Safiollah Heidari

I joined CLOUDS Lab in Jun 2014 at the University of Melbourne as a PhD student under the supervision of Prof. Rajkumar Buyya and Dr. Benjamin Rubinstein. Previously I have graduated from K. N. Toosi University of Technology, Tehran, Iran, with First Class Honors degree in M.Sc. in Information Technology and I have published a number of papers during my studies. I am also member of Iran’s National Elites Foundation, a prestigious organization for recognize, organize and support Iran's elite national talents. I have about two years of experiences working as a software engineer in different companies in Iran and also as a university lecturer.

I submitted my thesis recently and am looking for further opportunities to pursue my research. During my PhD I was investigating resource provisioning, workflow scheduling and network aspects of large-scale graph-processing systems, Big Data and social networks on cloud environments. We have developed iGiraph which is a Pregel-like graph processing framework in order to minimize the monetary costs of processing on large-scale graph datasets.

My thesis and list of publications as well as the link to open source iGiraph can be found below:


  • Cost-efficient Resource Provisioning for Large-scale Graph Processing Systems in Cloud Computing Environments


  • Safiollah Heidari, Rodrigo N. Calheiros and Rajkumar Buyya, "iGiraph: A Cost-efficient Framework for Processing Large-scale Graphs on Public Clouds", in Proceedings of the IEEE/ACM 16th International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2016, IEEE CS Press, USA), Cartagena, Colombia, May 16-19, 2016. PDF
  • Safiollah Heidari, Yogesh Simmhan, Rodrigo N. Calheiros and Rajkumar Buyya, "Scalable Graph Processing Frameworks: A Taxonomy and Open Challenges", ACM Computing Surveys, vol 51, issue 3, ACM Press, New York, USA, 2018. PDF
  • Safiollah Heidari and Rajkumar Buyya, "Cost-efficient and Network-aware Dynamic Repartitioning-based Algorithms for Scheduling Large-scale Graphs in Cloud Computing Environments", Software: Practice and Experience, (Accepted, In Press), 2018

iGiraph Project:

Honors and Awards:

 Resume is Available Here.