Rodolfo Carvajal 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".

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

A usual problem when running jobs in a cluster through the Condor job scheduler, is that it doesn't provide very flexible script-like functionality. In this post I propose a way to deal with a particular situation: Submitting a bunch of jobs with different arguments, in a batch.

This post assumes some familiarity with Condor. But I can tell you the short version: In Condor you create a "submitting" file (usually with extension .cmd) that looks something like this

universe = vanilla
executable = /path/to/my/executable
arguments = arg1 arg2 arg3
queue

Then, you submit this job to Condor with the command condor_submit .

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/

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.

ISyE 6662 - Spring 2013: Homework guidelines

The solutions to the homework are required to be typesetted in LaTeX. Please find a LaTeX template and more information in the LaTeX folder in the Resources section of the course's T-square site.

Please follow the following guidelines regarding your homework solutions:

Homeworks are meant as individual assignments. Although you are encouraged to discuss them with your classmates, each student should complete and submit his/her own work, unless specifically instructed to work in groups. Cite all reference sources used in your assignments. Late homework submissions will not be accepted, except for serious unavoidable circumstances.

Write your name and class clearly at the top of at least the first page, along with the assignment number and the page number(s). If you are not stapling or paper-clipping the pages together, then put your name or initials on all the pages.

Git cheat sheet: Stuff I always forget

See: http://documentup.com/skwp/git-workflows-book#

Create branch
Commit a temp "bookmark":

git commit -a -m "uncommit me: need to finish stuff in the user model"

	#!/bin/bash

	########################################################
	# This script generates multiples .cmd (Condor) files,
	# one for each instance in the input file instances.txt.
	# You can easily change this to have different arguments
	# in the input file.
	#
	# After you have generated the file, use the multiSubmit.sh
	# script to submit all your jobs at once.

	int cutCallbackShareRootCuts (CPXCENVptr env,
	void *cbdata,
	int wherefrom,
	void *cbhandle,
	int *useraction_p)
	{
	int status;
	*useraction_p = CPX_CALLBACK_DEFAULT;

	Problem tempProblem = (Problem) cbhandle;

	#!/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 <[email protected]>