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SIGMOD
2003
ACM
136views Database» more  SIGMOD 2003»
14 years 10 months ago
A Characterization of the Sensitivity of Query Optimization to Storage Access Cost Parameters
Most relational query optimizers make use of information about the costs of accessing tuples and data structures on various storage devices. This information can at times be off b...
Frederick Reiss, Tapas Kanungo
SIGMOD
2002
ACM
93views Database» more  SIGMOD 2002»
14 years 10 months ago
Implementing database operations using SIMD instructions
Modern CPUs have instructions that allow basic operations to be performed on several data elements in parallel. These instructions are called SIMD instructions, since they apply a...
Jingren Zhou, Kenneth A. Ross
MOBIHOC
2006
ACM
14 years 9 months ago
Balancing distance and lifetime in delay constrained ad hoc networks
This paper addresses the problem of optimizing the packet transmission schedule in an ad hoc network with end-toend delay constraints. The emphasis is to determine the proper rela...
Ben Liang, Min Dong
MOBIHOC
2004
ACM
14 years 9 months ago
Using labeled paths for loop-free on-demand routing in ad hoc networks
We present the Feasible Label Routing (FLR) protocol for mobile ad hoc networks, which uses path information to establish routes to destinations on demand. FLR enables loopfree in...
Hari Rangarajan, J. J. Garcia-Luna-Aceves
POPL
2010
ACM
14 years 7 months ago
Counterexample-Guided Focus
The automated inference of quantified invariants is considered one of the next challenges in software verification. The question of the right precision-efficiency tradeoff for the...
Andreas Podelski, Thomas Wies