rocarvaj

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

    Problem *tempProblem = (Problem*) cbhandle;

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

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 .

rocarvaj

#!/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.

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

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

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

rocarvaj

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

rocarvaj

string::size_type pos = str.find_last_not_of("\n \t");
if(pos != string::npos)
  str = str.substr(0, pos+1);

rocarvaj

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