2026-06-01T09:21:35Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/367862026-02-03T11:56:43Zcom_10630_2254col_10630_37959

Improving Signature Behavior by Irrevocability in Transactional Memory Systems Quislant-del-Barrio, Ricardo Gutiérrez-Carrasco, Eladio Damián López-Zapata, Emilio Plata-González, Óscar Guillermo Ordenadores - Memorias Signatures have been proposed in Hardware Transactional Memory (HTM) to represent read and write sets of transactions and decouple transaction conflict detection from private caches. Generally, signatures are implemented as Bloom filters that allow unbounded read/write sets to be summarized in bounded hardware, at the cost of address aliasing that causes false conflict detection. Such conflicts rises exponentially as signature fills so they can lead a parallel program to perform worse than its sequential counterpart (we say that signature saturates). In this work, irrevocability is proposed to address the signature saturation problem. When a transaction is near to saturate its signature, the transaction enters an irrevocable state that prevents it from being aborted. Then, such a transaction keeps running while the others are either stalled or allowed to run concurrently. Two variants of irrevocability are analyzed in this paper. Experimental evaluation on an HTM simulator shows the benefits in performance and power consumption of the proposed irrevocability mechanisms. 2025-01-23T08:00:22Z 2025-01-23T08:00:22Z 2025-01-23T08:00:22Z 2014 conference output Ricardo Quislant, Eladio Gutierrez, Emilio L. Zapata, Oscar Plata: Improving Signature Behavior by Irrevocability in Transactional Memory Systems. En IEEE 26th International Symposium on Computer Architecture and High Performance Computing, (SBAC-PAD'14), pp. 120-127, 2014 https://hdl.handle.net/10630/36786 eng International Symposium on Computer Architecture and High Performance Computing, (SBAC-PAD'14) París, Francia Octubre 22-24, 2014 open access IEEE Computer Society