"Satoshi Ohshima,Ichitaro Yamazaki,Akihiro Ida,Rio Yokota","Optimization of Numerous Small Dense-Matrix?Vector Multiplications in H-matrix Arithmetic on GPU","Auto-Tuning for Multicore and GPU (ATMG) In conjunction with the IEEE MCSoC-19",,,,,,2019,Oct. "Ichitaro Yamazaki,Ahmad Abdelfattah,Akihiro Ida,Satoshi Ohshima,Stanimire Tomov,Rio Yokota,Jack Dongarra","Analyzing Performance of BiCGStab with Hierarchical Matrix on GPU clusters","32nd IEEE International Parallel & Distributed Processing Symposium",,,,,,2018,May "Satoshi Ohshima,Ichitaro Yamazaki,Akihiro Ida,Rio Yokota","Optimization of Hierarchical Matrix Computation on GPU","SC Asia",,,,,,2018,Mar. "‘哇 ‘Žj,ŽRè Žs‘¾˜Y,ˆÉ“c –¾O,‰¡“c—‰›","GPUƒNƒ‰ƒXƒ^ã‚É‚¨‚¯‚éŠK‘wŒ^s—ñŒvŽZ‚ÌÅ“K‰»","Summer United Workshops on Parallel, Distributed and Cooperative Processing",,,,,,2017,July