def test_slicing(fargs_tests):
dims, dtype = fargs_tests
gpu = NervanaGPU(default_dtype=dtype)
cpu = NervanaCPU(default_dtype=dtype)
array_np = np.random.uniform(-1, 1, dims).astype(dtype)
array_ng = gpu.array(array_np, dtype=dtype)
array_nc = cpu.array(array_np, dtype=dtype)
assert_tensors_allclose(array_ng[0], array_nc[0], rtol=0, atol=1e-3)
assert_tensors_allclose(array_ng[-1], array_nc[-1], rtol=0, atol=1e-3)
assert_tensors_allclose(array_ng[0, :], array_nc[0, :], rtol=0, atol=1e-3)
assert_tensors_allclose(array_ng[0:], array_nc[0:], rtol=0, atol=1e-3)
assert_tensors_allclose(array_ng[:-1], array_nc[:-1], rtol=0, atol=1e-3)
assert_tensors_allclose(array_ng[:, 0], array_nc[:, 0], rtol=0, atol=1e-3)
assert_tensors_allclose(array_ng[:, 0:1], array_nc[:, 0:1], rtol=0, atol=1e-3)
assert_tensors_allclose(array_ng[-1, 0:], array_nc[-1:, 0:], rtol=0, atol=1e-3)
array_ng[0] = 0
array_nc[0] = 0
assert_tensors_allclose(array_ng, array_nc, rtol=0, atol=1e-3)
del(gpu)
def test_pool_layer(poolargs):
op = poolargs[0]
dtype = np.float32
ng = NervanaGPU(stochastic_round=False, bench=True)
nc = NervanaCPU()
N, C = 32, 32
D, H, W = 1, 32, 32
J, T, R, S = 2, 1, 3, 3
padding_j, padding_d, padding_h, padding_w = 0, 0, 0, 0
strides_j, strides_d, strides_h, strides_w = 2, 1, 2, 2
# op = 'max'
pool_ng = ng.pool_layer(dtype, op, N, C, D, H, W, J, T, R, S, padding_j,
padding_d, padding_h, padding_w, strides_j,
strides_d, strides_h, strides_w)
pool_nc = nc.pool_layer(dtype, op, N, C, D, H, W, J, T, R, S, padding_j,
padding_d, padding_h, padding_w, strides_j,
strides_d, strides_h, strides_w)
assert pool_ng.dimI == pool_nc.dimI
assert pool_ng.dimO == pool_nc.dimO
dimI = pool_ng.dimI
dimO = pool_ng.dimO
# generating input arrays for inputs and errors
cpuI = np.random.uniform(0.0, 1.0,
sliceable(dimI,
1)).astype(np.float16).astype(dtype)
cpuE = np.random.uniform(-0.2, 0.2, dimO).astype(dtype)
# zero pad the last row of cpu input for the sake of numpy
if op == "max":
cpuI[-1, :] = np.finfo(dtype).min
else:
cpuI[-1, :] = 0
# =========GPU and CPU and numpy ==========
beI = cpuI[:-1, :].reshape(dimI)
beE = cpuE
ngO, ngB = run_backend_pool(ng, pool_ng, beI, beE, dtype)
ncO, ncB = run_backend_pool(nc, pool_nc, beI, beE, dtype)
cpuO, cpuB = run_numpy_pool(op, cpuI, cpuE, dtype, pool_ng)
for opA, ngA, ncA, cpuA in (("fprop", ngO, ncO, cpuO),
("bprop", ngB, ncB.reshape(dimI),
cpuB[:-1, :].reshape(dimI))):
print opA
assert np.allclose(ngA.get(), ncA.get(), rtol=0, atol=1e-4)
assert np.allclose(ncA.get(), cpuA, rtol=0, atol=1e-5)
del ng, nc
def test_pooling(device_id):
ng = NervanaGPU(stochastic_round=False, bench=True, device_id=device_id)
nc = NervanaCPU()
layer_args = dict(dtype=np.float32, N=122, C=16, D=1, H=32, W=32, J=5)
pool_test_args = dict(ones=0, cpu=1, ng=ng, nc=nc,
alpha=1.0, # not supported in CPU
ascale=1.2,
beta=0.0, # not supported in CPU
bpower=0.5,
layer_g=ng.lrn_layer(**layer_args), # returns a pool layer
layer_c=nc.lrn_layer(**layer_args),
**layer_args)
lrn_helper(**pool_test_args)
def test_edge_cases(device_id):
"""
Test several edge cases related to min/max bin, and rounding.
Also test backend dump_hist_data functionality.
"""
gpuflag = (check_gpu.get_compute_capability(0) >= 3.0)
if gpuflag is False:
raise RuntimeError("Device does not have CUDA compute capability 3.0 or greater")
ng = NervanaGPU(device_id=device_id)
nc = NervanaCPU()
# edge case test
np_ref = dict()
inputs = [
("edges", np.array([2 ** -48, 2 ** 15], dtype=np.float32)),
("rounding", np.array([2 ** 5, 63.99998856, 2 ** 6, 2 ** -3, 2 ** -4,
0.11262291, 92.22483826], dtype=np.float32)),
("fp16 rounding", np.array([45.21875], dtype=np.float16))
]
for tag, inp in inputs:
np_ref[tag] = ref_hist(inp)
for be in [ng, nc]:
be_inp = be.array(inp)
be_hist = be_inp.hist(tag)
assert tensors_allclose(np_ref[tag], be_hist), tag + str(be)
# dump_hist_data test
for be in [ng, nc]:
be_hist_data, be_hist_map = be.dump_hist_data()
for tag, inp in inputs:
be_data = be_hist_data[be_hist_map[tag]]
assert tensors_allclose(np_ref[tag], be_data), tag + str(be)
del(ng)
del(nc)
def test_hist(nbin_offset_dim_dtype_inp):
"""
Compare the nervanagpu and nervanacpu hist implementation to the reference
implementation above.
Parameterized test case, uses pytest_generate_test to enumerate dim_dtype_inp
tuples that drive the test.
"""
(nbins, offset), dim, dtype, (name, inp_gen) = nbin_offset_dim_dtype_inp
gpuflag = (check_gpu.get_compute_capability(0) >= 3.0)
if gpuflag is False:
raise RuntimeError(
"Device does not have CUDA compute capability 3.0 or greater")
ng = NervanaGPU(hist_bins=nbins, hist_offset=offset)
nc = NervanaCPU(hist_bins=nbins, hist_offset=offset)
np_inp = inp_gen(dim).astype(dtype)
np_hist = ref_hist(np_inp, nbins=nbins, offset=offset)
for be in [ng, nc]:
be_inp = be.array(np_inp, dtype=dtype)
be_hist = be_inp.hist(name)
assert_tensors_allclose(np_hist, be_hist)
del (ng)
del (nc)
def test_batched_dot():
np.set_printoptions(threshold=8192 * 4, linewidth=600,
formatter={'int': lambda x: "%2d" % x, 'float': lambda x: "%2.0f" % x})
ng = NervanaGPU(stochastic_round=False, bench=1)
nc = NervanaCPU()
dtype = np.float32 # np.float16 or np.float32
X = 100 # Batch Size
N = 32 # Minibatch Size
C = 1536 # Input Features
K = 768 # Output Features
cpuI, cpuE, cpuW = setup_test_data(X, N, C, K, dtype)
ngO, ngB, ngU = run_batched_dot(ng, cpuI, cpuE, cpuW, X, dtype)
ncO, ncB, ncU = run_batched_dot(nc, cpuI, cpuE, cpuW, X, dtype)
npO, npB, npU = run_batched_dot(np, cpuI, cpuE, cpuW, X, dtype)
# set_trace()
assert_tensors_allclose(npO, ngO, rtol=0, atol=1e-3)
assert_tensors_allclose(npB, ngB, rtol=0, atol=1e-3)
assert_tensors_allclose(npU, ngU, rtol=0, atol=1e-3)
assert_tensors_allclose(npO, ncO, rtol=0, atol=1e-3)
assert_tensors_allclose(npB, ncB, rtol=0, atol=1e-3)
assert_tensors_allclose(npU, ncU, rtol=0, atol=1e-3)
ng.ctx.detach()
del(ng)
def test_cpu():
from neon.backends.nervanacpu import NervanaCPU
# ng = NervanaGPU()
nc = NervanaCPU()
# test_nms((ng, nc), (0.1, 5))
import datetime
time_old = datetime.datetime.now()
score = 4
box_count = 5
thre = 0.1
for i in range(10000):
dets = np.asarray(
[[1, 2, 3, 4, 0.6], [1, 3, 3, 4, 0.7], [1, 1, 4, 4, 0.9], [2, 1, 4, 4, 0.85], [1, 1, 3, 4, 0.85]],
dtype=np.float32)
print(dets)
dets[:, score] = np.sort(np.random.random((box_count,)))[::-1]
# call reference nms
keep_ref = py_cpu_nms(dets, thre)
# call cpu nms
# dets_nc = nc.array(dets)
# # tic_cpu = nc.init_mark()
# # toc_cpu = nc.init_mark()
# # nc.record_mark(tic_cpu)
#
# keep_nc = nc.nms(dets_nc, 0.1)
# print("keep_nc nms", keep_nc)
print('requests cpu', (datetime.datetime.now() - time_old).microseconds)
def compare_helper(op, inA, inB, dtype):
numpy_result = math_helper(np, op, inA, inB, dtype=np.float32)
if np.dtype(dtype).kind == 'i' or np.dtype(dtype).kind == 'u':
numpy_result = np.around(numpy_result)
numpy_result = numpy_result.clip(
np.iinfo(dtype).min, np.iinfo(dtype).max)
numpy_result = numpy_result.astype(dtype)
if dtype in (np.float32, np.float16):
gpu = NervanaGPU(default_dtype=dtype)
nervanaGPU_result = math_helper(gpu, op, inA, inB, dtype=dtype)
nervanaGPU_result = nervanaGPU_result.get()
np.allclose(numpy_result, nervanaGPU_result, rtol=0, atol=1e-5)
cpu = NervanaCPU(default_dtype=dtype)
nervanaCPU_result = math_helper(cpu, op, inA, inB, dtype=dtype)
nervanaCPU_result = nervanaCPU_result.get()
np.allclose(numpy_result, nervanaCPU_result, rtol=0, atol=1e-5)
def test_hist(nbin_offset_dim_dtype_inp):
"""
Compare the nervanagpu and nervanacpu hist implementation to the reference
implementation above.
Parameterized test case, uses pytest_generate_test to enumerate dim_dtype_inp
tuples that drive the test.
"""
(nbins, offset), dim, dtype, (name, inp_gen) = nbin_offset_dim_dtype_inp
ng = NervanaGPU(hist_bins=nbins, hist_offset=offset)
nc = NervanaCPU(hist_bins=nbins, hist_offset=offset)
np_inp = inp_gen(dim).astype(dtype)
np_hist = ref_hist(np_inp, nbins=nbins, offset=offset)
for be in [ng, nc]:
be_inp = be.array(np_inp, dtype=dtype)
be_hist = be_inp.hist(name)
assert_tensors_allclose(np_hist, be_hist)
def test_copy_transpose(shape_dtype_inp):
"""
Parameterized test case, uses pytest_generate_test to enumerate dim_dtype_inp
tuples that drive the test.
"""
shape, dtype, (name, inp_gen) = shape_dtype_inp
ng = NervanaGPU(default_dtype=dtype)
nc = NervanaCPU(default_dtype=dtype)
np_inp = inp_gen(shape).astype(dtype)
ndims = len(shape)
axes = [None] + list(itt.permutations(range(ndims), ndims))
axes.remove(tuple(range(ndims)))
for be, ax in itt.product([ng, nc], axes):
be_inp = be.array(np_inp, dtype=dtype)
np_trans = np.transpose(np_inp, axes=ax)
be_trans = be.zeros(np_trans.shape)
be.copy_transpose(be_inp, be_trans, axes=ax)
assert_tensors_allclose(np_trans, be_trans)
del (ng)
del (nc)
def test_edge_cases():
"""
Test several edge cases related to min/max bin, and rounding.
Also test backend dump_hist_data functionality.
"""
ng = NervanaGPU()
nc = NervanaCPU()
# edge case test
np_ref = dict()
inputs = [
("edges", np.array([2**-48, 2**15], dtype=np.float32)),
("rounding",
np.array(
[2**5, 63.99998856, 2**6, 2**-3, 2**-4, 0.11262291, 92.22483826],
dtype=np.float32)),
("fp16 rounding", np.array([45.21875], dtype=np.float16))
]
for tag, inp in inputs:
np_ref[tag] = ref_hist(inp)
for be in [ng, nc]:
be_inp = be.array(inp)
be_hist = be_inp.hist(tag)
assert_tensors_allclose(np_ref[tag],
be_hist,
err_msg=tag + str(be))
# dump_hist_data test
for be in [ng, nc]:
be_hist_data, be_hist_map = be.dump_hist_data()
for tag, inp in inputs:
be_data = be_hist_data[be_hist_map[tag]]
assert_tensors_allclose(np_ref[tag],
be_data,
err_msg=tag + str(be))
from neon.backends.convolution import (_ceil_div,
FpropCuda, BpropCuda, UpdateCuda,
FpropDirect, BpropDirect, UpdateDirect)
from neon.backends.winograd_conv import (
FpropWinograd_2x2_3x3, BpropWinograd_2x2_3x3, UpdateWinograd_3x3_2x2,
FpropWinograd_4x4_3x3, BpropWinograd_4x4_3x3, UpdateWinograd_3x3_4x4,
FpropWinograd_2x2_5x5, BpropWinograd_2x2_5x5)
fprop_kernels = (FpropCuda, FpropDirect, FpropWinograd_2x2_3x3, FpropWinograd_4x4_3x3, FpropWinograd_2x2_5x5)
bprop_kernels = (BpropCuda, BpropDirect, BpropWinograd_2x2_3x3, BpropWinograd_4x4_3x3, BpropWinograd_2x2_5x5)
update_kernels = (UpdateCuda, UpdateDirect, UpdateWinograd_3x3_2x2, UpdateWinograd_3x3_4x4)
ng = NervanaGPU(0)
nc = NervanaCPU()
neon_logger.display(drv.Context.get_current().get_device().name())
out = 0
ones = 0
# D, H, W, T, R, S, pad, str
conv_1x1 = ( 1, 14, 14, 1, 1, 1, 0,0,0, 1,1,1)
conv_3x3 = ( 1, 14, 14, 1, 3, 3, 0,1,1, 1,1,1)
conv_3x3p0 = ( 1, 14, 14, 1, 3, 3, 0,0,0, 1,1,1)
conv_3x3p2 = ( 1, 14, 14, 1, 3, 3, 0,2,2, 1,1,1)
conv_3x3s2 = ( 1, 14, 14, 1, 3, 3, 0,1,1, 1,2,2)
conv_1x3 = ( 1, 14, 14, 1, 1, 3, 0,0,1, 1,1,1)
conv_3x1 = ( 1, 14, 14, 1, 3, 1, 0,1,0, 1,1,1)
conv_5x5 = ( 1, 14, 14, 1, 5, 5, 0,2,2, 1,1,1)
def gen_backend(backend='cpu', rng_seed=None, datatype=np.float32,
batch_size=0, stochastic_round=False, device_id=0,
max_devices=get_device_count(), compat_mode=None):
"""
Construct and return a backend instance of the appropriate type based on
the arguments given. With no parameters, a single CPU core, float32
backend is returned.
Arguments:
backend (string, optional): 'cpu' or 'gpu'.
rng_seed (numeric, optional): Set this to a numeric value which can be used to seed the
random number generator of the instantiated backend.
Defaults to None, which doesn't explicitly seed (so each run
will be different)
dataype (dtype): Default tensor data type. CPU backend supports np.float64, np.float32 and
np.float16; GPU backend supports np.float32 and np.float16.
batch_size (int): Set the size the data batches.
stochastic_round (int/bool, optional): Set this to True or an integer to implent
stochastic rounding. If this is False rounding will
be to nearest. If True will perform stochastic
rounding using default bit width. If set to an
integer will round to that number of bits.
Only affects the gpu backend.
device_id (numeric, optional): Set this to a numeric value which can be used to select
device on which to run the process
max_devices (int, optional): For use with multi-GPU backend only.
Controls the maximum number of GPUs to run
on.
compat_mode (str, optional): if this is set to 'caffe' then the conv and pooling
layer output sizes will match that of caffe as will
the dropout layer implementation
Returns:
Backend: newly constructed backend instance of the specifed type.
Notes:
* Attempts to construct a GPU instance without a CUDA capable card or without nervanagpu
package installed will cause the program to display an error message and exit.
"""
logger = logging.getLogger(__name__)
if NervanaObject.be is not None:
# backend was already generated clean it up first
cleanup_backend()
else:
# at exit from python force cleanup of backend only register this function once, will use
# NervanaObject.be instead of a global
atexit.register(cleanup_backend)
if backend == 'cpu' or backend is None:
from neon.backends.nervanacpu import NervanaCPU
be = NervanaCPU(rng_seed=rng_seed, default_dtype=datatype, compat_mode=compat_mode)
elif backend == 'gpu' or backend == 'mgpu':
gpuflag = False
# check nvcc
from neon.backends.util import check_gpu
gpuflag = (check_gpu.get_compute_capability(device_id) >= 5.0)
if gpuflag is False:
raise RuntimeError("Device " + str(device_id) + " does not have CUDA compute " +
"capability 5.0 or greater")
if backend == 'gpu':
from neon.backends.nervanagpu import NervanaGPU
# init gpu
be = NervanaGPU(rng_seed=rng_seed, default_dtype=datatype,
stochastic_round=stochastic_round,
device_id=device_id,
compat_mode=compat_mode)
else:
try:
from mgpu.nervanamgpu import NervanaMGPU
# init multiple GPU
be = NervanaMGPU(rng_seed=rng_seed,
default_dtype=datatype,
stochastic_round=stochastic_round,
num_devices=max_devices)
except ImportError:
logger.error("Multi-GPU support is a premium feature "
"available exclusively through the Nervana cloud."
" Please contact [email protected] for details.")
raise
else:
raise ValueError("backend must be one of ('cpu', 'gpu', 'mgpu')")
logger.info("Backend: {}, RNG seed: {}".format(backend, rng_seed))
NervanaObject.be = be
be.bsz = batch_size
return be
dets_ng = ng.array(dets)
scores = dets_ng[:, 4].get()
order = scores.argsort()[::-1]
sorted_dets_dev = dets_ng[order, :]
tic_gpu = ng.init_mark()
toc_gpu = ng.init_mark()
# call through backend
ng.record_mark(tic_gpu)
keep_ng = ng.nms(sorted_dets_dev, thre)
ng.record_mark(toc_gpu)
ng.synchronize_mark(toc_gpu)
print("gpu NMS time (ms): {}".format(ng.get_time(tic_gpu, toc_gpu)))
assert keep_ng == keep_ref
if __name__ == '__main__':
from neon.backends.nervanagpu import NervanaGPU
from neon.backends.nervanacpu import NervanaCPU
ng = NervanaGPU()
nc = NervanaCPU()
test_nms((ng, nc), (0.7, 300))
def gen_backend(backend='cpu', rng_seed=None, default_dtype=np.float32,
batch_size=0, stochastic_round=False, device_id=0):
"""
Construct and return a backend instance of the appropriate type based on
the arguments given. With no parameters, a single CPU core, float32
backend is returned.
Arguments:
backend (string, optional): 'cpu' or 'gpu'.
rng_seed (numeric, optional): Set this to a numeric value which can be
used to seed the random number generator
of the instantiated backend. Defaults to
None, which doesn't explicitly seed (so
each run will be different)
default_dtype (dtype): Default tensor data type. CPU backend supports
np.float64, np.float32 and np.float16; GPU
backend supports np.float32 and np.float16.
batch_size (int): Set the size the data batches.
stochastic_round (int/bool, optional): Set this to True or an integer
to implent stochastic rounding.
If this is False rounding will
be to nearest.
If True will perform stochastic
rounding using default bit width.
If set to an integer will round
to that number of bits.
Only affects the gpu backend.
device_id (numeric, optional): Set this to a numeric value which can be
used to select which device to run the
process on
Returns:
Backend: newly constructed backend instance of the specifed type.
Notes:
* Attempts to construct a GPU instance without a CUDA capable card or
without nervanagpu package installed will cause the
program to display an error message and exit.
"""
logger = logging.getLogger(__name__)
if NervanaObject.be is not None:
# backend was already generated
# clean it up first
cleanup_backend()
else:
# at exit from python force cleanup of backend
# only register this function once, will use
# NervanaObject.be instead of a global
atexit.register(cleanup_backend)
if backend == 'cpu' or backend is None:
from neon.backends.nervanacpu import NervanaCPU
be = NervanaCPU(rng_seed=rng_seed, default_dtype=default_dtype)
elif backend == 'gpu':
gpuflag = False
# check nvcc
from neon.backends.util import check_gpu
gpuflag = (check_gpu.get_compute_capability(device_id) >= 5.0)
if gpuflag is False:
raise RuntimeError("Device " + str(device_id) + " does not have CUDA compute " +
"capability 5.0 or greater")
from neon.backends.nervanagpu import NervanaGPU
# init gpu
be = NervanaGPU(rng_seed=rng_seed, default_dtype=default_dtype,
stochastic_round=stochastic_round, device_id=device_id)
elif backend == 'mgpu':
raise NotImplementedError("mgpu will be ready soon")
else:
raise ValueError("backend must be one of "
"('cpu', 'gpu', 'mgpu')")
logger.info("Backend: {}, RNG seed: {}".format(backend, rng_seed))
NervanaObject.be = be
be.bsz = batch_size
return be
def get_backend_pair_mkl(device_id, dtype=np.float32, bench=False):
nm = NervanaMKL(default_dtype=dtype)
nc = NervanaCPU(default_dtype=dtype)
return (nm, nc)
from neon.backends.convolution import (_ceil_div,
FpropCuda, BpropCuda, UpdateCuda,
FpropDirect, BpropDirect, UpdateDirect)
from neon.backends.winograd_conv import (
FpropWinograd_2x2_3x3, BpropWinograd_2x2_3x3, UpdateWinograd_3x3_2x2,
FpropWinograd_4x4_3x3, BpropWinograd_4x4_3x3, UpdateWinograd_3x3_4x4,
FpropWinograd_2x2_5x5, BpropWinograd_2x2_5x5)
fprop_kernels = (FpropCuda, FpropDirect, FpropWinograd_2x2_3x3, FpropWinograd_4x4_3x3, FpropWinograd_2x2_5x5)
bprop_kernels = (BpropCuda, BpropDirect, BpropWinograd_2x2_3x3, BpropWinograd_4x4_3x3, BpropWinograd_2x2_5x5)
update_kernels = (UpdateCuda, UpdateDirect, UpdateWinograd_3x3_2x2, UpdateWinograd_3x3_4x4)
ng = NervanaGPU(0)
nc = NervanaCPU()
neon_logger.display(drv.Context.get_current().get_device().name())
out = 0
ones = 0
# D, H, W, T, R, S, pad, str
conv_1x1 = ( 1, 14, 14, 1, 1, 1, 0,0,0, 1,1,1)
conv_3x3 = ( 1, 14, 14, 1, 3, 3, 0,1,1, 1,1,1)
conv_3x3p0 = ( 1, 14, 14, 1, 3, 3, 0,0,0, 1,1,1)
conv_3x3p2 = ( 1, 14, 14, 1, 3, 3, 0,2,2, 1,1,1)
conv_3x3s2 = ( 1, 14, 14, 1, 3, 3, 0,1,1, 1,2,2)
conv_1x3 = ( 1, 14, 14, 1, 1, 3, 0,0,1, 1,1,1)
conv_3x1 = ( 1, 14, 14, 1, 3, 1, 0,1,0, 1,1,1)
conv_5x5 = ( 1, 14, 14, 1, 5, 5, 0,2,2, 1,1,1)
def test_conv_layer():
dtype = np.float32
ng = NervanaGPU(stochastic_round=False, bench=True)
nc = NervanaCPU()
N, C, K = 64, 64, 64
D, H, W = 1, 5, 5
T, R, S = 1, 3, 3
padding_d, padding_h, padding_w = 0, 1, 1
strides_d, strides_h, strides_w = 1, 1, 1
conv_ng = ng.conv_layer(dtype, N, C, K, D, H, W, T, R, S, padding_d,
padding_h, padding_w, strides_d, strides_h,
strides_w)
conv_nc = nc.conv_layer(dtype, N, C, K, D, H, W, T, R, S, padding_d,
padding_h, padding_w, strides_d, strides_h,
strides_w)
assert conv_nc.dimI == conv_ng.dimI
assert conv_nc.dimF == conv_ng.dimF
assert conv_nc.dimO == conv_ng.dimO
assert conv_nc.M == conv_ng.M
dimI = conv_ng.dimI
dimF = conv_ng.dimF
dimO = conv_ng.dimO
# cpu input arrays
cpuI = np.random.uniform(-0.8, 0.8, slicable(dimI, 1)).astype(np.float32)
cpuF = np.random.uniform(0.0, 0.3, slicable(dimF)).astype(np.float32)
cpuE = np.random.uniform(-0.2, 0.2, dimO).astype(np.float32)
# zero pad the last row of cpu input for the sake of numpy
cpuI[-1, :] = 0.0
# =======GPU and CPU==========
beI = cpuI[:-1, :].reshape(dimI)
beF = cpuF.reshape(dimF)
beE = cpuE
start_gpu = default_timer()
ngO, ngB, ngU = run_backend_conv(ng, conv_ng, beI, beF, beE, dtype)
end_gpu = default_timer()
start_cpu = default_timer()
ncO, ncB, ncU = run_backend_conv(nc, conv_nc, beI, beF, beE, dtype)
end_cpu = default_timer()
print("gputime: %s, cputime %s" %
(end_gpu - start_gpu, end_cpu - start_cpu))
# ======numpy===========
# cpu output arrays
cpuO = np.zeros(dimO, dtype=dtype)
cpuB = np.zeros(slicable(dimI, 1), dtype=dtype)
cpuU = np.zeros(slicable(dimF), dtype=dtype)
D, H, W = conv_nc.DHW
T, R, S = conv_nc.TRS
M, P, Q = conv_nc.MPQ
pad_d, pad_h, pad_w = conv_nc.padding
str_d, str_h, str_w = conv_nc.strides
for m in range(M):
mt = m * str_d - pad_d
for p in range(P):
pr = p * str_h - pad_h
for q in range(Q):
qs = q * str_w - pad_w
idx = pixel_indices(conv_nc, mt, pr, qs)
cpuO[:, m, p, q, :] = np.dot(cpuF.T, cpuI[idx, :])
cpuB[idx, :] += np.dot(cpuF, cpuE[:, m, p, q, :])
cpuU += np.dot(cpuI[idx, :], cpuE[:, m, p, q, :].T)
for op, ngA, ncA, cpuA, w in (("fprop", ngO, ncO, cpuO,
Q), ("bprop", ngB, ncB.reshape(dimI),
cpuB[:-1, :].reshape(dimI), W),
("update", ngU, ncU.reshape(dimF),
cpuU.reshape(dimF), S)):
print op
assert np.allclose(ngA.get(), cpuA, rtol=0, atol=1e-4)
assert np.allclose(ncA.get(), cpuA, rtol=0, atol=1e-5)
ng.ctx.detach()
del ng
def get_backend_pair(device_id, dtype=np.float32, bench=False):
from neon.backends.nervanagpu import NervanaGPU
ng = NervanaGPU(default_dtype=dtype, bench=bench, device_id=device_id)
nc = NervanaCPU(default_dtype=dtype)
return (ng, nc)
def gen_backend(backend='cpu',
rng_seed=None,
datatype=np.float32,
batch_size=0,
stochastic_round=False,
device_id=0,
max_devices=get_device_count(),
compat_mode=None,
deterministic_update=False,
deterministic=True):
"""
Construct and return a backend instance of the appropriate type based on
the arguments given. With no parameters, a single CPU core, float32
backend is returned.
Arguments:
backend (string, optional): 'cpu' or 'gpu'.
rng_seed (numeric, optional): Set this to a numeric value which can be used to seed the
random number generator of the instantiated backend.
Defaults to None, which doesn't explicitly seed (so each run
will be different)
dataype (dtype): Default tensor data type. CPU backend supports np.float64, np.float32 and
np.float16; GPU backend supports np.float32 and np.float16.
batch_size (int): Set the size the data batches.
stochastic_round (int/bool, optional): Set this to True or an integer to implent
stochastic rounding. If this is False rounding will
be to nearest. If True will perform stochastic
rounding using default bit width. If set to an
integer will round to that number of bits.
Only affects the gpu backend.
device_id (numeric, optional): Set this to a numeric value which can be used to select
device on which to run the process
max_devices (int, optional): For use with multi-GPU backend only.
Controls the maximum number of GPUs to run
on.
compat_mode (str, optional): if this is set to 'caffe' then the conv and pooling
layer output sizes will match that of caffe as will
the dropout layer implementation
deterministic (bool, optional): if set to true, all operations will be done deterministically.
Returns:
Backend: newly constructed backend instance of the specifed type.
Notes:
* Attempts to construct a GPU instance without a CUDA capable card or without nervanagpu
package installed will cause the program to display an error message and exit.
"""
logger = logging.getLogger(__name__)
if NervanaObject.be is not None:
# backend was already generated clean it up first
cleanup_backend()
else:
# at exit from python force cleanup of backend only register this function once, will use
# NervanaObject.be instead of a global
atexit.register(cleanup_backend)
if deterministic_update:
deterministic = True
logger.warning(
"--deterministic_update is deprecated in favor of --deterministic")
if backend == 'cpu' or backend is None:
from neon.backends.nervanacpu import NervanaCPU
be = NervanaCPU(rng_seed=rng_seed,
default_dtype=datatype,
compat_mode=compat_mode)
elif backend == 'gpu' or backend == 'mgpu':
gpuflag = False
# check nvcc
from neon.backends.util import check_gpu
gpuflag = (check_gpu.get_compute_capability(device_id) >= 3.0)
if gpuflag is False:
raise RuntimeError("Device " + str(device_id) +
" does not have CUDA compute " +
"capability 3.0 or greater")
if backend == 'gpu':
from neon.backends.nervanagpu import NervanaGPU
# init gpu
be = NervanaGPU(rng_seed=rng_seed,
default_dtype=datatype,
stochastic_round=stochastic_round,
device_id=device_id,
compat_mode=compat_mode,
deterministic=deterministic)
else:
try:
from mgpu.nervanamgpu import NervanaMGPU
# init multiple GPU
be = NervanaMGPU(rng_seed=rng_seed,
default_dtype=datatype,
stochastic_round=stochastic_round,
num_devices=max_devices,
compat_mode=compat_mode,
deterministic=deterministic)
except ImportError:
logger.error(
"Multi-GPU support is a premium feature "
"available exclusively through the Nervana cloud."
" Please contact [email protected] for details.")
raise
elif backend == 'argon':
from argon.neon_backend.ar_backend import ArBackend
be = ArBackend(rng_seed=rng_seed, default_dtype=datatype)
else:
raise ValueError("backend must be one of ('cpu', 'gpu', 'mgpu')")
logger.info("Backend: {}, RNG seed: {}".format(backend, rng_seed))
NervanaObject.be = be
be.bsz = batch_size
return be
def test_conv_layer(fargs_tests):
dtype = np.float32
ng = NervanaGPU(stochastic_round=False, bench=True)
N, C, K = fargs_tests[0]
D, H, W = fargs_tests[1]
T, R, S = fargs_tests[2]
padding_d, padding_h, padding_w = 0, 1, 1
strides_d, strides_h, strides_w = 1, 1, 1
conv_ng = ng.conv_layer(
dtype,
N, C, K,
D, H, W,
T, R, S,
padding_d, padding_h, padding_w,
strides_d, strides_h, strides_w)
nc = NervanaCPU()
conv_nc = nc.conv_layer(
dtype,
N, C, K,
D, H, W,
T, R, S,
padding_d, padding_h, padding_w,
strides_d, strides_h, strides_w)
assert conv_nc.dimI == conv_ng.dimI
assert conv_nc.dimF == conv_ng.dimF
assert conv_nc.dimO == conv_ng.dimO
assert conv_nc.M == conv_ng.M
dimI = conv_ng.dimI
dimF = conv_ng.dimF
dimO = conv_ng.dimO
# cpu input arrays
cpuI = np.random.uniform(-0.8, 0.8, slicable(dimI, 1)).astype(np.float32)
cpuF = np.random.uniform(0.0, 0.3, slicable(dimF)).astype(np.float32)
cpuE = np.random.uniform(-0.2, 0.2, dimO).astype(np.float32)
# zero pad the last row of cpu input for the sake of numpy
cpuI[-1, :] = 0.0
# =======GPU and CPU==========
beI = cpuI[:-1, :].reshape(dimI)
beF = cpuF.reshape(dimF)
beE = cpuE
start_gpu = default_timer()
ngO, ngB, ngU = run_backend_conv(ng, conv_ng, beI, beF, beE, dtype)
end_gpu = default_timer()
start_cpu = default_timer()
ncO, ncB, ncU = run_backend_conv(nc, conv_nc, beI, beF, beE, dtype)
end_cpu = default_timer()
print("gputime: %s, cputime %s" %
(end_gpu - start_gpu, end_cpu - start_cpu))
# ======numpy===========
# cpu output arrays
cpuO = np.zeros(dimO, dtype=dtype)
cpuB = np.zeros(slicable(dimI, 1), dtype=dtype)
cpuU = np.zeros(slicable(dimF), dtype=dtype)
D, H, W = conv_nc.DHW
T, R, S = conv_nc.TRS
M, P, Q = conv_nc.MPQ
pad_d, pad_h, pad_w = conv_nc.padding
str_d, str_h, str_w = conv_nc.strides
for m in range(M):
mt = m * str_d - pad_d
for p in range(P):
pr = p * str_h - pad_h
for q in range(Q):
qs = q * str_w - pad_w
idx = pixel_indices(conv_nc, mt, pr, qs)
cpuO[:, m, p, q, :] = np.dot(cpuF.T, cpuI[idx, :])
cpuB[idx, :] += np.dot(cpuF, cpuE[:, m, p, q, :])
cpuU += np.dot(cpuI[idx, :], cpuE[:, m, p, q, :].T)
for op, ngA, ncA, cpuA, w in (
("fprop", ngO, ncO, cpuO, Q),
("bprop", ngB, ncB.reshape(dimI), cpuB[:-1, :].reshape(dimI), W),
("update", ngU, ncU.reshape(dimF), cpuU.reshape(dimF), S)):
print(op)
assert np.allclose(ngA.get(), cpuA, rtol=0, atol=1e-4)
assert np.allclose(ncA.get(), cpuA, rtol=0, atol=1e-4)
del ng
del nc
def gen_backend(backend='cpu',
rng_seed=None,
default_dtype=np.float32,
batch_size=0,
stochastic_round=False,
device_id=0):
"""
Construct and return a backend instance of the appropriate type based on
the arguments given. With no parameters, a single CPU core, float32
backend is returned.
Arguments:
backend (string, optional): 'cpu' or 'gpu'.
rng_seed (numeric, optional): Set this to a numeric value which can be
used to seed the random number generator
of the instantiated backend. Defaults to
None, which doesn't explicitly seed (so
each run will be different)
default_dtype (dtype): Default tensor data type. CPU backend supports
np.float64, np.float32 and np.float16; GPU
backend supports np.float32 and np.float16.
batch_size (int): Set the size the data batches.
stochastic_round (int/bool, optional): Set this to True or an integer
to implent stochastic rounding.
If this is False rounding will
be to nearest.
If True will perform stochastic
rounding using default bit width.
If set to an integer will round
to that number of bits.
Only affects the gpu backend.
device_id (numeric, optional): Set this to a numeric value which can be
used to select which device to run the
process on
Returns:
Backend: newly constructed backend instance of the specifed type.
Notes:
* Attempts to construct a GPU instance without a CUDA capable card or
without nervanagpu package installed will cause the
program to display an error message and exit.
"""
logger = logging.getLogger(__name__)
if NervanaObject.be is not None:
# backend was already generated
# clean it up first
cleanup_backend()
else:
# at exit from python force cleanup of backend
# only register this function once, will use
# NervanaObject.be instead of a global
atexit.register(cleanup_backend)
if backend == 'cpu' or backend is None:
from neon.backends.nervanacpu import NervanaCPU
be = NervanaCPU(rng_seed=rng_seed, default_dtype=default_dtype)
elif backend == 'gpu':
gpuflag = False
# check nvcc
from neon.backends.util import check_gpu
gpuflag = (check_gpu.get_compute_capability(device_id) >= 5.0)
if gpuflag is False:
raise RuntimeError("Device " + str(device_id) +
" does not have CUDA compute " +
"capability 5.0 or greater")
from neon.backends.nervanagpu import NervanaGPU
# init gpu
be = NervanaGPU(rng_seed=rng_seed,
default_dtype=default_dtype,
stochastic_round=stochastic_round,
device_id=device_id)
elif backend == 'mgpu':
raise NotImplementedError("mgpu will be ready soon")
else:
raise ValueError("backend must be one of " "('cpu', 'gpu', 'mgpu')")
logger.info("Backend: {}, RNG seed: {}".format(backend, rng_seed))
NervanaObject.be = be
be.bsz = batch_size
return be
def setup(self):
self.gpu = NervanaGPU(stochastic_round=False)
self.cpu = NervanaCPU()
self.dims = (1024, 1024)
def test_pool_layer(poolargs):
op = poolargs[0]
dtype = np.float32
ng = NervanaGPU(stochastic_round=False, bench=True)
nc = NervanaCPU()
N, C = 32, 32
D, H, W = 1, 32, 32
J, T, R, S = 2, 1, 3, 3
padding_j, padding_d, padding_h, padding_w = 0, 0, 0, 0
strides_j, strides_d, strides_h, strides_w = 2, 1, 2, 2
# op = 'max'
pool_ng = ng.pool_layer(
dtype,
op,
N,
C, D, H, W,
J, T, R, S,
padding_j, padding_d, padding_h, padding_w,
strides_j, strides_d, strides_h, strides_w)
pool_nc = nc.pool_layer(
dtype,
op,
N,
C, D, H, W,
J, T, R, S,
padding_j, padding_d, padding_h, padding_w,
strides_j, strides_d, strides_h, strides_w)
assert pool_ng.dimI == pool_nc.dimI
assert pool_ng.dimO == pool_nc.dimO
dimI = pool_ng.dimI
dimO = pool_ng.dimO
# generating input arrays for inputs and errors
cpuI = np.random.uniform(0.0, 1.0, sliceable(dimI, 1)).astype(
np.float16).astype(dtype)
cpuE = np.random.uniform(-0.2, 0.2, dimO).astype(dtype)
# zero pad the last row of cpu input for the sake of numpy
if op == "max":
cpuI[-1, :] = np.finfo(dtype).min
else:
cpuI[-1, :] = 0
# =========GPU and CPU and numpy ==========
beI = cpuI[:-1, :].reshape(dimI)
beE = cpuE
ngO, ngB = run_backend_pool(ng, pool_ng, beI, beE, dtype)
ncO, ncB = run_backend_pool(nc, pool_nc, beI, beE, dtype)
cpuO, cpuB = run_numpy_pool(op, cpuI, cpuE, dtype, pool_ng)
for opA, ngA, ncA, cpuA in (
("fprop", ngO, ncO, cpuO),
("bprop", ngB, ncB.reshape(dimI), cpuB[:-1, :].reshape(dimI))):
print opA
assert np.allclose(ngA.get(), ncA.get(), rtol=0, atol=1e-4)
assert np.allclose(ncA.get(), cpuA, rtol=0, atol=1e-5)
del ng, nc
def test_conv_layer(fargs_tests, device_id):
dtype = np.float32
ng = NervanaGPU(stochastic_round=False, bench=True, device_id=device_id)
N, C, K = fargs_tests[0]
D, H, W = fargs_tests[1]
T, R, S = fargs_tests[2]
padding_d, padding_h, padding_w = fargs_tests[3]
strides_d, strides_h, strides_w = fargs_tests[4]
conv_ng = ng.conv_layer(dtype, N, C, K, D, H, W, T, R, S, padding_d,
padding_h, padding_w, strides_d, strides_h,
strides_w)
nc = NervanaCPU()
conv_nc = nc.conv_layer(dtype, N, C, K, D, H, W, T, R, S, padding_d,
padding_h, padding_w, strides_d, strides_h,
strides_w)
assert conv_nc.dimI == conv_ng.dimI
assert conv_nc.dimF == conv_ng.dimF
assert conv_nc.dimO == conv_ng.dimO
assert conv_nc.M == conv_ng.M
dimI = conv_ng.dimI
dimF = conv_ng.dimF
dimO = conv_ng.dimO
# cpu input arrays
cpuI = np.random.uniform(-0.8, 0.8, slicable(dimI, 1)).astype(np.float32)
cpuF = np.random.uniform(0.0, 0.3, slicable(dimF)).astype(np.float32)
cpuE = np.random.uniform(-0.2, 0.2, dimO).astype(np.float32)
# zero pad the last row of cpu input for the sake of numpy
cpuI[-1, :] = 0.0
# =======GPU and CPU==========
beI = cpuI[:-1, :].reshape(dimI)
beF = cpuF.reshape(dimF)
beE = cpuE
start_gpu = default_timer()
ngO, ngB, ngU = run_backend_conv(ng, conv_ng, beI, beF, beE, dtype)
end_gpu = default_timer()
start_cpu = default_timer()
ncO, ncB, ncU = run_backend_conv(nc, conv_nc, beI, beF, beE, dtype)
end_cpu = default_timer()
print("gputime: %s, cputime %s" %
(end_gpu - start_gpu, end_cpu - start_cpu))
# ======numpy===========
# cpu output arrays
cpuO = np.zeros(dimO, dtype=dtype)
cpuB = np.zeros(slicable(dimI, 1), dtype=dtype)
cpuU = np.zeros(slicable(dimF), dtype=dtype)
D, H, W = conv_nc.DHW
T, R, S = conv_nc.TRS
M, P, Q = conv_nc.MPQ
pad_d, pad_h, pad_w = conv_nc.padding
str_d, str_h, str_w = conv_nc.strides
for m in range(M):
mt = m * str_d - pad_d
for p in range(P):
pr = p * str_h - pad_h
for q in range(Q):
qs = q * str_w - pad_w
idx = pixel_indices(conv_nc, mt, pr, qs)
cpuO[:, m, p, q, :] = np.dot(cpuF.T, cpuI[idx, :])
cpuB[idx, :] += np.dot(cpuF, cpuE[:, m, p, q, :])
cpuU += np.dot(cpuI[idx, :], cpuE[:, m, p, q, :].T)
for op, ngA, ncA, cpuA, w in (("fprop", ngO, ncO, cpuO,
Q), ("bprop", ngB, ncB.reshape(dimI),
cpuB[:-1, :].reshape(dimI), W),
("update", ngU, ncU.reshape(dimF),
cpuU.reshape(dimF), S)):
print(op)
ncAnp = ncA.get().astype(np.float32)
ngAnp = ngA.get().astype(np.float32)
ncdif = cpuA - ncAnp
ngdif = cpuA - ngAnp
maxval = abs(cpuA).max()
ncmaxdif = abs(ncdif).max()
ngmaxdif = abs(ngdif).max()
ncRatio = ncmaxdif / maxval
ngRatio = ngmaxdif / maxval
assert ncRatio < 1e-5
assert ngRatio < 1e-5
assert allclose_with_out(ncA.get(), cpuA, rtol=0, atol=1e-4)
assert allclose_with_out(ngA.get(), cpuA, rtol=0, atol=1e-3)
del ng
del nc