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# SPDX-FileCopyrightText: Copyright 2022-2023, Arm Limited and/or its affiliates.
# SPDX-License-Identifier: Apache-2.0
"""Environment configuration functions."""
from __future__ import annotations
import logging
from mlia.backend.manager import get_installation_manager
from mlia.target.registry import all_supported_backends
logger = logging.getLogger(__name__)
DEFAULT_PRUNING_TARGET = 0.5
DEFAULT_CLUSTERING_TARGET = 32
def get_available_backends() -> list[str]:
"""Return list of the available backends."""
available_backends = ["Vela", "ArmNNTFLiteDelegate"]
# Add backends using backend manager
manager = get_installation_manager()
available_backends.extend(
backend
for backend in all_supported_backends()
if manager.backend_installed(backend)
)
return available_backends
# List of mutually exclusive Corstone backends ordered by priority
_CORSTONE_EXCLUSIVE_PRIORITY = ("Corstone-310", "Corstone-300")
_NON_ETHOS_U_BACKENDS = ("tosa-checker", "ArmNNTFLiteDelegate")
def get_ethos_u_default_backends(backends: list[str]) -> list[str]:
"""Get Ethos-U default backends for evaluation."""
return [x for x in backends if x not in _NON_ETHOS_U_BACKENDS]
def get_default_backends() -> list[str]:
"""Get default backends for evaluation."""
backends = get_available_backends()
# Filter backends to only include one Corstone backend
for corstone in _CORSTONE_EXCLUSIVE_PRIORITY:
if corstone in backends:
backends = [
backend
for backend in backends
if backend == corstone or backend not in _CORSTONE_EXCLUSIVE_PRIORITY
]
break
return backends
def get_default_backends_dict() -> dict[str, list[str]]:
"""Return default backends for all targets."""
default_backends = get_default_backends()
ethos_u_defaults = get_ethos_u_default_backends(default_backends)
return {
"ethos-u55": ethos_u_defaults,
"ethos-u65": ethos_u_defaults,
"tosa": ["tosa-checker"],
"cortex-a": ["ArmNNTFLiteDelegate"],
}
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