# Rough Times Ahead

@article{Kirkpatrick2003RoughTA, title={Rough Times Ahead}, author={Scott Kirkpatrick}, journal={Science}, year={2003}, volume={299}, pages={668 - 669} }

Clusters of conventional computers have almost replaced vector-based supercomputers among the world9s 500 biggest computing complexes, thereby tapping a computing resource with lower costs. But as
Kirkpatrick
explains in his Perspective, this approach brings new problems. He highlights the report by
Korniss et al ., who demonstrate that the simulations times of the different processors can diverge very quickly, leading to temporal "roughening." As a result, it can be difficult to synchronize…

## 10 Citations

Translating network models to parallel hardware in NEURON

- Computer ScienceJournal of Neuroscience Methods
- 2008

Small-World Synchronized Computing Networks for Scalable Parallel Discrete-Event Simulations

- Computer Science
- 2004

It is shown that when the synchroniza- tion topology is extended to include quenched random communication links between the processing elements, they make a close-to-uniform progress with a nonzero rate, without global synchronization.

Extreme fluctuations in noisy task-completion landscapes on scale-free networks.

- Computer ScienceChaos
- 2007

This work presents large-scale simulation results using the exact algorithmic rules, supported by mean-field arguments based on a coarse-grained description, of extreme fluctuations in noisy task-completion landscapes, such as those emerging in synchronized distributed-computing networks, or generic causally constrained queuing networks, with scale-free topology.

Synchronization landscapes in small-world-connected computer networks.

- Computer SciencePhysical review. E, Statistical, nonlinear, and soft matter physics
- 2006

A simple growth model on regular and small-world networks, embedded in one and two dimensions, finds that the synchronization landscape exhibits Kardar-Parisi-Zhang-like kinetic roughening on regular networks with short-range communication links.

Synchronization in Small-World-Connected Computer Networks

- Computer Science
- 2006

It is shown that when the synchronization topology is extended to include quenched random communication links (small-world links) between the processing elements, they make a close-to-uniform progress with a nonzero rate, without global synchronization.

Synchronization in Weighted Uncorrelated Complex Networks in a Noisy Environment: Optimization and Connections with Transport Efficiency

- Computer SciencePhysical review. E, Statistical, nonlinear, and soft matter physics
- 2007

It is found that in the mean-field approximation on uncorrelated scale-free graphs, synchronization is optimal at beta*= -1 and the naturally related problem of optimizing performance in queue-limited communication networks utilizing local weighted routing schemes is pursued.

Extreme fluctuations in small-world-coupled autonomous systems with relaxational dynamics

- PhysicsSPIE International Symposium on Fluctuations and Noise
- 2004

Synchronization is a fundamental problem in natural and artificial coupled multi-component systems. We investigate to what extent small-world couplings (extending the original local relaxational…

Optimizing Synchronization, Flow, and Robustness in Weighted Complex Networks

- Computer Science
- 2012

This chapter investigates optimization in fundamental synchronization and flow problems where the weights are proportional to (k i k j )β with k i and k j being the degrees of the nodes connected by the edge.

Field Programmable Gate Array (FPGA): A Tool For Improving Parallel Computations

- Computer Science
- 2014

This research work explores the underlying parallel architecture of this Field Programmable Gate Array (FPGA) and the design methodology, the design tools for implementing FPGAs is discussed e.g. System Generator from Xilinx, Impulse C programming model etc.

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