Common GraphLab Interface
-- Designed by Jiunn Haur Lim <jiunnhal@cmu.edu>

[Shortest Path]
./dispatcher --graph=toy.tsv --format=cgi --ncpus=2 --program=demoapps/shortest_path/shortest_path_cgi --saveprefix=out --signal=1
./dispatcher --graph=toy.tsv --format=cgi --ncpus=2 --program=demoapps/shortest_path/shortest_path.rb  --saveprefix=out --signal=1