Novel flexible buffering architectures for 3D-NoCs

Said, Mostafa; Sarihi, Amin; Patooghy, Ahmad; El-Mohandes, Awny M.; Badawy, Abdel-Hameed A.; Gebali, Fayez

doi:10.1016/j.suscom.2020.100472

Cited by 3 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There have been a number of studies on the NoC router with a centralized shared input buffer [19]- [21] and distributed input buffer sharing scheme [22]- [23]. Centralized shared input buffer structure is a single buffer shared by all input ports.…”

Section: Buffer Sharingmentioning

confidence: 99%

“…Shared-queue router architecture was designed to maximize buffer utilization for boosting network throughput [21]. The novel flexible buffering mechanisms were proposed to improve average throughput for 3D NoCs [22]. The first approach increases the utilization of underutilized buffers based on the number of free slots available in each port, prioritizing minimum occupied buffers.…”

Section: Buffer Sharingmentioning

confidence: 99%

See 1 more Smart Citation

MRBS: An Area-Efficient Multicast Router for Network-on-Chip Using Buffer Sharing

2021

View full text Add to dashboard Cite

Network-on-chip (NoC) has become the mainstream fabric architecture for chip multiprocessor (CMP) design. Owing to the market-driven advancement of modern applications in CMP, multicast traffic is aggressively increasing to support barrier synchronization, multithreading, and cache coherence protocols. Although multicast by branching of packets in the NoC router facilitates shortest path routing, additional branching-induced deadlocks must be circumvented. Existing NoC studies on deadlock-free minimal path routing in multicast traffic have typically deployed additional virtual channels or large buffers to hold entire packets, thereby significantly increasing the router area. Focusing on the area-efficient solution while sustaining the performance, we propose a novel multicast router using buffer sharing (MRBS) to guarantee deadlock-free multicast routing by exploiting the spatial diversity of the input buffer. MRBS ensures minimal path routing without requiring additional virtual channels or large buffers to hold entire packets. Extensive experiments were conducted by varying the buffer, packet, and network sizes, as well as the number of destinations per packet, under random multicast traffic with diverse injection rates. Simulation results show that MRBS achieves a 39.3 % improvement in the area-delay product on average for various network sizes compared to the conventional tree-based router. INDEX TERMSArea-efficient design, buffer sharing, deadlock recovery, multicast communication, network-on-chip, router architecture, tree-based routing Author et al.: Preparation of Papers for IEEE TRANSACTIONS and JOURNALS

show abstract