RT Journal Article T1 Exploring stream parallel patterns in distributed MPI environments A1 López Gómez, Javier A1 Fernández Muñoz, Javier A1 Río Astorga, David del A1 Dolz Zaragoza, Manuel Francisco A1 García Sánchez, José Daniel AB In recent years, the large volumes of stream data and the near real-time requirements of data streaming applications have exacerbated the need for new scalable algorithms and programming interfaces for distributed and shared-memory platforms. To contribute in this direction, this paper presents a new distributed MPI back end for GrPPI, a C++ high-level generic interface of data-intensive and stream processing parallel patterns. This back end, as a new execution policy, supports distributed and hybrid (distributed+shared-memory) parallel executions of the Pipeline and Farm patterns, where the hybrid mode combines the MPI policy with a GrPPI shared-memory one. These patterns internally leverage distributed queues, which can be configured to use two-sided or one-sided MPI primitives to communicate items among nodes. A detailed analysis of the GrPPI MPI execution policy reports considerable benefits from the programmability, flexibility and readability points of view. The experimental evaluation of two different streaming applications with different distributed and shared-memory scenarios reports considerable performance gains with respect to the sequential versions at the expense of negligible GrPPI overheads. PB Elsevier B.V. SN 0167-8191 SN 1872-7336 (online) YR 2019 FD 2019-05 LK https://hdl.handle.net/10016/29711 UL https://hdl.handle.net/10016/29711 LA eng NO ASPIDE: Exascale programIng models for extreme data processing NO This work was partially supported by the EU project No. 801091 "ASPIDE: Exascale programming models for extreme data process ing"; and the project TIN2013-41350-P "Scalable Data Management Techniques for High-End Computing Systems" from the Ministerio de Economía y Competitividad , Spain. DS e-Archivo RD 18 jul. 2024