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MINOS Warning: Model status 13: Error no solution, Solver status 9: Error: Setup failure (see message window).

  • January 8, 2020
  • 9 replies
  • 706 views
A

Dear AIMMS Team,

I am a PhD student in the UK and I have been trying to solve a non-linear non-convex optimisation problem with different solvers for a Journal Paper. The following are the CPU details: Intel Core i7 2.2GHz, 16GB RAM memory, 64-bit operating system. So far the solvers CONOPT 4.0 and IPOPT 3.11 have been able to solve the case without problems. Unfortunately, when I use MINOS the following error appears:

Errors/Warnings
Warning: Model status 13: Error no solution, Solver status 9: Error: Setup failure (see message window).

Message Window
For the MinCost 39239 columns have been generated of which only 31245 are non-empty.
Calling MINOS for NLP of 34726 rows, 31245 columns and 109867 non-zeros.
Calling MINOS to solve NLP model 'MinCost' and minimize GenCost.
Generation required 0.406 seconds.
MINOS error: Not enough memory for basis factorization. Required amount of memory: 2799 Mb.
You could increase the value of the general solvers option 'solver workspace'.
There is 1.76e+013 Mb in use by MINOS.
Warning at line 4459 in body of MainExecution:
Model status 13: Error no solution, Solver status 9: Error: Setup failure.
Solving the problem required 2.547 seconds.

Based on that message, I increased the value of solver workspace' to 'inf'. Unfortunately the same error is presented, and the message window shows the following:

Message Window
For the MinCost 39239 columns have been generated of which only 31245 are non-empty.
Calling MINOS for NLP of 34726 rows, 31245 columns and 109867 non-zeros.
Calling MINOS to solve NLP model 'MinCost' and minimize GenCost.
Generation required 0.375 seconds.
MINOS error: Not enough memory for solving problem. Required amount of workspace: 2796 Mb.
There is 10.3 Mb in use by MINOS.
Warning at line 4459 in body of MainExecution:
Model status 13: Error no solution, Solver status 9: Error: Setup failure.
Solving the problem required 0.078 seconds.

Since IPOPT and CONOPT have been able to solve the case I am clueless of what could be the problem. Would you please help me to solve this issue? 

Thanks in advance

Best wishes
Abraham Alvarez

Best answer by Marcel Hunting

There was a bug in the AIMMS-MINOS interface which caused AIMMS to incorrectly handle large values (> 1000) assigned to the option 'solver workspace'. This bug will be fixed in AIMMS 4.71.

9 replies

Marcel Hunting
AIMMSian
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  • Marcel Hunting
  • AIMMSian
  • 258 replies
  • January 9, 2020

Can you please try setting the ‘solver workspace’ option to a high real value, e.g., 10000?

Marcel - AIMMS Optimization Specialist
A
  • abrahamalvarezb
  • Author
  • Newcomer
  • 4 replies
  • January 9, 2020

Dear Marcel,

Thanks for your advice. I just tried it and the same error appeared. The message Window shows the following:

Message Window

Calling MINOS for NLP of 34726 rows, 31245 columns and 109867 non-zeros.
Calling MINOS to solve NLP model 'MinCost' and minimize GenCost.
Generation required 0.407 seconds.
MINOS error: Not enough memory for solving problem. Required amount of workspace: 2796 Mb.
There is 10.3 Mb in use by MINOS.
Warning at line 4459 in body of MainExecution:
Model status 13: Error no solution, Solver status 9: Error: Setup failure.
Solving the problem required 0.078 seconds.

Seems to behave the same as if the solver workspace has a value of ‘inf’. Do you have any other ideas?

Best Wishes

Abraham Alvarez

 

Marcel Hunting
AIMMSian
Forum|alt.badge.img+4
  • Marcel Hunting
  • AIMMSian
  • 258 replies
  • January 9, 2020

Can you try again by setting the ‘solver workspace’ option 3000?

If that does not work then I am afraid that I would need the project to resolve this. Are you able to share the project? (You can send it to our support by email if your project contains sensitive information.)

Marcel - AIMMS Optimization Specialist
A
  • abrahamalvarezb
  • Author
  • Newcomer
  • 4 replies
  • January 9, 2020

Dear Marcel, 

Unfortunately I have already tried that too. The same Error and Window message appeared. I will send it to support via email. 

Thanks in advance.

Best wishes

Abraham Alvarez

A
  • Anonymous
  • 0 replies
  • January 9, 2020

Hello @abrahamalvarezb , other question. I noticed you do not mention Knitro. Would you like to have that included as well? 

 

 

A
  • abrahamalvarezb
  • Author
  • Newcomer
  • 4 replies
  • January 9, 2020

Dear @Gertjan,

It will be very useful. Actually I have a Knitro full license, but I dont know how to link it with AIMMS.

Best wishes

Abraham Alvarez

A
  • Anonymous
  • 0 replies
  • January 10, 2020

@abrahamalvarezb , please check your email as we have updated your license so that you can compare further (or hit the License upgrade button).  With compliments of AIMMS and KNITRO; we hope you post results as well. 

A
  • abrahamalvarezb
  • Author
  • Newcomer
  • 4 replies
  • January 13, 2020

Dear @Gertjan 

Thanks for this, I have now AIMMS running with KNITRO too. The case runs also fine with this solver. I am still trying to figure out what is going on with MINOS but, @Marcel Hunting has been very helpful. I am sure soon there will be a solution. I’ll post the answer of this case as soon as is resolved. 

Best wishes

Abraham Alvarez

Marcel Hunting
AIMMSian
Forum|alt.badge.img+4
  • Marcel Hunting
  • AIMMSian
  • 258 replies
  • Answer
  • January 16, 2020

There was a bug in the AIMMS-MINOS interface which caused AIMMS to incorrectly handle large values (> 1000) assigned to the option 'solver workspace'. This bug will be fixed in AIMMS 4.71.

Marcel - AIMMS Optimization Specialist


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