Chip-Multiprocessor using Data Driven Multithreading (DDM) and Conventional Microprocessors Cores
Pedro Trancoso,
Department of Computer Science, University of Cyprus –
Abstract:
Data-Driven Multithreading (DDM) is a non-blocking multithreading execution model that tolerates inter-node latency by scheduling threads for execution based on data availability. In order to exploit the benefits of dataflow execution without the penalties of custom designed systems, we show how DDM may be implemented in systems equipped with regular off-the-shelf microprocessors. In addition, we use the characteristics of DDM scheduling to implement a cache management policy (CacheFlow) that further improves the performance.
In this presentation we show a brief evaluation of DDM and CacheFlow by simulating the execution of several SPLASH-2 scientific applications on a DDM network of workstations (D2NOW) with up to 32 nodes. The results are very encouraging as the speedup observed for a 16- and 32-node configuration was 14.4 and 26.0, respectively. In addition, we show how this work will be extended to the Chip-Multiprocessor architecture, as well as preliminary results for this new implementation.
Date: 2005-Feb-24 Time: 14:00:00 Room: 905 (Auditório Omega)
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Upcoming Events
INESC Brussels HUB Winter Meeting 2023

This edition of the HUB Winter Meeting will be co-organised with Science Business and will take place on the 30 and 31 January, in Lisbon, at Instituto Superior Técnico, Department of Computer Science and Engineering.
Please see below a summary of the agenda, this will be updated on the INESC Brussels HUB website regularly (confirmed speakers and other relevant info). Places for onsite participation are limited so registration is mandatory. Online participants will be sent a ZOOM link for each specific session on the 27th January.
INESC Brussels HUB website: https://hub.inesc.pt/
Monday, 30 January
a) Digital Europe Programme & Chips Act: state of play and possibilities for INESC.
9h to 10h30 GMT
(Exclusive for INESC researchers and administrators).
b) Science Business: how can INESC tap into Science Business network, activities and communications tools.
(Exclusive for INESC researchers and administrators).
c) Networking Lunch (for all onsite participants).
d) Roundtable: From rhetoric to reality – Embedding international strategy in the DNA of research organisations.
(Closed-door, roundtable workshop, Chatham House rules, open to INESC researchers and administrators, external participants by invitation only).
e) Networking Dinner
(By invitation only – INESC researchers participating onsite in the event are elegible to join).
Tuesday, 31 January
f) Workshop: How they did it? Strategic positioning for structural success in Horizon Europe: a discussion of best practices.
(Exclusive for INESC researchers, administrators and international invited speakers).
g) The public consultation on European R&I Programmes: Towards FP10.
(Closed-door, roundtable workshop, Chatham House rules, open to INESC researchers and administrators, external participants by invitation only).
h) Networking Lunch (for all onsite participants).
i) Management Committee meeting (Directors and POB members)
The HUB Winter Meeting aims at bringing together researchers and administrators from the 5 INESC institutes, affiliated higher education institutions in Portugal and abroad, with key European and global players, to:
– Discuss key research and innovation issues at EU level.
– Inform institutional policy and strategy.
– Exchange best-practices about R&I management, career development and policy positioning.
– Promote, discuss and deliver vision, visibility, networking and impactful communication.
– Create, identify and deepen partnerships and collaboration opportunities for collaborative R&I.