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 BINDU: deadlock-freedom with one bubble in the network 相关领域
计算机科学
死锁
气泡
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| 其它 | Every interconnection network must ensure, for its functional correctness, that it is deadlock free. A routing deadlock occurs when there is a cyclic dependency of packets when acquiring the buffers of the routers. Prior solutions have provisioned an extra set of escape buffers to resolve deadlocks, or restrict the path that a packet can take in the network by disallowing certain turns. This either pays higher power/area overhead or impacts performance. In this work, we demonstrate that (i) keeping one virtual-channel in the entire network (called 'Bindu') empty, and (ii) forcing it to move through all input ports of every router in the network via a pre-defined path, can guarantee deadlock-freedom. We show that our scheme (a) is topology agnostic (we evaluate it on multiple topologies, both regular and irregular), (b) does not impose any turn restrictions on packets, (c) does not require an extra set of escape buffers, and (d) is free from the complex circuitry for detecting and recovering from deadlocks. We report 15% average improvement in throughput for synt |
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研友_仲剑心
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2020-10-08 15:01:08 发布，悬赏 10 积分
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