ERROR: Cannot access file model/ilsvrc12_mean.hdf5

[memoiry]

I followed "Image Classification with Pre-trained Imagenet CNN" instruction and was stuck while trying to implement
julia > net = Net("imagenet", backend, layers)

it follows

26- 4 09:53:00:INFO:root:Constructing net imagenet on Mocha.CPUBackend...
26- 4 09:53:00:INFO:root:Topological sorting 16 layers...
26- 4 09:53:00:INFO:root:Setup layers...
HDF5-DIAG: Error detected in HDF5 (1.8.15-patch1) thread 0:
#000: H5F.c line 439 in H5Fis_hdf5(): unable open file
major: File accessibilty
minor: Not an HDF5 file
#1: H5Fint.c line 554 in H5F_is_hdf5(): unable to open file
major: Low-level I/O
minor: Unable to initialize object
#2: H5FD.c line 993 in H5FD_open(): open failed
major: Virtual File Layer
minor: Unable to initialize object
#3: H5FDsec2.c line 343 in H5FD_sec2_open(): unable to open file: name = 'model/ilsvrc12_mean.hdf5', errno = 2, error message = 'No such file or directory', flags = 0, o_flags = 0
major: File accessibilty
minor: Unable to open file
ERROR: Cannot access file model/ilsvrc12_mean.hdf5
in h5open at /Users/xuguodong/.julia/v0.4/HDF5/src/plain.jl:547
in h5open at /Users/xuguodong/.julia/v0.4/HDF5/src/plain.jl:557
in h5open at /Users/xuguodong/.julia/v0.4/HDF5/src/plain.jl:565
in setup at /Users/xuguodong/.julia/v0.4/Mocha/src/data-transformers.jl:34
in call at /Users/xuguodong/.julia/v0.4/Mocha/src/layers/memory-data.jl:31
in setup at /Users/xuguodong/.julia/v0.4/Mocha/src/layers/memory-data.jl:51
in setup at /Users/xuguodong/.julia/v0.4/Mocha/src/layers.jl:112
in call at /Users/xuguodong/.julia/v0.4/Mocha/src/net.jl:227

what's wrong, is there any package I have not installed?

thx for help

[pluskid]

You need to run the script in that folder to download pretrained model first.