How to set the output time to be displayed as a real number.

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Imanaga Tomohiro

2021年07月09日 09:03

Is there a setting to display the time in milliseconds or microseconds during the search in Gurobi?

By default, it only shows the time in seconds, like this

Nodes | Current Node | Objective Bounds | Work

Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time

0 0 509.00000 0 1018 351.00000 509.00000 45.0% - 0s

H 0 0 352.0000000 509.00000 44.6% - 0s

H 0 0 359.0000000 509.00000 41.8% - 0s

H 0 0 363.0000000 509.00000 40.2% - 0s

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Simranjit Kaur

Gurobi Staff

2025年06月23日 02:52 編集済み
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

2021年07月09日 11:52 編集済み
Hi,

Currently there is no such option. If you are using an API to call Gurobi, you can define a callback, e.g., the MESSAGE callback, and retrieve the solution time via the RUNTIME \(\texttt{what}\) attribute by using the cbGet function.

A short example in Python would be
```
def mycallback(model, where):
  if where == GRB.Callback.MESSAGE:
    print(model.cbGet(GRB.Callback.RUNTIME))

[...]
model.optimize(mycallback)
```
Best regards,
Jaromił
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