嵌入式多媒体应用程序的16位浮点指令

Seventh International Workshop on Computer Architecture for Machine Perception (CAMP'05) Pub Date : 2005-07-04 DOI:10.1109/CAMP.2005.1

L. Lacassagne, D. Etiemble, S. A. O. Kablia

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引用次数: 15

摘要

我们在Pentium4和PowerPC G4和G5上模拟了16位浮点指令的实现，以评估这些指令在嵌入式处理器中对图形和多媒体应用程序的性能影响。同时考虑了计算精度和执行时间。对于低端嵌入式处理器，在内存占用相同的情况下，16位FP指令提供比16位整数更大的动态范围。对于高端嵌入式处理器，我们添加了来自更广泛的SIMD指令的速度提升。

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16-bit floating point instructions for embedded multimedia applications

We have simulated the implementation of 16-bit floating point instructions on a Pentium4 and PowerPC G4 and G5 to evaluate the performance impact of these instructions in embedded processors for graphics and multimedia applications. Both accuracy of the computations and the execution time have been considered. For low-end embedded processors, the 16-bit FP instructions deliver a larger dynamic range than 16-bit integer with the same memory footprint. For high-end embedded processors, we add the speed up coming from wider SIMD instructions.

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Seventh International Workshop on Computer Architecture for Machine Perception (CAMP'05)

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