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Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/73F41371-2CA9-4267-A400-CC209CC96951 | - |
| Identifier | https://doi.org/10.1109/ICSAMOS.2009.5289226 | - |
| Language | en | - |
| Extent | 7 pages | en |
| Title | FPGA implementation of a configurable cache/scratchpad memory with virtualized user-level RDMA capability | en |
| Creator | Pnevmatikatos Dionysios | en |
| Creator | Πνευματικατος Διονυσιος | el |
| Creator | Vassilis Papaefstathiou | en |
| Creator | George Nikiforos | en |
| Creator | George Kalokerinos | en |
| Creator | Xiaojun Yang | en |
| Publisher | Institute of Electrical and Electronics Engineers | en |
| Content Summary | We report on the hardware implementation of a local memory system for individual processors inside future chip multiprocessors (CMP). It intends to support both implicit communication, via caches, and explicit communication, via directly accessible local (ldquoscratchpadrdquo) memories and remote DMA (RDMA). We provide run-time configurability of the SRAM blocks near each processor, so that part of them operates as 2nd level (local) cache, while the rest operates as scratchpad. We also strive to merge the communication subsystems required by the cache and scratchpad into one integrated Network Interface (NI) and Cache Controller (CC), in order to economize on circuits. The processor communicates with the NI in user-level, through virtualized command areas in scratchpad; through a similar mechanism, the NI also provides efficient support for synchronization, using two hardware primitives: counters, and queues. We describe the block diagram, the hardware cost, and the latencies of our FPGA-based prototype implementation, which integrates four MicroBlaze processors, each with 64 KBytes of local SRAM, a crossbar NoC, and a DRAM controller on a Xilinx-5 FPGA. One-way, end-to-end, user-level communication completes within about 30 clock cycles for short transfer sizes. | en |
| Type of Item | Πλήρης Δημοσίευση σε Συνέδριο | el |
| Type of Item | Conference Full Paper | en |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-10-19 | - |
| Date of Publication | 2009 | - |
| Subject | Network on chip technology | en |
| Subject | NoC technology | en |
| Subject | networks on a chip | en |
| Subject | network on chip technology | en |
| Subject | noc technology | en |
| Bibliographic Citation | G.Kalokerinos, V. Papaefstathiou, G. Nikiforos, S. Kavadias, M.Katevenis, Pnevmatikatos , X. Yang, "FPGA implementation of a configurable cache/scratchpad memory with virtualized user-level RDMA capability,"in 2009 Intern. Conf. on Embedded Comp. Systems: Architectures, Modellin and Simulation,pp.149 - 156.doi:10.1109/ICSAMOS.2009.5289226 | en |
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