take rk3399 as an android device

[Ziv-Huang]

Hi all,

I want to run the caffe-classification in firefly rk3399, so i take it as an android device
and connect to a host machine via ADB. It can work on cpu mode, but i have no idea about how to work on gpu.

have any suggestion ?
thanks.

[Chunosov]

You have to install one gpu-aware packages using android target flag, e.g.:

ck install package:lib-caffe-bvlc-opencl-clblast-universal --target_os=android23-arm-v7a

Then rebuild classification program against this package and using the same target flag, and then run it with the same flag.

Honestly I'm not pretty sure which flag should be used for firefly. You can list all available android targets via command

ck ls os:android*

[Ziv-Huang]

@Chunosov thanks for your reply !!

when i try to this command :
"ck install package:lib-caffe-bvlc-opencl-clblast-universal --target_os=android23-arm-v7a"

it can't find file to patch:
Patching source directory ...
/home/alvin/CK/ck-env/package/lib-protobuf-3.2.0-android/patch.android/patch
can't find file to patch at input line 4
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:

|diff -ruN protobuf-3.2.0\cmake\install.cmake protobuf-3.2.0-new\cmake\install.cmake
|--- protobuf-3.2.0\cmake\install.cmake Fri Jan 27 23:03:40 2017
|+++ protobuf-3.2.0-new\cmake\install.cmake Wed May 10 10:07:15 2017

However, i find the patch exists in the path.
why ????

[gfursin]

Ups, that's my fault, @Ziv-Huang . I added ProtoBuf 3.2.0+ packages for Android recently and tested them on Windows (cross-compiling for Android). Unfortunately, patches prepared on Windows are incompatible with Linux (opposite is ok), so I updated them right now and committed. You should now be able to build them. Can you please do the following:

$ ck pull all
$ ck install package:lib-protobuf-3.2.0-android --target_os=android23-arm-v7a

and then restart Caffe build, please?
Thanks!

[gfursin]

The idea behind CK is to let the community use shared workflows and collaboratively fix encountered portability issues in shared packages across different platforms (like in your case), so thanks for your feedback!

[Ziv-Huang]

@gfursin thanks,

it also can't find file to patch

$ ck install package:lib-protobuf-3.2.0-android --target_os=android23-arm-v7a

Patching source directory ...
/home/alvin/CK/ck-env/package/lib-protobuf-3.2.0-android/patch.android/patch
patching file cmake/install.cmake
patching file cmake/libprotoc.cmake
patching file cmake/protoc.cmake
/home/alvin/CK/ck-env/package/lib-protobuf-3.2.0-android/patch.android/patch.orig
can't find file to patch at input line 4
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:

|diff -ruN protobuf-3.2.0\cmake\install.cmake protobuf-3.2.0-new\cmake\install.cmake
|--- protobuf-3.2.0\cmake\install.cmake Fri Jan 27 23:03:40 2017
|+++ protobuf-3.2.0-new\cmake\install.cmake Wed May 10 10:07:15 2017

File to patch:

[gfursin]

I think you have an old or polluted repository. I don't see patch.orig in the master GitHub branch:

• https://github.com/ctuning/ck-env/tree/master/package/lib-protobuf-3.2.0-android/patch.android
  You can clean up this repository as follows:

$ ck renew repo:ck-env

It will remove your current ck-env repo and will install a clean one - this should fix your problem ...

[Ziv-Huang]

@Chunosov @gfursin it works, thanks.

I have a question about caffe-classification and caffe-classification-opencl,

when i use caffe-classification-opencl, it shows the mode is gpu,
so the caffe-classification is only cpu mode?

therefore, i try this
"$ ck compile program:caffe-classification-opencl --speed --target_os=android21-arm"
"$ ck run program:caffe-classification-opencl --target_os=android21-arm"

because i want to run the classification on the gpu of rk3399,
but it shows that

executing code ...
WARNING: linker: Warning: unable to normalize ""
CANNOT LINK EXECUTABLE "./classification": library "libOpenCL.so" not found
Aborted

but i find the libOpenCL.so in the env/xxxxxxxxxxxxxx, how can i do to link it?

[gfursin]

Yes, that's right. caffe-classification is only for CPU mode ...

As for libOpenCL.so not found, note that libOpenCL.so on your host is a stub, i.e. it is used just to link an interface to the caffe-classification client, while the library itself is provided by a vendor and will be linked dynamically from your RK3399. This error means that libOpenCL.so is not in a standard path on your RK3399 - you need to find where it is on your device and provide us a path - if it's indeed non standard - we can add a support for it in the CK ...

You can also test the following command:

$ ck detect platform.gpgpu --opencl --target_os=android21-arm

@Chunosov, @psyhtest - can you please tell us where is libOpenCL.so on our RK3399? Thanks!

[Chunosov]

I can only find it in various opencl-1.2-stubs directories inside of CK-TOOLS...

[gfursin]

@Chunosov - I speak about remove device (accessed via adb), not the host! You will not find vendor OpenCL libraries for Android on the host machine ...