Search

Your search keyword '"Kolcu, Birkan"' showing total 4 results
Start Over Author "Kolcu, Birkan"
4 results on '"Kolcu, Birkan"'

2. Democratization of HPC cloud services with automated parallel solvers and application containers

Author

Muhtaroğlu, Nitel, Arı, İsmail, Kolcu, Birkan, Özyeğin University, Arı, İsmail, Muhtaroğlu, Nitel, and Kolcu, Birkan

Subjects
Docker, Hadoop, Iterative solver, Finite element analysis, Condition number, Direct solver, HPC-as-a-Service, Virtual machine
Abstract

Due to copyright restrictions, the access to the full text of this article is only available via subscription. In this paper, we investigate several design choices for HPC services at different layers of the cloud computing architecture to simplify and broaden its use cases. We start with the platform-as-a-service (PaaS) layer and compare direct and iterative parallel linear equation solvers. We observe that several matrix properties that can be identified before starting long-running solvers can help HPC services automatically select the amount of computing resources per job, such that the job latency is minimized and the overall job throughput is maximized. As a proof of concept, we use classical problems in structural mechanics and mesh these problems with increasing granularities leading to various matrix sizes, ie, largest having 1 billion non-zero elements. In addition to matrix size, we take into account matrix condition numbers, preconditioning effects, and solver types and execute these finite element analysis (FEA) over an IBM HPC cluster. Next, we focus on the infrastructure-as-a-service (IaaS) layer and explore HPC application performance, load isolation, and deployment issues using application containers (Docker) while also comparing them to physical and virtual machines (VM) over a public cloud. IBM Faculty Award ; IBM PhD Fellowship programs ; EU Marie Curie FP7 BI4MASSES project

Published
2018

3. FCTaaS: Federated Cybersecurity Testbed as a Service

Author

Kolcu, Birkan and Kolcu, Birkan

Abstract

The use of smart infrastructures, with the integration of the digital devices and controls, provides better use of the resources. However, this also brings multiple vulnerabilities compared to the isolated environments. Hence, there is an urgent need to study these environments in terms of their management and cybersecurity. Studying cybersecurity of the smart infrastructures requires multiple complex testbeds that can show how an attack can propagate, which is extremely difficult to own for an organization alone. Therefore, in this thesis we introduce Federated Cybersecurity Testbed as a Service (FCTaaS) for facilitating integration of isolated, geographically dispersed cybersecurity testbeds whether it is physical or virtual, under single federation for researchers and educators to create, perform, reproduce cybersecurity experiments within policies set by the cybersecurity testbeds operators. We first present our FCTaaS architecture and, then demonstrate how to perform cybersecurity experiments on geographically dispersed cybersecurity testbeds such as network-based Denial of Service (DoS) attack on a critical infrastructure testbed within FCTaaS environment.

Published
2020

Catalog

Books, media, physical & digital resources
See catalog results