e2656006df
This patch updates the FileSystemConfig so it works with more kinds of config scripts (e.g., the Learning gem5 scripts). There are 4 main changes: - Added system as a parameter to the config_filesystem function so the function can search the system for the number of CPUs instead of relying on options from Options.py - Instead of calling redirect_paths everywhere config_filesystem is used, now it is implicitly called. - Cleaned up the Ruby scripts a bit to remove redundant calls to config_filesystem - Added a config_filesystem call to the Ruby Learning gem5 script (currently the only Learning gem5 script that requires it). In the future, I think it would be better to move the config_filesystem call into simulate.py, probably into the instantiate function. I tried to use the per-CPU configuration parameters instead of options from Options.py, but that's not possible until after the SimObject params have been finalized in instantiate. Change-Id: Ie6501a7435cfb3ac9d2b45be3722388b34063b1e Signed-off-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18848 Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Tested-by: kokoro <noreply+kokoro@google.com>
115 lines
4.3 KiB
Python
115 lines
4.3 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (c) 2015 Jason Power
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Jason Lowe-Power
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""" This file creates a system with Ruby caches and executes 'threads', a
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simple multi-threaded application with false sharing to stress the Ruby
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protocol.
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See Part 3 in the Learning gem5 book: learning.gem5.org/book/part3
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IMPORTANT: If you modify this file, it's likely that the Learning gem5 book
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also needs to be updated. For now, email Jason <jason@lowepower.com>
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"""
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from __future__ import print_function
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from __future__ import absolute_import
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# import the m5 (gem5) library created when gem5 is built
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import m5
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# import all of the SimObjects
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from m5.objects import *
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# Needed for running C++ threads
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m5.util.addToPath('../../')
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from common.FileSystemConfig import config_filesystem
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# You can import ruby_caches_MI_example to use the MI_example protocol instead
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# of the MSI protocol
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from msi_caches import MyCacheSystem
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# create the system we are going to simulate
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system = System()
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# Set the clock fequency of the system (and all of its children)
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system.clk_domain = SrcClockDomain()
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system.clk_domain.clock = '1GHz'
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system.clk_domain.voltage_domain = VoltageDomain()
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# Set up the system
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system.mem_mode = 'timing' # Use timing accesses
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system.mem_ranges = [AddrRange('512MB')] # Create an address range
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# Create a pair of simple CPUs
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system.cpu = [TimingSimpleCPU() for i in range(2)]
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# Create a DDR3 memory controller and connect it to the membus
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system.mem_ctrl = DDR3_1600_8x8()
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system.mem_ctrl.range = system.mem_ranges[0]
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# create the interrupt controller for the CPU and connect to the membus
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for cpu in system.cpu:
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cpu.createInterruptController()
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# Create the Ruby System
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system.caches = MyCacheSystem()
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system.caches.setup(system, system.cpu, [system.mem_ctrl])
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# get ISA for the binary to run.
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isa = str(m5.defines.buildEnv['TARGET_ISA']).lower()
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# Run application and use the compiled ISA to find the binary
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# grab the specific path to the binary
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thispath = os.path.dirname(os.path.realpath(__file__))
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binary = os.path.join(thispath, '../../../', 'tests/test-progs/threads/bin/',
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isa, 'linux/threads')
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# Create a process for a simple "multi-threaded" application
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process = Process()
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# Set the command
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# cmd is a list which begins with the executable (like argv)
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process.cmd = [binary]
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# Set the cpu to use the process as its workload and create thread contexts
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for cpu in system.cpu:
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cpu.workload = process
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cpu.createThreads()
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# Set up the pseudo file system for the threads function above
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config_filesystem(system)
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# set up the root SimObject and start the simulation
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root = Root(full_system = False, system = system)
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# instantiate all of the objects we've created above
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m5.instantiate()
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print("Beginning simulation!")
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exit_event = m5.simulate()
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print('Exiting @ tick {} because {}'.format(
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m5.curTick(), exit_event.getCause())
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)
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