cirq.google.EngineProcessor

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A processor available via the Quantum Engine API.

View aliases

Main aliases

cirq.google.engine.EngineProcessor, cirq.google.engine.engine.engine_processor.EngineProcessor, cirq.google.engine.engine_processor.EngineProcessor

cirq.google.EngineProcessor(
    project_id: str,
    processor_id: str,
    context: "engine_base.EngineContext",
    _processor: Optional[qtypes.QuantumProcessor] = None
) -> None

Args
project_id	A project_id of the parent Google Cloud Project.
processor_id	Unique ID of the processor.
context	Engine configuration and context to use.
_processor	The optional current processor state.

Attributes
project_id	A project_id of the parent Google Cloud Project.
processor_id	Unique ID of the processor.

Methods

create_reservation

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create_reservation(
    start_time: datetime.datetime,
    end_time: datetime.datetime,
    whitelisted_users: Optional[List[str]] = None
)

Creates a reservation on this processor.

Args
start_time	the starting date/time of the reservation.
end_time	the ending date/time of the reservation.
whitelisted_users	a list of emails that are allowed to send programs during this reservation (in addition to users with permission "quantum.reservations.use" on the project).

engine

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engine() -> "engine_base.Engine"

Returns the parent Engine object.

Returns
The program's parent Engine.

expected_down_time

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expected_down_time() -> "Optional[datetime.datetime]"

Returns the start of the next expected down time of the processor, if set.

expected_recovery_time

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expected_recovery_time() -> "Optional[datetime.datetime]"

Returns the expected the processor should be available, if set.

get_calibration

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get_calibration(
    calibration_timestamp_seconds: int
) -> cirq.google.Calibration

Retrieve metadata about a specific calibration run.

Params:

• calibration_timestamp_seconds: The timestamp of the calibration in seconds since epoch.

Returns
The calibration data.

get_current_calibration

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get_current_calibration() -> Optional[cirq.google.Calibration]

Returns metadata about the current calibration for a processor.

Returns
The calibration data or None if there is no current calibration.

get_device

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get_device(
    gate_sets: Iterable[cirq.google.SerializableGateSet]
) -> "cirq.Device"

Returns a Device created from the processor's device specification.

This method queries the processor to retrieve the device specification, which is then use to create a SerializableDevice that will validate that operations are supported and use the correct qubits.

get_device_specification

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get_device_specification() -> Optional[cirq.google.api.v2.device_pb2.DeviceSpecification]

Returns a device specification proto for use in determining information about the device.

Returns
Device specification proto if present.

get_reservation

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get_reservation(
    reservation_id: str
)

Retrieve a reservation given its id.

get_schedule

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get_schedule(
    from_time: Union[None, datetime.datetime, datetime.timedelta] = datetime.timedelta(),
    to_time: Union[None, datetime.datetime, datetime.timedelta] = datetime.timedelta(weeks=2),
    time_slot_type: Optional[cirq.google.engine.client.quantum.enums.QuantumTimeSlot.TimeSlotType] = None
) -> List[cirq.google.EngineTimeSlot]

Retrieves the schedule for a processor.

The schedule may be filtered by time.

Time slot type will be supported in the future.

Args
from_time	Filters the returned schedule to only include entries that end no earlier than the given value. Specified either as an absolute time (datetime.datetime) or as a time relative to now (datetime.timedelta). Defaults to now (a relative time of 0). Set to None to omit this filter.
to_time	Filters the returned schedule to only include entries that start no later than the given value. Specified either as an absolute time (datetime.datetime) or as a time relative to now (datetime.timedelta). Defaults to two weeks from now (a relative time of two weeks). Set to None to omit this filter.
time_slot_type	Filters the returned schedule to only include entries with a given type (e.g. maintenance, open swim). Defaults to None. Set to None to omit this filter.

Returns
Schedule time slots.

health

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health() -> str

Returns the current health of processor.

list_calibrations

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list_calibrations(
    earliest_timestamp_seconds: Optional[int] = None,
    latest_timestamp_seconds: Optional[int] = None
) -> List[cirq.google.Calibration]

Retrieve metadata about a specific calibration run.

Params:

• earliest_timestamp_seconds: The earliest timestamp of a calibration to return in UTC.
• latest_timestamp_seconds: The latest timestamp of a calibration to return in UTC.

Returns
The list of calibration data with the most recent first.

list_reservations

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list_reservations(
    from_time: Union[None, datetime.datetime, datetime.timedelta] = datetime.timedelta(),
    to_time: Union[None, datetime.datetime, datetime.timedelta] = datetime.timedelta(weeks=2)
) -> List[cirq.google.EngineTimeSlot]

Retrieves the reservations from a processor.

Only reservations from this processor and project will be returned. The schedule may be filtered by starting and ending time.

Args
from_time	Filters the returned reservations to only include entries that end no earlier than the given value. Specified either as an absolute time (datetime.datetime) or as a time relative to now (datetime.timedelta). Defaults to now (a relative time of 0). Set to None to omit this filter.
to_time	Filters the returned reservations to only include entries that start no later than the given value. Specified either as an absolute time (datetime.datetime) or as a time relative to now (datetime.timedelta). Defaults to two weeks from now (a relative time of two weeks). Set to None to omit this filter.

Returns
A list of reservations.

remove_reservation

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remove_reservation(
    reservation_id: str
)

supported_languages

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supported_languages() -> List[str]

Returns the list of processor supported program languages.

update_reservation

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update_reservation(
    reservation_id: str,
    start_time: datetime.datetime = None,
    end_time: datetime.datetime = None,
    whitelisted_users: List[str] = None
)

Updates a reservation with new information.

Updates a reservation with a new start date, end date, or list of additional users. For each field, it the argument is left as None, it will not be updated.