue related to the fact that the license will expire very soon? Thank you Assia
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Assia Kamal-idrissi commented,
I'm using the same model object and same data. Here is the model: def CVRP(df,time_matrix_truck,customers, nodes, trucks, truck_capacity): mdl = Model('CVRP3') arc_k = {(i, j , k) for i in no...
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Assia Kamal-idrissi commented,
Im' using the same version of Gurobi which 10.0.3. I'm trying to reexecute the same program in machine with 56 Threads and 500 GB. Its staks in reading the license. Afther that, I got the message "...
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Assia Kamal-idrissi created a post,
Building MIP Model GurobiPy become slow
AnsweredHi, I'm trying to rerun the same model in Gurobipy in the same machine but it takes a lot of time to build it and after several minutes I got the error "out of memory". However, I used to run the s...
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Assia Kamal-idrissi created a post,
Running time increase when running multiple models
AnsweredHello, I'm running the same model for different instances files in separated files independently using Jupyter. For each instance, I run the model 5 times with time limit 3600 for each iteration. S...
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Assia Kamal-idrissi commented,
Thank you for clarifying the formulation. I will add your suggestion. Meanwhile, I try to formulate it as follows: arc_k = {(i, j) for i in nodes for j in nodes if i != j} xx= mdl.addVars(arc_k, vt...
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Assia Kamal-idrissi commented,
Hi Ronald, Thank you so much for your help. I got the following status: Model is infeasible Best objective -, best bound -, gap - Set parameter TimeLimit to value 3600 No optimal solution found run...
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Assia Kamal-idrissi created a post,
Enforce binary variable to zero when the sum is negative
Awaiting user inputHi, I'm trying to model the CVRP problem with flow formulation. I'm working with two fleets where the capacity of one can be less than the demand of the customer in some cases (fleet with capacity ...
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Assia Kamal-idrissi commented,
Hi Elisabeth, Thank you for this explanation. By setting Threads to 0, it takes more than 8812s to get the optimal result. However, the optimal result can be retrieved in the following line with 19...