## Posts

May, 24

### Accelerating Discrete Wavelet Transforms on GPUs

The two-dimensional discrete wavelet transform has a huge number of applications in image-processing techniques. Until now, several papers compared the performance of such transform on graphics processing units (GPUs). However, all of them only dealt with lifting and convolution computation schemes. In this paper, we show that corresponding horizontal and vertical lifting parts of the […]

May, 24

### Implementing Efficient, Portable Computations for Machine Learning

Computers are powerful tools which perform fast, accurate calculations over huge sets of data. However, many layers of abstraction are required to use computers for any given task. Recent advances in machine learning employ compute-intensive operations embedded in complex overall flows. Further, deployment of these systems must balance many concerns: accuracy, speed, energy, portability, and […]

May, 24

### Parallel and in-process compilation of individuals for genetic programming on GPU

Three approaches to implement genetic programming on GPU hardware are compilation, interpretation and direct generation of machine code. The compiled approach is known to have a prohibitive overhead compared to other two. This paper investigates methods to accelerate compilation of individuals for genetic programming on GPU hardware. We apply in-process compilation to minimize the compilation […]

May, 24

### Intel Xeon Phi acceleration of Hybrid Total FETI solver

This paper describes an approach for acceleration of the Hybrid Total FETI (HTFETI) domain decomposition method using the Intel Xeon Phi coprocessors. The HTFETI method is a memory bound algorithm which uses sparse linear BLAS operations with irregular memory access pattern. The presented local Schur complement (LSC) method has regular memory access pattern, that allows […]

May, 24

### Espresso: Efficient Forward Propagation for BCNNs

There are many applications scenarios for which the computational performance and memory footprint of the prediction phase of Deep Neural Networks (DNNs) needs to be optimized. Binary Neural Networks (BDNNs) have been shown to be an effective way of achieving this objective. In this paper, we show how Convolutional Neural Networks (CNNs) can be implemented […]

May, 22

### GPU System Call

GPUs are becoming first-class compute citizens and are being tasked to perform increasingly complex work. Modern GPUs increasingly support programmability-enhancing features such as shared virtual memory and hardware cache coherence, enabling them to run a wider variety of programs. But a key aspect of general-purpose programming where GPUs are still found lacking is the ability […]

May, 22

### GPUMap: A Transparently GPU-Accelerated Map Function

As GPGPU computing becomes more popular, it will be used to tackle a wider range of problems. However, due to the current state of GPGPU programming, programmers are typically required to be familiar with the architecture of the GPU in order to effectively program it. Fortunately, there are software packages that attempt to simplify GPGPU […]

May, 22

### MEDINA: MECCA Development in Accelerators – KPP Fortran to CUDA source-to-source Preprocessor

The global climate model ECHAM/MESSy Atmospheric Chemistry (EMAC) is a modular global model that simulates climate change and air quality scenarios. The application includes different sub-models for the calculation of chemical species concentrations, their interaction with land and sea, and the human interaction. The paper presents a source-to-source parser that enables support for Graphics Processing […]

May, 22

### Inferring the Scheduling Policies of an Embedded CUDA GPU

Embedded systems augmented with graphics processing units (GPUs) are seeing increased use in safety-critical real-time systems such as autonomous vehicles. Due to monetary cost requirements along with size, weight, and power (SWaP) constraints, embedded GPUs are often computationally impoverished compared to those used in non-embedded systems. In order to maximize performance on these impoverished GPUs, […]

May, 22

### Design of Hardware Accelerator for Lempel-Ziv 4 (LZ4) Compression

Hardware accelerators are being considered as important architectural components in the context of datacenter customization to achieve high performance and low power. Compression has played an important role in computer systems by enhancing storage and communication efficiency in the charge of extra computational cost. In this letter, we present a fully pipelined compression accelerator for […]

May, 18

### CLBlast: A Tuned OpenCL BLAS Library

This work demonstrates how to accelerate dense linear algebra computations using CLBlast, an open-source OpenCL BLAS library providing optimized routines for a wide variety of devices. It is targeted at machine learning and HPC applications and thus provides a fast matrix-multiplication routine (GEMM) to accelerate the core of many applications (e.g. deep learning, iterative solvers, […]

May, 18

### Fast GPU-Based Seismogram Simulation from Microseismic Events in Marine Environments Using Heterogeneous Velocity Models

A novel approach is presented for fast generation of synthetic seismograms due to microseismic events, using heterogeneous marine velocity models. The partial differential equations (PDEs) for the 3D elastic wave equation have been numerically solved using the Fourier domain pseudo-spectral method which is parallelizable on the graphics processing unit (GPU) cards, thus making it faster […]