GAMS World Forum

Hi,

Please have a look at point 2 of the forum rules: app.php/rules

Your code cannot be executed without manually fixing all the broken table formatting.

Fred

Hi, sounds as if you need a two dimensional set that maps vehicles v to types t based on parameter A(t). Maybe the following example is helpful. set i customer / i1*i10 / t type / t1*t3 / v vehicle / v1*v10 / ; alias(i,j); parameter A(t) / t1 1, t2 1, t3 7 / ; set map(t,v) map vehicles to types; map...

How do you know the solution is not correct? I suggest to to share the xlsx file, so other users can run your model.

Fred

Hi,

The following shoudl do the trick.

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putclose emp '* problem %gams.i% ' /
             'randvar bf discrete ' a1 ' ' a2 ' ' b1 ' ' b2 ' ' c1 ' ' c2 /
             'stage 2 bf u demand';

I hope this helps!

Fred

Hi,

you have to provide the domain for the equation and the variable. I suggest to try

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$Onecho > cplex.opt
threads=0
indic Constraint1(p,s,m,i,j)$y(p,s,m,i,j) 0
$Offecho

I hope this helps!

Fred

Hi, The equation mentioned in the error 83 solve rs_transit using mcp; **** $57,256 **** 57 Endogenous relational operations require model type "dnlp" **** 256 Error(s) in analyzing solve statement. **** The following MCP errors were detected in model rs_transit: **** 57 equation rationkjd...

Where have you heard that CPLEX can use GPUs? I think that is plain wrong.
It can use multiple cores/threads though. In GAMS you can set the number of threads via option threads.

I hope this helps!

Fred

Hi, When posting code code, please use the code tags. The code tags are inserted if you click on the symbol with "<\>". Otherwise the formatting (e.g. of tables) gets destroyed when copy/pasting code. For your model even the RMIP (the LP you get when neglecting integrality requirements for...

Hi, When you look into the lst file, you will find the following error message: 66 solve data_envelopment using lp minimizing M; **** $66,256 **** 66 The symbol shown has not been defined or assigned **** A wild shot: You may have spurious commas in the explanatory **** text of a declaration. Check ...

Hi,

When you set

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OPTIONS OPTCR=0.05;

Cplex should terminate as soon as that gap is reached.
Could you share a log and your code?

Fred

GAMS World Forum

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Re: MCP code: Endogenous relational opearations require model type "dnlp"

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Re: CPLEX OPTCR