VESPA: VIPT Enhancements for Superpage Accesses

Design of the PowerPC 604e(tm) Microprocessor

The PowerPC 604e microprocessor is a lower power, higher performance extension of the PowerPC 604TM microprocessor. The 604e doubles the cache size and tunes the performance of memory accesses compared to the original 604. The 604e has also added hardware support for misaligned data accesses when using little-endian byte ordering. The branch processing microarchitecture of the 604e has been som...

A Comparison of Online Superpage Promotion Me hanisms

A Comparison of Online Superpage Promotion Mechanisms

The amount of data that a typical translation lookaside bu er (TLB) can map has not kept pace with the growth in cache sizes and application footprints. As a result, the cost of handling TLB misses limits the performance of an increasing number of applications. The use of superpages, multiple adjacent virtual memory pages that can be mapped with a single TLB entry, extends a TLB's reach without...

Acute Kidney Injury Following Rhabdomyolysis due to Multiple Wasp Stings (Vespa affinis)

Background: Wasp stings are quite commonly observed in Bangladesh though they are under reported. However, rhabdomyolysis following multiple wasp stings is a rare entity. Case report: A middle aged physician was stung by a swarm of wasps at multiple sites of the body. He felt severe pain at the sites of the stings and was primarily treated with intravenous hydrocortisone and chlorpheniramine. W...

Generation of the VESPA response to rapid contrast fluctuations is dominated by striate cortex: evidence from retinotopic mapping.

The VESPA (visual-evoked spread spectrum analysis) method derives an impulse response function of the visual system from scalp electroencephalographic (EEG) data using the controlled modulation of some feature of a visual stimulus. Recent research using VESPA responses to modulations of stimulus contrast has provided new insights into both early visual attention mechanisms and the specificity o...