configs/example/components-library/simple_traffic_run.py

# Copyright (c) 2021 The Regents of the University of California
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"""
This script creates a simple traffic generator.

The simulator starts with a linear traffic generator, and ends with a random
traffic generator.
"""

import m5

from m5.objects import Root

import sys
import os

# This is a lame hack to get the imports working correctly.
# TODO: This needs fixed.
sys.path.append(
    os.path.join(
        os.path.dirname(os.path.abspath(__file__)),
        os.pardir,
        os.pardir,
        os.pardir,
    )
)

from components_library.boards.test_board import TestBoard
from components_library.cachehierarchies.classic.no_cache import NoCache
from components_library.memory.single_channel import SingleChannelDDR3_1600
from components_library.processors.complex_generator import ComplexGenerator

# This setup does not require a cache heirarchy. We therefore use the `NoCache`
# setup.
cache_hierarchy = NoCache()

# We test a Single Channel DDR3_1600.
memory = SingleChannelDDR3_1600(size="512MiB")

cmxgen = ComplexGenerator(num_cores=1)
cmxgen.add_linear(rate="100GB/s")
cmxgen.add_random(block_size=32, rate="50MB/s")

# We use the Test Board. This is a special board to run traffic generation
# tasks
motherboard = TestBoard(
    clk_freq="3GHz",
    processor=cmxgen,  # We pass the traffic generator as the processor.
    memory=memory,
    cache_hierarchy=cache_hierarchy,
)

motherboard.connect_things()

root = Root(full_system=False, system=motherboard)

m5.instantiate()

cmxgen.start_traffic()
print("Beginning simulation!")
exit_event = m5.simulate()
print(
    "Exiting @ tick {} because {}.".format(m5.curTick(), exit_event.getCause())
)
cmxgen.start_traffic()
print("The Linear taffic has finished. Swiching to random traffic!")
exit_event = m5.simulate()
print(
    "Exiting @ tick {} because {}.".format(m5.curTick(), exit_event.getCause())
)