Problems with using arm version on Android #363

kurak38 · 2014-04-22T10:14:48Z

Hi,
I am using Download openblas-0.2.9-rc2-armv6.tar.gz (8.1 MB) (http://sourceforge.net/projects/openblas/files/v0.2.9-rc2-arm/) and I have problem with undefined references to:
shmget, shmat, shmdt, shctl, get_nprocs, pthread_atfork, stderr and _gfortran_compare_string.
I am using APP_STL := gnustl_static with LDLIBS : libgnustl_static.a and libsupc++.a. GNU STL from android-ndk-r9d version 4.8 of gcc.
The most problematic, I think, would be function with shared memory, while on Android there is no such thing to use.
Please give me any advice
Thanks in advance
Adam

xianyi · 2014-04-22T11:46:56Z

Hi @kurak38 ,

Sorry, we didn't provide 0.2.9.rc2 version for Android so far.

Please try our old version.
http://sourceforge.net/projects/openblas/files/v0.2.8-arm/openblas-v0.2.8-android-rc1.tar.gz/download

It's armv5tel ( single thread and without lapack ).

Xianyi

kurak38 · 2014-04-22T12:13:18Z

hmm, but there is no lapacke.h and I need it

xianyi · 2014-04-22T12:17:36Z

@kurak38, Why do you need BLAS and LAPACK on Android?

xianyi · 2014-04-22T12:17:38Z

@kurak38, Why do you need BLAS and LAPACK on Android?

kurak38 · 2014-04-22T12:19:33Z

I'm porting some other library that requires both

xianyi · 2014-04-22T14:36:48Z

LAPACKE is a C wrapper for LAPACK, which also calls LAPACK fortran code. Thus, I thinks it need a Fortran compiler for Android.
I found a blog about Fortran on Android.
http://danilogiulianelli.blogspot.com/2013/02/how-to-build-gcc-fortran-cross-compiler.html

kurak38 · 2014-04-22T14:54:18Z

Is it possible that you send me your source code? (kurak38@gmail.com)

xianyi · 2014-04-24T10:23:16Z

@kurak38 , I think the source code is on github.com.

We didn't have other codes for ARM.

soumith · 2014-04-24T16:49:32Z

Interesting. i'd definitely want to cross-compile for android. We use it for running neural nets on Android.

kurak38 · 2014-04-24T18:11:34Z

I have managed to compile it by taking advantage of https://github.com/simonlynen/android_libs to build only lapack. Then add it to openBlas for android mention before and it worked.

soumith · 2014-04-30T15:50:54Z

@xianyi Are there instructions to compile the latest HEAD on android? or is it too complicated

soumith · 2014-04-30T18:06:53Z

@xianyi I ask, because I want to compile for android with multithreads, rather than just a single-threaded version

xianyi · 2014-05-02T09:53:02Z

In OpenBLAS/GotoBLAS, it used some System V IPC functions in multi-threading implementation, which is not supported in Android NDK.
Thus, we need to eliminate these IPC callings.

@wernsaar , any suggestions?

wernsaar · 2014-05-02T10:43:31Z

On 02.05.2014 11:53, Zhang Xianyi wrote:

In OpenBLAS/GotoBLAS, it used some System V IPC functions in multi-threading implementation, which is not supported in Android NDK.
Thus, we need to eliminate these IPC callings.

@wernsaar , any suggestions?

Reply to this email directly or view it on GitHub:
#363 (comment)
Hi,

Android does not support System V IPC in the kernel, but has a mechanism
called ashmem. First we need a configuration option like
TARGET_OS = OS_ANDROID, where OS_ANDROID is a subtype of
OS_LINUX. Then we can implement ashmem in memory.c and some other
files.

Best regards

Werner

sonicdebris · 2015-02-07T21:06:17Z

Hi, any news about android support? I'm trying to build 0.2.8 for armv7 (I downloaded the sources from the 0.2.8 tag at: https://github.com/xianyi/OpenBLAS/tree/v0.2.8 )

Now I'm struggling to put together an android makefile, and I was wondering if the one used to build the armv5 version is available somewhere. Thanks!

xianyi · 2015-02-10T17:12:57Z

@wernsaar , could you answer this question?

bhack · 2015-06-18T16:26:50Z

@xianyi We are interested in this at BVLC/caffe#2619. We are now relaying on eigen for this build but we want to recover openblas support.
/cc @sh1r0

ibrahima · 2015-06-20T02:29:52Z

I'm also interested in this. What is the intended result of a11555c ? Should it build and link correctly on Android?

xianyi · 2015-06-20T21:02:22Z

@ibrahima , so far, it can generate multi-threaded BLAS library by NDK cross compiler. However, I didn't test it on any Android phone. I think it should work.

ibrahima · 2015-06-21T00:26:51Z

Hmm, I was actually able to build libopenblas.so and run the tests from https://github.com/xianyi/OpenBLAS/wiki/User-Manual on my Nexus 5 but I had to fiddle a bit with different toolchains and flags. I think the current branch needs some more flags in Makefile.arm for Android to link properly. Also it's a bit tricky because I think some flags that I needed are due to Android 5.0/5.1 and may cause things to break on earlier versions.

Here's what I currently have in my Makefile.arm:

CCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard -march=armv7-a -mhard-float -D_NDK_MATH_NO_SOFTFP=1 -Wl,--no-warn-mismatch -lm_hard -Wl,--hash-style=sysv -fPIE -Wl,-fPIE

but some of those flags might not be necessary because I ran into a lot of errors trying to get things working. I ended up using some ndk10 version of gcc 4.8 I think (not sure because I tried a lot of different toolchains and have different things floating around). I think a recent version of the NDK is needed for hardfloat support.

All of the above is provided as reference for anyone else trying this out; if I can clean up my changes and document it correctly I will try and submit a pull request that makes this easier. My actual end goal is to run https://github.com/scalanlp/breeze on Android with native BLAS and I'm still struggling with getting openblas loaded via JNI but at least now I know that the shared library works from C code.

bhack · 2015-06-21T01:49:18Z

@ibrahima See also my comment at BVLC/caffe#2619 (comment)

xianyi · 2015-06-23T16:18:39Z

@ibrahima , Thank you for your work.

bhack · 2015-06-25T19:19:29Z

@xianyi I've tried with
make TARGET=ARMV7

but there is some missing define in gemv.c

-c -O2 -DMAX_STACK_ALLOC=2048 -Wall -DF_INTERFACE_GFORT -fPIC -DNO_LAPACK -DNO_LAPACKE -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER= -marm -mfpu=neon  -mfloat-abi=hard -march=armv7-a -DASMNAME=sgemv -DASMFNAME=sgemv_ -DNAME=sgemv_ -DCNAME=sgemv -DCHAR_NAME=\"sgemv_\" -DCHAR_CNAME=\"sgemv\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -o sgemv.o gemv.c
gemv.c: In function 'sgemv_':
gemv.c:242:41: error: 'GEMM_MULTITHREAD_THRESHOLD' undeclared (first use in this function)
   if ( MNK <= (24.0 * 24.0  * (double) (GEMM_MULTITHREAD_THRESHOLD*GEMM_MULTITHREAD_THRESHOLD) )  )

Update: i solved this with USE_THREAD=0

bhack · 2015-06-26T06:55:36Z

@ibrahima What do you think of #562 (comment)?

xianyi · 2015-06-26T19:30:26Z

@bhack , interesting. I didn't meet GEMM_MULTITHREAD_THRESHOLD error before. Could you clone OpenBLAS to a new directory and make?

xianyi · 2015-06-26T19:35:12Z

@bhack , @ibrahima , For #562 (comment) issue, the ARMV5 target only uses C codes. Therefore, it can support softfp ABI by changing the compiler flag at Makefile.arm.

bhack · 2015-06-27T08:50:46Z

@xianyi I think that the problem was with NDK cross compiling Openblas Makefile generate a binary getarch as an ELF 32-bit LSB executable, ARM so that cannot be executed by make script on a x86 host.
I've solved adding HOSTCC=gcc

bhack · 2015-06-30T14:41:07Z

@xianyi I've builded the library under NDK. This is the readelf -A output. It is softfp on armv7a and VFPV3. Will this crash at runtime?

  Tag_CPU_name: "7-A"
  Tag_CPU_arch: v7
  Tag_CPU_arch_profile: Applicazione
  Tag_ARM_ISA_use: Yes
  Tag_THUMB_ISA_use: Thumb-2
  Tag_FP_arch: VFPv3
  Tag_ABI_PCS_wchar_t: 4
  Tag_ABI_FP_denormal: Needed
  Tag_ABI_FP_exceptions: Needed
  Tag_ABI_FP_number_model: IEEE 754
  Tag_ABI_align_needed: 8 byte
  Tag_ABI_align_preserved: 8 byte, ad eccezione della foglia SP
  Tag_ABI_enum_size: int
  Tag_ABI_HardFP_use: SP and DP
  Tag_ABI_optimization_goals: Aggressive Speed
  Tag_CPU_unaligned_access: v6

xianyi · 2015-06-30T15:20:56Z

@bhack , which TARGET do you use? If you use ARMV7 target, I think it should crash.

bhack · 2015-06-30T15:32:36Z

@xianyi Yes ARMV7. Do you want that I make a test to see if it crash?

  Tag_CPU_name: "7-A"
  Tag_CPU_arch: v7

xianyi · 2015-06-30T15:38:23Z

Yes, you can test it. Thank you

bhack · 2015-06-30T15:44:10Z

@xianyi What kind of test do you suggest to run?

xianyi · 2015-06-30T15:54:05Z

You can try to run cblas_dgemm.
https://gist.github.com/xianyi/5783218

bhack · 2015-06-30T18:19:06Z

Yes as i supposed go in segmentation fault on clblas_dgemm call.
We are still trying to figure out how to let opencv and openblas be linked together on Android. @xianyi If you can give some feedback at opencv/opencv#4163 will be appreciated.

xianyi · 2015-07-01T16:34:03Z

@bhack , I think I can add softfp ABI for OpenBLAS Android target. I need to learn how to generate the test binary and deploy on my android phone.

bhack · 2015-07-01T19:26:12Z

It is quite easy to test. I've simply used the standalone toolchain to compile your example, uploaded the executable with adb push and run with adb shell after changing file permission. On the phone I think you need to have a rooted firmware but probably you can try with adb on the emulator.

xianyi · 2015-07-01T20:26:20Z

Thank you for your tip.

I can run the test on my android phone without root now. Put the C binary into /data/local folder.

adb push $yourfile /data/local 
adb shell

bhack · 2015-08-03T10:00:59Z

There is some activity on opencv side at opencv/opencv#5098

xianyi · 2015-08-03T15:40:30Z

@bhack Thank you for the update.

wyansfu · 2015-09-09T06:11:03Z

@xianyi @ibrahima I wonder how to cross compile OpenBLAS with NDK exactly. The first issue I can imagine is there's not Fortran compiler in NDK, are you using something else? Second, I ignore this anyway and follow the instructions in https://github.com/xianyi/OpenBLAS/wiki/User-Manual, i.e.

make CC="/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc" HOSTCC=gcc TARGET=ARMV7

However, I get the output with error.

make[1]: Entering directory `/cs/vml3/wyan/DownloadedSoftware/OpenBLAS-0.2.14/interface'
/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc -O2 -Wall -DF_INTERFACE_G77 -fPIC -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -marm -mfpu=vfpv3  -mfloat-abi=hard -march=armv7-a -DASMNAME=saxpy -DASMFNAME=saxpy_ -DNAME=saxpy_ -DCNAME=saxpy -DCHAR_NAME=\"saxpy_\" -DCHAR_CNAME=\"saxpy\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -c axpy.c -o saxpy.o
/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc -O2 -Wall -DF_INTERFACE_G77 -fPIC -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -marm -mfpu=vfpv3  -mfloat-abi=hard -march=armv7-a -DASMNAME=sswap -DASMFNAME=sswap_ -DNAME=sswap_ -DCNAME=sswap -DCHAR_NAME=\"sswap_\" -DCHAR_CNAME=\"sswap\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -c swap.c -o sswap.o
/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc -O2 -Wall -DF_INTERFACE_G77 -fPIC -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -marm -mfpu=vfpv3  -mfloat-abi=hard -march=armv7-a -DASMNAME=scopy -DASMFNAME=scopy_ -DNAME=scopy_ -DCNAME=scopy -DCHAR_NAME=\"scopy_\" -DCHAR_CNAME=\"scopy\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -c copy.c -o scopy.o
/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc -O2 -Wall -DF_INTERFACE_G77 -fPIC -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -marm -mfpu=vfpv3  -mfloat-abi=hard -march=armv7-a -DASMNAME=sscal -DASMFNAME=sscal_ -DNAME=sscal_ -DCNAME=sscal -DCHAR_NAME=\"sscal_\" -DCHAR_CNAME=\"sscal\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -c scal.c -o sscal.o
/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc -O2 -Wall -DF_INTERFACE_G77 -fPIC -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -marm -mfpu=vfpv3  -mfloat-abi=hard -march=armv7-a -DASMNAME=sdot -DASMFNAME=sdot_ -DNAME=sdot_ -DCNAME=sdot -DCHAR_NAME=\"sdot_\" -DCHAR_CNAME=\"sdot\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -c dot.c -o sdot.o
/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc -O2 -Wall -DF_INTERFACE_G77 -fPIC -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -marm -mfpu=vfpv3  -mfloat-abi=hard -march=armv7-a -DASMNAME=sdsdot -DASMFNAME=sdsdot_ -DNAME=sdsdot_ -DCNAME=sdsdot -DCHAR_NAME=\"sdsdot_\" -DCHAR_CNAME=\"sdsdot\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -c sdsdot.c -o sdsdot.o
/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc -O2 -Wall -DF_INTERFACE_G77 -fPIC -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -marm -mfpu=vfpv3  -mfloat-abi=hard -march=armv7-a -DASMNAME=dsdot -DASMFNAME=dsdot_ -DNAME=dsdot_ -DCNAME=dsdot -DCHAR_NAME=\"dsdot_\" -DCHAR_CNAME=\"dsdot\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -c dsdot.c -o dsdot.o
/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc -O2 -Wall -DF_INTERFACE_G77 -fPIC -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=8 -marm -mfpu=vfpv3  -mfloat-abi=hard -march=armv7-a -DASMNAME=sasum -DASMFNAME=sasum_ -DNAME=sasum_ -DCNAME=sasum -DCHAR_NAME=\"sasum_\" -DCHAR_CNAME=\"sasum\" -DNO_AFFINITY -I.. -I. -UDOUBLE  -UCOMPLEX -c asum.c -o sasum.o
In file included from scal.c:40:0:
../common.h:109:21: fatal error: sys/shm.h: No such file or directory
 #include <sys/shm.h>
                     ^
In file included from axpy.c:40:0:
../common.h:109:21: fatal error: sys/shm.h: No such file or directory
 #include <sys/shm.h>
                     ^
In file included from dsdot.c:40:0:
../common.h:109:21: fatal error: sys/shm.h: No such file or directory
 #include <sys/shm.h>
                     ^
In file included from swap.c:40:0:
../common.h:109:21: fatal error: sys/shm.h: No such file or directory
 #include <sys/shm.h>
                     ^
compilation terminated.
In file included from dot.c:40:0:
../common.h:109:21: fatal error: sys/shm.h: No such file or directory
 #include <sys/shm.h>
                     ^
In file included from copy.c:40:0:
../common.h:109:21: fatal error: sys/shm.h: No such file or directory
 #include <sys/shm.h>
                     ^
compilation terminated.
compilation terminated.
compilation terminated.
compilation terminated.
In file included from asum.c:40:0:
../common.h:109:21: fatal error: sys/shm.h: No such file or directory
 #include <sys/shm.h>
                     ^
In file included from sdsdot.c:40:0:
../common.h:109:21: fatal error: sys/shm.h: No such file or directory
 #include <sys/shm.h>
                     ^
compilation terminated.
make[1]: *** [sdot.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: *** [sswap.o] Error 1
make[1]: *** [dsdot.o] Error 1
make[1]: *** [scopy.o] Error 1
make[1]: *** [sasum.o] Error 1
make[1]: *** [sscal.o] Error 1
compilation terminated.
compilation terminated.
make[1]: *** [saxpy.o] Error 1
make[1]: *** [sdsdot.o] Error 1
make[1]: Leaving directory `/cs/vml3/wyan/DownloadedSoftware/OpenBLAS-0.2.14/interface'
make: *** [libs] Error 1

I can find the missing shm.h somewhere in the toolchain folder, but it's not under sys. Should I modify the source? I'm using NDK r10e.

I also have tried to integrate the pre-compiled OpenBLAS from http://sourceforge.net/projects/openblas/files/v0.2.14/OpenBLAS-v0.2.14-armv7a.tar.gz/download into my C++ code which calls some cblas functions, but had the following error when trying to load the OpenBLAS shared library. My project is built using tools from taka-no-me/android-cmake#59 with ANDROID_ABI="armeabi-v7a-hard with NEON"

Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: soinfo_link_image(linker.cpp:1635): could not load library "libm.so.6" needed by "libopenblas_armv7p-r0.2.14.so"; caused by load_library(linker.cpp:745): library "libm.so.6" not found

Thank you very much.

ibrahima · 2015-09-09T07:32:39Z

I don't have time to give a full explanation, but basically you need to build a standalone NDK toolchain (with headers from 5.0/5.1 IIRC) and modify the NDK source to build a gcc toolchain. I took the instructions from http://danilogiulianelli.blogspot.com/2013/02/how-to-build-gcc-fortran-cross-compiler.html and updated the patch for the latest version of the ndk.

These repos might help with building an up to date NDK toolchain with Fortran:

https://github.com/biotrump/ndk-r10e-build
https://github.com/biotrump/fortran-NDK

Hope that helps!

wyansfu · 2015-09-09T15:35:44Z

@ibrahima Do you have the header problem I mentioned? Which API level do you use in the toolchain? Thank you.

xianyi · 2015-09-09T15:53:55Z

@wyansfu, could you try develop branch? I think it support android.

https://github.com/xianyi/OpenBLAS/wiki/How-to-build-OpenBLAS-for-Android

ibrahima · 2015-09-09T21:06:24Z

@wyansfu I used the latest API level, I think some of the needed headers weren't added until 5.0 or 5.1.

buffer51 · 2015-09-15T03:57:59Z

@wyansfu I have managed to compile with multithreading and LAPACK, but that requires a Fortran compiler as @ibrahima mentionned. I'm putting instructions together, should not be long.

Did you try building without multithreading and LAPACK though (USE_THREAD=0 NO_LAPACK=1)? I had it working with NDK r10e out of the box. You should specify the Android sysroot for the GCC toolchain. Try CC="/path/to/ndk/toolchain/arm-linux-androideabi-4.9/prebuilt/.../bin/arm-linux-androideabi-gcc --sysroot=/path/to/ndk/platforms/android-21/arch-arm"

wyansfu · 2015-09-15T04:58:53Z

@xianyi It compiles and works with your instructions. Thank you very much. There seems to be a bug in the makefile. For path with '-', the make command may fail, e.g.

make CC=/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc HOSTCC=gcc TARGET=ARMV7 NO_LAPACK=1

reports

make[1]: /cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-ar: Command not found
make[1]: *** [libs] Error 127
make[1]: Leaving directory `/cs/vml3/wyan/DownloadedSoftware/OpenBLAS-developcopy/interface'
make: *** [libs] Error 1

And I have to use

make CC=/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi-gcc CROSS_SUFFIX=/cs/vml3/wyan/DownloadedSoftware/AndroidToolChain/arm-linux-androideabi-4.9APILevel8/bin/arm-linux-androideabi- HOSTCC=gcc TARGET=ARMV7 NO_LAPACK=1

@ibrahima @buffer51 I have not tried to compile the LAPACK since I'm not using it. But your posts are anyway very helpful, and I bet there are lots of people want to compile OpenBLAS with LAPACK. Thank you all the same.
@buffer51 I have tried to build without LAPACK according to the post of @xianyi, and it works. But I have not tried USE_THREAD=0.

buffer51 · 2015-09-15T13:18:09Z

@wyansfu If it works fine without the USE_THREAD=0 don't add it, it was just to disable multi-threading to be sure it compiled.

xylcbd · 2015-12-28T06:20:13Z

so,is there any andorid arm-based openbla binary package ? can I use openblas on android system? thx.

grandLee · 2016-09-23T13:07:27Z

@xianyi do you have the plan to compile the android version of 0.2.9.rc2,since we need the lapacke，but i'm not good at this，or could anyone give me some assist?thanks!

buffer51 · 2016-09-23T15:57:03Z

@grandLee Please see https://github.com/xianyi/OpenBLAS/wiki/How-to-build-OpenBLAS-for-Android for instructions to build OpenBLAS for Android, with lapacke.

shenyuhit · 2016-12-20T01:40:00Z

@xianyi
with "http://sourceforge.net/projects/openblas/files/v0.2.8-arm/openblas-v0.2.8-android-rc1.tar.gz/download" i can run my app on android is ok! but how can i build the libopenblas.a myself ?

i try build with the version 0.2.19,.
${ANDROID_NDK}/build/tools/make_standalone_toolchain.py --arch arm --api 21 --install-dir /tmp/my-android-toolchain
export PATH="/tmp/my-android-toolchain/bin:$PATH";make TARGET=ARMV7 HOSTCC=gcc CC=arm-linux-androideabi-gcc ARM_SOFT_FLOAT_ABI=1 NOFORTRAN=1 USE_THREAD=0

but my app is crash every time !

buffer51 · 2016-12-20T10:16:03Z

@shenyuhit Hi, do you mean that building OpenBLAS doesn't work (i.e. your make command) or that it does, but then when you use the generated libopenblas.a your app crashes?

shenyuhit · 2016-12-27T01:04:56Z

@buffer51 yes, my app crashes with the libopenblas.a generated by myself! Do you have any advise ?

buffer51 · 2016-12-29T12:36:21Z

Do you happen to have logs from the crashes?

wernsaar added the Feature label Jun 4, 2014

bhack mentioned this issue Jun 18, 2015

Make HDF5 components optional for configurable build BVLC/caffe#2619

Closed

bhack mentioned this issue Jul 16, 2015

Add arm ABI hard on android opencv/opencv#4163

Closed

xianyi closed this as completed Oct 29, 2015

sh1r0 mentioned this issue Dec 31, 2015

About Openblas sh1r0/caffe-android-lib#27

Closed

jainanshul mentioned this issue Feb 3, 2016

Why does OpenBLAS not support sofftp with ARMv7 #777

Closed

Problems with using arm version on Android #363

Problems with using arm version on Android #363

Comments

kurak38 commented Apr 22, 2014

xianyi commented Apr 22, 2014

kurak38 commented Apr 22, 2014

xianyi commented Apr 22, 2014

xianyi commented Apr 22, 2014

kurak38 commented Apr 22, 2014

xianyi commented Apr 22, 2014

kurak38 commented Apr 22, 2014

xianyi commented Apr 24, 2014

soumith commented Apr 24, 2014

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