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arXiv 2206.04796cs.ARcs.SYeess.SY
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扩展内存加速器:利用片上无线通信进行基于AIMC的CNN推理

Scale up your In-Memory Accelerator: Leveraging Wireless-on-Chip Communication for AIMC-based CNN Inference

Nazareno Bruschi, Giuseppe Tagliavini, Francesco Conti, Sergi Abadal, Alberto Cabellos-Aparicio, Eduard Alarcón, Geethan Karunaratne, Irem Boybat, Luca Benini, Davide Rossi

摘要:

模拟存内计算(AIMC)正在成为异构计算的一种颠覆性范例,与传统的矩阵向量乘法数字信号处理架构相比,它有可能提供数量级更高的峰值性能和效率。然而,为了在实际应用中维持这种吞吐量,AIMC瓦片必须以非常高的带宽和低延迟提供数据;这对片上通信基础设施造成了前所未有的压力,这成为系统的性能和效率瓶颈。在这种情况下,新兴的片上无线通信范例的性能和可塑性提供了所需的突破,以在大型AIMC设备中的大规模片上通信。这项工作提出了一种具有瓦片间无线通信的多瓦片AIMC架构,该架构集成了多个异构计算集群,嵌入了并行RISC-V内核和AIMC瓦片的混合。我们进行了广泛的设计空间探索所提出的架构,并讨论了利用新兴的片上通信技术,如无线收发器在毫米波和太赫兹波段的好处。

英文摘要:

Analog In-Memory Computing (AIMC) is emerging as a disruptive paradigm for heterogeneous computing, potentially delivering orders of magnitude better peak performance and efficiency over traditional digital signal processing architectures on Matrix-Vector multiplication. However, to sustain this throughput in real-world applications, AIMC tiles must be supplied with data at very high bandwidth and low latency; this poses an unprecedented pressure on the on-chip communication infrastructure, which becomes the system's performance and efficiency bottleneck. In this context, the performance and plasticity of emerging on-chip wireless communication paradigms provide the required breakthrough to up-scale on-chip communication in large AIMC devices. This work presents a many-tile AIMC architecture with inter-tile wireless communication that integrates multiple heterogeneous computing clusters, embedding a mix of parallel RISC-V cores and AIMC tiles. We perform an extensive design space exploration of the proposed architecture and discuss the benefits of exploiting emerging on-chip communication technologies such as wireless transceivers in the millimeter-wave and terahertz bands.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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