BPI-M3 compile Opencv 3.1.0 source code


(Oguzhan Baser) #21

@sinovoip I cannot test it because I don’ t have a download link. I m waiting Google Drive link.

@zhiqing_yu I tried rasbian image opencv succesfully installed just. But opencl device cannot find. I am trying to use optical flow lukas kanade algorithm. But banana pi is working 1 or 2 fps.


(Zhiqing Yu) #22

bpi m3 use Allwinner A83t SGX544 MP2 have 44.8 gflops

,opencl need trenclate cpu ram gpu ,at the time opencl have much eer .i sugest you use cpu only down pix up fps


#23

This is not true. A31/A31s used SGX544MP2, A83T contains only SGX544MP1 (half that fast) and you can’t use OpenCL ‘out of the box’ anyway. Just read through the forums of responsible vendors that used these GPUs in their SoCs to get the idea (TI or NXP for example).

Everthing that’s written in datasheets or marketing material regarding BPi M3 is either irrelevant or wrong :slight_smile:


(Zhiqing Yu) #24

http://bbs.meizu.cn/thread-5868029-1-1.html


#25

So you believe every BS you find somewhere on the web? GPU is wrong there, MHz are wrong, GFLOPS are wrong.

Look into the datasheet http://linux-sunxi.org/A83T#Documentation and look for Antutu 3D scores of A83T equipped devices. GPU clockspeed will be reduced brutally since A83T is always overheating:

Did you ever tried this out? Just do some GPU intensive stuff and watch dmesg output: GPU clock will be reduced even with mild workloads.


(Zhiqing Yu) #26

you r right.i make mistake


#27

No problem. I make mistakes all day long :slight_smile:

But that’s the problem with Banana Pi M3. A beefy product when looking at specs. But can you run it with all CPU cores busy at top speed? No. Does it matter whether GPU clock speed is specified above 600 MHz? No since everytime you would need the performance CPU cores get killed and/or throttle down and the same applies to the GPU (since it’s just one core with 4 shaders here only throttling applies since you can’t kill the only core).

The whole board is a design flaw. A HUGE heatsink is the most basic requirement for A83T! But since they do not test their stuff under normal conditions they do not even know (or did you ever see a single picture of any BPi M3 made by @sinovoip where A83T has a heatsink? They simply don’t care at all about performance)


(Vlad) #29

How to install opencv version 3 on the python3. This manual install opencv only with python2.7(


(Gabriel Alves Gwrt) #30

Can you give me the link for the image of this OS?