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Android example fails to load model
simonr_rob
Join Date: 9 Aug 12
Posts: 7
Posted: Tue, 2017-07-25 04:00
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I have followed the getting started instructions (https://developer.qualcomm.com/software/snapdragon-neural-processing-eng...) and I have sucessfuly built the Android app with Android Studio. However the app fails to load the model, examing the adb log the following is displayed:

07-25 11:21:48.529 15012-15012/com.qualcomm.qti.snpe.imageclassifiers E/linker: library "/vendor/lib/libOpenCL.so" ("/system/vendor/lib/libOpenCL.so") needed or dlopened by "/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/lib/arm/libSNPE.so" is not accessible for the namespace: [name="classloader-namespace", ld_library_paths="", default_library_paths="/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/lib/arm:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/base.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_dependencies_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_0_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_1_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_2_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_3_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_4_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclas
07-25 11:21:48.600 15012-15032/com.qualcomm.qti.snpe.imageclassifiers E/LoadNetworkTask: Unable to create network! Cause: error_code=809; error_message=OpenCL function has returned error. OpenCL Error (-59) CL_INVALID_OPERATION; error_component=GPU Runtime; line_no=121; thread_id=-847292128; opencl_error=-59
Java.lang.IllegalStateException: Unable to create network! Cause: error_code=809; error_message=OpenCL function has returned error. OpenCL Error (-59) CL_INVALID_OPERATION; error_component=GPU Runtime; line_no=121; thread_id=-847292128; opencl_error=-59

I am using an Inforce 6640 Single Board Computer running Android Nougat 7.1.1, I have also checked that LibOpenCL.so exists in /system/vendor/lib and it is present.

I am not sure how to proceed,  a google search comes up with https://developer.android.com/about/versions/nougat/android-7.0-changes.... NDK Apps Linking to Platform Libraries which is preventing it linking do a non NDK library. I have tried changing the target API to 23, but still get the same error.

Thanks,

Simon
 

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Re: Android example fails to load model
simonr_rob
Join Date: 9 Aug 12
Posts: 7
Posted: Tue, 2017-07-25 04:09
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I have also checked the Inforce source build and  libOpenCL.so is included in the public.libraries.txt (./vendor/qcom/proprietary/prebuilt/target/product/msm8996/system/vendor/etc/public.libraries.txt):

libOpenCL.so
libqti_performance.so
libqti-perfd-client.so
lib-ims-rcscmjni.so
lib-imsrcscm.so
lib-imsrcscmclient.so
lib-imsrcscmservice.so
libadsprpc.so
libsdsprpc.so
 

Thanks,

Simon

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Re: Android example fails to load model — Best Answer
simonr_rob
Join Date: 9 Aug 12
Posts: 7
Posted: Tue, 2017-07-25 04:31
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Seems to be a Inforce build problem as /libOpenCL.so is not be populated into /system/etc/public.libraries.txt, I have edited the file and in now loads the model.

I hope this helps anybody else with similar problems.

Simon

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Re: Android example fails to load model
moljaca moderator
Join Date: 25 Jul 17
Location: San Diego
Posts: 40
Posted: Tue, 2017-07-25 12:05
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Simon,

glad that you solved it. Thanks for posting the solution!

 Milan

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Re: Android example fails to load model
shiangyong
Join Date: 21 Sep 17
Posts: 15
Posted: Mon, 2017-10-02 16:19
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Hi Simon,

I'm also developing on Inforce 6640 Single Board Computer running Android Nougat 7.1.1 and it looks like I do not have permission to modify public.libraries.txt.

How did you change the permission on that file (or the whole directory)?

Thanks!

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Re: Android example fails to load model
shiangyong
Join Date: 21 Sep 17
Posts: 15
Posted: Fri, 2017-10-20 13:43
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I was able to push the edited public.lilbraries.txt by doing a remount on /system first. However I still see the same error.

From logcat

snpe.imageclassifiers E/linker: library "/vendor/lib/libOpenCL.so" ("/system/vendor/lib/libOpenCL.so") needed or dlopened by "/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/lib/arm/libSNPE.so" is not accessible for the namespace: [name="classloader-namespace", ld_library_paths="", default_library_paths="/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/lib/arm:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/base.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_dependencies_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_0_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_1_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_2_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_3_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclassifiers-1/split_lib_slice_4_apk.apk!/lib/armeabi-v7a:/data/app/com.qualcomm.qti.snpe.imageclas
 
Any ideas on what else could be causing the issue? I'm running the Android tutorial here https://developer.qualcomm.com/software/snapdragon-neural-processing-eng...
 
 
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Re: Android example fails to load model
simonr_rob
Join Date: 9 Aug 12
Posts: 7
Posted: Sat, 2017-10-21 06:37
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Hi shiangyong,

Here's what my public.libraries.txt  contains:

cat /system/etc/public.libraries.txt 

libandroid.so
libadsprpc.so
libc.so
libcamera2ndk.so
libdl.so
libEGL.so
libGLESv1_CM.so
libGLESv2.so
libGLESv3.so
libicui18n.so
libicuuc.so
libjnigraphics.so
liblog.so
libmediandk.so
libm.so
libOpenCL.so
libOpenMAXAL.so
libOpenSLES.so
libqti_performance.so
libRS.so
libstdc++.so
libvulkan.so
libwebviewchromium_plat_support.so
libz.so
 
Cheers,
 
Simon
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Re: Android example fails to load model
shiangyong
Join Date: 21 Sep 17
Posts: 15
Posted: Mon, 2017-10-23 13:14
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Thank you Simon, I am now able to use the GPU within the Android app. For the benefit of other readers, I also learned that it is necessary to reboot the device after updating public.libraries.txt

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Re: Android example fails to load model
ajay.joshy0
Join Date: 23 Jul 17
Posts: 1
Posted: Wed, 2018-11-21 23:40
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Thanks a lot Simon
faced the same problem 
adding libOpenCL.so  to    /system/etc/public.libraries.txt resolved it

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