REPLICA T7-16-128 - A 2048-threaded 16-core 7-FU chained VLIW chip multiprocessor

Martti Forsell, Jussi Roivainen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    3 Citations (Scopus)


    Processor-based solutions are getting increasingly popular over dedicated logic/accelerators among embedded system designers due to their flexibility and programmability. The drawbacks - weaker performance and higher power consumption - are usually compensated with multicore and application-specific technologies. Unfortunately, these optimizations - exploiting parallelism and heterogeneity - lead to direction that makes programming difficult and result to less flexible designs. REPLICA is VTT's effort to solve the performance and programmability problems of current multicore processors without tampering flexibility. For performance, it addresses the essence of parallel computing - cost-efficient synchronization, high intercommunication bandwidth and latency toleration - with a new collection of architectural techniques: multithreading, sparse/multimesh network-on-chip and wave-based synchronization. Programmability is made simple by supporting efficient execution of synchronous parallel algorithms and flexibility is provided with parametric nature of the architecture allowing for highly different configurations. In this paper we introduce a 2048-threaded 16-core prototype of the REPLICA chip multiprocessor. The main principles of the architecture as well as the structure of the prototype are explained. Preliminary comparison to current alternatives is given.

    Original languageEnglish
    Title of host publicationConference Record of The Forty-Eighth Asilomar Conference on Signals, Systems & Computers
    EditorsMichael B. Matthews
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Number of pages5
    ISBN (Electronic)978-147998297-4
    Publication statusPublished - 2015
    MoE publication typeNot Eligible
    Event48th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015 - Pacific Grove, United States
    Duration: 2 Nov 20145 Nov 2014


    Conference48th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015
    Country/TerritoryUnited States
    CityPacific Grove


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