Multiple objectives and compute server

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Julien Dubost

2023年10月24日 14:23

Hi

We noticed that mutliple objectives environment parameters are not reflected in the .mps nor the .prm files, for example using your documentation, if we do :

  env0 = model.getMultiobjEnv(0)
  env1 = model.getMultiobjEnv(1)

  env0.setParam('TimeLimit', 100)
  env1.setParam('TimeLimit', 10)


  model.write("input.mps")
  model.write("input.prm")

=> Nor the .mps or .prm file contains the env0 or env1 time limits. It's maybe no problem for a local execution but we were wondering if the compute server is aware of this (we do not using it currently so we can't make any tests)

As well, we will be happy to know your minds about having these parameters reflected in .prm file.

Thanks a lot for your support.

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Simranjit Kaur

Gurobi Staff

2026年11月13日 01:35
This post is more than two 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 try Gurobot, our chatbot interface offering instant, expert-level support.
Alison Cozad

Gurobi Staff

2023年10月24日 16:23
Hi Julien,

You can write out the parameter file for each environment separately using the Env.writeParams() function. Here is an example,
```
env0.writeParams("params_from_env0.prm")
env1.writeParams("params_from_env1.prm")
```
Happy to discuss this topic further.

Also, I noticed that you are one of our commercial customers. You can reach out directly to the Gurobi Expert Team directly as part of your support. To reach us, you can create a help request at support.gurobi.com. For more details about the support that Gurobi offers, please see Gurobi Experts Technical Advisory & Support Team.
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Julien Dubost

2023年10月25日 07:53 編集済み
Hi,
Thanks for your reply, i missed this method.
I tested and i can write and read params which is what i was seeking for.
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Alison Cozad

Gurobi Staff

2023年10月25日 12:39
Great to hear it helped!
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