def classify(self, epsilon):
print("\n -- Classification ", end='')
start = int(round(time.time() * 100))
with inaccel.allocator:
self.predictions = np.ndarray((self.NUM_REQUESTS, self.chunkSize),
dtype=np.int32)
responses = []
for n in range(0, self.NUM_REQUESTS):
req = inaccel.request("com.inaccel.ml.NaiveBayes.Classifier")
req.arg(self.features.reshape(self.NUM_REQUESTS, self.chunkSize * self.numFeaturesPadded)[n][:]) \
.arg(self.means) \
.arg(self.variances) \
.arg(self.priors) \
.arg(self.predictions[n][:]) \
.arg(np.float32(epsilon)) \
.arg(np.int32(self.numClasses)) \
.arg(np.int32(self.numFeatures)) \
.arg(np.int32(self.chunkSize))
responses.append(inaccel.submit(req))
for n in range(0, self.NUM_REQUESTS):
responses[n].result()
end = int(round(time.time() * 100))
print("took: " + str((end - start) / 100) + "s")
def _submit_(self, input):
if not inaccel.allocator.handles(input) or input.dtype != np.int8:
with inaccel.allocator:
input = np.array(input, dtype=np.int8)
n = np.uint32(len(input))
with inaccel.allocator:
output = np.ndarray((n, 5), dtype=np.uint16)
mobilenet = inaccel.request("xilinx.com.researchlabs.mobilenet")
mobilenet.arg(input).arg(output).arg(n)
return {
'in': input,
'out': output,
'numReps': n,
'_': inaccel.submit(mobilenet)
}
def _submit_(self, input):
if not inaccel.allocator.handles(input) or input.dtype != np.int8:
with inaccel.allocator:
input = np.array(input, dtype=np.int8)
n = np.uint32(len(input))
with inaccel.allocator:
output = np.ndarray((n, 5), dtype=np.uint16)
resnet50 = inaccel.request("xilinx.com.researchlabs.resnet50")
resnet50.arg(input).arg(output).arg(self.model).arg(n)
return {
'in': input,
'out': output,
'weightsmem': self.model,
'numReps': n,
'_': inaccel.submit(resnet50)
}
def classify(self, epsilon):
print("\n -- Classification ", end='')
start = int(round(time.time() * 100))
self.predictions = []
for i in range(0, self.NUM_REQUESTS):
self.predictions.append(
inaccel.ndarray(self.chunkSize, dtype=np.int32))
for n in range(0, self.NUM_REQUESTS):
self._priors[n][:] = self.priors[:]
for k in range(0, self.numClasses):
idx = k * self.numFeaturesPadded
self._means[n][idx:idx + self.numFeatures] = self.means[k][:]
self._variances[n][idx:idx +
self.numFeatures] = self.variances[k][:]
sessions = []
for n in range(0, self.NUM_REQUESTS):
req = inaccel.request("com.inaccel.ml.NaiveBayes.Classifier")
req.arg(self.features[n]).arg(self._means[n]).arg(
self._variances[n]).arg(self._priors[n]).arg(
self.predictions[n]).arg(np.float32(epsilon)).arg(
np.int32(self.numClasses)).arg(
np.int32(self.numFeatures)).arg(
np.int32(self.chunkSize))
sessions.append(inaccel.submit(req))
for n in range(0, self.NUM_REQUESTS):
inaccel.wait(sessions[n])
end = int(round(time.time() * 100))
print("took: " + str((end - start) / 100) + "s")
import inaccel.coral as inaccel
import numpy as np
size = np.int32(1024)
with inaccel.allocator:
a = np.ndarray(size, dtype=np.float32)
b = np.ndarray(size, dtype=np.float32)
c = np.ndarray(size, dtype=np.float32)
# ...
request = inaccel.request('vector.addition')
request.arg(a).arg(b).arg(c).arg(size)
print(request)
response = inaccel.submit(request)
response.result()
# ...
def binary_price(*,
volatilities,
strikes,
expiries,
spots=None,
forwards=None,
discount_factors=None,
is_call_options=None,
dtype=None,
name=None):
"""Computes the Black Scholes price for a batch of binary call or put options.
The binary call (resp. put) option priced here is that which pays off a unit
of cash if the underlying asset has a value greater (resp. smaller) than the
strike price at expiry. Hence the binary option price is the discounted
probability that the asset will end up higher (resp. lower) than the
strike price at expiry.
#### Example
```python
# Price a batch of 5 binary call options.
volatilities = np.array([0.0001, 102.0, 2.0, 0.1, 0.4])
forwards = np.array([1.0, 2.0, 3.0, 4.0, 5.0])
# Strikes will automatically be broadcasted to shape [5].
strikes = np.array([3.0])
# Expiries will be broadcast to shape [5], i.e. each option has strike=3
# and expiry = 1.
expiries = 1.0
computed_prices = tff.black_scholes.binary_price(
volatilities=volatilities,
strikes=strikes,
expiries=expiries,
forwards=forwards)
# Expected print output of prices:
# [0. 0. 0.15865525 0.99764937 0.85927418]
```
#### References:
[1] Hull, John C., Options, Futures and Other Derivatives. Pearson, 2018.
[2] Wikipedia contributors. Binary option. Available at:
https://en.wikipedia.org/w/index.php?title=Binary_option
Args:
volatilities: Real `Tensor` of any shape and dtype. The volatilities to
expiry of the options to price.
strikes: A real `Tensor` of the same dtype and compatible shape as
`volatilities`. The strikes of the options to be priced.
expiries: A real `Tensor` of same dtype and compatible shape as
`volatilities`. The expiry of each option. The units should be such that
`expiry * volatility**2` is dimensionless.
spots: A real `Tensor` of any shape that broadcasts to the shape of the
`volatilities`. The current spot price of the underlying. Either this
argument or the `forwards` (but not both) must be supplied.
forwards: A real `Tensor` of any shape that broadcasts to the shape of
`volatilities`. The forwards to maturity. Either this argument or the
`spots` must be supplied but both must not be supplied.
discount_factors: An optional real `Tensor` of same dtype as the
`volatilities`. If not None, these are the discount factors to expiry
(i.e. e^(-rT)). If None, no discounting is applied (i.e. the undiscounted
option price is returned). If `spots` is supplied and `discount_factors`
is not None then this is also used to compute the forwards to expiry.
Default value: None, equivalent to discount factors = 1.
is_call_options: A boolean `Tensor` of a shape compatible with
`volatilities`. Indicates whether the option is a call (if True) or a put
(if False). If not supplied, call options are assumed.
dtype: Optional `tf.DType`. If supplied, the dtype to be used for conversion
of any supplied non-`Tensor` arguments to `Tensor`.
Default value: None which maps to the default dtype inferred by TensorFlow
(float32).
name: str. The name for the ops created by this function.
Default value: None which is mapped to the default name `binary_price`.
Returns:
binary_prices: A `Tensor` of the same shape as `forwards`. The Black
Scholes price of the binary options.
Raises:
ValueError: If both `forwards` and `spots` are supplied or if neither is
supplied.
"""
if (spots is None) == (forwards is None):
raise ValueError(
'Either spots or forwards must be supplied but not both.')
if (dtype is not None) and (np.dtype(dtype) != np.float32):
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
size = np.int32(1)
volatilities = asinaccel(volatilities, np.float32, 1)
size = np.maximum(size, volatilities.size, dtype=np.int32)
strikes = asinaccel(strikes, np.float32, 1)
size = np.maximum(size, strikes.size, dtype=np.int32)
expiries = asinaccel(expiries, np.float32, 1)
size = np.maximum(size, expiries.size, dtype=np.int32)
if forwards is not None:
forwards = asinaccel(forwards, np.float32, 1)
size = np.maximum(size, forwards.size, dtype=np.int32)
else:
spots = asinaccel(spots, np.float32, 1)
size = np.maximum(size, spots.size, dtype=np.int32)
if discount_factors is not None:
discount_factors = asinaccel(discount_factors, np.float32, 1)
size = np.maximum(size, discount_factors.size, dtype=np.int32)
if is_call_options is not None:
is_call_options = asinaccel(is_call_options, np.bool, 1)
size = np.maximum(size, is_call_options.size, dtype=np.int32)
if volatilities.size == 1:
tmp = volatilities[0]
volatilities = ndinaccel(size, dtype=np.float32)
volatilities.fill(tmp)
elif volatilities.size != size:
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
if strikes.size == 1:
tmp = strikes[0]
strikes = ndinaccel(size, dtype=np.float32)
strikes.fill(tmp)
elif strikes.size != size:
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
if expiries.size == 1:
tmp = expiries[0]
expiries = ndinaccel(size, dtype=np.float32)
expiries.fill(tmp)
elif expiries.size != size:
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
if forwards is not None:
if forwards.size == 1:
tmp = forwards[0]
forwards = ndinaccel(size, dtype=np.float32)
forwards.fill(tmp)
elif forwards.size != size:
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
else:
if spots.size == 1:
tmp = spots[0]
spots = ndinaccel(size, dtype=np.float32)
spots.fill(tmp)
elif spots.size != size:
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
if discount_factors is None:
discount_factors = ndinaccel(size, dtype=np.float32)
discount_factors.fill(1.0)
else:
if discount_factors.size == 1:
tmp = discount_factors[0]
discount_factors = ndinaccel(size, dtype=np.float32)
discount_factors.fill(tmp)
elif discount_factors.size != size:
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
if is_call_options is None:
is_call_options = ndinaccel(size, dtype=np.bool)
is_call_options.fill(True)
else:
if is_call_options.size == 1:
tmp = is_call_options[0]
is_call_options = ndinaccel(size, dtype=np.bool)
is_call_options.fill(tmp)
elif is_call_options.size != size:
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
binary_price = ndinaccel(size, dtype=np.float32)
try:
request = inaccel.request(
'com.inaccel.quantitativeFinance.blackScholes.binary-price')
if (forwards is not None):
request.arg(forwards)
request.arg(np.int32(False))
else:
request.arg(spots)
request.arg(np.int32(True))
request.arg(strikes)
request.arg(expiries)
request.arg(discount_factors)
request.arg(volatilities)
request.arg(is_call_options)
request.arg(size)
request.arg(binary_price)
inaccel.submit(request).result()
return tf.convert_to_tensor(binary_price,
name=(name or 'binary_price'))
except:
return binary_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_factors=discount_factors,
is_call_options=is_call_options,
dtype=dtype,
name=name)
def option_price(*,
volatilities,
strikes,
expiries,
spots=None,
forwards=None,
discount_rates=None,
continuous_dividends=None,
cost_of_carries=None,
discount_factors=None,
is_call_options=None,
is_normal_volatility=False,
dtype=None,
name=None):
"""Computes the Black Scholes price for a batch of call or put options.
#### Example
```python
# Price a batch of 5 vanilla call options.
volatilities = np.array([0.0001, 102.0, 2.0, 0.1, 0.4])
forwards = np.array([1.0, 2.0, 3.0, 4.0, 5.0])
# Strikes will automatically be broadcasted to shape [5].
strikes = np.array([3.0])
# Expiries will be broadcast to shape [5], i.e. each option has strike=3
# and expiry = 1.
expiries = 1.0
computed_prices = tff.black_scholes.option_price(
volatilities=volatilities,
strikes=strikes,
expiries=expiries,
forwards=forwards)
# Expected print output of computed prices:
# [ 0. 2. 2.04806848 1.00020297 2.07303131]
```
#### References:
[1] Hull, John C., Options, Futures and Other Derivatives. Pearson, 2018.
[2] Wikipedia contributors. Black-Scholes model. Available at:
https://en.wikipedia.org/w/index.php?title=Black%E2%80%93Scholes_model
Args:
volatilities: Real `Tensor` of any shape and dtype. The volatilities to
expiry of the options to price.
strikes: A real `Tensor` of the same dtype and compatible shape as
`volatilities`. The strikes of the options to be priced.
expiries: A real `Tensor` of same dtype and compatible shape as
`volatilities`. The expiry of each option. The units should be such that
`expiry * volatility**2` is dimensionless.
spots: A real `Tensor` of any shape that broadcasts to the shape of the
`volatilities`. The current spot price of the underlying. Either this
argument or the `forwards` (but not both) must be supplied.
forwards: A real `Tensor` of any shape that broadcasts to the shape of
`volatilities`. The forwards to maturity. Either this argument or the
`spots` must be supplied but both must not be supplied.
discount_rates: An optional real `Tensor` of same dtype as the
`volatilities` and of the shape that broadcasts with `volatilities`.
If not `None`, discount factors are calculated as e^(-rT),
where r are the discount rates, or risk free rates. At most one of
discount_rates and discount_factors can be supplied.
Default value: `None`, equivalent to r = 0 and discount factors = 1 when
discount_factors also not given.
continuous_dividends: An optional real `Tensor` of same dtype as the
`volatilities` and of the shape that broadcasts with `volatilities`.
If not `None`, `cost_of_carries` is calculated as r - q,
where r are the `discount_rates` and q is `continuous_dividends`. Either
this or `cost_of_carries` can be given.
Default value: `None`, equivalent to q = 0.
cost_of_carries: An optional real `Tensor` of same dtype as the
`volatilities` and of the shape that broadcasts with `volatilities`.
Cost of storing a physical commodity, the cost of interest paid when
long, or the opportunity cost, or the cost of paying dividends when short.
If not `None`, and `spots` is supplied, used to calculate forwards from
`spots`: F = e^(bT) * S, where F is the forwards price, b is the cost of
carries, T is expiries and S is the spot price. If `None`, value assumed
to be equal to the `discount_rate` - `continuous_dividends`
Default value: `None`, equivalent to b = r.
discount_factors: An optional real `Tensor` of same dtype as the
`volatilities`. If not `None`, these are the discount factors to expiry
(i.e. e^(-rT)). Mutually exclusive with discount_rate and cost_of_carry.
If neither is given, no discounting is applied (i.e. the undiscounted
option price is returned). If `spots` is supplied and `discount_factors`
is not `None` then this is also used to compute the forwards to expiry.
At most one of discount_rates and discount_factors can be supplied.
Default value: `None`, which maps to -log(discount_factors) / expiries
is_call_options: A boolean `Tensor` of a shape compatible with
`volatilities`. Indicates whether the option is a call (if True) or a put
(if False). If not supplied, call options are assumed.
is_normal_volatility: An optional Python boolean specifying whether the
`volatilities` correspond to lognormal Black volatility (if False) or
normal Black volatility (if True).
Default value: False, which corresponds to lognormal volatility.
dtype: Optional `tf.DType`. If supplied, the dtype to be used for conversion
of any supplied non-`Tensor` arguments to `Tensor`.
Default value: `None` which maps to the default dtype inferred by
TensorFlow.
name: str. The name for the ops created by this function.
Default value: `None` which is mapped to the default name `option_price`.
Returns:
option_prices: A `Tensor` of the same shape as `forwards`. The Black
Scholes price of the options.
Raises:
ValueError: If both `forwards` and `spots` are supplied or if neither is
supplied.
ValueError: If both `discount_rates` and `discount_factors` is supplied.
ValueError: If both `continuous_dividends` and `cost_of_carries` is
supplied.
"""
if (spots is None) == (forwards is None):
raise ValueError(
'Either spots or forwards must be supplied but not both.')
if (discount_rates is not None) and (discount_factors is not None):
raise ValueError(
'At most one of discount_rates and discount_factors may '
'be supplied')
if (continuous_dividends is not None) and (cost_of_carries is not None):
raise ValueError(
'At most one of continuous_dividends and cost_of_carries '
'may be supplied')
if is_normal_volatility:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
if (dtype is not None) and (np.dtype(dtype) != np.float32):
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
size = np.int32(1)
volatilities = asinaccel(volatilities, np.float32, 1)
size = np.maximum(size, volatilities.size, dtype=np.int32)
strikes = asinaccel(strikes, np.float32, 1)
size = np.maximum(size, strikes.size, dtype=np.int32)
expiries = asinaccel(expiries, np.float32, 1)
size = np.maximum(size, expiries.size, dtype=np.int32)
if forwards is not None:
forwards = asinaccel(forwards, np.float32, 1)
size = np.maximum(size, forwards.size, dtype=np.int32)
else:
spots = asinaccel(spots, np.float32, 1)
size = np.maximum(size, spots.size, dtype=np.int32)
if discount_factors is not None:
discount_factors = asinaccel(discount_factors, np.float32, 1)
size = np.maximum(size, discount_factors.size, dtype=np.int32)
elif discount_rates is not None:
discount_rates = asinaccel(discount_rates, np.float32, 1)
size = np.maximum(size, discount_rates.size, dtype=np.int32)
if cost_of_carries is not None:
cost_of_carries = asinaccel(cost_of_carries, np.float32, 1)
size = np.maximum(size, cost_of_carries.size, dtype=np.int32)
elif continuous_dividends is not None:
continuous_dividends = asinaccel(continuous_dividends, np.float32, 1)
size = np.maximum(size, continuous_dividends.size, dtype=np.int32)
if is_call_options is not None:
is_call_options = asinaccel(is_call_options, np.bool, 1)
size = np.maximum(size, is_call_options.size, dtype=np.int32)
if volatilities.size == 1:
tmp = volatilities[0]
volatilities = ndinaccel(size, dtype=np.float32)
volatilities.fill(tmp)
elif volatilities.size != size:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
if strikes.size == 1:
tmp = strikes[0]
strikes = ndinaccel(size, dtype=np.float32)
strikes.fill(tmp)
elif strikes.size != size:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
if expiries.size == 1:
tmp = expiries[0]
expiries = ndinaccel(size, dtype=np.float32)
expiries.fill(tmp)
elif expiries.size != size:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
if forwards is not None:
if forwards.size == 1:
tmp = forwards[0]
forwards = ndinaccel(size, dtype=np.float32)
forwards.fill(tmp)
elif not forwards.size == size:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
else:
if spots.size == 1:
tmp = spots[0]
spots = ndinaccel(size, dtype=np.float32)
spots.fill(tmp)
elif not spots.size == size:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
if cost_of_carries is None:
if discount_rates is None:
if discount_factors is not None:
discount_rates = -np.log(discount_factors) / expiries
else:
discount_rates = np.ndarray(size, dtype=np.float32)
discount_rates.fill(0.0)
if continuous_dividends is None:
continuous_dividends = np.ndarray(size, dtype=np.float32)
continuous_dividends.fill(0.0)
cost_of_carries = asinaccel(discount_rates - continuous_dividends,
dtype=np.float32)
else:
if cost_of_carries.size == 1:
tmp = cost_of_carries[0]
cost_of_carries = ndinaccel(size, dtype=np.float32)
cost_of_carries.fill(tmp)
elif not cost_of_carries.size == size:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
if discount_factors is None:
if discount_rates is not None:
discount_factors = asinaccel(np.exp(discount_rates * expiries),
dtype=np.float32)
else:
discount_factors = ndinaccel(size, dtype=np.float32)
discount_factors.fill(1.0)
else:
if discount_factors.size == 1:
tmp = discount_factors[0]
discount_factors = ndinaccel(size, dtype=np.float32)
discount_factors.fill(tmp)
elif not discount_factors.size == size:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
if is_call_options is None:
is_call_options = ndinaccel(size, dtype=np.bool)
is_call_options.fill(True)
else:
if is_call_options.size == 1:
tmp = is_call_options[0]
is_call_options = ndinaccel(size, dtype=np.bool)
is_call_options.fill(tmp)
elif is_call_options.size != size:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
option_price = ndinaccel(size, dtype=np.float32)
try:
request = inaccel.request(
'com.inaccel.quantitativeFinance.blackScholes.option-price')
if (forwards is not None):
request.arg(forwards)
request.arg(np.int32(False))
else:
request.arg(spots)
request.arg(np.int32(True))
request.arg(cost_of_carries)
request.arg(strikes)
request.arg(expiries)
request.arg(discount_factors)
request.arg(volatilities)
request.arg(is_call_options)
request.arg(size)
request.arg(option_price)
inaccel.submit(request).result()
return tf.convert_to_tensor(option_price,
name=(name or 'option_price'))
except:
return option_price_ref(volatilities=volatilities,
strikes=strikes,
expiries=expiries,
spots=spots,
forwards=forwards,
discount_rates=discount_rates,
continuous_dividends=continuous_dividends,
cost_of_carries=cost_of_carries,
discount_factors=discount_factors,
is_call_options=is_call_options,
is_normal_volatility=is_normal_volatility,
dtype=dtype,
name=name)
import numpy as np
import inaccel.coral as inaccel
if __name__== "__main__":
size = np.int32(1024 * 1024)
# Allocate four vectors & Initialize input vectors with random values
a = inaccel.array(np.random.rand(size), dtype = np.float32)
b = inaccel.array(np.random.rand(size), dtype = np.float32)
c_add = inaccel.ndarray(size, dtype = np.float32)
c_sub = inaccel.ndarray(size, dtype = np.float32)
# Send a request for "addition" accelerator to the Coral FPGA Resource Manager
# Request arguments must comply with the accelerator's specific argument list
vadd = inaccel.request("com.inaccel.math.vector.addition")
vadd.arg(a).arg(b).arg(c_add).arg(size)
inaccel.wait(inaccel.submit(vadd))
# Send a request for "subtraction" accelerator to the Coral FPGA Resource Manager
# Request arguments must comply with the accelerator's specific argument list
vsub = inaccel.request("com.inaccel.math.vector.subtraction")
vsub.arg(a).arg(b).arg(c_sub).arg(size)
inaccel.wait(inaccel.submit(vsub))
# Check output vectors
valid = True
if not np.array_equal(c_add, a + b):
valid = False