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- Nandakishore Santhi, Alexander Vardy
- ArXiv
- 2006

We consider the problem of estimating the probability of error in multi-hypothesis testing when MAP criterion is used. This probability, which is also known as the Bayes risk is an important measure in many communication and information theory problems. In general, the exact Bayes risk can be difficult to obtain. Many upper and lower bounds are known in… (More)

- Nandakishore Santhi, Alexander Vardy
- ArXiv
- 2006

There are many examples of channels for which a combined coding and modulation scheme is needed to approach capacity. In some cases, it is desirable to employ codes which result in a graceful degradation of information rate with decreasing SNR[2, 3, 4]. It is also known that in some applications like Broadcast channels[1], it is impossible to achieve… (More)

- Nandakishore Santhi
- 2007 IEEE International Symposium on Information…
- 2007

We consider a list decoding algorithm recently proposed by Pellikaan-Wu [8] for q-ary Reed-Muller codes R M q(l, m, n) of length n les q<sup>m</sup> when I les q. A simple and easily accessible correctness proof is given which shows that this algorithm achieves a relative error-correction radius of taules (1 - radiclq<sup>m-1</sup> /n). This is an… (More)

- Sachin Kadloor, Nandakishore Santhi
- ArXiv
- 2010

In the past, we have observed several large blackouts, i.e. loss of power to large areas. It has been noted by several researchers that these large blackouts are a result of a cascade of failures of various components. As a power grid is made up of several thousands or even millions of components (relays, breakers, transformers, etc.), it is quite plausible… (More)

- Kishwar Ahmed, Mohammad Obaida, Jason Liu, Stephan Eidenbenz, Nandakishore Santhi, Guillaume Chapuis
- SIGSIM-PADS
- 2016

Interconnection network is a critical component of high-performance computing architecture and application co-design. For many scientific applications, the increasing communication complexity poses a serious concern as it may hinder the scaling properties of these applications on novel architectures. It is apparent that a scalable, efficient, and accurate… (More)

- Nandakishore Santhi, Stephan Eidenbenz, Jason Liu
- 2015 Winter Simulation Conference (WSC)
- 2015

We introduce Simian, a family of open-source Parallel Discrete Event Simulation (PDES) engines written using Lua and Python. Simian reaps the benefits of interpreted languages-ease of use, fast development time, enhanced readability and a high degree of portability on different platforms-and, through the optional use of Just-In-Time (JIT) compilation,… (More)

- Nandakishore Santhi, Guanhua Yan, Stephan Eidenbenz
- Proceedings of the 2010 Winter Simulation…
- 2010

Cyber-infractions into a nation's strategic security envelope pose a constant and daunting challenge. We present the modular CyberSim tool which has been developed in response to the need to realistically simulate at a national level, software vulnerabilities and resulting malware propagation in online social networks. CyberSim suite (a) can generate… (More)

- Eunjung Park, Stephan Eidenbenz, Nandakishore Santhi, Guillaume Chapuis, Bradley W. Settlemyer
- 2015 Winter Simulation Conference (WSC)
- 2015

We introduce La-pdes, a parameterized benchmark application for measuring parallel and serial discrete event simulation (PDES) performance. Applying a holistic view of PDES system performance, La-pdes tests the performance factors of (i) the (P)DES engine in terms of event queue efficiency, synchronization mechanism, and load-balancing schemes; (ii)… (More)

- Guillaume Chapuis, Stephan Eidenbenz, Nandakishore Santhi, Eun Jung Park
- 2015 Winter Simulation Conference (WSC)
- 2015

Discrete Event Simulation (DES) allows the modelling of ever more complex systems in a variety of domains ranging from biological systems to road networks. The increasing need to model larger systems stresses the demand for efficient parallel implementations of DES engines. Recently, Graphics Processing Units have emerged as an efficient alternative to… (More)