It hasn't been much of a secret in the SoC space that big.LITTLE on the original Exynos 5 Octa (5410) didn't end up working in the most optimal fashion. Instead of using core migration or the Heterogeneous Multi-Processing (HMP) big.LITTLE models, the 5410 instead used cluster migration which meant either all 4 ARM Cortex A15s or 4 ARM Cortex A7s were lit up. For those not familiar, there are three big.LITTLE models, core switching, in which any of the A7 and A15 cores can be swapped, cluster switching, in which either all A7s or all A15s can be swapped, or HMP, where the kernel is aware of all cores and can schedule threads to any of the cores all at once. This final model is...
In the first part of our series on ARM, we mentioned that with every major microprocess design ARM tries to choose 3 licensees to get early access to technology...43 by Anand Lal Shimpi & Brian Klug on 7/22/2013
ARM was being unusually coy when talking about the GPU IP used in Samsung's recently announced Exynos 5 Octa. We eventually found out why: unlike the Exynos 5 Dual...25 by Anand Lal Shimpi on 3/12/2013
At CES this year Samsung introduced the oddly named Exynos 5 Octa SoC, one of the first Cortex A15 SoCs to implement ARM's big.LITTLE architecture. Widely expected to be...52 by Anand Lal Shimpi on 2/20/2013
At CES, Samsung announced its Exynos 5 Octa SoC featuring four ARM Cortex A7s and four ARM Cortex A15s. Unusually absent from the announcement was any mention of the...43 by Anand Lal Shimpi & Brian Klug on 1/13/2013
Earlier this morning Samsung announced a new eight core SoC and the spiritual successor to the Exynos 5250 "Exynos 5 Dual" called the Exynos 5 Octa (Exynos 5410?). This...17 by Brian Klug on 1/9/2013