def test_linear_zeros(backend_default, basic_linargs):
# basic sanity check with 0 weights random inputs
nin, nout, batch_size = basic_linargs
NervanaObject.be.bsz = batch_size
dtypeu = np.float32
init_unif = Uniform(low=0.0, high=0.0)
layer = Linear(nout=nout, init=init_unif)
inp = layer.be.array(dtypeu(np.random.random((nin, batch_size))))
layer.configure(nin)
layer.prev_layer = True # Hack to force delta buffer allocation
layer.allocate()
layer.set_deltas([layer.be.iobuf(nin)])
out = layer.fprop(inp).get()
assert np.min(out) == 0.0 and np.max(out) == 0.0
err = dtypeu(np.zeros((nout, batch_size)))
deltas = layer.bprop(layer.be.array(err)).get()
assert np.min(deltas) == 0.0 and np.max(deltas) == 0.0
dw = layer.dW.get()
assert np.min(dw) == 0.0 and np.max(dw) == 0.0
return
def test_linear_zeros(backend_default, basic_linargs):
# basic sanity check with 0 weights random inputs
nin, nout, batch_size = basic_linargs
NervanaObject.be.bsz = batch_size
dtypeu = np.float32
init_unif = Uniform(low=0.0, high=0.0)
layer = Linear(nout=nout, init=init_unif)
inp = layer.be.array(dtypeu(np.random.random((nin, batch_size))))
layer.configure(nin)
layer.prev_layer = True # Hack to force delta buffer allocation
layer.allocate()
layer.set_deltas([layer.be.iobuf(nin)])
out = layer.fprop(inp).get()
assert np.min(out) == 0.0 and np.max(out) == 0.0
err = dtypeu(np.zeros((nout, batch_size)))
deltas = layer.bprop(layer.be.array(err)).asnumpyarray()
assert np.min(deltas) == 0.0 and np.max(deltas) == 0.0
dw = layer.dW.asnumpyarray()
assert np.min(dw) == 0.0 and np.max(dw) == 0.0
return
def test_all_rand(backend_default, allrand_args, deltas_buffer):
# test with random weights and random inputs
dtypeu = np.float32
w_rng, rngmax = allrand_args
inp_rng = [0.0, rngmax]
nin = 1024
nout = 2048
batch_size = 16
NervanaObject.be.bsz = batch_size
init_unif = Uniform(low=w_rng[0], high=w_rng[1])
layer = Linear(nout=nout, init=init_unif)
inp = np.random.random((nin, batch_size))
inp *= inp_rng[1] - inp_rng[0]
inp += inp_rng[0]
inp = inp.astype(dtypeu)
layer.configure(nin)
layer.prev_layer = True # Hack to force delta buffer allocation
layer.allocate()
layer.allocate_deltas(deltas_buffer)
deltas_buffer.allocate_buffers()
layer.set_deltas(deltas_buffer)
out = layer.fprop(layer.be.array(inp)).get()
w = layer.W.get()
# the expected output using numpy
out_exp = np.dot(w, inp)
# for larger layers need to estimate numerical precision
atol = 2 * est_mm_prec(w, inp, ntrials=1)
assert np.allclose(out_exp, out, atol=atol, rtol=0.0), \
'%e %e' % (np.max(np.abs(out - out_exp)), atol)
err = np.random.random((nout, batch_size))
err = err * (inp_rng[1] - inp_rng[0]) + inp_rng[0]
err = err.astype(dtypeu)
deltas = layer.bprop(layer.be.array(err)).get()
dw = layer.dW.get()
deltas_exp = np.dot(w.T, err)
atol = 2 * est_mm_prec(w.T, err, ntrials=1)
assert np.allclose(deltas_exp, deltas, atol=atol, rtol=0.0), \
'%e %e' % (np.max(np.abs(deltas_exp - deltas)), atol)
dw_exp = np.dot(err, inp.T)
atol = 2 * est_mm_prec(err, inp.T, ntrials=1)
assert np.allclose(dw_exp, dw, atol=atol, rtol=0.0), \
'%e %e' % (np.max(np.abs(dw_exp - dw)), atol)
return
def test_linear_zeros(backend, basic_linargs):
# basic sanity check with 0 weights random inputs
nin, nout, batch_size = basic_linargs
NervanaObject.be.bsz = NervanaObject.be.bs = batch_size
dtypeu = np.float32
init_unif = Uniform(low=0.0, high=0.0)
layer = Linear(nout=nout, init=init_unif)
inp = layer.be.array(dtypeu(np.random.random((nin, batch_size))))
out = layer.fprop(inp).get()
assert np.min(out) == 0.0 and np.max(out) == 0.0
err = dtypeu(np.zeros((nout, batch_size)))
deltas = layer.bprop(layer.be.array(err)).asnumpyarray()
assert np.min(deltas) == 0.0 and np.max(deltas) == 0.0
dw = layer.dW.asnumpyarray()
assert np.min(dw) == 0.0 and np.max(dw) == 0.0
return
def test_linear_zeros(backend, basic_linargs):
# basic sanity check with 0 weights random inputs
nin, nout, batch_size = basic_linargs
NervanaObject.be.bsz = NervanaObject.be.bs = batch_size
dtypeu = np.float32
init_unif = Uniform(low=0.0, high=0.0)
layer = Linear(nout=nout, init=init_unif)
inp = layer.be.array(dtypeu(np.random.random((nin, batch_size))))
out = layer.fprop(inp).get()
assert np.min(out) == 0.0 and np.max(out) == 0.0
err = dtypeu(np.zeros((nout, batch_size)))
deltas = layer.bprop(layer.be.array(err)).asnumpyarray()
assert np.min(deltas) == 0.0 and np.max(deltas) == 0.0
dw = layer.dW.asnumpyarray()
assert np.min(dw) == 0.0 and np.max(dw) == 0.0
return
