Interaction with urukul causes hanging

mcgarc

Dear all,

We have been having some trouble with one of our Artiq 7 Sinara systems. It seems that whenever we intereact with our urukuls Artiq will hang (that is, the script will run but never complete). I have used aqrti_coremgmt to examine the log, however it only states that the kernel is initialised.

This behaviour is reproduced on our setup by the minimal example experiment script below.

`from artiq.experiment import *
import numpy as np

class AddDatasets(EnvExperiment):
def build(self):
self.setattr_device("core")
self.setattr_device("urukul1_ch0")

@kernel
def run(self):
    self.core.reset()`

Has anyone run into anything like this before? We are unsure how best to proceed in debugging this. Thank you for your help.

mcgarc

See also the relevant device_db entries for reference.

`device_db["eeprom_urukul0"] = {
"type": "local",
"module": "artiq.coredevice.kasli_i2c",
"class": "KasliEEPROM",
"arguments": {"port": "EEM3"}
}

device_db["spi_urukul0"] = {
"type": "local",
"module": "artiq.coredevice.spi2",
"class": "SPIMaster",
"arguments": {"channel": 0x010018}
}

device_db["ttl_urukul0_io_update"] = {
"type": "local",
"module": "artiq.coredevice.ttl",
"class": "TTLOut",
"arguments": {"channel": 0x010019}
}

device_db["ttl_urukul0_sw0"] = {
"type": "local",
"module": "artiq.coredevice.ttl",
"class": "TTLOut",
"arguments": {"channel": 0x01001a}
}

device_db["urukul0_cpld"] = {
"type": "local",
"module": "artiq.coredevice.urukul",
"class": "CPLD",
"arguments": {
"spi_device": "spi_urukul0",
"sync_device": None,
"io_update_device": "ttl_urukul0_io_update",
"refclk": 1_000_000_000.0,
"clk_sel": 1,
"clk_div": 1
}
}

device_db["urukul0_ch0"] = {
"type": "local",
"module": "artiq.coredevice.ad9910",
"class": "AD9910",
"arguments": {
"pll_en": 0,
#"pll_n": 32,
"chip_select": 4,
"cpld_device": "urukul0_cpld",
"sw_device": "ttl_urukul0_sw0"
}
`

dpn

Could you edit your post(s) to fix the code blocks? If your above example ends in self.core.reset(), there doesn't seem to be any interaction with Urukul at all.

mcgarc

Hi @dpn , I don't appear to be able to edit the posts (edit: although I see the button to edit this one, it doesn't appear for the older ones). Sorry for messing up the code blocks.

Indeed, I accidentally omitted the last line of my experiment. It should be as below.

Regardless, after power cycling the device we have been unable to observe this behaviour again. Not sure what caused this but as we can't reproduce, I'm unable to investigate further.

from artiq.experiment import *
import numpy as np

class AddDatasets(EnvExperiment):
def build(self):
self.setattr_device("core")
self.setattr_device("urukul1_ch0")

@kernel
def run(self):
    self.core.reset()
    self.urukul1_ch0.init()