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University of North Alabama
(21 results)-
White Papers
Assessing Students' Structured Programming Skills With Java: The Blue, Berry, and Blueberry Assignment
October 7, 2010, 12:00am PDT
Java is an object-oriented programming language. From a software engineering perspective, object-oriented design and programming is used at the architectural design, and structured design and...
Provided by University of North Alabama
-
Whitepapers
Lumped Paramater Radio Wave Propagation Model for Storm Drain Pipes
October 31, 2007, 12:00am PDT
The authors conducted a measurement campaign to examine narrowband radio wave propagation characteristics of Storm Drain Pipes (SDPs). The SDPs behave as multimode leaky waveguides for radio wave...
Provided by University of North Alabama
-
Whitepapers
An O(m) Analysis Technique for Supporting Real-Time Self-Suspending Task Systems
September 15, 2012, 12:00am PDT
In many real-time and embedded systems, suspension delays may occur when tasks block to access shared resources or interact with external devices. Unfortunately, prior analysis methods for dealing...
Provided by University of North Alabama
-
Whitepapers
Supporting Soft Real-Time Parallel Applications on Multicore Processors
April 10, 2012, 12:00am PDT
The prevalence of multicore processors has resulted in the wider applicability of parallel programming models such as OpenMP and MapReduce. A common goal of running parallel applications...
Provided by University of North Alabama
-
Whitepapers
Supporting Soft Real-Time DAG-Based Systems on Multiprocessors With No Utilization Loss
September 17, 2010, 12:00am PDT
In work on globally-scheduled real-time multiprocessor systems, analysis is lacking for supporting real-time applications developed using general processing graph models. In this paper, it is...
Provided by University of North Alabama
-
Whitepapers
Scheduling Suspendable, Pipelined Tasks With Non-Preemptive Sections in Soft Real-Time Multiprocessor Systems
January 21, 2010, 12:00am PST
While most prior work on multiprocessor real-time scheduling focuses on independent tasks, dependencies due to non-preemptive sections, suspensions, and pipeline-based precedence constraints are...
Provided by University of North Alabama
-
Whitepapers
Task Scheduling with Self-Suspensions in Soft Real-Time Multiprocessor Systems
September 4, 2009, 12:00am PDT
In many real-time systems, tasks interact with external devices that introduce self-suspension delays. Examples of such devices include solid-state and magnetic disks and network cards. Delays...
Provided by University of North Alabama
-
Whitepapers
The OMLP Family of Optimal Multiprocessor Real-Time Locking Protocols
July 4, 2012, 12:00am PDT
This paper presents the first suspsension-based multiprocessor real-time locking protocols with asymptotically optimal blocking bounds (under certain analysis assumptions). These protocols can be...
Provided by University of North Alabama
-
Whitepapers
Soft Real-Time on Multiprocessors: Are Analysis-Based Schedulers ReallyWorth It?
September 11, 2011, 12:00am PDT
The evolution of multicore platforms has led to much recent work on multiprocessor scheduling techniques for soft real-time workloads. However, end users routinely run such workloads atop...
Provided by University of North Alabama
-
Whitepapers
Is Semi-Partitioned Scheduling Practical?
April 10, 2011, 12:00am PDT
Semi-partitioned schedulers are - in theory - a particularly promising category of multiprocessor real-time scheduling algorithms. Unfortunately, issues pertaining to their implementation have not...
Provided by University of North Alabama
-
Whitepapers
Optimality Results for Multiprocessor Real-Time Locking
August 3, 2010, 12:00am PDT
When locking protocols are used in real-time systems, bounds on blocking times are required when ensuring timing constraints. While the term "Blocking" is well-understood in the context of...
Provided by University of North Alabama
-
Whitepapers
An Empirical Comparison of Global, Partitioned, and Clustered Multiprocessor EDF Schedulers
September 14, 2010, 12:00am PDT
As multicore platforms become ever larger, overhead-related factors play a greater role in determining which real-time scheduling algorithms are preferable. In this paper, such factors are...
Provided by University of North Alabama
-
Whitepapers
On the Implementation of Global Real-Time Schedulers
September 10, 2009, 12:00am PDT
An empirical study of implementation tradeoffs (choice of ready queue implementation, quantum-driven vs. event-driven scheduling, and interrupt handling strategy) affecting global real-time...
Provided by University of North Alabama
-
Whitepapers
Reader-Writer Synchronization for Shared-Memory Multiprocessor Real-Time Systems
April 20, 2009, 12:00am PDT
Reader preference, writer preference, and task-fair reader-writer locks are shown to cause undue blocking in multiprocessor real-time systems. A new phase-fair reader-writer lock is proposed as an...
Provided by University of North Alabama
-
Whitepapers
Multicore Operating-System Support for Mixed Criticality
April 6, 2009, 12:00am PDT
Ongoing research is discussed on the development of operating-system support for enabling mixed-criticality workloads to be supported on multicore platforms. This paper is motivated by avionics...
Provided by University of North Alabama
-
Whitepapers
On the Scalability of Real-Time Scheduling Algorithms on Multicore Platforms: A Case Study
October 3, 2008, 12:00am PDT
Multicore platforms are predicted to become significantly larger in the coming years. Given that real-time workloads will inevitably be deployed on such platforms, the scalability of the...
Provided by University of North Alabama
-
Whitepapers
An Adaptive Framework for Multiprocessor Real-Time Systems
April 19, 2008, 12:00am PDT
In this paper, the authors develop an adaptive scheduling framework for changing the processor shares of tasks - a process called reweighting - on real-time multiprocessor platforms. Their...
Provided by University of North Alabama
-
Whitepapers
A Flexible Real-Time Locking Protocol for Multiprocessors
January 1, 2013, 12:00am PST
Real-time scheduling algorithms for multiprocessor systems have been the subject of considerable recent interest. For such an algorithm to be truly useful in practice, support for semaphore-based...
Provided by University of North Alabama
-
Whitepapers
Feather-Trace: A Light-Weight Event Tracing Toolkit
January 1, 2013, 12:00am PST
The authors present a light-weight event tracing toolkit for real-time operating systems on the Intel x86 platform. Their approach is wait-free, multiprocessor-safe, and introduces very low...
Provided by University of North Alabama
-
Whitepapers
Integrating Hard/Soft Real-Time Tasks and Best-Effort Jobs on Multiprocessors
January 1, 2013, 12:00am PST
An important trend in computing is the ongoing move towards system- and chip-level parallelism. Because of heat and power issues, it has become increasingly difficult to improve processor...
Provided by University of North Alabama
-
Whitepapers
On Measuring the Similarity of Network Hosts: Pitfalls, New Metrics, and Empirical Analyses
January 1, 2011, 12:00am PST
As the scope and scale of network data grows, security practitioners and network operators are increasingly turning to automated data analysis methods to extract meaningful information....
Provided by University of North Alabama
-
Whitepapers
On Measuring the Similarity of Network Hosts: Pitfalls, New Metrics, and Empirical Analyses
January 1, 2011, 12:00am PST
As the scope and scale of network data grows, security practitioners and network operators are increasingly turning to automated data analysis methods to extract meaningful information....
Provided by University of North Alabama
-
Whitepapers
Integrating Hard/Soft Real-Time Tasks and Best-Effort Jobs on Multiprocessors
January 1, 2013, 12:00am PST
An important trend in computing is the ongoing move towards system- and chip-level parallelism. Because of heat and power issues, it has become increasingly difficult to improve processor...
Provided by University of North Alabama
-
Whitepapers
Feather-Trace: A Light-Weight Event Tracing Toolkit
January 1, 2013, 12:00am PST
The authors present a light-weight event tracing toolkit for real-time operating systems on the Intel x86 platform. Their approach is wait-free, multiprocessor-safe, and introduces very low...
Provided by University of North Alabama
-
Whitepapers
A Flexible Real-Time Locking Protocol for Multiprocessors
January 1, 2013, 12:00am PST
Real-time scheduling algorithms for multiprocessor systems have been the subject of considerable recent interest. For such an algorithm to be truly useful in practice, support for semaphore-based...
Provided by University of North Alabama
-
Whitepapers
An Adaptive Framework for Multiprocessor Real-Time Systems
April 19, 2008, 12:00am PDT
In this paper, the authors develop an adaptive scheduling framework for changing the processor shares of tasks - a process called reweighting - on real-time multiprocessor platforms. Their...
Provided by University of North Alabama
-
Whitepapers
On the Scalability of Real-Time Scheduling Algorithms on Multicore Platforms: A Case Study
October 3, 2008, 12:00am PDT
Multicore platforms are predicted to become significantly larger in the coming years. Given that real-time workloads will inevitably be deployed on such platforms, the scalability of the...
Provided by University of North Alabama
-
Whitepapers
Multicore Operating-System Support for Mixed Criticality
April 6, 2009, 12:00am PDT
Ongoing research is discussed on the development of operating-system support for enabling mixed-criticality workloads to be supported on multicore platforms. This paper is motivated by avionics...
Provided by University of North Alabama
-
Whitepapers
Reader-Writer Synchronization for Shared-Memory Multiprocessor Real-Time Systems
April 20, 2009, 12:00am PDT
Reader preference, writer preference, and task-fair reader-writer locks are shown to cause undue blocking in multiprocessor real-time systems. A new phase-fair reader-writer lock is proposed as an...
Provided by University of North Alabama
-
Whitepapers
On the Implementation of Global Real-Time Schedulers
September 10, 2009, 12:00am PDT
An empirical study of implementation tradeoffs (choice of ready queue implementation, quantum-driven vs. event-driven scheduling, and interrupt handling strategy) affecting global real-time...
Provided by University of North Alabama
-
Whitepapers
An Empirical Comparison of Global, Partitioned, and Clustered Multiprocessor EDF Schedulers
September 14, 2010, 12:00am PDT
As multicore platforms become ever larger, overhead-related factors play a greater role in determining which real-time scheduling algorithms are preferable. In this paper, such factors are...
Provided by University of North Alabama
-
Whitepapers
Optimality Results for Multiprocessor Real-Time Locking
August 3, 2010, 12:00am PDT
When locking protocols are used in real-time systems, bounds on blocking times are required when ensuring timing constraints. While the term "Blocking" is well-understood in the context of...
Provided by University of North Alabama
-
Whitepapers
Is Semi-Partitioned Scheduling Practical?
April 10, 2011, 12:00am PDT
Semi-partitioned schedulers are - in theory - a particularly promising category of multiprocessor real-time scheduling algorithms. Unfortunately, issues pertaining to their implementation have not...
Provided by University of North Alabama
-
Whitepapers
Soft Real-Time on Multiprocessors: Are Analysis-Based Schedulers ReallyWorth It?
September 11, 2011, 12:00am PDT
The evolution of multicore platforms has led to much recent work on multiprocessor scheduling techniques for soft real-time workloads. However, end users routinely run such workloads atop...
Provided by University of North Alabama
-
Whitepapers
The OMLP Family of Optimal Multiprocessor Real-Time Locking Protocols
July 4, 2012, 12:00am PDT
This paper presents the first suspsension-based multiprocessor real-time locking protocols with asymptotically optimal blocking bounds (under certain analysis assumptions). These protocols can be...
Provided by University of North Alabama
-
Whitepapers
Task Scheduling with Self-Suspensions in Soft Real-Time Multiprocessor Systems
September 4, 2009, 12:00am PDT
In many real-time systems, tasks interact with external devices that introduce self-suspension delays. Examples of such devices include solid-state and magnetic disks and network cards. Delays...
Provided by University of North Alabama
-
Whitepapers
Scheduling Suspendable, Pipelined Tasks With Non-Preemptive Sections in Soft Real-Time Multiprocessor Systems
January 21, 2010, 12:00am PST
While most prior work on multiprocessor real-time scheduling focuses on independent tasks, dependencies due to non-preemptive sections, suspensions, and pipeline-based precedence constraints are...
Provided by University of North Alabama
-
Whitepapers
Supporting Soft Real-Time DAG-Based Systems on Multiprocessors With No Utilization Loss
September 17, 2010, 12:00am PDT
In work on globally-scheduled real-time multiprocessor systems, analysis is lacking for supporting real-time applications developed using general processing graph models. In this paper, it is...
Provided by University of North Alabama
-
Whitepapers
Supporting Soft Real-Time Parallel Applications on Multicore Processors
April 10, 2012, 12:00am PDT
The prevalence of multicore processors has resulted in the wider applicability of parallel programming models such as OpenMP and MapReduce. A common goal of running parallel applications...
Provided by University of North Alabama
-
Whitepapers
An O(m) Analysis Technique for Supporting Real-Time Self-Suspending Task Systems
September 15, 2012, 12:00am PDT
In many real-time and embedded systems, suspension delays may occur when tasks block to access shared resources or interact with external devices. Unfortunately, prior analysis methods for dealing...
Provided by University of North Alabama
-
Whitepapers
Lumped Paramater Radio Wave Propagation Model for Storm Drain Pipes
October 31, 2007, 12:00am PDT
The authors conducted a measurement campaign to examine narrowband radio wave propagation characteristics of Storm Drain Pipes (SDPs). The SDPs behave as multimode leaky waveguides for radio wave...
Provided by University of North Alabama
-
White Papers
Assessing Students' Structured Programming Skills With Java: The Blue, Berry, and Blueberry Assignment
October 7, 2010, 12:00am PDT
Java is an object-oriented programming language. From a software engineering perspective, object-oriented design and programming is used at the architectural design, and structured design and...
Provided by University of North Alabama
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