Multiprocessing produce different results in each run.

Awaiting user input

Sanjeev Bhurtyal

September 19, 2021 23:19

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I used the following code for multiprocessing, but it gives different results in each run. Am I doing something wrong?

import multiprocessing as mp
import gurobipy as gp

def solve_model(input_data):
    with gp.Env() as env, gp.Model(env=env) as model:
        #read model from LP file
        model.optimize()
        # retrieve data from model

if __name__ == '__main__':
    with mp.Pool() as pool:
        pool.map(solve_model, [input_data1, input_data2, input_data3]

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  June 23, 2025 02:47 Edited

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?.
• 

  Jaromił Najman

  • Gurobi Staff

  September 28, 2021 11:28 Edited

  Hi Sanjeev,

  Could you please try posting a minimal reproducible example (MRE)?

  Best regards,
  Jaromił

  0

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