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Merged
virajvchaudhari merged 2 commits into from
Jun 26, 2026
Merged

depr: tn1 retirement #1307

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4e1e74a
depr: tn1 retirement
rmshaffer Jun 25, 2026
1fd5cf6
Merge branch 'main' into rmshaffer/tn1-retirement
rmshaffer Jun 25, 2026
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2 changes: 1 addition & 1 deletion src/braket/devices/devices.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@
class Devices:
class _Amazon(StrEnum):
SV1 = "arn:aws:braket:::device/quantum-simulator/amazon/sv1"
TN1 = "arn:aws:braket:::device/quantum-simulator/amazon/tn1"
_TN1 = "arn:aws:braket:::device/quantum-simulator/amazon/tn1"

@laurencap laurencap Jun 25, 2026

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Why private rather than removed?

@rmshaffer rmshaffer Jun 25, 2026

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This is currently the pattern for all retired devices in this file. The idea is that this would prevent retired devices from showing up in API docs or IDE autocomplete, but still keep a visible record in case users were relying on it. Open to other suggestions though; probably we shouldn't just accumulate these forever.

DM1 = "arn:aws:braket:::device/quantum-simulator/amazon/dm1"

class _AQT(StrEnum):
Expand Down
3 changes: 0 additions & 3 deletions src/braket/tracking/tracker.py
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Expand Up @@ -266,9 +266,6 @@ def _get_simulator_task_cost(task_arn: str, details: dict) -> Decimal:
else:
product_family = "Simulator Task"
operation = "CompleteTask"
if details["status"] == "FAILED" and device_name == "TN1":
# Rehearsal step of TN1 can fail and charges still apply.
operation = "FailedTask"

search_dict = {
"Region Code": task_region,
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3 changes: 1 addition & 2 deletions test/integ_tests/conftest.py
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Expand Up @@ -25,8 +25,7 @@

SV1_ARN = "arn:aws:braket:::device/quantum-simulator/amazon/sv1"
DM1_ARN = "arn:aws:braket:::device/quantum-simulator/amazon/dm1"
TN1_ARN = "arn:aws:braket:::device/quantum-simulator/amazon/tn1"
SIMULATOR_ARNS = [SV1_ARN, DM1_ARN, TN1_ARN]
SIMULATOR_ARNS = [SV1_ARN, DM1_ARN]

job_complete_name = "".join(random.choices(string.ascii_lowercase + string.digits, k=12))
job_fail_name = "".join(random.choices(string.ascii_lowercase + string.digits, k=12))
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92 changes: 0 additions & 92 deletions test/integ_tests/test_tensor_network_simulator.py
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This file was deleted.

1 change: 0 additions & 1 deletion test/unit_tests/braket/aws/common_test_utils.py
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Expand Up @@ -22,7 +22,6 @@
OQC_ARN = "arn:aws:braket:eu-west-2::device/qpu/oqc/Lucy"
SV1_ARN = "arn:aws:braket:::device/quantum-simulator/amazon/sv1"
DM1_ARN = "arn:aws:braket:::device/quantum-simulator/amazon/dm1"
TN1_ARN = "arn:aws:braket:::device/quantum-simulator/amazon/tn1"
XANADU_ARN = "arn:aws:braket:us-east-1::device/qpu/xanadu/Borealis"

RIGETTI_REGION = "us-west-1"
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9 changes: 4 additions & 5 deletions test/unit_tests/braket/aws/test_aws_device.py
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Expand Up @@ -32,7 +32,6 @@
RIGETTI_ARN,
RIGETTI_REGION,
SV1_ARN,
TN1_ARN,
run_and_assert,
run_batch_and_assert,
)
Expand Down Expand Up @@ -977,7 +976,7 @@ def test_device_simulator_not_found():
"Error": {
"Code": "ResourceNotFoundException",
"Message": (
"Braket device 'arn:aws:braket:::device/quantum-simulator/amazon/tn1' "
"Braket device 'arn:aws:braket:::device/quantum-simulator/amazon/dm1' "
"not found in us-west-1. You can find a list of all supported device "
"ARNs and the regions in which they are available in the documentation: "
"https://docs.aws.amazon.com/braket/latest/developerguide/braket-devices.html"
Expand All @@ -1001,7 +1000,7 @@ def test_device_qpu_not_found(mock_copy_session):
"Error": {
"Code": "ResourceNotFoundException",
"Message": (
"Braket device 'arn:aws:braket:::device/quantum-simulator/amazon/tn1' "
"Braket device 'arn:aws:braket:::device/quantum-simulator/amazon/dm1' "
"not found in us-west-1. You can find a list of all supported device "
"ARNs and the regions in which they are available in the documentation: "
"https://docs.aws.amazon.com/braket/latest/developerguide/braket-devices.html"
Expand All @@ -1025,7 +1024,7 @@ def test_device_qpu_exception(mock_copy_session):
"Error": {
"Code": "ResourceNotFoundException",
"Message": (
"Braket device 'arn:aws:braket:::device/quantum-simulator/amazon/tn1' "
"Braket device 'arn:aws:braket:::device/quantum-simulator/amazon/dm1' "
"not found in us-west-1. You can find a list of all supported device "
"ARNs and the regions in which they are available in the documentation: "
"https://docs.aws.amazon.com/braket/latest/developerguide/braket-"
Expand Down Expand Up @@ -1851,7 +1850,7 @@ def test_get_devices_simulators_only(mock_copy_session, aws_session):
session_for_region.get_device.side_effect = ValueError("should not be reachable")
mock_copy_session.return_value = session_for_region
results = AwsDevice.get_devices(
arns=[SV1_ARN, TN1_ARN],
arns=[SV1_ARN, DM1_ARN],
types=["SIMULATOR"],
provider_names=["Amazon Braket"],
statuses=["ONLINE"],
Expand Down
12 changes: 1 addition & 11 deletions test/unit_tests/braket/tracking/test_tracker.py
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Expand Up @@ -67,9 +67,6 @@ def test_receive_fake_event(empty_tracker):
_TaskCreationEvent(
arn="notjob_sim_task:::region", shots=0, is_job_task=False, device="simulator/bar"
),
_TaskCreationEvent(
arn="task_fail:::region", shots=0, is_job_task=False, device="simulator/tn1"
),
_TaskCreationEvent(
arn="task_cancel:::region", shots=0, is_job_task=False, device="simulator/baz"
),
Expand Down Expand Up @@ -114,7 +111,6 @@ def test_receive_fake_event(empty_tracker):
_TaskCompletionEvent(
arn="notjob_sim_task:::region", execution_duration=1729, status="COMPLETED"
),
_TaskCompletionEvent(arn="task_fail:::region", execution_duration=12345, status="FAILED"),
_TaskCompletionEvent(arn="task_cancel:::region", execution_duration=None, status="CANCELLED"),
_TaskCompletionEvent(
arn="unbilled_task0:::region",
Expand Down Expand Up @@ -186,7 +182,7 @@ def test_qpu_task_cost(price_mock, completed_tracker):
def test_simulator_task_cost(price_mock, completed_tracker):
price_mock.return_value = [{"PricePerUnit": "6.0", "Currency": "USD", "Unit": "minutes"}]
cost = completed_tracker.simulator_tasks_cost()
expected = Decimal("0.0001") * (3000 + 3000 + 12345)
expected = Decimal("0.0001") * (3000 + 3000)
assert cost == expected

price_mock.return_value = []
Expand All @@ -213,12 +209,6 @@ def test_quantum_task_statistics(completed_tracker):
"execution_duration": timedelta(seconds=1, microseconds=852000),
"billed_execution_duration": timedelta(seconds=6),
},
"simulator/tn1": {
"shots": 0,
"tasks": {"FAILED": 1},
"execution_duration": timedelta(seconds=12, microseconds=345000),
"billed_execution_duration": timedelta(seconds=12, microseconds=345000),
},
"simulator/baz": {"shots": 0, "tasks": {"CANCELLED": 1}},
"qpu/Ibex-Q1": {"shots": 100, "tasks": {"CREATED": 1}},
"qpu/2000Qxyz": {"shots": 100, "tasks": {"CREATED": 1}},
Expand Down
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