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This paper presents an extension to MPI supporting the one-sided communication model and window allocations in storage. Our design transparently integrates with the current MPI implementations, enabling applications to target MPI windows in storage, memory or both simultaneously, without major modifications. Initial performance results demonstrate that the presented MPI window extension could potentially...
Hardware accelerators have become a de-facto standard to achieve high performance on current supercomputers and there are indications that this trend will increase in the future. Modern accelerators feature high-bandwidth memory next to the computing cores. For example, the Intel Knights Landing (KNL) processor is equipped with 16 GB of high-bandwidth memory (HBM) that works together with conventional...
In this letter, HfO2-based ferroelectric random access memory (FeRAM) with metal–insulator–metal structure is studied for the first time under radiation conditions. Y-doped HfO2-based FeRAM devices show high immunity to 60Co $\gamma $ ray radiation. Basic FeRAM parameters, such as leakage current, permittivity, remanent polarization, endurance, and fatigue, show almost no degradation after $\gamma $ ...
Next-generation supercomputers will feature more hierarchical and heterogeneous memory systems with different memory technologies working side-by-side. A critical question is whether at large scale existing HPC applications and emerging data-analytics workloads will have performance improvement or degradation on these systems. We propose a systematic and fair methodology to identify the trend of application...
This paper presents a digital signal processor (DSP) based iterative orthogonal frequency division multiplexing (OFDM) receiver for time-varying underwater acoustic channels. The time-varying channel is modelled by basis expansion model (BEM). To explore the inherent sparsity of underwater acoustic channel, orthogonal matching pursuit (OMP) algorithm is adopted. A fast Fourier transform (FFT) based...
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