Jean-Marc Daveau, Tarek Ben Ismail and Ahmed Amine Jerraya, "Synthesis of System-Level Communication by an allocation-Based Approach", in Proc. of the 8 ISSS, pp.150-155, 1995.  Home/Search   Document Not in Database   Summary   Related Articles   Check

.... 98, the Conference on Applications and Science of Computational Intelligence, Orlando, Florida USA, 13 17 April 1998. 29] M. Millberg, J. berg, J. Waldemark, Generic VHDL Implementation of a PCNN with Loadable Coefficients , Presented at the VIDYNN 98 Workshop, Stockholm, Sweden, June, 1998. [30] J. berg, P. Ellervee, Revolver: A high performance MIMD architecture for collision free computing , In Proc. of EuroMicro 98, pp. 301 308, Vsters, Sweden, Aug. 25 27, 1998. Theses [31] J. berg, Tuning of JET Transmission Line Antenna System During ICRH , Master s Thesis, Fusion Plasma ....

....SOLAR. The system is then partitioned into DesignUnits that implements the behaviour and ChannelUnits that implements the communication. The channel behaviour is selected from a library of protocols. The selection of the communication protocol is treated as an allocation problem by Daveau et al. [30, 27]. Function calls representing communicating primitives of the selected protocol is then inserted into the DesignUnits. The advantage with the method is its clean separation of communication from behaviour. A method arguing against the use of protocol libraries for selecting of an appropriate ....

J.-M, Daveau, T.B. Ismail, A.A. Jerraya, "Synthesis of System-Level Communication by an Allocation-Based Approach", In Proc. of the 8th International Symposium on System Synthesis (ISSS), pp. 150-155, 1995.

.... known NP complete problem [9] 10] Indeed, some prior e orts deal with the heterogeneous allocation problem but ignore communication [11] or treat communication in a simpli ed manner e.g. without true resource contention [12] 13] consider only bus bandwidth e ects and not true contention [14]; are oriented to the non hard real time arena [15] or include realistic communication models, but are not fully automated [16] etc. In addition to communication arbitration and heterogeneous processor scheduling, the nal major target system considerations are related to task initiation and ....

Jean-Marc Daveau, Tarek Ben Ismail, and Ahmed A. Jerraya, \Synthesis of system-level communication by an allocation approach, " in Proc. of the 8 ACM/IEEE Int. Symp. on System Synthesis, 13-15 September 1995, pp. 150-5, Cannes, France.

....of connectivity wiring, I) In High Level Synthesis, Narayan et al. 20] synthesize the bus structure and communication protocols to implement a set of virtual communication channels, trading off the width of the bus and the performance of the processes communicating over it. Daveau et al. [7] present a library based exploration approach, where they use a library of connectivity components, with different costs and performance. We complement these approaches by exploring the connectivity design space in terms of all the three design goals: cost, performance and power simultaneously. ....

J-M. Daveau, T. Ben Ismail, and A. Jerraya. Synthesis of system-level communication by an allocation-based approach. In ISSS, 1995.

....hardware [1, 2, 3, 4, 5, 6, 7, 8, 9] Those that do not ignore communication altogether either assume a fixed communication protocol (e.g. PCI based buses) or select from a communication library of a few alternative protocols. Research on system level synthesis of communication architectures [10, 11, 12, 13] mostly deals with synthesis of the communication architecture topology, which refers to the manner in which components are structurally connected through dedicated links or shared communication channels (buses) While topology selection is a critical step in communication architecture design, ....

J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of system-level communication by an allocation based approach ," in Proc. Int. Symp. System Level Synthesis, pp. 150--155, Sept. 1995.

....based on the library cost functions. By composing this subset the algorithm returns the detailed topology of the final optimum cost architecture that is guaranteed to satisfy all the original requirements. 1. 1 Related Work Among the several releted papers published in recent years, the authors of [4] split the development of the communication architecture in two steps: channel binding and channel mapping. The former binds virtual communication units to high level communication channels, while the latter associates to each unit a tree of alternative physical implementations from a library. ....

J.M. Daveau, T. B. Ismail, and A.A. Jerraya. Synthesis of system level communication by an allocation based approach. In International Symposium on System Synthesis, pages 150--155, 1995.

....subset based on the library cost functions. By composing this subset the algorithm returns the detailed topology of the final optimum cost architecture that is guaranteed to satisfy all the original requirements. Among the several related papers published in recent years, the authors of [3] split the development of the communication architecture in two steps: channel binding and channel mapping. The former binds virtual communication units to high level communication channels, while the latter associates to each unit a tree of alternative physical implementations from a library. ....

J. Daveau, T. B. Ismail, and A. Jerraya. Synthesis of system level communication by an allocation based approach. In International Symposium on System Synthesis, pages 150--155, 1995.

....consists in determining for each HW SW transfer: the type of transfer (synchronous or asynchronous) the needed hardware support and the associated protocol, the transfer mode (DMA or memory mapped I O) Previous works have focused on communication synthesis after HW SW partitioning. In [4] and [15] the aim is to maximize utilization bandwidths of buses by analyzing peak and average data transfer rates over communication channels but they do not consider the scheduling of tasks after partitioning. However, this scheduling constitutes a set of timing constraints that communications ....

DAVEAU J.M., ISMAIL T.B., JERRAYA A.A., Synthesis of Systemlevel communication by an allocation-based approach. Int. Synposium on System Synthesis, pages 150-155. Cannes - France, sept. 13-15, 1995.

....of abstraction [2, 7] The use of communication abstraction provides for a tradeoff between simulation time and accuracy, however, these techniques still require a simulation of the complete system. # Static system performance estimation techniques that include models of the communication time [4, 8, 9, 10, 11]. These techniques often assume systems where the computations and communications can be statically scheduled. Further, the communication time estimates used in these systems are either overly optimistic, since they ignore dynamic effects such as wait time due to bus contention (e.g. 10, 11] or ....

J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of system-level communication by an allocation based approach ," in Proc. Int. Symp. System Level Synthesis, pp. 150--155, Sept. 1995.

....bridge previous research has focussed on optimally mapping system functionality onto components, comparatively little work has addressed mapping a system s data and control communications onto an onchip communication architecture. Research on system level synthesis of communication architectures [9, 10, 11, 12] mostly deals with synthesis of the communication architecture topology. While topology selection can be a critical step in custom communication architecture design, in this work we address a complementary problem. We assume the topology is predetermined by choosing a template communication ....

....based on simulation of the entire system, modeling communication at varying levels of abstraction [15, 16] However the high computational cost of simulation based techniques make them infeasible when exploring a large design space. More efficient static performance estimation techniques include [8, 9, 10, 11, 17], but they do not model dynamic effects like bus contention accurately enough to drive an exploration optimization methodology. We adopt a trace based performance analysis framework in our work [18, 19] which provides for accurate modeling of dynamic effects, while at the same time being far more ....

J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of system-level communication by an allocation based approach ," in Proc. Int. Symp. System Level Synthesis, pp. 150--155, Sept. 1995.

....hardware [1, 2, 3, 4, 5, 6, 7, 8] Those that do not ignore communication altogether, either assume a fixed communication protocol (e.g. PCI based buses) or select from a communication library of a few alternative protocols. Research on system level synthesis of communication architectures [9, 10, 11, 12] mostly deals with synthesis of the communication architecture topology. While topology selection is a critical step in communication architecture design, equally important is the design of the protocols (e.g. timeslice based [13] static priority based [14] etc. usedbythechannels buses in the ....

J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of system-level communication by an allocation based approach ," in Proc. Int. Symp. System Level Synthesis, pp. 150--155, Sept. 1995.

....of abstraction [7, 8] The use of communication abstraction provides for a tradeoff between simulation time and accuracy, however, these techniques still require a simulation of the complete system. # Static system performance estimation techniques that include models of the communication time [9, 10, 11, 12, 13]. These techniques often assume systems where the computations and communications can be statically scheduled. Further, the communication time estimates used in these systems are either overly optimistic, since they ignore dynamic effects such as wait time due to bus contention (e.g. 12, 13] or ....

J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of system-level communication by an allocation based approach ," in Proc. Int. Symp. System Level Synthesis, pp. 150--155, Sept. 1995.

....and select an architecture to implement its communications, could result in a system with significantly sub optimal performance. Recognizing this, there has been recent interest in developing fast and accurate system level performance analysis and communication architecture synthesis techniques [6, 7, 8, 9, 10, 11, 12, 13, 14]. However, these efforts do not provide any quantitative assessment or analysis of the relative merits and demerits of commonly available communication architectures for various classes of application traffic. The focus of this paper is to systematically and quantitatively explore the dependence ....

J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of systemlevel communication by an allocation based approach ," in Proc. Int. Symp. System Level Synthesis, pp. 150--155, Sept. 1995.

....consider the impact of communication effects during HW SW partitioning and mapping, they either assume a fixed communication protocol (e.g. PCI based buses) or select from a communication library of a few alternative protocols. Research on system level synthesis of communication architectures [10, 11, 12, 13] mostly deals with synthesis of the communication architecture topology, which refers to the manner in which components are structurally connected through dedicated links or shared communication channels (buses) While topology selection is a critical step in communication architecture design, ....

J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of system-level communication by an allocation based approach ," in Proc. Int. Symp. System Level Synthesis, pp. 150--155, Sept. 1995.

....develop a strategy which takes them into consideration for process scheduling. Many efforts dedicated to communication synthesis have concentrated on the synthesis support for the communication infrastructure but without considering hard real time constraints and system level scheduling aspects [Cho95b, Dav95, Knu99, Nar94]. Lower level communication synthesis aspects under timing constraints have been addressed in [Ort98, Knu99] We have to mention here some results obtained in extending real time schedulability analysis so that network communication aspects can be handled. In [Tin95] for example, the CAN ....

J. M. Daveau, T. Ben Ismail, A. A. Jerraya, "Synthesis of System-Level Communication by an AllocationBased Approach", Proc. Int. Symposium on System Synthesis, 150-155, 1995. 107

....of abstraction [2, 7] The use of communication abstraction provides for a tradeoff between simulation time and accuracy, however, these techniques still require a simulation of the complete system. ffl Static system performance estimation techniques that include models of the communication time [4, 8, 9, 10, 11]. These techniques often assume systems where the computations and communications can be statically scheduled. Further, the communication time estimates used in these systems are either overly optimistic, since they ignore dynamic effects such as wait time due to bus contention (e.g. 10, 11] or ....

J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of systemlevel communication by an allocation based approach ," in Proc. Int. Symp. System Level Synthesis, pp. 150--155, Sept. 1995.

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Jean-Marc Daveau, Tarek Ben Ismail and Ahmed Amine Jerraya, "Synthesis of System-Level Communication by an allocation-Based Approach", in Proc. of the 8 ISSS, pp.150-155, 1995.

....to be able to reuse existing communication models through a library, to be able to choose between different communication protocols. 2. 2 Previous Work Most current approaches in communication synthesis for codesign have focused on interface synthesis for a homogeneous specification of systems [2,3,4,5]. In [6] Vahid presents an object oriented communication library for hardware software codesign. The PIA co simulation tool [7] allows to specify multiple communication models for each interface in the system and to switch dynamically to another communication model during the simulation run. The ....

Jean-Marc Daveau, Tarek Ben Ismail and Ahmed Amine Jerraya, "Synthesis of System-Level Communication by an allocation-Based Approach", in Proc. of the 8 th ISSS, pp.150155, 1995.

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J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of system-level communication by an allocation based approach," in Proc. Int. Symp. Syst. Level Synthesis, Sept. 1995, pp. 150--155.

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J. Daveau, T. B. Ismail, and A. A. Jerraya, "Synthesis of system-level communication by an allocation based approach," in Proc. Int. Symp. System Level Synthesis, Sept. 1995, pp. 150--155.

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