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from artiq.experiment import *
import numpy as np
class Benchmark(EnvExperiment):
def build(self):
self.setattr_device("core")
self.dds = self.get_device("urukul0_ch0")
@kernel
def bisect_underflow(self, f, t_max_mu=1000, t_min_mu=0):
t = 0
while (t_max_mu-t_min_mu) > 2:
t = np.int64( (t_max_mu+t_min_mu)/2 )
print(np.int32(t_min_mu), np.int32(t_max_mu))
try:
f(t)
except RTIOUnderflow:
print("Underflow")
if t == t_max_mu:
raise ValueError("Upper bound underflowed")
t_min_mu = t
else:
t_max_mu = t
return t
@kernel
def dds_update_rate(self):
t=0
def f(t):
self.core.reset()
for i in range(1000):
with parallel:
delay_mu(t)
self.dds.set(80*MHz, amplitude=0.1, phase=0.5)
t = self.bisect_underflow(lambda t: f(t), t_max_mu=50000)
print("Sustained DDS update time: ", np.int32(t), "mu")
@kernel
def dds_setmu_update_rate(self):
t=0
def f(t):
f_mu = self.dds.frequency_to_ftw(80*MHz)
amp_mu = self.dds.amplitude_to_asf(0.1)
phase_mu = self.dds.turns_to_pow(0.5)
self.core.reset()
for i in range(1000):
with parallel:
delay_mu(t)
self.dds.set_mu(f_mu, asf=amp_mu, pow=phase_mu)
t = self.bisect_underflow(lambda t: f(t), t_max_mu=50000)
print("Sustained DDS set_mu update time: ", np.int32(t), "mu")
@kernel
def measure_dds_timeline_advance(self):
self.core.break_realtime()
t0 = now_mu()
self.dds.set(80*MHz, amplitude=0.1, phase=0.5)
dt = now_mu()-t0
core_log("DDS timeline advance:", np.int32(dt), "mu")
@kernel
def run(self):
self.core.reset()
self.dds.cpld.init(blind=True)
self.dds.init(blind=True)
# self.measure_dds_timeline_advance()
self.dds_update_rate()
# self.dds_setmu_update_rate()