SoftSIMD - Exploiting Subword Parallelism Using Source Code Transformations

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Provided by: edaa
Topic: Hardware
Format: PDF
SIMD instructions are used to speed up multimedia applications in high performance embedded computing. Vendors often use proprietary platforms which are incompatible with others. Therefore, porting software is a very complex and time consuming task. Moreover, lots of existing embedded processors do not have SIMD extensions at all. But they do provide a wide data path which is 32-bit or wider. Usually, multimedia applications work on short data types of 8 or 16-bit. Thus, only the lower bits of the data path are used and therefore only a fraction of the available computing power is exploited for such algorithms.
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