I tried to use GAMS and Kestrel a while and it worked fine. Recently, I downloaded the new GAMS version (30.1.0 re01a340 WEX-WEI x86 64bit/MS Windows) and I activated it by using a trial licence. Now, I'm trying to solve an optimization model using GAMS/Kestrel. When I run the GAMS to solve the model it has the following error:
The input is:--- Starting compilation
--- GAMS..Kestrel.gms(43) 3 Mb
--- Starting execution: elapsed 0:00:00.013[LST:48]
--- GAMS..Kestrel.gms(38) 4 Mb
--- Generating MIP model sequence[LST:48]
--- GAMS..Kestrel.gms(43) 4 Mb
--- 58 rows 73 columns 272 non-zeroes
--- 36 discrete-columns
--- Executing KESTREL: elapsed 0:00:00.033[LST:266]
--- Kestrel fatal error: GAMS cntr-file version 41, 42, 44, 46, 47 or 48 required
ERR: Solver rc 1
--- Restarting execution
--- GAMS..Kestrel.gms(43) 2 Mb
--- Reading solution for model sequence[LST:281]
*** Status: Normal completion[LST:330]
--- Job GAMS..Kestrel.gms Stop 04/03/20 17:55:45 elapsed 0:00:02.128
Code: Select all
MODEL test/ all /;
Option mip=kestrel;
$onecho > kestrel.opt
kestrel_solver Cplex
neos_server www.neos-server.org:3333
$offecho
test.optfile=1;
SOLVE test using MIP minimizing PRS;
1) What does it mean and how can I fix this issue?
2) Can Gurobi solver be invoked through the kestrel using the GAMS new versions? (In the previous version it did not)
Regards
A. Omidi