Read MPS file

pathfinder1_1 — Thu, 17 Sep 2020 21:08:29 GMT

Hi, I am reading an MPS file using this code. I got this code from this link. https://documentation.sas.com/?docsetId=casactmopt&docsetTarget=casactmopt_optimization_examples06.htm&docsetVersion=8.3&locale=en

proc cas;
example_fix_string = readpath ("&filepath.");
loadactionset "optimization";
action optimization.loadMps /
mpsFileString = example_fix_string
casOut = {name = "example_fix" replace = true}
format = "FIXED";
run;
action table.fetch / table = "example_fix" to = 24;
run;
quit;

However, I get this error as shown in below error log. I wonder how to fix?

30 proc cas;
31 example_fix_string = readpath ("&filepath.");
32 loadactionset "optimization";
33 action optimization.loadMps /
34 mpsFileString = example_fix_string
35 casOut = {name = "example_fix" replace = true}
36 format = "FIXED";
37 run;
ERROR: The server connection has not been specified
ERROR: Execution halted
38 action table.fetch / table = "example_fix" to = 24;
39 run;
ERROR: There is no server connection to execute the action 'table.fetch'.
ERROR: Execution halted
40 quit;

Re: Read MPS file

RobPratt — Thu, 17 Sep 2020 21:21:57 GMT

I suspect that you have SAS/OR (SAS 9) and not SAS Optimization (SAS Viya). If that is true, please try this example instead:

https://go.documentation.sas.com/?docsetId=ormpug&docsetTarget=ormpug_mpsds_sect024.htm&docsetVersion=15.2&locale=en

topic Re: Read MPS file in Mathematical Optimization, Discrete-Event Simulation, and OR

Read MPS file

Re: Read MPS file