FlexiDRAM: A Flexible in-DRAM Framework to Enable Parallel General-Purpose Computation

FlexiDRAM: A Flexible in-DRAM Framework to Enable Parallel General-Purpose Computation
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FlexiDRAM:一种灵活的 DRAM 框架,可实现并行通用计算

DOI:
10.1145/3531437.3539721
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发表时间:
2022
期刊:
2022.
影响因子:
--
通讯作者:
Angizi, S
Angizi, S
中科院分区:
--
文献类型:
--
作者:
Zhou, R;Roohi, A;Misra, D;Angizi, S

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在本文中,我们提出了一个名为FlexiDRAM的灵活的dram处理框架,它支持复杂的批量位操作的有效实现。该框架是在新的可重构DRAM加速器之上开发的,该加速器利用DRAM子阵列的模拟操作,并将其提升到在存储在同一位线上的操作数之间实现XOR2-MAJ3操作。FlexiDRAM首先生成所需逻辑的有效XOR-MAJ表示,然后适当地将DRAM行分配给操作数以执行任何DRAM内的计算。我们开发计算dram内操作所需的ISA和软件支持。FlexiDRAM将当前的内存架构转换为大规模并行计算单元,可以用来显著降低复杂工作负载的延迟和能耗。我们广泛的电路到架构模拟结果表明,FlexiDRAM在两种众所周知的深度学习工作负载上平均实现了约15倍的节能和13倍的加速,优于最近的dram处理平台。
In this paper, we propose a Flexible processing-in-DRAM framework named FlexiDRAM that supports the efficient implementation of complex bulk bitwise operations. This framework is developed on top of a new reconfigurable in-DRAM accelerator that leverages the analog operation of DRAM sub-arrays and elevates it to implement XOR2-MAJ3 operations between operands stored in the same bit-line. FlexiDRAM first generates an efficient XOR-MAJ representation of the desired logic and then appropriately allocates DRAM rows to the operands to execute any in-DRAM computation. We develop ISA and software support required to compute in-DRAM operation. FlexiDRAM transforms current memory architecture to a massively parallel computational unit and can be leveraged to significantly reduce the latency and energy consumption of complex workloads. Our extensive circuit-to-architecture simulation results show that averaged across two well-known deep learning workloads, FlexiDRAM achieves ∼ 15 × energy-saving and 13 × speedup over the GPU outperforming recent processing-in-DRAM platforms.
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