RT Journal Article
T1 A new AXT format for an efficient SpMV product using AVX-512 instructions and CUDA☆,☆☆,★
A1 Coronado Barrientos, Edoardo
A1 Antonioletti, Mario
A1 García Loureiro, Antonio Jesús
K1 Sparse Matrix Vector product
K1 AVX-512 instructions
K1 MKL Library
K1 CUDA
K1 cuSPARSE Library
K1 Segmented Scan algorithm
AB The Sparse Matrix-Vector (SpMV) product is a key operation used in many scientific applications. This work proposes a new sparse matrix storage scheme, the AXT format, that improves the SpMV performance on vector capability platforms. AXT can be adapted to different platforms, improving the storage efficiency for matrices with different sparsity patterns. Intel AVX-512 instructions and CUDA are used to optimise the performances of the four different AXT subvariants. Performance comparisons are made with the Compressed Sparse Row (CSR) and AXC formats on an Intel Xeon Gold 6148 processor and an NVIDIA Tesla V100 Graphics Processing Units using 26 matrices. On the Intel platform the overall AXT performance is 18% and 44.3% higher than the AXC and CSR respectively, reaching speed-up factors of up to x7.33. On the NVIDIA platform the AXT performance is 44% and 8% higher than the AXC and CSR performances respectively, reaching speed-up factors of up to x378.5
PB Elsevier
YR 2021
FD 2021
LK http://hdl.handle.net/10347/27895
UL http://hdl.handle.net/10347/27895
LA eng
NO Advances in Engineering Software 156 (2021) 102997. https://doi.org/10.1016/j.advengsoft.2021.102997
DS Minerva
RD 24 abr 2026