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====== GPU Architecture ======

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===== Topic =====

本團隊目前的研究主題如下：

==== Unified Shader GPU Architecture based on HSA ====

隨著GPU技術的進步與繪圖效能的提升，視覺運算領域正快速的發展。使用GPU來做大量平行處理的通用運算GPU(GPGPU - General Purpose GPU)，以及整合CPU與GPU的異質性系統，不但大幅提升了運算效能，更是研究的趨勢之一。[[http://www.hsafoundation.com/|HSA Foundation]]所提出的Heterogeneous System Architecture，便希望整合CPU與GPU的架構，進一步提升整個系統運算的效能。
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<imgcaption image1|HSA>{{ :group:HSA_lab.png?250}}</imgcaption>
=== Heterogeneous System Architecture ===
  - **HSA Immediate Language** \\ HSA introduced a low-level intermediate language, which is portable across multiple platforms.
  - **Hetergeneous Uniform Memory Access (hUMA)** \\ Unified Memory Address Space reduces memory bandwidth between CPU and GPU to improve performance.
  - **Hetergeneous Queuing (hQ)** \\ GPU and CPU have equal flexibility to create and dispatch work items which reduces dispatch latency to GPU.

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===== Result =====
<imgcaption image2|GPU Simulator>{{ :group:HSA_Sim_lab.png?250}}</imgcaption>
為了研究並且模擬異質系統架構的運算，我們實作了一個基於異質系統架構(HSA)的GPU模擬器。此模擬器包含：
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  - **Custom GPU ISA** \\ Which is based on the HSAIL BRIG and Nvidia PTX Virtual ISA
  - **HSAIL to HSA Binary Translator**
  - **GPU Simulator**

A fundamental GPU Simulator based on our Custom GPU ISA which includes fixed-size register file, warp scheduler, dispatch unit and SIMD execution units for parallel computing. The Simulator also supports 80 of 110 (73%) instructions, and solution to the divergent control flow and synchronization.

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===== Member =====
==== Current Member ====

^ R.A.        | [[:en:member:elvis|Liou Jhe-Yu]] |
^ 碩士班三年級    | 楊凱翔 |
^ 碩士班二年級    | 陳恆懌 • 黃昀棨|
^ 碩士班一年級    | 謝宛珊 • 許冠傑|
^ 大學部    ||
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===== Project =====

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===== Links =====
  - [[http://www.hsafoundation.com/|HSA Foundation]]


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