Hi Michael,

Thanks for solving my problem. That's really helpful. I just have one more small question: I think the .resUsd and .etSolve will report the CPU time. Do you know how can I get the wall time from GAMS?

Thanks

- 1 month ago
- Forum: Tools
- Topic: How to calculate the total solver resource usage time
- Replies:
**3** - Views:
**298**

Hi Michael,

Thanks for solving my problem. That's really helpful. I just have one more small question: I think the .resUsd and .etSolve will report the CPU time. Do you know how can I get the wall time from GAMS?

Thanks

- 1 month ago
- Forum: Syntax
- Topic: Difference between 'equilibrium vi' and 'vi' in EMP
- Replies:
**1** - Views:
**139**

Hi All,

I have a question between the difference between syntax 'equilibrium vi' and 'vi' in the EMP framework. Now I have a strongly monotone VI problem that can be solved by both syntax. However, the solution they give is quite different. I am just wondering what cause this situation.

Thanks

I have a question between the difference between syntax 'equilibrium vi' and 'vi' in the EMP framework. Now I have a strongly monotone VI problem that can be solved by both syntax. However, the solution they give is quite different. I am just wondering what cause this situation.

Thanks

- 1 month ago
- Forum: Modeling
- Topic: Too long execution time for a Dantzig-Wolfe decomposition method master problem
- Replies:
**2** - Views:
**157**

Hi Fred, Thanks. This answer helps me a lot. Hi, You are comparing the execution time of a single solve approach (EMP) to your manual implementation of an iterative method (DW) where the second lst excerpt shows that the execution time of 131.764 SECONDS was reached at iteration 102. Hence, this exe...

- 1 month ago
- Forum: Tools
- Topic: How to calculate the total solver resource usage time
- Replies:
**3** - Views:
**298**

Hi All, I am now writing a iteration method to solve a optimization problem and now I have a question about how to calculate the total resource usage time spent by the solver. I know that when gams ends its execution, it will have a elapsed time to calculate the total time used by the program. But i...

- 1 month ago
- Forum: Modeling
- Topic: Too long execution time for a Dantzig-Wolfe decomposition method master problem
- Replies:
**2** - Views:
**157**

Hi All, I'm now trying to solve a large Variational Inequality problem. And I solve it by two ways, using PATH solver solve it directly and use Dantzig-Wolfe method to solve it in a decomposition way. And when I implement the second way in GAMS, I found the time to solve it is relatively short, but ...

- 4 months ago
- Forum: Solvers
- Topic: Strange problems about initial point of JAMS solver
- Replies:
**0** - Views:
**172**

Dear All, I now have a very strange problems when use jams solver to solve a MOPEC problem. To solve my MOPEC, I will first solve a very similar system optimization problem to get a feasible initial point. (It is feasible since when I fix this initial point and solve the problem, the model status is...

- 4 months ago
- Forum: Solvers
- Topic: solver problem for solving a series equilibrium problem
- Replies:
**0** - Views:
**134**

Dear GAMS communities, I am now trying to solve a series of equilibrium problems and analyze the sensitivity analysis of the value function on the initial input state value. However, now I have a problem that a large part of these problems model status will be: 5 locally infeasible after solving. Fo...

- 5 months ago
- Forum: Syntax
- Topic: Syntax error for EMP equilibrium problem
- Replies:
**2** - Views:
**319**

- 5 months ago
- Forum: Syntax
- Topic: Syntax error for EMP equilibrium problem
- Replies:
**0** - Views:
**143**

<r>Hi,<br/> <br/> I have a emp syntax error for a equilibrium problem. GAMS said <B><s> </s>"JAMS Pre processing failed"<e> </e></B> caused by <B><s> </s>"EMP syntax error: key expected: is I (item 13 on line 3) but instance not in variable rim"<e> </e></B>. <br/> <br/> My code is following:<br/> <b...

- 5 months ago
- Forum: Syntax
- Topic: Syntax error for EMP equilibrium problem
- Replies:
**2** - Views:
**319**

Hi, I am trying to write a gams model with emp input to solve a equilibrium problem. However, GAMS said I have a syntax error causing JAMS Pre processing failed that I don't know how to deal with: *** EMP syntax error: key expected: is I (item 13 on line 3) but instance not in variable rim Here is t...