buzzword
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
|
buzzword [2015/02/18 19:22] rachata |
buzzword [2015/02/20 19:25] rachata |
||
|---|---|---|---|
| Line 561: | Line 561: | ||
| * Stride is one in MMX | * Stride is one in MMX | ||
| * Intel SSE --> Modern version of MMX | * Intel SSE --> Modern version of MMX | ||
| + | |||
| + | ===== Lecture 15 (2/20 Fri.) ===== | ||
| + | * GPU | ||
| + | * Warp/Wavefront | ||
| + | * A bunch of threads sharing the same PC | ||
| + | * SIMT | ||
| + | * Lanes | ||
| + | * FGMT + massively parallel | ||
| + | * Tolerate long latency | ||
| + | * Warp based SIMD vs. traditional SIMD | ||
| + | * SPMD (Programming model) | ||
| + | * Single program operates on multiple data | ||
| + | * can have synchronization point | ||
| + | * Many scientific applications are programmed in this manner | ||
| + | * Control flow problem (branch divergence) | ||
| + | * Masking (in a branch, mask threads that should not execute that path) | ||
| + | * Lower SIMD efficiency | ||
| + | * What if you have layers of branches? | ||
| + | * Dynamic wrap formation | ||
| + | * Combining threads from different warps to increase SIMD utilization | ||
| + | * This can cause memory divergence | ||
| + | * VLIW | ||
| + | * Wide fetch | ||
| + | * IA-64 | ||
| + | * Tradeoffs | ||
| + | * Simple hardware (no dynamic scheduling, no dependency checking within VLIW) | ||
| + | * A lot of loads at the compiler level | ||
| + | * Decoupled access/execute | ||
| + | * Limited form of OoO | ||
| + | * Tradeoffs | ||
| + | * How to street the instruction (determine dependency/stalling)? | ||
| + | * Instruction scheduling techniques (static vs. dynamic) | ||
| + | * Systoric arrays | ||
| + | * Processing elements transform data in chains | ||
| + | * Develop for image processing (for example, convolution) | ||
| + | * Stage processing | ||
| + | | ||
| + | |||
buzzword.txt · Last modified: 2015/04/27 18:20 by rachata
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 3.0 Unported
