Release notes¶

ARTIQ-4¶

4.0¶

The artiq.coredevice.ttl drivers no longer track the timestamps of submitted events in software, requiring the user to explicitly specify the timeout for count()/timestamp_mu(). Support for sync() has been dropped.

Now that RTIO has gained DMA support, there is no longer a reliable way for the kernel CPU to track the individual events submitted on any one channel. Requiring the timeouts to be specified explicitly ensures consistent API behavior. To make this more convenient, the TTLInOut.gate_*() functions now return the cursor position at the end of the gate, e.g.:
```
ttl_input.count(ttl_input.gate_rising(100 * us))
```
In most situations – that is, unless the timeline cursor is rewound after the respective gate_*() call – simply passing now_mu() is also a valid upgrade path:
```
ttl_input.count(now_mu())
```
The latter might use up more timeline slack than necessary, though.

In place of TTL(In)Out.sync, the new Core.wait_until_mu() method can be used, which blocks execution until the hardware RTIO cursor reaches the given timestamp:
```
ttl_output.pulse(10 * us)
self.core.wait_until_mu(now_mu())
```
RTIO outputs use a new architecture called Scalable Event Dispatcher (SED), which allows building systems with large number of RTIO channels more efficiently. From the user perspective, collision errors become asynchronous, and non- monotonic timestamps on any combination of channels are generally allowed (instead of producing sequence errors). RTIO inputs are not affected.
The DDS channel number for the NIST CLOCK target has changed.
The dashboard configuration files are now stored one-per-master, keyed by the server address argument and the notify port.
The master now has a --name argument. If given, the dashboard is labelled with this name rather than the server address.
artiq_flash targets Kasli by default. Use -t kc705 to flash a KC705 instead.
artiq_flash -m/--adapter has been changed to artiq_flash -V/--variant.
The proxy action of artiq_flash is determined automatically and should not be specified manually anymore.
kc705_dds has been renamed kc705.
The -H/--hw-adapter option of kc705 has been renamed -V/--variant.
SPI masters have been switched from misoc-spi to misoc-spi2. This affects all out-of-tree RTIO core device drivers using those buses. See the various commits on e.g. the ad53xx driver for an example how to port from the old to the new bus.
The ad5360 coredevice driver has been renamed to ad53xx and the API has changed to better support Zotino.
artiq.coredevice.dds has been renamed to artiq.coredevice.ad9914 and simplified. DDS batch mode is no longer supported. The core_dds device is no longer necessary.
The configuration entry startup_clock is renamed rtio_clock. Switching clocks dynamically (i.e. without device restart) is no longer supported.
set_dataset(..., save=True) has been renamed set_dataset(..., archive=True).
On the AD9914 DDS, when switching to PHASE_MODE_CONTINUOUS from another mode, use the returned value of the last set_mu call as the phase offset for PHASE_MODE_CONTINUOUS to avoid a phase discontinuity. This is no longer done automatically. If one phase glitch when entering PHASE_MODE_CONTINUOUS is not an issue, this recommendation can be ignored.

ARTIQ-3¶

3.7¶

No further notes.

3.6¶

No further notes.

3.5¶

No further notes.

3.4¶

No further notes.

3.3¶

No further notes.

3.2¶

To accommodate larger runtimes, the flash layout as changed. As a result, the contents of the flash storage will be lost when upgrading. Set the values back (IP, MAC address, startup kernel, etc.) after the upgrade.

3.1¶

No further notes.

3.0¶

The --embed option of applets is replaced with the environment variable ARTIQ_APPLET_EMBED. The GUI sets this enviroment variable itself and the user simply needs to remove the --embed argument.
EnvExperiment‘s prepare calls prepare for all its children.
Dynamic __getattr__‘s returning RPC target methods are not supported anymore. Controller driver classes must define all their methods intended for RPC as members.
Datasets requested by experiments are by default archived into their HDF5 output. If this behavior is undesirable, turn it off by passing archive=False to get_dataset.
seconds_to_mu and mu_to_seconds have become methods of the core device driver (use e.g. self.core.seconds_to_mu()).
AD9858 DDSes and NIST QC1 hardware are no longer supported.
The DDS class names and setup options have changed, this requires an update of the device database.
int(a, width=b) has been removed. Use int32(a) and int64(a).
The KC705 gateware target has been renamed kc705_dds.
artiq.coredevice.comm_tcp has been renamed artiq.coredevice.comm_kernel, and Comm has been renamed CommKernel.
The “collision” and “busy” RTIO errors are reported through the log instead of raising exceptions.
Results are still saved when analyze raises an exception.
LinearScan and RandomScan have been consolidated into RangeScan.
The Pipistrello is no longer supported. For a low-cost ARTIQ setup, use either ARTIQ 2.x with Pipistrello, or the future ARTIQ 4.x with Kasli. Note that the Pipistrello board has also been discontinued by the manufacturer but its design files are freely available.
The device database is now generated by an executable Python script. To migrate an existing database, add device_db = `` at the beginning, and replace any PYON identifiers (``true, null, ...) with their Python equivalents (True, None ...).
Controllers are now named aqctl_XXX instead of XXX_controller.
In the device database, the comm device has been folded into the core device. Move the “host” argument into the core device, and remove the comm device.
The core device log now contains important information about events such as RTIO collisions. A new controller aqctl_corelog must be running to forward those logs to the master. See the example device databases to see how to instantiate this controller. Using artiq_session ensures that a controller manager is running simultaneously with the master.
Experiments scheduled with the “flush pipeline” option now proceed when there are lower-priority experiments in the pipeline. Only experiments at the current (or higher) priority level are flushed.
The PDQ(2/3) driver has been removed and is now being maintained out-of tree at https://github.com/m-labs/pdq. All SPI/USB driver layers, Mediator, CompoundPDQ and examples/documentation has been moved.
The master now rotates log files at midnight, rather than based on log size.
The results keys start_time and run_time are now stored as doubles of UNIX time, rather than ints. The file names are still based on local time.
Packages are no longer available for 32-bit Windows.

ARTIQ-2¶

2.5¶

No further notes.

2.4¶

No further notes.

2.3¶

When using conda, add the conda-forge channel before installing ARTIQ.

2.2¶

No further notes.

2.1¶

No further notes.

2.0¶

No further notes.

2.0rc2¶

No further notes.

2.0rc1¶

The format of the influxdb pattern file is simplified. The procedure to edit patterns is also changed to modifying the pattern file and calling: artiq_rpctool.py ::1 3248 call scan_patterns (or restarting the bridge) The patterns can be converted to the new format using this code snippet:
```
from artiq.protocols import pyon
patterns = pyon.load_file("influxdb_patterns.pyon")
for p in patterns:
    print(p)
```
The “GUI” has been renamed the “dashboard”.
When flashing NIST boards, use “-m nist_qcX” or “-m nist_clock” instead of just “-m qcX” or “-m clock” (#290).
Applet command lines now use templates (e.g. $python) instead of formats (e.g. {python}).
On Windows, GUI applications no longer open a console. For debugging purposes, the console messages can still be displayed by running the GUI applications this way:
```
python3.5 -m artiq.frontend.artiq_browser
python3.5 -m artiq.frontend.artiq_dashboard
```
(you may need to replace python3.5 with python) Please always include the console output when reporting a GUI crash.
The result folders are formatted “%Y-%m-%d/%H instead of “%Y-%m-%d/%H-%M”. (i.e. grouping by day and then by hour, instead of by day and then by minute)
The parent keyword argument of HasEnvironment (and EnvExperiment) has been replaced. Pass the parent as first argument instead.
During experiment examination (and a fortiori repository scan), the values of all arguments are set to None regardless of any default values supplied.
In the dashboard’s experiment windows, partial or full argument recomputation takes into account the repository revision field.
By default, NumberValue and Scannable infer the scale from the unit for common units.
By default, artiq_client keeps the current persist flag on the master.
GUI state files for the browser and the dashboard are stores in “standard” locations for each operating system. Those are ~/.config/artiq/2/artiq_*.pyon on Linux and C:\Users\<username>\AppData\Local\m-labs\artiq\2\artiq_*.pyon on Windows 7.
The position of the time cursor is kept across experiments and RTIO resets are manual and explicit (inter-experiment seamless handover).
All integers manipulated by kernels are numpy integers (numpy.int32, numpy.int64). If you pass an integer as a RPC argument, the target function receives a numpy type.

ARTIQ-1¶

1.3¶

No further notes.

1.2¶

No further notes.

1.1¶

TCA6424A.set converts the “outputs” value to little-endian before programming it into the registers.

1.0¶

No further notes.

1.0rc4¶

setattr_argument and setattr_device add their key to kernel_invariants.

1.0rc3¶

The HDF5 format has changed.
- The datasets are located in the HDF5 subgroup datasets.
- Datasets are now stored without additional type conversions and annotations from ARTIQ, trusting that h5py maps and converts types between HDF5 and python/numpy “as expected”.
NumberValue now returns an integer if ndecimals = 0, scale = 1 and step is integer.

1.0rc2¶

The CPU speed in the pipistrello gateware has been reduced from 83 1/3 MHz to 75 MHz. This will reduce the achievable sustained pulse rate and latency accordingly. ISE was intermittently failing to meet timing (#341).
set_dataset in broadcast mode no longer returns a Notifier. Mutating datasets should be done with mutate_dataset instead (#345).

1.0rc1¶

Experiments (your code) should use from artiq.experiment import * (and not from artiq import * as previously)
Core device flash storage has moved due to increased runtime size. This requires reflashing the runtime and the flash storage filesystem image or erase and rewrite its entries.
RTIOCollisionError has been renamed to RTIOCollision
the new API for DDS batches is:
```
with self.core_dds.batch:
   ...
```
with core_dds a device of type artiq.coredevice.dds.CoreDDS. The dds_bus device should not be used anymore.
LinearScan now supports scanning from high to low. Accordingly, its arguments min/max have been renamed to start/stop respectively. Same for RandomScan (even though there direction matters little).