Update to Theano 1.0rc1. We updated error information heavily and I think it will help your case: https://github.com/Theano/Theano/wiki/Converting-to-the-new-gpu-back-end(gpuarray)
On Wed, Nov 1, 2017 at 9:37 AM Mathias Müller <this...@gmail.com> wrote: > Hi, > > I am getting the following theano error: > > Traceback (most recent call last): > File "/home/user/mmueller/nematus-context2/nematus/nmt.py", line 1995, > in <module> > train(**vars(args)) > File "/home/user/mmueller/nematus-context2/nematus/nmt.py", line 1439, > in train > grads = tensor.grad(cost, wrt=itemlist(updated_params)) > File > "/home/user/mmueller/.pythonz/pythons/CPython-2.7.13/lib/python2.7/site-packages/theano/gradient.py" > , line 539, in grad > handle_disconnected(elem) > File > "/home/user/mmueller/.pythonz/pythons/CPython-2.7.13/lib/python2.7/site-packages/theano/gradient.py" > , line 526, in handle_disconnected > raise DisconnectedInputError(message) > theano.gradient.DisconnectedInputError: > Backtrace when that variable is created: > > File "/home/user/mmueller/nematus-context2/nematus/nmt.py", line 1995, > in <module> > train(**vars(args)) > File "/home/user/mmueller/nematus-context2/nematus/nmt.py", line 1377, > in train > tparams = init_theano_params(params) > File "/home/user/mmueller/nematus-context2/nematus/theano_util.py", > line 57, in init_theano_params > tparams[kk] = theano.shared(params[kk], name=kk) > > > As far as I understand, this means that I am requesting the gradient with > respect to a variable that was not used to compute the cost. > > My model has a large number of theano variables, and I find the error > message a bit uninformative. *How can I find out which variable is > causing this error?* > > $ python -c "import theano; print theano.version.version" > 0.9.0 > > > Thanks so much, > Mathias > > -- > > --- > 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 theano-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- --- 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 theano-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
