RT info:eu-repo/semantics/article
T1 An autotuning approach to select the inter-GPU communication library on heterogeneous systems
A1 Cámara Moreno, Jesús
A1 Cuenca, Javier
A1 Galindo, Víctor
A1 Vicente, Arturo
A1 Boratto, Murilo
K1 Autotuning
K1 Communication libraries
K1 Multi-GPU
K1 Heterogeneous computing
K1 1203.17 Informática
AB In this work, an automatic optimisation approach for parallel routines on multi-GPUsystems is presented. Several inter-GPU communication libraries (such as CUDA-Aware MPI or NCCL) are used with a set of routines to perform the numerical oper-ations among the GPUs located on the compute nodes. The main objective is theselection of the most appropriate communication library, the number of GPUs to beused and the workload to be distributed among them in order to reduce the cost ofdata movements, which represent a large percentage of the total execution time. Tothis end, a hierarchical modelling of the execution time of each routine to be opti-mised is proposed, combining experimental and theoretical approaches. The resultsshow that near-optimal decisions are taken in all the scenarios analysed.
PB Springer
SN 0920-8542
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/75227
UL https://uvadoc.uva.es/handle/10324/75227
LA eng
NO The Journal of Supercomputing, 2024, vol. 81, n. 1
NO Producción Científica
DS UVaDOC
RD 28-abr-2025