Overview
This directory contains a simple example that finds all solutions to a
Sudoku board. It uses a straightforward state-space search algorithm
that exhibits OR-parallelism. It can be optionally run until it
obtains just the first solution. The point of the example is to teach
how to use the task_group interface.
Files
- sudoku.cpp
- Driver.
- input1
- Sample input file with modest number of solutions.
- input2
- Sample input file with small number of solutions.
- input3
- Sample input file with larger number of solutions.
- input4
- Sample input file with very large number of solutions.
- Makefile
- Makefile for building example.
Directories
- msvs
- Contains Microsoft* Visual Studio* 2008 workspace for building and running the example with the Intel® C++ compiler.
- xcode
- Contains Mac OS* Xcode* workspace for building and running the example.
To Build
General build directions can be found here.
Usage
- sudoku [N]
- sudoku inputfile N S [-p]
- N is the number of threads to be used.
S is the number of solutions to find: 1 finds the first, any other number will find all solutions.
-p prints the first solution (optional argument)
- To run a short version of this example, e.g., for use with Intel® Threading Tools:
- Build a debug version of the example
(see the build directions).
Run it with a small problem size and the desired number of threads, e.g., sudoku input2 4.
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