VNEC: A Vectorized Non-Empty Column Format for SpMV on CPUs - Wang, Luhan; Jia, Haipeng; Xu, Lei; Wei, Cunyang; Li, Kun; Jiang, Xianmeng; Zhang, Yunquan (2024 IEEE International Parallel and Distributed Processing Symposium (IPDPS), Parallel and Distributed Processing Symposium (IPDPS), 2024 IEEE International, IPDPS, 2024)