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Creation of large FPGAs needs radical efficient changes in architecture to improve speed, density and software mapping time. Based on industry experience with standard ASICs, we believe that partitioning and hierarchy become an obligation for FPGA hardware and software developments. As an alternative we propose a new Multilevel hierarchical FPGA (MFPGA)(More)
This paper presents an improved interconnect network for Tree-based FPGA architecture that unifies two unidirec-tional programmable networks. New tools are developed to place and route the largest benchmark circuits, where different optimization techniques are used to get an optimized architecture. The effect of variation in LUT and cluster size on the(More)
A novel 3D Tree-based Multilevel FPGA architecture that unifies two unidirectional programmable interconnection network is presented in this paper. In a Tree based architecture, the interconnects are arranged in a multi-level network with the logic blocks placed at different Tree levels using Butterfly-Fat-Tree network topology. 2D physical layout(More)
This paper presents an improved Tree-based architecture that unifies two unidirectional programmable networks: A predictible downward network based on the Butter y-Fat-Tree topology, and an upward network using hierarchy. Studies based on Rent's Rule show that switch requirements in this architecture grow slower than in traditional Mesh topologies. New(More)
We present a routability-driven top-down clustering technique for area and power reduction in clustered FPGAs. This technique is based on a multilevel partitioning approach. It leads to better device utilization, savings in area, and reduction in power consumption. Routing area reduction of 15% is achieved over previously published results. Power(More)
This paper presents a new Multilevel hierarchical FPGA (MFPGA) architecture that unifies two unidirectional programmable networks: A predictible downward network based on the Butterfly-Fat-Tree topology, and an upward network using hierarchy. Studies based on the Rent's Rule show that wiring and switch requirements in the MFPGA grow slower than in(More)
In this paper we present a new clustered mesh FPGA architecture where each cluster local interconnect is implemented as an MFPGA tree network [6]. Unlike previous clustered mesh architectures, the mesh of tree allows us to consider large clusters sizes (thanks to MFPGA depopu-lated local interconnect). Experimentation shows that we obtain a reduction of 14%(More)
An innovative 3D physical design exploration methodology for Tree-based FPGA architecture is presented in this paper. In a Tree-based FPGA architecture, the interconnects are arranged in a multidimensional network with the logic unites and switch blocks placed at different levels, using a Butterfly-Fat Tree network topology. A 3D physical design exploration(More)
In this paper we present the effect of lookup table (LUT)size (no of inputs to a LUT) and cluster size (no of LUTs per cluster) on the area and critical path of a tree based FPGA architecture (MFPGA). For this purpose we have designed a flow that places and routes a set of bench mark circuits on different tree based architectures with varying lookup table(More)