Abstract:Abstract-The scope of this paper is to design and implement a scalable QR factorization solver that can deliver the fastest performance for tall and skinny matrices and square matrices on modern supercomputers. The new solver, named scalable universal communication-avoiding QR factorization (suCAQR), introduces a simplified and tuning-less way to realize the communicationavoiding QR factorization algorithm to support matrices of any shapes. The software design includes a mixed usage of physical and logical dat… Show more
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