rocarvaj

class Arc(object):
    """ An arc in the graph """
    def __init__(self, origin=None, dest=None, varCost=None, fixCost=None, capac=None):
        self.origin = origin
        self.dest = dest
        self.varCost = varCost
        self.fixCost = fixCost
        self.capac = capac

rocarvaj

#!/usr/bin/python

import sys

fileName = sys.argv[1]
print "Reading file:", fileName

inFile = open(fileName, 'r')

rocarvaj

hardstatus on
hardstatus alwayslastline
hardstatus string "%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G} %H %{..Y} %m/%d %C%a "

rocarvaj

std::cout << std::setw(2) << setfill('0') << myNumber;

rocarvaj

 plot "c37.lp_MIPStart.log" using 1:5 with lines, "c37.lp_MIPStart.log" using 1:6 with lines

rocarvaj

What do you need?

• [IBM ILOG CPLEX][cplex] (See section below on how to install CPLEX). The code works with CPLEX 12.2, but any later version should be fine.
• MPI C++ compiler.

CPLEX

The process of downloading/installing CPLEX is a bit cumbersome, you have to get an account at IBM's academic initiative in order to get the software. Follow these steps:

Download software

• Go to the [IBM academic initiative site][ibm] and create and account (click "Join now" at the right).
• Once you have completed this, go back to the [home page][ibm] of the site and go to "Get software & access".

rocarvaj

• How to Push a New Local Branch to a Remote Git Repository

// The one sending branch

git push --set-upstream origin plugin

// The one wanting to use the branch

git fetch origin >git checkout --track origin/plugin

rocarvaj

C/C++ Notes

Vectors

• Add a constant to every element of a vector http://stackoverflow.com/a/4461466

• Append vector to another vector http://www.cplusplus.com/reference/stl/vector/insert/

• Copy vector (requires allocation in advance) http://www.cplusplus.com/reference/algorithm/copy/

  copy ( myints, myints+7, myvector.begin() );

• Shuffling a vector http://www.cplusplus.com/reference/algorithm/random_shuffle/

rocarvaj

Read file and parse

Las funciones importantes est'an en parse.c. Adjunto tambi'en el archivo macros.h, que tiene algunas funciones macro que se llaman en parse.c, pero se llaman s'olo para cosas como testear para ver si hay alguna condici'on de lleve a error.

rocarvaj

#!/usr/bin/python

"""
Convert an instance from the multicommodity fixed charge
network flow problem in .csv format to .lp file (arc formulation)

Usage: ./csvToLP.py path/to/my/csv/file.csv

Rodolfo Carvajal <rocarvaj@gatech.edu>