Now showing items 1-20 of 46

  • A boolean rule-based approach for manufacturability-aware cell routing 

    Cortadella Fortuny, Jordi; Petit Silvestre, Jordi; Gómez Fernández, Sergio; Moll Echeto, Francisco de Borja (2014-03-01)
    Article
    Open Access
    An approach for cell routing using gridded design rules is proposed. It is technology-independent and parameterizable for different fabrics and design rules, including support for multiple-patterning lithography. The core ...
  • Adaptive clock with useful jitter 

    Cortadella Fortuny, Jordi; Lavagno, Luciano; López Muñoz, Pedro; Lupon Navazo, Marc; Moreno Vega, Alberto; Roca Pérez, Antoni; Sapatnekar, Sachin S. (2015-05-19)
    External research report
    Open Access
    The growing variability in nanoelectronic devices due to uncertainties from the manufacturing process and environmental conditions (power supply, temperature, aging) requires increasing design guardbands, forcing circuits ...
  • A fast and retargetable framework for logic-IP-internal electromigration assessment comprehending advanced waveform effects 

    Jain, Palkesh; Cortadella Fortuny, Jordi; Sapatnekar, Sachin S. (2016-06-01)
    Article
    Open Access
    A new methodology for system-on-chip-level logic-IP-internal electromigration verification is presented in this paper, which significantly improves accuracy by comprehending the impact of the parasitic RC loading and ...
  • A hierarchical approach for generating regular floorplans 

    San Pedro Martín, Javier de; Cortadella Fortuny, Jordi; Roca Pérez, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Open Access
    The complexity of the VLSI physical design flow grows dramatically as the level of integration increases. An effective way to manage this increasing complexity is through the use of regular designs which contain more ...
  • Architectural exploration of large-scale hierarchical chip multiprocessors 

    Nikitin, Nikita; San Pedro Martín, Javier de; Cortadella Fortuny, Jordi (2013)
    Article
    Restricted access - publisher's policy
    The continuous scaling of nanoelectronics is increasing the complexity of chip multiprocessors (CMPs) and exacerbating the memory wall problem. As CMPs become more complex, the memory subsystem is organized into more ...
  • Area-optimal transistor folding for 1-D gridded cell design 

    Cortadella Fortuny, Jordi (2013-11)
    Article
    Open Access
    The 1-D design style with gridded design rules is gaining ground for addressing the printability issues in subwavelength photolithography. One of the synthesis problems in cell generation is transistor folding, which ...
  • A Relational view of subgraph isomorphism 

    Cortadella Fortuny, Jordi; Valiente Feruglio, Gabriel Alejandro (1999-10)
    External research report
    Open Access
    This paper presents a novel approach to the problem of finding all subgraph isomorphisms of a (pattern) graph into another (target) graph. A relational formulation of the problem, combined with a representation of relations ...
  • A retargetable and accurate methodology for logic-IP-internal electromigration assessment 

    Jain, Palkesh; Sapatnekar, Sachin S.; Cortadella Fortuny, Jordi (2015)
    Conference report
    Open Access
    A new methodology for SoC-level logic-IP-internal EM verification is presented, which provides an on-the-fly retargeting capability for reliability constraints. This flexibility is available at the design verification ...
  • A Structural encoding technique for the synthesis of asynchronous circuits 

    Carmona Vargas, Josep; Cortadella Fortuny, Jordi; Pastor Llorens, Enric (2000-12)
    External research report
    Open Access
    This paper presents a method for the automatic synthesis of asynchronous circuits from Petri net specifications. The method is based on a structural encoding of the system in such a way that a circuit implementation is ...
  • Asynchronous interface specification, analysis and synthesis 

    Kishinewsky, M; Cortadella Fortuny, Jordi; Kondratyev, A; Lavagno, L (1998-03)
    External research report
    Open Access
    Interfaces, by nature, are often asynchronous since they serve for connecting multiple distributed modules/agents without common clock. However, recent development in theory of asynchronous design in the area of ...
  • Boolean decomposition for AIG optimization 

    Machado, Lucas; Cortadella Fortuny, Jordi (Association for Computing Machinery (ACM), 2017)
    Conference report
    Open Access
    Restructuring techniques for And-Inverter Graphs (AIG), such as rewriting and refactoring, are powerful, scalable and fast, achieving highly optimized AIGs after few iterations. However, these techniques are biased by the ...
  • Discovering duplicate tasks in transition systems for the simplification of process models 

    San Pedro Martín, Javier de; Cortadella Fortuny, Jordi (Springer, 2016)
    Conference report
    Open Access
    This work presents a set of methods to improve the understandability of process models. Traditionally, simplification methods trade off quality metrics, such as fitness or precision. Conversely, the methods proposed in ...
  • Divide-and-conquer strategies for process mining 

    Carmona Vargas, Josep; Cortadella Fortuny, Jordi; Kishinevsky, Mike (2009-03)
    External research report
    Open Access
    The main goal of Process Mining is to extract process models from logs of a system. Among the possible models to represent a process, Petri nets is an ideal candidate due to its graphical representation, clear semantics ...
  • Hardware primitives for the synthesis of multithreaded elastic systems 

    Dimitrakopoulos, George N.; Seitanidis, I.; Psarras, A.; Tsiouris, K.; Mattheakis, Pavlos M.; Cortadella Fortuny, Jordi (European Interactive Digital Advertising Alliance (EDAA), 2014)
    Conference report
    Open Access
    Elastic systems operate in a dataflow-like mode using a distributed scalable control and tolerating variable-latency computations. At the same time, multithreading increases the utilization of processing units and hides ...
  • Increasing the robustness of digital circuits with ring oscillator clocks 

    Machado, Lucas; Roca Pérez, Antoni; Cortadella Fortuny, Jordi (2017)
    Conference report
    Open Access
    Technology scaling enables lower supply voltages, but also increases power density of integrated circuits. In this context, power integrity becomes a major concern in the implementation of highperformance designs. This ...
  • Jutge.org: characteristics and experiences 

    Petit Silvestre, Jordi; Roura Ferret, Salvador; Carmona Vargas, Josep; Cortadella Fortuny, Jordi; Duch Brown, Amalia; Giménez, Omer; Mani, Anaga; Mas Rovira, Jan; Rodríguez Carbonell, Enric; Rubio Gimeno, Alberto; San Pedro Martín, Javier de; Venkataramani, Divya (2017-07-04)
    Article
    Open Access
    Jutge.org is an open educational online programming judge designed for students and instructors, featuring a repository of problems that is well organized by courses, topics and difficulty. Internally, Jutge.org uses a ...
  • Keeping control transfer instructions out of the pipeline in architectures without condition codes 

    Cortadella Fortuny, Jordi; Llaberia Griñó, José M.; González Colás, Antonio María (1987-05)
    External research report
    Open Access
    The execution of branch instructions involves a loss of performance in pipelined processors. In this paper we present a mechanism for executing this kind of instruction with a zero delay. This mechanism has been proposed ...
  • Log-based simplification of process models 

    San Pedro Martín, Javier de; Carmona Vargas, Josep; Cortadella Fortuny, Jordi (Springer, 2015)
    Conference report
    Open Access
    The visualization of models is essential for user-friendly human-machine interactions during Process Mining. A simple graphical representation contributes to give intuitive information about the behavior of a system. ...
  • Logic decomposition of incompletely specified functions 

    Cortadella Fortuny, Jordi (2001-06)
    External research report
    Open Access
    The logic decomposition of incompletely specified functions (ISFs) is studied. A theoretical support based on ternary algebras is provided. This support aims at the logic decomposition of ISFs. A partial order is defined ...
  • Measuring the tolerance of self-adaptive clocks to supply voltage noise 

    Pérez Puigdemont, Jordi; Moll Echeto, Francisco de Borja; Cortadella Fortuny, Jordi (2011)
    Conference report
    Open Access
    Simultaneous switching noise has become an important issue due to its signal integrity and timing implications. Therefore a lot of time and resources are spent during the PDN design to minimize the supply voltage variation. ...