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- Ricardo Quislant, Eladio GutiÃ©rrez, Oscar G. Plata, Emilio L. Zapata
- 2009 18th International Conference on Parallelâ€¦
- 2009

Writing multithreaded programs is a fairly complex task that poses a major obstacle to exploit multicore processors. Transactional Memory (TM) emerges as an alternative to the conventionalâ€¦ (More)

- Elisardo Antelo, Julio Villalba, Javier D. Bruguera, Emilio L. Zapata
- IEEE Trans. Computers
- 1997

CORDIC (Coordinate Rotation Digital Computer) is a well known hardware algorithm for computing various elementary functions. In this work two 32 bit radix 4 CORDIC architectures, unfolded and foldedâ€¦ (More)

- Francisco J. Jaime, Miguel A. Sanchez, Javier Hormigo, Julio Villalba, Emilio L. Zapata
- IEEE Transactions on Circuits and Systems Iâ€¦
- 2010

Coordinate Rotation DIgital Computer (CORDIC) rotator is a well known and widely used algorithm within computers due to its way of carrying out some calculations such as trigonometric functions,â€¦ (More)

- Manuel Ujaldon, Emilio L. Zapata, Barbara M. Chapman, Hans P. Zima
- IEEE Trans. Parallel Distrib. Syst.
- 1997

Vienna Fortran, High Performance Fortran (HPF), and other data parallel languages have been introduced to allow the programming of massively parallel distributed-memory machines (DMMP) at aâ€¦ (More)

- JoaquÃn Olivares, Javier Hormigo, Julio Villalba, JosÃ© Ignacio Benavides BenÃtez, Emilio L. Zapata
- Microprocessors and Microsystems
- 2006

Block-based motion estimation is one of the critical tasks in todayâ€™s video compression standards such as H.26x, MPEG-1, -2 and -4. Most of the block-based motion estimation algorithms are based onâ€¦ (More)

- NicolÃ¡s Guil Mata, Julio Villalba, Emilio L. Zapata
- IEEE Trans. Image Processing
- 1995

The authors describe a new algorithm for the fast Hough transform (FHT) that satisfactorily solves the problems other fast algorithms propose in the literature-erroneous solutions, point redundance,â€¦ (More)

- Basilio B. Fraguela, RamÃ³n Doallo, Emilio L. Zapata
- IEEE PACT
- 1999

Caches play a very important role in the performance of modern computer systems due to the gap between the memory and the processor speed. Among the methods for studying their behavior, the mostâ€¦ (More)

- Javier D. Bruguera, NicolÃ¡s Guil Mata, TomÃ¡s Lang, Julio Villalba, Emilio L. Zapata
- VLSI Signal Processing
- 1996

We present the design of parallel architectures for the computation of the Hough transform based on application-specific CORDIC processors. The design of the circular CORDIC in rotation mode isâ€¦ (More)

- Luis F. Romero, Emilio L. Zapata
- Parallel Computing
- 1995

Sparse matrix vector multiplication (SpMxV) is often one of the core components of many scientific applications. Many authors have proposed methods for its data distribution in distributed memoryâ€¦ (More)

High-level data-parallel languages such as Vienna Fortran and High Performance Fortran (HPF) have been introduced to allow the programming of massively parallel distributed-memory machines at aâ€¦ (More)