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doc: Management system update, corrections

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architeuthis 2024-06-25 13:20:55 +08:00 committed by Sebastien Bourdeauducq
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1
doc/manual/developing_a_ndsp.rst
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@ -168,7 +168,6 @@ The program below exemplifies how to use logging: ::
if __name__ == "__main__":
main()
.. _ndsp-integeration:
Integration with ARTIQ experiments
----------------------------------

22
doc/manual/getting_started_mgmt.rst
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@ -3,7 +3,7 @@ Getting started with the management system
In practice, rather than managing experiments by executing ``artiq_run`` over and over, most use cases are better served by using the ARTIQ *management system.* This is the high-level part of ARTIQ, which can be used to schedule experiments, distribute and store the results, and manage devices and parameters. It possesses a detailed GUI, the ARTIQ dashboard, and can be used on several machines concurrently, communicating with each other and the ARTIQ core device over the network. Accordingly, multiple users on different machines can schedule experiments or retrieve results on the same ARTIQ system, potentially at the same time.
In practice, the management system consists of at least two parts: the ARTIQ master, which runs on a single machine, communicates directly with the core device, and is responsible for most of the actual duties of the system, and one or more ARTIQ clients, which may be local or remote and which communicate only with the master. As well as the dashboard GUI, a straightforward command line client is also provided.
The management system consists of at least two parts: the ARTIQ master, which runs on a single machine, facilitates communication with the core device, and is responsible for most of the actual duties of the system, and one or more ARTIQ clients, which may be local or remote and which communicate only with the master. As well as the dashboard GUI, a straightforward command line client is also provided.
In this tutorial, we will explore the basic operation of the management system. Because the management system only interfaces with the core device, rather than running on it, it is not actually necessary to have a core device set up or connected to follow these steps. Most of the examples in this tutorial can be carried out using only your computer.
@ -41,9 +41,6 @@ Now, start the dashboard with the following commands in another terminal: ::
$ cd ~
$ artiq_dashboard
.. note::
The ``artiq_dashboard`` program will generate and use a file called ``artiq_dashboard.pyon`` in the current directory to save and restore the GUI state (window/dock positions, last values entered by the user, etc.).
.. note::
In order to connect to a master over the network, start it with the command ::
@ -58,7 +55,7 @@ Now, start the dashboard with the following commands in another terminal: ::
The dashboard should display the list of experiments from the repository folder in a dock called "Explorer". There should be only the experiment we created. Select it and click "Submit", then look at the "Log" dock for the output from this simple experiment.
.. note::
.. seealso::
You may note that experiments may be submitted with a due date, a priority level, a pipeline identifier, and other specific settings. Some of these are self-explanatory. Many are scheduling-related. For more information on experiment scheduling, especially when submitting longer experiments or submitting across multiple users, see :ref:`experiment-scheduling`.
Adding an argument
@ -91,15 +88,15 @@ It is also possible to use interactive arguments, which may be requested and sup
pass
def run(self):
repeat = True;
while (repeat):
repeat = True
while repeat:
print("Hello World")
with self.interactive(title="Repeat or continue?") as interactive:
with self.interactive(title="Repeat?") as interactive:
interactive.setattr_argument("repeat", BooleanValue(True))
repeat = interactive.repeat
Trigger a repository rescan and click the button labeled "Recompute all arguments". Now submit the experiment. It should print once, then wait; in the same dock as "Explorer", find and navigate to the tab "Interactive Args". You can now choose and supply a value for the argument mid-experiment. Every time an argument is requested, the experiment pauses until the input is supplied. If you choose to "Cancel" intead, the experiment will raise an exception and stop.
Trigger a repository rescan and click the button labeled "Recompute all arguments". Now submit the experiment. It should print once, then wait; in the same dock as "Explorer", find and navigate to the tab "Interactive Args". You can now choose and supply a value for the argument mid-experiment. Every time an argument is requested, the experiment pauses until the input is supplied. If you choose to "Cancel" intead, the experiment will raise a :exc:`artiq.language.environment.CancelledArgsError` and halt.
While regular arguments are all requested simultaneously before submitting, interactive arguments can be requested at any point. In order to request multiple interactive arguments at once, place them within the same ``with`` block; see also the example ``interactive.py`` in the ``examples/no_hardware`` folder.
@ -219,7 +216,7 @@ The :ref:`rtio-analyzer-example` is fully integrated into the dashboard. Navigat
Non-RTIO devices and the controller manager
-------------------------------------------
As described in :ref:`artiq-real-time-i-o-concepts`, there are two classes of equipment a laboratory typically finds itself needing to operate. So far, we have largely discussed ARTIQ in terms of the second: the kind of specialized hardware that requires the very high-resolution timing control ARTIQ provides. The other class comprises the broad range of regular, "slow" laboratory devices, which do *not* require nanosecond precision and can generally be operated perfectly well from a regular PC over a non-realtime channel such as USB. ARTIQ also provisions for the control and management of these devices, and they can be incorporated into ARTIQ experiment code.
As described in :ref:`artiq-real-time-i-o-concepts`, there are two classes of equipment a laboratory typically finds itself needing to operate. So far, we have largely discussed ARTIQ in terms of the second: the kind of specialized hardware that requires the very high-resolution timing control ARTIQ provides. The other class comprises the broad range of regular, "slow" laboratory devices, which do *not* require nanosecond precision and can generally be operated perfectly well from a regular PC over a non-realtime channel such as USB. ARTIQ also provisions for the control and management of these devices, and they can be operated from ARTIQ experiment code.
No core device is necessary for these non-realtime operations. Accordingly, this side of ARTIQ can in fact be used perfectly well without any core device at all, if there is no actual realtime component to the experiments being run.
@ -231,6 +228,9 @@ To start the controller manager (the master must already be running, and artiq-c
Controllers may be run on a different machine from the master, or even on multiple different machines, alleviating cabling issues and OS compatibility problems. In this case, communication with the master happens over the network. If multiple machines are running controllers, they must each run their own controller manager. Use the ``-s`` and ``--bind`` flags of ``artiq_ctlmgr`` to set IP addresses or hostnames to connect and bind to.
.. warning::
With some network setups, the current machine's hostname without the domain name resolves to a localhost address (127.0.0.1 or even 127.0.1.1). If you wish to use controllers across a network, make sure that the hostname you provide resolves to an IP address visible on the network (e.g. try providing the full hostname including the domain name).
Note, however, that the controller for the particular device you are trying to connect to must first exist and be part of a complete Network Device Support Package, or NDSP. :doc:`Some NDSPs are already available <list_of_ndsps>`. If your device is not on this list, the system is designed to make it quite possible to write your own. For this, see the :doc:`developing_a_ndsp` page.
Once a device is correctly listed in ``device_db.py``, it can be added to an experiment using ``self.setattr_device([device_name])`` and the methods its API offers called straightforwardly as ``self.[device_name].[method_name]``. As long as the requisite controllers are running and available, the experiment can then be executed with ``artiq_run`` or through the management system.
@ -242,4 +242,4 @@ If (as is often the case) you intend to mostly operate your ARTIQ system and its
$ artiq_session
Arguments to the individuals (including ``-s`` and ``--bind``) can still be specificed using the ``-m``, ``-d`` and ``-c`` options respectively.
Arguments to the individuals (including ``-s`` and ``--bind``) can still be specified using the ``-m``, ``-d`` and ``-c`` options respectively.

16
doc/manual/management_system.rst
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@ -10,9 +10,9 @@ Components
Master
^^^^^^
The :ref:`ARTIQ master <frontend-artiq-master>` is responsible for managing the parameter and device databases, the experiment repository, scheduling and running experiments, archiving results, and distributing real-time results. It is a headless component, and one or several clients (command-line or GUI) use the network to interact with it. It also uses the network to interact with any relevant controller managers.
The :ref:`ARTIQ master <frontend-artiq-master>` is responsible for managing the parameter and device databases, the experiment repository, scheduling and running experiments, archiving results, and distributing real-time results. It is a headless component, and one or several clients (command-line or GUI) use the network to interact with it.
It should not be confused with the 'master' device in a DRTIO system, which is simply a designation for the particular core device acting as central node in a distributed configuration of ARTIQ. The two concepts are otherwise unrelated.
It should not be confused with the 'master' device in a DRTIO system, which is only a designation for the particular core device acting as central node in a distributed configuration of ARTIQ. The two concepts are otherwise unrelated.
Command-line client
^^^^^^^^^^^^^^^^^^^
@ -24,15 +24,15 @@ Dashboard
The :ref:`dashboard <frontend-artiq-dashboard>` connects to the master and is the main method of interacting with it. The main features of the dashboard are scheduling of experiments, setting of their arguments, examining the schedule, displaying real-time results, and debugging TTL and DDS channels in real time.
The dashboard remembers and restores GUI state (window/dock positions, last values entered by the user, etc.) in between instances. This information is stored in a file called ``artiq_dashboard_{server}_{port}.pyon`` in the configuration directory (e.g. generally ``~/.config/artiq`` for Unix, same as data directory for Windows), distinguished in subfolders by ARTIQ version.
Controller manager
^^^^^^^^^^^^^^^^^^
The controller manager is provided in the ``artiq-comtools`` package and started with the ``artiq_ctlmgr`` command. It is responsible for running and stopping controllers on a machine. One controller manager must be run by each network node that runs controllers.
The controller manager is provided in the ``artiq-comtools`` package (which is made available separately from mainline ARTIQ to allow independent use with minimal dependencies) and started with the ``artiq_ctlmgr`` command. It is responsible for running and stopping controllers on a machine. One controller manager must be run by each network node that runs controllers.
A controller manager connects to the master and accesses the device database through it to determine what controllrs need to be run. The local network address of the connection is used to filter for only those controllers allocated to the current node. Hostname resolution is supported. Changes to the device database are tracked and controllers will be stopped and started accordingly.
A controller manager connects to the master and accesses the device database through it to determine what controllers need to be run. The local network address of the connection is used to filter for only those controllers allocated to the current node. Hostname resolution is supported. Changes to the device database are tracked and controllers will be stopped and started accordingly.
.. warning::
With some network setups, the current machine's hostname without the domain name resolves to a localhost address (127.0.0.1 or even 127.0.1.1). If you wish to use controllers across a network, make sure that the hostname you provide resolves to an IP address visible on the network (e.g. try providing the full hostname including the domain name).
Git integration
---------------
@ -46,7 +46,7 @@ You will want Git to notify the master every time the repository is pushed to (e
.. note::
If you plan to run the ARTIQ system entirely on a single machine, you may also consider using a non-bare repository and the ``post-commit`` hook to trigger repository scans every time you commit changes (locally). In this case, note that the ARTIQ master never uses the repository's working directory, but only what is committed. More precisely, when scanning the repository, it fetches the last (atomically) completed commit at that time of repository scan and checks it out in a temporary folder. This commit ID is used by default when subsequently submitting experiments. There is one temporary folder by commit ID currently referenced in the system, so concurrently running experiments from different repository revisions is fully supported by the master.
The dashboard always runs experiments from the repository. By default the command-line client (``artiq_client submit``) runs experiments from the raw filesystem (which is useful for iterating rapidly without creating many disorganized commits). If you want to use the repository instead, simply pass the ``-R`` option.
By default, the dashboard runs experiments from the repository, whereas the command-line client (``artiq_client submit``) runs experiments from the raw filesystem (which is useful for iterating rapidly without creating many disorganized commits). In order to run from the raw filesystem when using the dashboard, right-click in the Explorer window and select the option "Open file outside repository"; in order to run from the repository when using the command-line client, simply pass the ``-R`` flag.
.. _experiment-scheduling:
@ -89,7 +89,7 @@ When determining what experiment should begin executing next (i.e. enter the pre
Multiple pipelines
^^^^^^^^^^^^^^^^^^
Experiments must be placed into a pipeline at submission time, set by the "Pipeline" field. Multiple pipelines can operate in parallel within the same master. Pipelines are identified by their names, and are automtically created (when an experiment is scheduled with a pipeline name that does not yet exist) and destroyed (when they run empty). By default, all experiments are submitted into the same pipeline, ``main``.
Experiments must be placed into a pipeline at submission time, set by the "Pipeline" field. The master supports multiple simultaneous pipelines, which will operate in parallel. Pipelines are identified by their names, and are automatically created (when an experiment is scheduled with a pipeline name that does not yet exist) and destroyed (when they run empty). By default, all experiments are submitted into the same pipeline, ``main``.
When using multiple pipelines it is the responsibility of the user to ensure that experiments scheduled in parallel will never conflict with those of another pipeline over resources (e.g. attempt to use the same devices simultaneously).