ARM big.LITTLE: The trouble with heterogeneous multi-processing: when 4 are better than 8 (or when 8 is not always the “lucky” number)

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What is big.LITTLE? ARM’s big.LITTLE arch made big waves on launch way back in 2011; it was heralded as a great way to combine performance with power: a “big” (computationally powerful but power hungry) core was to be coupled with a “LITTLE” (slow but low-power) core – and switched as … Read more…

Mali T760 GPGPU (Exynos 5433 SoC): FP64 Champion – Adreno Killer?

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What is Mali? What is Exynos? “Mali” is the name of ARM’s own “standard” GPU cores that complement the standard CPU cores (Cortex). Many ARM CPU licensors integrate GPU cores from other vendors in their SoCs, e.g. Imagination, Vivante, Adreno rather than the default Mali. Mali Series 700 is the … Read more…

Exynos 5433 64-bit Cortex A57/A53: Krait Killer?

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What is Exynos? “Exynos” is the family of mobile SoCs from Samsung; the CPU cores in the modern versions are Qualcomm’s own “Krait” (though some are standard ARM Cortex cores) while the (GP)GPU core is Qualcomm’s own “Adreno” – unlike competing ARM SoCs which generally contain standard ARM CPU and … Read more…