容错Strassen矩阵乘法
Fault-Tolerant Strassen-Like Matrix Multiplication
摘要:
在这项研究中,我们提出了一个简单的容错类Strassen矩阵乘法的方法。所提出的方法是基于使用两个不同的类Strassen算法,而不是复制一个给定的。我们已经意识到,使用两种不同的算法,新的检查关系的出现,导致更多的本地计算。这些局部计算是使用计算机辅助搜索找到的。为了提高性能,特殊的奇偶校验(额外的)子矩阵乘法(PSMM)产生(其中两个)的代价增加系统的通信/计算成本。我们的初步结果表明,所提出的方法优于具有两个副本的Strassen类算法,并且仅使用2个PSMM就可以确保非常接近三个副本版本的性能,从而将计算节点的总数减少约24%,即,从21到16。
英文摘要:
In this study, we propose a simple method for fault-tolerant Strassen-like matrix multiplications. The proposed method is based on using two distinct Strassen-like algorithms instead of replicating a given one. We have realized that using two different algorithms, new check relations arise resulting in more local computations. These local computations are found using computer aided search. To improve performance, special parity (extra) sub-matrix multiplications (PSMMs) are generated (two of them) at the expense of increasing communication/computation cost of the system. Our preliminary results demonstrate that the proposed method outperforms a Strassen-like algorithm with two copies and secures a very close performance to three copy version using only 2 PSMMs, reducing the total number of compute nodes by around 24\% i.e., from 21 to 16.
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