Exploració per autor "Unsal, Osman Sabri"
Ara es mostren els items 21-40 de 108
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Clock gate on abort: Towards energy-efficient hardware transactional memory
Sanyal, Sutirtha; Roy, Sourav; Cristal Kestelman, Adrián; Unsal, Osman Sabri; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2009)
Text en actes de congrés
Accés obertTransactional Memory (TM) is an emerging technology which promises to make parallel programming easier compared to earlier lock based approaches. However, as with any form of speculation, Transactional Memory too wastes a ... -
Commit on overflow
Stipic, Srdjan; Armejach, Adrià; Unsal, Osman Sabri; Cristal Kestelman, Adrián; Valero Cortés, Mateo (2014)
Report de recerca
Accés obertCurrent commercial CPUs have hardware support for speculative lock elision (SLE). SLE tries to elide the lock by speculatively executing lock protected critical section. If the speculation fails, SLE acquires the lock and ... -
CRC-based memory reliability for task-parallel HPC applications
Subasi, Omer; Unsal, Osman Sabri; Labarta Mancho, Jesús José; Yalcin, Gulay; Cristal Kestelman, Adrián (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialMemory reliability will be one of the major concerns for future HPC and Exascale systems. This concern is mostly attributed to the expected massive increase in memory capacity and the number of memory devices in Exascale ... -
DaSH: a benchmark suite for hybrid dataflow and shared memory programming models
Gajinov, Vladimir; Stipic, Srdjan; Eric, Igor; Unsal, Osman Sabri; Ayguadé Parra, Eduard; Cristal Kestelman, Adrián (2015-06-01)
Article
Accés restringit per política de l'editorialThe current trend in development of parallel programming models is to combine different well established models into a single programming, model in order to support efficient implementation of a wide range of real world ... -
DaSH: a benchmark suite for hybrid dataflow and shared memory programming models: with comparative evaluation of three hybrid dataflow models
Gajinov, Vladimir; Stipic, Srdjan; Eric, Igor; Unsal, Osman Sabri; Ayguadé Parra, Eduard; Cristal Kestelman, Adrián (Association for Computing Machinery (ACM), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialThe current trend in development of parallel programming models is to combine different well established models into a single programming model in order to support efficient implementation of a wide range of real world ... -
Designing and modelling selective replication for fault-tolerant HPC applications
Subasi, Omer; Yalcin, Gulay; Zyulkyarov, Ferad; Unsal, Osman Sabri; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés obertFail-stop errors and Silent Data Corruptions (SDCs) are the most common failure modes for High Performance Computing (HPC) applications. There are studies that address fail-stop errors and studies that address SDCs. However ... -
Determinism at standard-library level in TM-based applications
Smiljkovic, Vesna; Unsal, Osman Sabri; Cristal Kestelman, Adrián; Valero Cortés, Mateo (2017-02-01)
Article
Accés obertDeterministic execution of a multi-threaded application guarantees that threads access shared memory in the same order and the application gives the same output whenever it runs with the same input parameters. Determinism ... -
DeTrans: Deterministic and parallel execution of transactions
Smiljkovic, Vesna; Stipic, Srdjan; Fetzer, Christof; Unsal, Osman Sabri; Cristal Kestelman, Adrián; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialDeterministic execution of a multithreaded application guarantees the same output as long as the application runs with the same input parameters. Determinism helps a programmer to test and debug an application and to provide ... -
DLP acceleration on general purpose cores
Duric, Milovan; Palomar Pérez, Óscar; Unsal, Osman Sabri; Cristal Kestelman, Adrián; Valero Cortés, Mateo (Barcelona Supercomputing Center, 2015-05-05)
Text en actes de congrés
Accés obertHigh-performance and power-efficient multimedia computing drives the design of modern and increasingly utilized mobile devices. State-of-the-art low power processors already utilize chip multiprocessors (CMP) that add ... -
DVINO: A RISC-V vector processor implemented in 65nm technology
Cabo Pitarch, Guillem; Candon, Gerard; Carril, Xavier; Doblas Font, Max; Dominguez de la Rocha, Marc; González Trejo, Alberto; Hernández Calderón, César Alejandro; Jiménez Arador, Víctor; Kostalampros, Ioannis-Vatistas; Langarita Benítez, Rubén; Leyva Santes, Neiel Israel; López Paradís, Guillem; Mendoza Escobar, Jonnatan; Minervini Minervini, Francesco; Pavón Rivera, Julián; Ramírez Lazo, Cristóbal; Rodas, Narcis; Reggiani, Enrico; Rodriguez, Mario; Rojas Morales, Carlos; Ruíz Ramírez, Abraham Josafat; Soria Pardos, Víctor; Vargas Valdivieso, Iván; Figueras Bagué, Roger; Fontova, Pau; Marimon Illana, Joan; Montabes, Víctor; Cristal Kestelman, Adrián; Hernández Luz, Carles; Moretó Planas, Miquel; Moll Echeto, Francisco de Borja; Palomar Pérez, Óscar; Rubio Sola, Jose Antonio; Sonmez, Nehir; Unsal, Osman Sabri; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2022)
Comunicació de congrés
Accés obertThis paper describes the design, verification, implementation and fabrication of the Drac Vector IN-Order (DVINO) processor, a RISC-V vector processor capable of booting Linux jointly developed by BSC, CIC-IPN, IMB-CNM ... -
Dynamic transaction coalescing
Stipic, Srdjan; Karakostas, Vasileios; Smiljkovic, Vesna; Gajinov, Vladimir; Unsal, Osman Sabri; Cristal Kestelman, Adrián; Valero Cortés, Mateo (Association for Computing Machinery (ACM), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialPrior work in Software Transactional Memory has identified high overheads related to starting and committing transactions that may degrade the application performance. To amortize these overheads, transaction coalescing ... -
Dynamic-vector execution on a general purpose EDGE chip multiprocessor
Duric, Milovan; Palomar Pérez, Óscar; Smith, Aaron; Stanic, Milan; Unsal, Osman Sabri; Cristal Kestelman, Adrián; Valero Cortés, Mateo; Burger, Doug; Veidenbaum, Alexander V (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper proposes a cost-effective technique that morphs the available cores of a low power chip multiprocessor (CMP) into an accelerator for data parallel (DLP) workloads. Instead of adding a special-purpose vector ... -
EcoTM: Conflict-aware economical unbounded hardware transactional memory
Tomić, Saša; Akpinar, Ege; Cristal Kestelman, Adrián; Unsal, Osman Sabri; Valero Cortés, Mateo (Elsevier, 2013)
Text en actes de congrés
Accés obertTransactional Memory (TM) is a promising paradigm for parallel programming. TM allows a thread to make a series of memory accesses as a single, atomic, transaction, while avoiding deadlocks, livelocks, and other problems ... -
Efficient selective replication of critical code regions for SDC mitigation leveraging redundant multithreading
Arslan, Sanem; Unsal, Osman Sabri (Springer, 2021)
Article
Accés obertRedundant multithreading (RMT) is an effective reliability solution that provides thread-level replication; however, it imposes additional overheads in terms of performance loss or energy consumption. Partial-RMT is an ... -
Empowering a helper cluster through data-width aware instruction selection policies
Unsal, Osman Sabri; Ergin, Oguz; Vera Rivera, Francisco Javier; González Colás, Antonio María (IEEE Computer Society, 2006)
Text en actes de congrés
Accés obertNarrow values that can be represented by less number of bits than the full machine width occur very frequently in programs. On the other hand, clustering mechanisms enable cost- and performance-effective scaling of processor ... -
ETP4HPC’s SRA 5 strategic research agenda for High-Performance Computing in Europe 2022: European HPC research priorities 2023-2027
Carpenter, Paul Matthew; Casas, Marc; Unsal, Osman Sabri; Radojkovic, Petar; Martorell Bofill, Xavier; Miranda, Alberto; Guitart Fernández, Jordi; Corbalán González, Julita; Peña Monferrer, Antonio José; Bautista Gomez, Leonardo Arturo; Vázquez García, Miguel; Beltran Querol, Vicenç; Queralt Calafat, Anna; Nou Castell, Ramon; Borrell Pol, Ricard; Houzeaux, Guillaume; Serradell Maronda, Kim; Carrera Pérez, David; García Sáez, Artur; Puchol García, Carlos (2022-09)
Report de recerca
Accés obertThis document feeds research and development priorities devel-oped by the European HPC ecosystem into EuroHPC’s Research and Innovation Advisory Group with an aim to define the HPC Technology research Work Programme and ... -
Evaluating built-in ECC of FPGA on-chip memories for the mitigation of undervolting faults
Salami, Behzad; Unsal, Osman Sabri; Cristal Kestelman, Adrián (Institute of Electrical and Electronics Engineers (IEEE), 2019)
Text en actes de congrés
Accés obertVoltage underscaling below the nominal level is an effective solution for improving energy efficiency in digital circuits, e.g., Field Programmable Gate Arrays (FPGAs). However, further undervolting below a safe voltage ... -
Evaluation of vectorization potential of Graph500 on Intel's Xeon Phi
Stanic, Milan; Palomar Pérez, Óscar; Ratkovic, Ivan; Duric, Milovan; Unsal, Osman Sabri; Cristal Kestelman, Adrián; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés obertGraph500 is a data intensive application for high performance computing and it is an increasingly important workload because graphs are a core part of most analytic applications. So far there is no work that examines if ... -
EVX: vector execution on low power EDGE cores
Duric, Milovan; Palomar Pérez, Óscar; Smith, Aaron; Unsal, Osman Sabri; Cristal Kestelman, Adrián; Valero Cortés, Mateo; Burger, Doug (European Interactive Digital Advertising Alliance (EDAA), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, we present a vector execution model that provides the advantages of vector processors on low power, general purpose cores, with limited additional hardware. While accelerating data-level parallel (DLP) ... -
Exceeding conservative limits: A consolidated analysis on modern hardware margins
Papadimitriou, George; Chatzidimitriou, Athanansios; Gizopoulos, Dimitris; Reddi, Vijay Janapa; Leng, Jingwen; Salami, Behzad; Unsal, Osman Sabri; Cristal Kestelman, Adrián (2020-06)
Article
Accés obertModern large-scale computing systems (data centers, supercomputers, cloud and edge setups and high-end cyber-physical systems) employ heterogeneous architectures that consist of multicore CPUs, general-purpose many-core ...