def verify_multibox_prior(dshape, sizes=(1,), ratios=(1,), steps=(-1, -1), offsets=(0.5, 0.5), clip=False):
data = tvm.placeholder(dshape, name="data")
out = ssd.multibox_prior(data, sizes, ratios, steps, offsets, clip)
dtype = data.dtype
input_data = np.random.uniform(size=dshape).astype(dtype)
in_height = data.shape[2].value
in_width = data.shape[3].value
num_sizes = len(sizes)
num_ratios = len(ratios)
size_ratio_concat = sizes + ratios
steps_h = steps[0] if steps[0] > 0 else 1.0 / in_height
steps_w = steps[1] if steps[1] > 0 else 1.0 / in_width
offset_h = offsets[0]
offset_w = offsets[1]
oshape = (1, in_height * in_width * (num_sizes + num_ratios - 1), 4)
np_out = np.zeros(oshape).astype(dtype)
for i in range(in_height):
center_h = (i + offset_h) * steps_h
for j in range(in_width):
center_w = (j + offset_w) * steps_w
for k in range(num_sizes + num_ratios - 1):
w = size_ratio_concat[k] * in_height / in_width / 2.0 if k < num_sizes else \
size_ratio_concat[0] * in_height / in_width * math.sqrt(size_ratio_concat[k + 1]) / 2.0
h = size_ratio_concat[k] / 2.0 if k < num_sizes else \
size_ratio_concat[0] / math.sqrt(size_ratio_concat[k + 1]) / 2.0
count = i * in_width * (num_sizes + num_ratios - 1) + j * (num_sizes + num_ratios - 1) + k
np_out[0][count][0] = center_w - w
np_out[0][count][1] = center_h - h
np_out[0][count][2] = center_w + w
np_out[0][count][3] = center_h + h
if clip:
np_out = np.clip(np_out, 0, 1)
def check_device(device):
ctx = tvm.context(device, 0)
if not ctx.exist:
print("Skip because %s is not enabled" % device)
return
print("Running on target: %s" % device)
with tvm.target.create(device):
s = topi.generic.schedule_multibox_prior(out)
tvm_input_data = tvm.nd.array(input_data, ctx)
tvm_out = tvm.nd.array(np.zeros(oshape, dtype=dtype), ctx)
f = tvm.build(s, [data, out], device)
f(tvm_input_data, tvm_out)
np.testing.assert_allclose(tvm_out.asnumpy(), np_out, rtol=1e-4)
for device in ['llvm']:
check_device(device)
def check_device(device):
ctx = tvm.context(device, 0)
if not ctx.exist:
print("Skip because %s is not enabled" % device)
return
print("Running on target: %s" % device)
with tvm.target.create(device):
if device == 'llvm':
out = ssd.multibox_prior(data, sizes, ratios, steps, offsets, clip)
else:
out = topi.cuda.ssd.multibox_prior(data, sizes, ratios, steps, offsets, clip)
s = topi.generic.schedule_multibox_prior(out)
tvm_input_data = tvm.nd.array(input_data, ctx)
tvm_out = tvm.nd.array(np.zeros(oshape, dtype=dtype), ctx)
f = tvm.build(s, [data, out], device)
f(tvm_input_data, tvm_out)
tvm.testing.assert_allclose(tvm_out.asnumpy(), np_out, rtol=1e-3)
def check_device(device):
ctx = tvm.context(device, 0)
if not ctx.exist:
print("Skip because %s is not enabled" % device)
return
print("Running on target: %s" % device)
with tvm.target.create(device):
if device == 'llvm':
out = ssd.multibox_prior(data, sizes, ratios, steps, offsets, clip)
else:
out = topi.cuda.ssd.multibox_prior(data, sizes, ratios, steps, offsets, clip)
s = topi.generic.schedule_multibox_prior(out)
tvm_input_data = tvm.nd.array(input_data, ctx)
tvm_out = tvm.nd.array(np.zeros(oshape, dtype=dtype), ctx)
f = tvm.build(s, [data, out], device)
f(tvm_input_data, tvm_out)
tvm.testing.assert_allclose(tvm_out.asnumpy(), np_out, rtol=1e-3)