And the answer is, because the invocation needs multiple flags set, as follows:

THEANO_FLAGS='device=gpu,floatX=float32' python gpu_tutorial1.py

This causes everything to work just fine.

On Sat, Sep 17, 2016 at 6:53 PM, John Novak <john.no...@gmail.com> wrote:
> Hi,
>
> Yes, that's what it looks like.  Perhaps I might better ask:
> Why is this failing to run on the GPU and how do I make it run on the GPU?
>
> On Sat, Sep 17, 2016 at 6:52 PM,  <w.f.wilson...@gmail.com> wrote:
>> 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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>>
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>
>
>
> --
> John S. Novak, III
> john.no...@gmail.com



-- 
John S. Novak, III
john.no...@gmail.com

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