Open MPI. 。Phil Ratzloff *。Distinguished Software Developen SAS Institute *。Philis a Distinguished Software Developer and C++ advocate at SAS Institute. He has used C++ for 26 years on applications using and fraud detection. HA1/ *。Thanks also to Jesun Firoz, Tony Liu, Scott McMillan, Haley Riggs SAS Institute Acknowledgments and Disclaimers *，Any opinions, findings, and conclusions or recommendations Rs C UNIVERSITY of National Science Foundation 比 ile] DB ts SAS Institute WASHINGTON Graphs Are Fundamental Abstractions * Graphs model