The Case for Replication-Aware Memory-Error Protection in Disaggregated Memory

Disaggregated memory leverages recent technology advances in high-density, byte-addressable non-volatile memory and high-performance interconnects to provide a large memory pool shared across multiple compute nodes. Due to higher memory density, memory errors may become more frequent. Unfortunately, tolerating memory errors through existing memory-error protection techniques becomes impractical due to increasing storage cost. This work proposes replication-aware memory-error protection to improve storage efficiency of protection in data-centric applications that already rely on memory replication for performance and availability. It lets such applications lower protection storage cost by weakening the protection of each individual replica, but still realize a strong protection target by relying on the collective protection conferred by multiple replicas

On second-order differential equations with highly oscillatory forcing terms

We present a method to compute efficiently solutions of systems of ordinary differential equations that possess highly oscillatory forcing terms. This approach is based on asymptotic expansions in inverse powers of the oscillatory parameter,and features two fundamental advantages with respect to standard ODE solvers: rstly, the construction of the numerical solution is more efficient when the system is highly oscillatory, and secondly, the cost of the computation is essentially independent of the oscillatory parameter. Numerical examples are provided, motivated by problems in electronic engineering

Genesis of the Doctrine of the Principles of Civil Law: from History to the Present

The article is devoted to the history of the study of the principles of civil law. It is discovered the various periods of the development of Russian legislation. The author classifies studies of the in the pre-revolutionary, Soviet and post-Soviet periods. The author concludes that the digitalization of society has changed the approaches to various traditional institutions and has also posed new challenges to the principles of civil law. The solution of these issues should be based, among other things, on the traditional approaches of domestic civil law

Memory Systems and Interconnects for Scale-Out Servers

The information revolution of the last decade has been fueled by the digitization of almost all human activities through a wide range of Internet services. The backbone of this information age are scale-out datacenters that need to collect, store, and process massive amounts of data. These datacenters distribute vast datasets across a large number of servers, typically into memory-resident shards so as to maintain strict quality-of-service guarantees. While data is driving the skyrocketing demands for scale-out servers, processor and memory manufacturers have reached fundamental efficiency limits, no longer able to increase server energy efficiency at a sufficient pace. As a result, energy has emerged as the main obstacle to the scalability of information technology (IT) with huge economic implications. Delivering sustainable IT calls for a paradigm shift in computer system design. As memory has taken a central role in IT infrastructure, memory-centric architectures are required to fully utilize the IT's costly memory investment. In response, processor architects are resorting to manycore architectures to leverage the abundant request-level parallelism found in data-centric applications. Manycore processors fully utilize available memory resources, thereby increasing IT efficiency by almost an order of magnitude. Because manycore server chips execute a large number of concurrent requests, they exhibit high incidence of accesses to the last-level-cache for fetching instructions (due to large instruction footprints), and off-chip memory (due to lack of temporal reuse in on-chip caches) for accessing dataset objects. As a result, on-chip interconnects and the memory system are emerging as major performance and energy-efficiency bottlenecks in servers. This thesis seeks to architect on-chip interconnects and memory systems that are tuned for the requirements of memory-centric scale-out servers. By studying a wide range of data-centric applications, we uncover application phenomena common in data-centric applications, and examine their implications on on-chip network and off-chip memory traffic. Finally, we propose specialized on-chip interconnects and memory systems that leverage common traffic characteristics, thereby improving server throughput and energy efficiency

Theoretical and computational advances in nonlinear dynamical systems 2018

Peer reviewedPublisher PD

A Chaotic System with an Infinite Number of Equilibrium Points: Dynamics, Horseshoe, and Synchronization

Discovering systems with hidden attractors is a challenging topic which has received considerable interest of the scientific community recently. This work introduces a new chaotic system having hidden chaotic attractors with an infinite number of equilibrium points. We have studied dynamical properties of such special system via equilibrium analysis, bifurcation diagram, and maximal Lyapunov exponents. In order to confirm the system’s chaotic behavior, the findings of topological horseshoes for the system are presented. In addition, the possibility of synchronization of two new chaotic systems with infinite equilibria is investigated by using adaptive control

Protection of the Weak Party of the Banking Contract in the Case of Using Smart Contract

The article is devoted to the features of protection the weak party in the situation when the parties to the banking agreement use the “smart contract” technology from the point of view of Russian and foreign doctrine. The author proposes particular changes and additions to the current regulation and the established judicial practice, while the general principles of legislation remain unchanged

Discrete one-dimensional piecewise chaotic systems without fixed points

Acknowledgements The authors are thankful to the anonymous reviewers for their constructive feedback.Peer reviewe