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Philip Brisk

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Publications associées (34)

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MPSoC Design using Application-Specific Architecturally Visible Communication

Edoardo Charbon, Paolo Ienne, Philip Brisk, Ties Jan Henderikus Kluter

This paper advocates the placement of Architecturally Visible Communication (AVC) buffers between adjacent cores in MPSoCs to provide high-throughput communication for streaming applications. Producer/consumer relationships map poorly onto cache-based MPSo ...

Springer-Verlag2009

Selective Flexibility: Creating Domain-Specific Reconfigurable Arrays

Paolo Ienne, Philip Brisk, Mirjana Stojilovic, David Novo Bruna

Historically, hardware acceleration technologies have either been application-specific, therefore lacking in flexibility, or fully programmable, thereby suffering from notable inefficiencies on an application-by-application basis. To address the growing ne ...

Institute of Electrical and Electronics Engineers2013

Virtual Ways: Low-Cost Coherence for Instruction Set Extensions with Architecturally Visible Storage

Edoardo Charbon, Paolo Ienne, Samuel Burri, Philip Brisk, Ties Jan Henderikus Kluter

Instruction set extensions (ISEs) improve the performance and energy consumption of application-specific processors. ISEs can use architecturally visible storage (AVS), localized compiler-controlled memories, to provide higher I/O bandwidth than reading da ...

Assoc Computing Machinery2014

An Optimal Linear-Time Algorithm for Interprocedural Register Allocation in High Level Synthesis Using SSA Form

Paolo Ienne, Philip Brisk, Ajay Kumar Verma

An optimal linear-time algorithm for interprocedural register allocation in high level synthesis is presented. Historically, register allocation has been modeled as a graph coloring problem, which is nondeterministic polynomial time-complete in general; ho ...

2010

Automatic Application of Power Analysis Countermeasures

Paolo Ienne, Philip Brisk, Francesco Regazzoni, David Novo Bruna, Ali Galip Bayrak

We introduce a compiler that automatically inserts software countermeasures to protect cryptographic algorithms against power-based side-channel attacks. The compiler first estimates which instruction instances leak the most information through side-channe ...

Institute of Electrical and Electronics Engineers2015

Data-flow transformations to maximize the use of carry-save representation in arithmetic circuits

Paolo Ienne, Philip Brisk, Ajay Kumar Verma

The increasing importance,of datapath circuits in complex systems-on-chip calls for special arithmetic optimizations. The goal is to automatically achieve the handcrafted results which escape classic logic optimizations. Some work has been done in the rece ...

2008

Arithmetic Optimization for Custom Instruction Set Synthesis

Paolo Ienne, Philip Brisk, Ajay Kumar Verma

One of the ways that custom instruction set extensions can improve over software execution is through the use of hardware structures that have been optimized at the arithmetic level. Arithmetic hardware, in many cases, can be partitioned into networks of f ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Optimistic chordal coloring: a coalescing heuristic for SSA form programs

Paolo Ienne, Philip Brisk, Ajay Kumar Verma

The interference graph for a procedure in Static Single Assignment (SSA) Form is chordal. Since the k-colorability problem can be solved in polynomial-time for chordal graphs, this result has generated interest in SSA-based heuristics for spilling and coal ...

Springer US2009

An Out-of-Order Load-Store Queue for Spatial Computing

Paolo Ienne, Philip Brisk, Lana Josipovic

The efficiency of spatial computing depends on the ability to achieve maximal parallelism. This necessitates memory interfaces that can correctly handle memory accesses that arrive in arbitrary order while still respecting data dependencies and ensuring ap ...

Assoc Computing Machinery2017

Memory Organization and Data Layout for Instruction Set Extensions with Architecturally Visible Storage

Yusuf Leblebici, Paolo Ienne, Philip Brisk, Panagiotis Athanasopoulos

Present application specific embedded systems tend to choose instruction set extensions (ISEs) based on limitations imposed by the available data bandwidth to custom functional units (CFUs). Adoption of the optimal ISE for an application would, in many cas ...

2009

Variable latency speculative addition: A new paradigm for arithmetic circuit design

Paolo Ienne, Philip Brisk, Ajay Kumar Verma

Adders are one of the key components in arithmetic circuits. Enhancing their performance can significantly improve the quality of arithmetic designs. This is the reason why the theoretical lower bounds on the delay and area of an adder have been analysed, ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

Architectural improvements for field programmable counter arrays: enabling efficient synthesis of fast compressor trees on FPGAs

Yusuf Leblebici, Paolo Ienne, Philip Brisk, Alessandro Cevrero, Ajay Kumar Verma, Hadi Parandeh Afshar, Panagiotis Athanasopoulos

The Field Programmable Counter Array (FPCA) was introduced to improve FPGA performance for arithmetic circuits. An FPCA is a reconfigurable IP core that can be integrated into an FPGA. To exploit the FPCA, a circuit is transformed by merging disparate addi ...

ACM2008

Way Stealing: A Unified Data Cache and Architecturally Visible Storage for Instruction Set Extensions

Edoardo Charbon, Paolo Ienne, Philip Brisk, Ties Jan Henderikus Kluter

Way Stealing is a simple architectural modification to a cache-based processor that increases the data bandwidth to and from application-specific instruction set extensions (ISEs), which increase performance and reduce energy consumption. Way Stealing offe ...

Institute of Electrical and Electronics Engineers2014

Challenges in Automatic Optimization of Arithmetic Circuits

Paolo Ienne, Philip Brisk, Ajay Kumar Verma

Despite the impressive progress of logic synthesis in the past decade, finding the best architecture for a given circuit still remains an open and largely unsolved problem, especially for arithmetic circuits. In many cases, the outcome of even the most adv ...

Ieee Computer Soc Press, Customer Service Center, Po Box 3014, 10662 Los Vaqueros Circle, Los Alamitos, Ca 90720-1264 Usa2009

Fast, quasi-optimal, and pipelined instruction-set extensions

Paolo Ienne, Philip Brisk, Ajay Kumar Verma

Nowadays many customised embedded processors offer the possibility of speeding up an application by implementing it using Application-Specific Functional units (AFUs). However, the AFUs must satisfy certain constraints in terms of read and write ports betw ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

Scalable and Low Cost Design Approach for Variable Block Size Motion Estimation (VBSME)

Paolo Ienne, Philip Brisk, Hadi Parandeh Afshar

Variable block size motion estimation (VBSME) in state-of-the-art video coding standards is one of the key features which improves the coding efficiency significantly compared to the previous standards. VBSME hardware design is a challenging task due to it ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Exploiting Fast Carry-Chains Of Fpgas For Designing Compressor Trees

Paolo Ienne, Philip Brisk, Hadi Parandeh Afshar

Fast carry chains featuring dedicated adder circuitry is a distinctive feature of modern FPGAs. The carry chains bypass the general routing network and are embedded in the logic blocks of FPGAs for fast addition. Conventional intuition is that such carry c ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Improving FPGA Performance for Carry-Save Arithmetic

Paolo Ienne, Philip Brisk, Hadi Parandeh Afshar, Ajay Kumar Verma

The selective use of carry-save arithmetic, where appropriate, can accelerate a variety of arithmetic-dominated circuits. Carry-save arithmetic occurs naturally in a variety of DSP applications, and further opportunities to exploit it can be exposed throug ...

2010

A Novel FPGA Logic Block for Improved Arithmetic Performance

Philip Brisk, Hadi Parandeh Afshar

To improve FPGA performance for arithmetic circuits, this paper proposes a new architecture for FPGA logic cells that includes a 6:2 compressor. The new cell features additional fast carry-chains that concatenate adjacent compressors and can be routed loca ...

Acm Order Department, P O Box 64145, Baltimore, Md 21264 Usa2008

Fast, Nearly Optimal ISE Identification with I/O Serialization through Maximal Clique Enumeration

Paolo Ienne, Philip Brisk, Ajay Kumar Verma

The last decade has witnessed the emergence of the application-specific instruction-set processor (ASIP) as a viable platform for embedded systems. Extensible ASIPs allow the user to augment a base processor with instruction set extensions (ISEs) that exec ...

2010