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nac3/nac3artiq/demo/min_artiq.py

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from inspect import getfullargspec
from functools import wraps
from types import SimpleNamespace
from numpy import int32, int64
from typing import Generic, TypeVar
import nac3artiq
__all__ = ["KernelInvariant", "extern", "kernel", "portable", "nac3",
"ms", "us", "ns",
"Core", "TTLOut", "parallel", "sequential"]
T = TypeVar('T')
class KernelInvariant(Generic[T]):
pass
import device_db
core_arguments = device_db.device_db["core"]["arguments"]
compiler = nac3artiq.NAC3(core_arguments["target"])
allow_registration = True
# Delay NAC3 analysis until all referenced variables are supposed to exist on the CPython side.
registered_functions = set()
registered_classes = set()
def register_function(fun):
assert allow_registration
registered_functions.add(fun)
def register_class(cls):
assert allow_registration
registered_classes.add(cls)
def extern(function):
"""Decorates a function declaration defined by the core device runtime."""
register_function(function)
return function
def kernel(function_or_method):
"""Decorates a function or method to be executed on the core device."""
register_function(function_or_method)
argspec = getfullargspec(function_or_method)
if argspec.args and argspec.args[0] == "self":
@wraps(function_or_method)
def run_on_core(self, *args, **kwargs):
fake_method = SimpleNamespace(__self__=self, __name__=function_or_method.__name__)
self.core.run(fake_method, *args, **kwargs)
else:
@wraps(function_or_method)
def run_on_core(*args, **kwargs):
raise RuntimeError("Kernel functions need explicit core.run()")
return run_on_core
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def portable(function):
"""Decorates a function or method to be executed on the same device (host/core device) as the caller."""
register_function(function)
return function
def nac3(cls):
"""
Decorates a class to be analyzed by NAC3.
All classes containing kernels or portable methods must use this decorator.
"""
register_class(cls)
return cls
ms = 1e-3
us = 1e-6
ns = 1e-9
@extern
def rtio_init():
raise NotImplementedError("syscall not simulated")
@extern
def rtio_get_counter() -> int64:
raise NotImplementedError("syscall not simulated")
@extern
def rtio_output(target: int32, data: int32):
raise NotImplementedError("syscall not simulated")
@extern
def rtio_input_timestamp(timeout_mu: int64, channel: int32) -> int64:
raise NotImplementedError("syscall not simulated")
@extern
def rtio_input_data(channel: int32) -> int32:
raise NotImplementedError("syscall not simulated")
@nac3
class Core:
ref_period: KernelInvariant[float]
def __init__(self):
self.ref_period = core_arguments["ref_period"]
def run(self, method, *args, **kwargs):
global allow_registration
if allow_registration:
compiler.analyze(registered_functions, registered_classes)
allow_registration = False
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if hasattr(method, "__self__"):
obj = method.__self__
name = method.__name__
else:
obj = method
name = ""
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compiler.compile_method_to_file(obj, name, args, "module.elf")
@kernel
def reset(self):
rtio_init()
at_mu(rtio_get_counter() + int64(125000))
@kernel
def break_realtime(self):
min_now = rtio_get_counter() + int64(125000)
if now_mu() < min_now:
at_mu(min_now)
@portable
def seconds_to_mu(self, seconds: float) -> int64:
return int64(round(seconds/self.ref_period))
@portable
def mu_to_seconds(self, mu: int64) -> float:
return float(mu)*self.ref_period
@kernel
def delay(self, dt: float):
delay_mu(self.seconds_to_mu(dt))
@nac3
class TTLOut:
core: KernelInvariant[Core]
channel: KernelInvariant[int32]
target_o: KernelInvariant[int32]
def __init__(self, core: Core, channel: int32):
self.core = core
self.channel = channel
self.target_o = channel << 8
@kernel
def output(self):
pass
@kernel
def set_o(self, o: bool):
rtio_output(self.target_o, 1 if o else 0)
@kernel
def on(self):
self.set_o(True)
@kernel
def off(self):
self.set_o(False)
@kernel
def pulse_mu(self, duration: int64):
self.on()
delay_mu(duration)
self.off()
@kernel
def pulse(self, duration: float):
self.on()
self.core.delay(duration)
self.off()
@nac3
class KernelContextManager:
@kernel
def __enter__(self):
pass
@kernel
def __exit__(self):
pass
parallel = KernelContextManager()
sequential = KernelContextManager()