Browsing by Author "Karakostas, Vasileios"

Now showing items 1-5 of 5

    • 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)
      Conference report
      Restricted access - publisher's policy
      Prior 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 ...

    • Exploiting page table locality for Agile TLB Prefetching 

      Vavouliotis, Georgios; Alvarez Martí, Lluc; Karakostas, Vasileios; Nikas, Konstantinos; Koziris, Nectarios; Jiménez, Daniel A.; Casas Guix, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      Frequent Translation Lookaside Buffer (TLB) misses incur high performance and energy costs due to page walks required for fetching the corresponding address translations. Prefetching page table entries (PTEs) ahead of ...

    • Improving the energy efficiency of hardware-assisted watchpoint systems 

      Karakostas, Vasileios; Tomić, Saša; Unsal, Osman Sabri; Nemirovsky, Mario; Cristal Kestelman, Adrián (2013)
      Conference report
      Restricted access - publisher's policy
      Hardware-assisted watchpoint systems enhance the execution of numerous dynamic software techniques, such as memory protection, module isolation, deterministic execution, and data race detection. In this paper, we show ...

    • Improving the performance and energy-efficiency of virtual memory 

      Karakostas, Vasileios (Universitat Politècnica de Catalunya, 2016-04-18)
      Doctoral thesis
      Open Access
      Virtual memory improves programmer productivity, enhances process security, and increases memory utilization. However, virtual memory requires an address translation from the virtual to the physical address space on every ...

    • NEMsCAM: A novel CAM cell based on nano-electro-mechanical switch and CMOS for energy efficient TLBs 

      Seyedi, Azam; Karakostas, Vasileios; Cosemans, Stefan; Cristal Kestelman, Adrián; Nemirovsky, Mario; Unsal, Osman (Institute of Electrical and Electronics Engineers (IEEE), 2015-07-10)
      Conference report
      Open Access
      In this paper we propose a novel Content Addressable Memory (CAM) cell, NEMsCAM, based on both Nano-electro-mechanical (NEM) switches and CMOS technologies. The memory component of the proposed CAM cell is designed with ...