Ian A. Troxel

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System-level design presents special simulation modeling challenges. System-level models address the architectural and functional performance of complex systems. Systems are decomposed into a series of interacting subsystems. Architectures define subsystems, the interconnections between subsystems and contention for shared resources. Functions define the(More)
—Hybrid spacecraft processing platforms that combine radiation-hardened components with commercial-grade COTS components have the potential to dramatically improve performance while reducing overall project cost and risk. However, the susceptibility of COTS components to single-event upsets and other radiation effects can diminish their benefits without(More)
High-performance computing (HPC) systems with hardware-reconfigurable devices have the potential to achieve major performance increases over parallel computing systems based solely on traditional processors. However, providing services upon which users of traditional HPC systems have come to depend is essential for large-scale reconfigurable computing (RC)(More)
The combination of high-performance processing power and flexibility found in network processors (NPs) has made them a good solution for today's packet processing needs. Similarly, the emerging technology of reconfigurable computing (RC) has made advances in packet processing as well as other point-solution markets. Current NP designs offer configurable(More)
Future spaceborne platforms will require expanded onboard processing payloads to meet increasing mission performance and autonomy requirements. Recently proposed spacecraft systems plan to deploy networked processors configured much like commodity clusters for high-performance computing (HPC). Just as robust job management services have been developed and(More)
Cluster computing offers many advantages as a highly cost-effective and often scalable approach for high-performance computing in general, and most recently as a basis for hardware-reconfigurable systems. To achieve the full potential of performance of reconfigurable HPC systems, a runtime configuration service is required. Centralized configuration(More)
Space-based radar is a suite of applications that presents many unique system design challenges. In this paper, we investigate use of RapidIO, a new high-performance embedded systems interconnect, in addressing issues associated with the high network bandwidth requirements of real-time ground moving target indicator (GMTI), and synthetic aperture Radar(More)
—Achieving seamless portability in reconfigurable hardware designs among vendor-specific FPGA platforms continues to be a nontriv-ial task. The current reliance on custom hardware wrappers and proprietary software APIs is detrimental to the efficiency of FPGA-accelerated application development. The issues with portability are compounded for distributed(More)