Browsing by Author "Karakostas, Vasileios"
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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 policyPrior 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 AccessFrequent 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 policyHardware-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 AccessVirtual 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 AccessIn 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 ...