How to start a new Julia session from script

General Usage
13

If you start Julia many times, you will notice that everything becomes slow because things need to be compiled every time. Also, you cannot easily pass information back and forth. Your script contains 40 globals, my bet is that they can all be avoided when passing the program’s state around a bit more careful. That is, move the logic into functions and give the functions name. For example, instead of

  #STARTUP COST ANALYSIS
  elseif option == 2
      mkdir("Option_2")
      for gp = 1:num_gp
          mkdir("Option_2\\Group_$gp")
          global temp_StartUpCost = zeros(1, nUnits)
          global test_StartUpCost = zeros(1, num_iter)
          test_StartUpCost = collect(range(test2_limit[((gp-1)*2 + 1)], test2_limit[((gp-1)*2 + 2)], length = num_iter))
          for iter = 1:num_iter
              global test2[iter, ((gp-1)*2 + 1)] = round(test_StartUpCost[iter], digits=2)
              var = round(test_StartUpCost[iter], digits=2)
              mkdir("Option_2\\Group_$gp\\$var")
              temp_StartUpCost = deepcopy(StartUpCost)
              for jj = gen_gp[gp]
                  temp_StartUpCost[jj] = round(test_StartUpCost[iter], digits=2)
              end
              #Run Simulation
              global test2[iter, ((gp-1)*2 + 2)] = MIQP(nUnits, nHours, a, b, c, maxPow, minPow, StartUpTime, MinimumUpTime, MinimumDownTime, RampUp, RampDown, temp_StartU  pCost, ZeroStartUpCost, ShutDownCost, nZones, DLE, DLEZone, Load, SR, init_power, init_isOn, init_startup, init_rstartup1, init_rstartup2, init_shutdown, opt, gp, var)
          end
      end---
      CSV.write("Test2_Result.csv",  DataFrame(test2), writeheader=false)--
  #SHUTDOWN COST ANALYSIS
  elseif option == 3

write a function

function analyze_startup_costs(...)
    [...]
end

and call that from the code via

  elseif option == 2
      analyze_startup_costs(...)
  elseif option == 3

The next thing that you will walk into is that the functions receive too many variables, like happens in your MIQP function. To solve that, store you variables in structs or other appropriate data types. For instance,

struct ModelSettings
    RampUp
    RampDown
    StartupCost
end

Implementing functions will take some time, but I guarantee that it will make it much easier to manage the complexity of the program.

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