Search found 3 matches
- 5 years ago
- Forum: Modeling
- Topic: Help needed with constraint formulation
- Replies: 0
- Views: 1699
Help needed with constraint formulation
What is the most efficient way to get a binary variable A(t), {t - is a time point} which is '1' when a process is running at time point t, otherwise 0. Given that Ts and Tf are the start and end time continuous variables for that process and Val(t) is a parameter which has the value of time at time...
- 5 years ago
- Forum: Modeling
- Topic: Running MIP Models bigger than 250GBs
- Replies: 3
- Views: 3212
Re: Running MIP Models bigger than 250GBs
Hi Miachel, Thanks for the insight. We will definitely try running a bit smaller version of the model as you suggested. However, I do need a bit of information on calculating memory required with the help of no. of variables and constraints. Is there any defined formula or technique where we input t...
- 5 years ago
- Forum: Modeling
- Topic: Running MIP Models bigger than 250GBs
- Replies: 3
- Views: 3212
Running MIP Models bigger than 250GBs
Hi Team, We are trying to solve an MIP model with GAMS/CPLEX. The model returns a solution when we run it with small sets (less no. of variables). But in reality those sets can be very large and can have upto 3000-4000 elements. When we ran the model with the larger set (real case scenario), model g...