Is Intel within ARM’s reach? Pedestrian Detection shows the way
1–10 of 38 posts
Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#2So code fully optimized for ARM/Cortex-A15 is almost as fast as only partially optimized code on a 1.2 GHz i3? Well, good to know I guess.
Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#3Spoiler: no. 1265 ms vs 439 ms on their OpenCV benchmark.
(Then they play some what-if games by underlocking the i3 in imaginative ways and applying SIMD opts to only the ARM side)
Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#4I am getting tired of this whole dumb x86 vs. arm comparison bullshit. You cannot compare chips (read: chips not even talking about architecture here because it's not relevant) which are designed for complete different purposes (high performance big ooo workstation cpu vs. low power mobile chip). Please stop making those.
Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#5In addition to what zurn said, they also don't specify the exact Core i3 model number (it could be an older generation), the RAM speed, and if the data set fits in cache.
If RAM access is needed ARM machines usually fall behind quickly, since they usually have much lower RAM bandwidth.
Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#6Spoiler: no. 1265 ms vs 439 ms on their OpenCV benchmark. (Then they play some what-if games by underlocking the i3 in imaginative ways and applying SIMD opts to only the ARM side)
but also, maybe? http://liliputing.com/2013/07/intel-atom-z3770-bay-trail-chi...
There's some evidence that the new Bay Trail Atom's should be pretty competitive against current ARM stuff.
Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#7In addition to what zurn said, they also don't specify the exact Core i3 model number (it could be an older generation), the RAM speed, and if the data set fits in cache. If RAM access is needed ARM machines usually fall behind quickly, since they usually have much lower RAM bandwidth.
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Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#8Spoiler: no. 1265 ms vs 439 ms on their OpenCV benchmark. (Then they play some what-if games by underlocking the i3 in imaginative ways and applying SIMD opts to only the ARM side)
Very primitive benchmark, not measuring power consumption in comparison between desktop i3 and ARM when the target is embedded use!
It would be informative having the power used to process the same tasks compared.
So what was the power consumption in every reported run? What was when the i3 was underclocked?
Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#9I am getting tired of this whole dumb x86 vs. arm comparison bullshit. You cannot compare chips (read: chips not even talking about architecture here because it's not relevant) which are designed for complete different purposes (high performance big ooo workstation cpu vs. low power mobile chip). Please stop making those.
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Re: Is Intel within ARM’s reach? Pedestrian Detection shows the way
#10So code fully optimized for ARM/Cortex-A15 is almost as fast as only partially optimized code on a 1.2 GHz i3? Well, good to know I guess.
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