Hi,

It seems the code has failed to run on the GPU so it resorts to CPU instead.


On Sunday, 18 September 2016 11:32:04 UTC+12, John Novak wrote:
>
> Hi.
>
> I have a freshly unboxed Jetson TX1, successfully flashed this afternoon 
> with JetPack 2.3.  Python 2.7.12 and Theano 0.9.0.dev are also freshly 
> installed, using the TX1 install instructions from here:  
> http://deeplearning.net/software/theano/install_ubuntu.html
> I've been trying to get the GPU test script working from here, with no 
> success: 
> http://deeplearning.net/software/theano_versions/dev/tutorial/using_gpu.html
>
> The command that works best is:  
>
> THEANO_FLAGS=device=gpu python gpu_tutorial1.py
>
> The result, however, is a lengthy series of warnings and ultimately an 
> execution on the CPU rather than the GPU:
>
> Using gpu device 0: NVIDIA Tegra X1 (CNMeM is disabled, cuDNN 5105)
> WARNING (theano.gof.cmodule): OPTIMIZATION WARNING: Theano was not able to 
> find the default g++ parameters. This is needed to tune the compilation to 
> your specific CPU. This can slow down the execution of Theano functions. 
> Please submit the following lines to Theano's mailing list so that we can 
> fix this problem:
>  ['# 1 "<stdin>"\n', '# 1 "<built-in>"\n', '# 1 "<command-line>"\n', '# 1 
> "/usr/include/stdc-predef.h" 1 3 4\n', '# 1 "<command-line>" 2\n', '# 1 
> "<stdin>"\n', 'Using built-in specs.\n', 'COLLECT_GCC=/usr/bin/g++\n', 
> 'Target: aarch64-linux-gnu\n', "Configured with: ../src/configure -v 
> --with-pkgversion='Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.2' 
> --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs 
> --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr 
> --program-suffix=-5 --enable-shared --enable-linker-build-id 
> --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix 
> --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu 
> --enable-libstdcxx-debug --enable-libstdcxx-time=yes 
> --with-default-libstdcxx-abi=new --enable-gnu-unique-object 
> --disable-libquadmath --enable-plugin --with-system-zlib 
> --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo 
> --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-arm64/jre --enable-java-home 
> --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-arm64 
> --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-arm64 
> --with-arch-directory=aarch64 
> --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-multiarch 
> --enable-fix-cortex-a53-843419 --disable-werror --enable-checking=release 
> --build=aarch64-linux-gnu --host=aarch64-linux-gnu 
> --target=aarch64-linux-gnu\n", 'Thread model: posix\n', 'gcc version 5.4.0 
> 20160609 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.2) \n', 
> "COLLECT_GCC_OPTIONS='-E' '-v' '-shared-libgcc' '-mlittle-endian' 
> '-mabi=lp64'\n", ' /usr/lib/gcc/aarch64-linux-gnu/5/cc1 -E -quiet -v 
> -imultiarch aarch64-linux-gnu - -mlittle-endian -mabi=lp64 
> -fstack-protector-strong -Wformat -Wformat-security\n', 'ignoring 
> nonexistent directory "/usr/local/include/aarch64-linux-gnu"\n', 'ignoring 
> nonexistent directory 
> "/usr/lib/gcc/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/include"\n', 
> '#include "..." search starts here:\n', '#include <...> search starts 
> here:\n', ' /usr/lib/gcc/aarch64-linux-gnu/5/include\n', ' 
> /usr/local/include\n', ' /usr/lib/gcc/aarch64-linux-gnu/5/include-fixed\n', 
> ' /usr/include/aarch64-linux-gnu\n', ' /usr/include\n', 'End of search 
> list.\n', 
> 'COMPILER_PATH=/usr/lib/gcc/aarch64-linux-gnu/5/:/usr/lib/gcc/aarch64-linux-gnu/5/:/usr/lib/gcc/aarch64-linux-gnu/:/usr/lib/gcc/aarch64-linux-gnu/5/:/usr/lib/gcc/aarch64-linux-gnu/\n',
>  
> 'LIBRARY_PATH=/usr/lib/gcc/aarch64-linux-gnu/5/:/usr/lib/gcc/aarch64-linux-gnu/5/../../../aarch64-linux-gnu/:/usr/lib/gcc/aarch64-linux-gnu/5/../../../../lib/:/lib/aarch64-linux-gnu/:/lib/../lib/:/usr/lib/aarch64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/aarch64-linux-gnu/5/../../../:/lib/:/usr/lib/\n',
>  
> "COLLECT_GCC_OPTIONS='-E' '-v' '-shared-libgcc' '-mlittle-endian' 
> '-mabi=lp64'\n"]
> [Elemwise{exp,no_inplace}(<TensorType(float64, vector)>)]
> Looping 1000 times took 12.813382 seconds
> Result is [ 1.23178032  1.61879341  1.52278065 ...,  2.20771815  2.29967753
>   1.62323285]
> Used the cpu
>
> A better formatted version of this question can be found at Stack 
> Overflow:  
> http://stackoverflow.com/questions/39552515/theano-gpu-usage-on-a-new-jetson-tx1
>
> Does anyone know why the TX1 is stubbornly executing this on the GPU 
> rather than the CPU?
> And is this the appropriate mailing list to report the warning as 
> directed?  If not, can someone kindly tell me what the right list is?
>

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