def characterize(args, adcs, seed):
with misc.push_random_state():
np.random.seed(seed)
seeds = [np.random.randint(0, 4294967296) for _ in range(3)]
assert not args.relative_snr_ref, "TODO implement relative"
assert not args.relative_snr_thres, "TODO implement relative"
min_snr_ref_v = args.min_snr_ref_v
min_snr_thres_v = args.min_snr_thres_v
fsr = adcs[0].stages[0].meta.fsr
n_bits = int(np.sum([np.floor(stage.meta.n_bits) for stage in adcs[0].stages]))
n_bits += int(gen.infer_thres_bits(adcs[0].tail)[0])
lsb = gen.compute_lsb(n_bits, *fsr)
if min_snr_ref_v is None:
min_snr_ref_v = lsb/2
if min_snr_thres_v is None:
min_snr_thres_v = lsb/2
snr_ref_inv = np.linspace(0, min_snr_ref_v, args.samples_snr_ref)
snr_thres_inv = np.linspace(0, min_snr_thres_v, args.samples_snr_thres)
snr_ref = np.power((fsr[1] - fsr[0]), 2)/np.power(snr_ref_inv, 2)
snr_thres = np.power((fsr[1] - fsr[0]), 2)/np.power(snr_thres_inv, 2)
snr_ref[0] = 0
snr_thres[0] = 0
real_thres_s = data.at_least_ndarray(args.real_thres_s)
shape = (np.size(real_thres_s), np.size(adcs),)
adcs_sweep = np.tile(np.array(adcs, dtype=object), shape[:-1] + (1,))
# Sweep thres
with misc.push_random_state():
np.random.seed(seed)
for idx in cartesian(*tuple(range(s) for s in shape)):
r_thres_s = real_thres_s[idx[0]]
adcs_sweep[idx] = copy.deepcopy(adcs_sweep[idx])
for stage in adcs_sweep[idx].stages:
r_thres_s_local = r_thres_s * stage.meta.lsb
stage._thres = np.random.normal(stage.thres, r_thres_s_local)
adcs_sweep[idx]._tail = np.random.normal(adcs_sweep[idx].tail, r_thres_s)
uncertain = characterize_uncertanty(args, adcs_sweep, seed, real_thres_s)
ref = characterize_noise(args, adcs_sweep, seed, snr_ref, real_thres_s, ref=True)
thres = characterize_noise(args, adcs_sweep, seed, snr_thres, real_thres_s, ref=False)
return uncertain, ref, thres
def system(self,
x,
scalar=False,
use_bands=None,
sum_conf=None,
limit_samples=None,
lsb_scale=1):
if scalar:
x = [x]
cm, eff, caps, refs, thres, ins = self._map_internal(x)
ext_codes = self._codes[:, np.newaxis, ...]
if not hasattr(self, "_cache"):
self._cache = {}
base_shape = np.shape(x)[:-1]
if base_shape not in self._cache:
print("Generating cache for {}".format(base_shape))
self._cache[base_shape] = self.recreate_cache(
eff, caps, refs, thres, ins, cm, self._configuration_sequence,
ext_codes)
use_bands = default(use_bands, self.use_bands)
sum_conf = default(sum_conf, self.sum_conf)
ext_codes = self._codes[:, np.newaxis, ...]
u = self.recreate(eff,
caps,
refs,
thres,
ins,
cm,
self._configuration_sequence,
self._cache[base_shape],
limit_samples=limit_samples)
meta = self._configuration_sequence.meta
# Ignore last u since it is not converted to code
u = np.diff(u[:-1, :,
...], axis=-1) if meta.differential else u[:-1, :, ...,
-1]
samples = np.size(u, 0)
u_center, lsb = self._compute_u_center(thres)
thres_bits, thres_half = gen.infer_thres_bits(thres[0, ...])
ideal_lsb = gen.compute_lsb(thres_bits, *self._start.meta.fsr,
thres_half)
lsb = lsb + ideal_lsb * (lsb_scale - 1) if use_bands else np.zeros((
samples,
1,
1,
))
result = np.maximum(
np.abs(u - u_center[:samples, ...]) - lsb[:samples, ...] / 2, 0)
if DEBUG: # FIXME
import matplotlib.pyplot as plots
try:
print(np.shape(result))
sum_axis = tuple(range(len(np.shape(result)) - 1))
cut = (np.sum(result, axis=sum_axis) > 0).tolist().index(True)
print("Found cut {}".format(cut))
except:
cut = 10
print("Not found cut")
x_thres = np.stack((
np.zeros_like(thres[0, :]),
np.full_like(thres[0, :], samples),
),
axis=0)
y_thres = np.stack((thres[0, :], ) * 2, axis=0)
plots.plot(x_thres, y_thres, c='orange', linestyle='-.')
plots.plot(u[:, 0, cut, ...], 'r')
internal, _ = self.configuration_sequence.configuration_sets[
0].generate_in(self.configuration_sequence.
configuration_sets[0].ds_samples)
internal = np.sum(internal, axis=(
-2,
-1,
))
plots.plot(0.25 * (internal[:, cut, ...] - 1.5), 'cyan')
#plots.plot(internal[:samples, cut, ...], 'k')
adj_codes = (0.5 /
(np.max(self._codes))) * (self._codes -
np.max(self._codes) / 2)
plots.plot(adj_codes[:samples, cut, ...], 'k')
plots.plot(u_center[:samples, 0, cut, ...], 'b')
plots.plot(u_center[:samples, 0, cut, ...] +
lsb[:samples, 0, cut, ...] / 2,
'g',
linestyle='--')
plots.plot(u_center[:samples, 0, cut, ...] -
lsb[:samples, 0, cut, ...] / 2,
'g',
linestyle='--')
plots.show()
if scalar:
result = result[:, 0, ...]
else:
result = np.transpose(result, (
1,
0,
) + tuple(range(2, len(np.shape(result)))))
sum_axis = (
-2,
-1,
) if sum_conf else (-2, )
result = np.sum(result, axis=sum_axis)
if PRINT_ERROR:
print("System error: {}".format(np.sum(np.power(result, 2))))
return result
def run(args):
assert len(args.bits) == len(args.seed)
directory = args.location
mkdir(misc.Namespace(directory=directory, mode="750"))
path_context = data.PathContext.relative()
names = [
"paper_set_{}{}".format(ii, "_DRY" if DRY_RUN else "")
for ii in range(len(args.bits))
]
if not JUST_PLOT:
for ii, bits, seed, name in zip(count(), args.bits, args.seed, names):
print("SET {}/{}".format(ii + 1, len(args.bits)))
adcs = gen_adc(bits, seed, args, args.n_adcs)
uncertain, ref, thres = characterize(args, adcs, seed)
if 0 in TESTS:
uncertain = prepickle_data(uncertain, path_context, directory,
"{}.{}".format(name, "uncertain"))
else:
uncertain = None
if 1 in TESTS:
ref = prepickle_data(ref, path_context, directory,
"{}.{}".format(name, "ref"))
else:
ref = None
if 2 in TESTS:
thres = prepickle_data(thres, path_context, directory,
"{}.{}".format(name, "thres"))
else:
thres = None
with open(name, 'wb') as f:
pickle.dump((
uncertain,
ref,
thres,
),
f,
protocol=pickle.HIGHEST_PROTOCOL)
for name in names:
with open(name, 'rb') as f:
dat = pickle.load(f)
uncertain, ref, thres = dat
uncertain = postpickle_data(uncertain, path_context)
ref = postpickle_data(ref, path_context)
thres = postpickle_data(thres, path_context)
dat = (
uncertain,
ref,
thres,
)
real_thres_s = data.at_least_ndarray(args.real_thres_s)
sample_adc = dat[TESTS[0]][0][0, 0, 0]
fsr = sample_adc.stages[0].meta.fsr
n_bits = int(
np.sum([
np.floor(stage.meta.n_bits) for stage in sample_adc.stages
]))
n_bits += int(gen.infer_thres_bits(sample_adc.tail)[0])
lsb = gen.compute_lsb(n_bits, *fsr)
min_snr_ref_v = args.min_snr_ref_v
min_snr_thres_v = args.min_snr_thres_v
if min_snr_ref_v is None:
min_snr_ref_v = lsb / 2
if min_snr_thres_v is None:
min_snr_thres_v = lsb / 2
snr_ref_inv = np.linspace(0, min_snr_ref_v, args.samples_snr_ref)
snr_thres_inv = np.linspace(0, min_snr_thres_v,
args.samples_snr_thres)
u_args = (
"{}.uncertain".format(name),
uncertain,
(
"Real threshold voltage standard deviation (LSB)",
"Modeled std (LSB)",
),
)
u_kwargs = {"x_axes": real_thres_s, "y_axes": real_thres_s}
t_args = (
"{}.thres".format(name),
thres,
(
"Real threshold voltage standard deviation (LSB)",
"Thres. noise (SNR)",
),
)
t_kwargs = {
"x_axes": real_thres_s,
"y_axes": snr_thres_inv,
"noise": True
}
r_args = (
"{}.ref".format(name),
ref,
(
"Real threshold voltage standard deviation (LSB)",
"Ref. noise (SNR)",
),
)
r_kwargs = {
"x_axes": real_thres_s,
"y_axes": snr_ref_inv,
"noise": True
}
if TOGETHER:
f = plots.figure(figsize=(
10,
4,
) if FULL_SIZE else (
5 * 1.5,
2 * 1.5,
))
ax = f.add_subplot(111)
h0 = []
h1 = []
h2 = []
brightness = 1
if 0 in TESTS:
f, ax, h0 = plot2d(*u_args,
**u_kwargs,
ax=ax,
color=(brightness, 0, 0),
first_black=True,
index=0,
legend_handlers=h0,
hide_constants=False)
h0 = reversed(h0)
if 2 in TESTS:
f, ax, h2 = plot2d(*t_args,
**t_kwargs,
ax=ax,
color=(0, 0, brightness),
first_black=None,
index=2,
legend_handlers=h2)
h2 = reversed(h2)
if 1 in TESTS:
f, ax, h1 = plot2d(*r_args,
**r_kwargs,
ax=ax,
color=(0, brightness, 0),
first_black=None,
index=1,
legend_handlers=h1)
h1 = reversed(h1)
h = []
for hh in (h0, h1, h2):
h.extend(hh)
proportion = 0.65
box = ax.get_position()
ax.set_position(
[box.x0, box.y0, box.width * proportion, box.height])
ax.set_facecolor((0.85, ) * 3)
legend_handlers = h
paths, names = tuple(zip(*legend_handlers))
f.legend(paths,
names,
loc='center left',
bbox_to_anchor=(proportion, 0.5))
prev = mpl.rcParams['hatch.linewidth']
mpl.rcParams['hatch.linewidth'] = 5.0
f.savefig("{}.png".format(name), dpi=300)
plots.show()
mpl.rcParams['hatch.linewidth'] = prev
else:
if 0 in TESTS:
plot2d(*u_args,
**u_kwargs,
color=(0.8, 0, 1),
hide_constants=False)
if 1 in TESTS:
plot2d(*r_args,
**r_kwargs,
color=(0.8, 0, 1),
hide_constants=False)
if 2 in TESTS:
plot2d(*t_args,
**t_kwargs,
color=(0.8, 0, 1),
hide_constants=False)
print("DONE")
def bits_to_required_eff(n_bits, half_bit=None, lsb_req=0.5):
lsb = gen.compute_lsb(n_bits, 0, 1, half_bit=half_bit)
eff = 1 - lsb * lsb_req
return eff
# Generation args
args.bits = [[3.5, 3.5, 2.5, 4]]
# args.bits = [4.5, 3.5, 3.5, 4]
args.seed = [486582]
args.s_cap = 0.0025
args.s_ref = None
# Characterization args
args.real_thres_s = np.linspace(0, 0.5 / 3, SAMPLES) # In lsb
args.confidence = 0.95
args.n_adcs = N_FOR_STD
args.min_snr_ref_v = gen.compute_lsb(8, 0, 1) / 2
args.min_snr_thres_v = gen.compute_lsb(8, 0, 1) / 2
args.samples_snr_ref = SAMPLES_REF
args.samples_snr_thres = SAMPLES_THRES
args.relative_snr_ref = False
args.relative_snr_thres = False
# Configuration args
args.samples = [64]
args.inputs = "random"
args.ic = "precharge"
args.full = False
args.loop = 1