Linaro improvements to Android 4.0.4 performance on the Pandaboard TI OMAP4430 platform

Bernhard Rosenkränzer who is the Android Toolchain expert at Linaro shows how Linaro's version of Android 4.0.4 runs about twice as fast as stock Android 4.0.4 on the TI OMAP4430 Powered Pandaboard. You can also watch this interview filmed earlier this week with Bernhard Rosenkränzer talking about what he does at Linaro: http://www.youtube.com/watch?v=9q-uqG...

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  Science & Technology

[cooldevansh1]

I make ROMS for my Allwinner A10 device using dsixda's kitchen !

I have no idea of a toolchain and all that stuff !

Do you have any roms made for these allwinner a10 tabs ?

Or Can u tell me what can i do to port these great tweaks on my tab ?

Thanks in Advance !

[Charbax]

You can watch my interview with the Allwinner engineers at the Linaro Connect, you can try to find them online and contact them to ask if they have some of the Linaro software advances integrated for the Allwinner A10 platform yet.

[Alberto Panizzo]

Amazing how this Jesus man compare the results of an OpenGL test which is _GPU intensive_ telling that his toolchain has doubled the execution speed!

3D rendering is done by the GPU and maybe he is using two different kernels with two different clock speeds of the GPU.

I want to see top running on those boards, and if it is as I expect, it will tell that the CPU load is around 10~20% in both.. so the toolchain room cannot ever allow a doubling of speed!

[Charbax]

You can also do 3D on the CPU, which is what this benchmark does, look it up. The GPU is not used for that benchmark. Linaro can't improve the SGX540 GPU of OMAP4 because it's closed source.

[Amit Mittal]

looks like linaro is gone. Google have already done it in Jelly beans.

[Charbax]

Jelly Bean with Linaro is even faster, just wait for it to be demonstrated. Google does use something from Linaro in 4.1.1 but not yet all of it. To be continued.

[linaresx]

Just want to hear this guy say EXTERMINAAATE!!

[Charbax]

Better code = better battery. When the code runs faster, devices can clock down the ARM processor sooner and have more battery runtime.

[Achwaq Khalid]

@John Johnson well i mentioned the gcc 4.7! now i think they should consider the 4.8 since it's already available, code optimized = runs faster = saves battery life, this is the goal.

[John Johnson]

I didn't realize google doesn't use gcc-based toolchain; good point, especially with the support from chip-makers like ARM, gcc should be the standard.

[John Johnson]

I think he Does mention that some of the optimization flags thrown at the compiler enabled the "strict...aliasing", among other things; and, yea, GPU closed-source as already mentioned

[Achwaq Khalid]

All these speed improvements were achievable bu using the GCC 4.7 toolchain, i hope that Google will move to it with the upcoming Android 5.0 Key Lime Pie or what ever they might call at the time of release, this will give users the performance of superphones in their low end devices (not in every cases though).

[Colesykins]

HES BACK

[ninehoursful]

how can I customize android rom? I know C++ and Java both and what to customize Android Rom.

[Nite Achilles]

What about Gingerbread?

[foxracinginc85]

i'm so glad there's still people like you guys out there, actually paying attention to optimizing code... couldn't stop smiling through the whole video. thank you so much :)

[cbr600rrgraffitti]

Ya you just got scienced! BY CHARBAX!!!