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directCell: Hybrid systems with tightly coupled accelerators
IBM Journal of Research and Development, 2009The Cell Broadband Engine® (Cell/B.E.) processor is a hybrid IBM PowerPC® processor. In blade servers and PCI Express® card systems, it has been used primarily in a server context, with Linux® as the operating system. Because neither Linux as an operating system nor a PowerPC processor-based architecture is the preferred choice for all applications ...
Hartmut Penner +4 more
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Modeling Architectural Support for Tightly-Coupled Accelerators
2020 IEEE International Symposium on Performance Analysis of Systems and Software (ISPASS), 2020As proposed accelerators target finer-grained chunks of computation and data movement, it becomes increasingly important to couple them tightly with the processor, avoiding long invocation delays. However, the large implementation design space of these Tightly-Coupled Accelerators (TCAs) makes it difficult to balance trade-offs between hardware ...
David J. Schlais +2 more
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Tightly-coupled self-debugging software protection
Proceedings of the 6th Workshop on Software Security, Protection, and Reverse Engineering, 2016Existing anti-debugging protections are relatively weak. In existing self-debugger approaches, a custom debugger is attached to the main application, of which the control flow is obfuscated by redirecting it through the debugger. The coupling between the debugger and the main application is then quite loose, and not that hard to break by an attacker ...
Bert Abrath +4 more
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SPAN: Tightly coupled thermal and electrical simulation
Proceedings of EURO-DAC 93 and EURO-VHDL 93- European Design Automation Conference, 2002A method is presented to combine solvers for ordinary and partial differential equations, like SPICE and ANSYS, for thermal-electrical analysis of integrated circuits or systems. A sketch of a first prototype program (SPAN) is given together with the theoretical background, which makes use of convergence principles from waveform relaxation.
Bernhard Klaassen, Karl L. Paap
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Performance analysis of tightly-coupled multiprocessor minicomputers
Microprocessing and Microprogramming, 1990Abstract The design of a multiprocessor computer system requires the solution of architectural problems, related both to the design of the machine and to the operating system, which are not found in monoprocessor systems. Moreover, to achieve the expected level of performance, an accurate balance between the CPU and the I/O subsystem is very ...
Pistolesi, Luca +2 more
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Prototyping of Tightly Coupled Hardware/Software-Systems
Design Automation for Embedded Systems, 1997Verification and test issues raise the need for rapid prototyping of complex systems and especially hardware/software-systems. We tackle this problem by integration of hardware/software-codesign and prototyping. First we define the concept of the entire system architecture. This concept directs the hardware/software-partitioning process.
Wolfram Hardt, Wolfgang Rosenstiel
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A asynchronous buffering network for tightly coupled multiprocessors
Proceedings of the 3rd international conference on Supercomputing - ICS '89, 1989In order to reach high performance, many levels of parallelism should be exploited simultaneously on massively parallel architectures. The efficiency of a large system heavily depends on the interconnection between the processing elements and the memories: asynchronous buffering networks allow a high throughput of requests when independent tasks are ...
Yvon Jégou, André Seznec
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Curriculum Learning for Tightly Coupled Multiagent Systems
International Joint Conference on Autonomous Agents and Multiagent Systems, 2019In this paper, we leverage curriculum learning (CL) to improve the performance of multiagent systems (MAS) that are trained with the cooperative coevolution of artificial neural networks. We design curricula to progressively change two dimensions: scale (i.e. domain size) and coupling (i.e. the number of agents required to complete a subtask).
Golden Rockefeller +2 more
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A Tightly Coupled Network-on-Chip Router Architecture
2009 International Conference on Scalable Computing and Communications; Eighth International Conference on Embedded Computing, 2009Network on Chip (NoC) plays an important role in manycore system. Recent researches on NoC focus on the design and optimization on network separately. This paper describes a tightly coupled NoC router architecture. In this architecture, the router and the core are designed as a whole.
Bin Xie 0002 +5 more
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Tightly coupled operating systems on personal microcomputers
Proceedings of the 1983 ACM SIGSMALL symposium on Personal and small computers - SIGSMALL '83, 1983This paper examines a type of hardware/software architecture that is emerging as a result of present availability of microcomputer systems and their software. We point out how these systems can be merged in a tightly coupled configuration, and how we can obtain a strong synergistic effect by pooling the resources of each system.
Rafiul Ahad, Georg Raeder
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