debugging.lua

require 'cutorch'
require 'cunn'

-- problem appears with two or more layers
model = nn.Sequential()
model:add( nn.SpatialConvolution(1,10,3,3) )
model:add( nn.SpatialConvolution(10,20,3,3) )
model:cuda()

print( 'This works' )
weights, gradients = model:getParameters()

-- convert to float and store
copy = model:clone():float()
torch.save( 'copy.t7', copy )

-- load and move to GPU
stored = torch.load( 'copy.t7' )
stored:cuda()
print( 'This crashes' )
weights, gradients = stored:getParameters()