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 <[email protected]> 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, <[email protected]> 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? >> >> -- >> >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "theano-users" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/theano-users/hrMCFAGV-2o/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> For more options, visit https://groups.google.com/d/optout. > > > > -- > John S. Novak, III > [email protected] -- John S. Novak, III [email protected] -- --- You received this message because you are subscribed to the Google Groups "theano-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
