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gem5/configs/common/Options.py
Andreas Hansson 59460b91f3 config: Expose the DRAM ranks as a command-line option 
This patch gives the user direct influence over the number of DRAM
ranks to make it easier to tune the memory density without affecting
the bandwidth (previously the only means of scaling the device count
was through the number of channels).

The patch also adds some basic sanity checks to ensure that the number
of ranks is a power of two (since we rely on bit slices in the address
decoding).
2014-12-23 09:31:18 -05:00

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# Copyright (c) 2013 ARM Limited
# All rights reserved.
#
# The license below extends only to copyright in the software and shall
# not be construed as granting a license to any other intellectual
# property including but not limited to intellectual property relating
# to a hardware implementation of the functionality of the software
# licensed hereunder. You may use the software subject to the license
# terms below provided that you ensure that this notice is replicated
# unmodified and in its entirety in all distributions of the software,
# modified or unmodified, in source code or in binary form.
#
# Copyright (c) 2006-2008 The Regents of The University of Michigan
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Lisa Hsu
import m5
from m5.defines import buildEnv
from m5.objects import *
from Benchmarks import *
import CpuConfig
import MemConfig
def _listCpuTypes(option, opt, value, parser):
CpuConfig.print_cpu_list()
sys.exit(0)
def _listMemTypes(option, opt, value, parser):
MemConfig.print_mem_list()
sys.exit(0)
def addCommonOptions(parser):
# system options
parser.add_option("--list-cpu-types",
action="callback", callback=_listCpuTypes,
help="List available CPU types")
parser.add_option("--cpu-type", type="choice", default="atomic",
choices=CpuConfig.cpu_names(),
help = "type of cpu to run with")
parser.add_option("--checker", action="store_true");
parser.add_option("-n", "--num-cpus", type="int", default=1)
parser.add_option("--sys-voltage", action="store", type="string",
default='1.0V',
help = """Top-level voltage for blocks running at system
power supply""")
parser.add_option("--sys-clock", action="store", type="string",
default='1GHz',
help = """Top-level clock for blocks running at system
speed""")
parser.add_option("--cpu-clock", action="store", type="string",
default='2GHz',
help="Clock for blocks running at CPU speed")
parser.add_option("--smt", action="store_true", default=False,
help = """
Only used if multiple programs are specified. If true,
then the number of threads per cpu is same as the
number of programs.""")
# Memory Options
parser.add_option("--list-mem-types",
action="callback", callback=_listMemTypes,
help="List available memory types")
parser.add_option("--mem-type", type="choice", default="ddr3_1600_x64",
choices=MemConfig.mem_names(),
help = "type of memory to use")
parser.add_option("--mem-channels", type="int", default=1,
help = "number of memory channels")
parser.add_option("--mem-ranks", type="int", default=None,
help = "number of memory ranks per channel")
parser.add_option("--mem-size", action="store", type="string",
default="512MB",
help="Specify the physical memory size (single memory)")
parser.add_option("-l", "--lpae", action="store_true")
parser.add_option("-V", "--virtualisation", action="store_true")
parser.add_option("--memchecker", action="store_true")
# Cache Options
parser.add_option("--caches", action="store_true")
parser.add_option("--l2cache", action="store_true")
parser.add_option("--fastmem", action="store_true")
parser.add_option("--num-dirs", type="int", default=1)
parser.add_option("--num-l2caches", type="int", default=1)
parser.add_option("--num-l3caches", type="int", default=1)
parser.add_option("--l1d_size", type="string", default="64kB")
parser.add_option("--l1i_size", type="string", default="32kB")
parser.add_option("--l2_size", type="string", default="2MB")
parser.add_option("--l3_size", type="string", default="16MB")
parser.add_option("--l1d_assoc", type="int", default=2)
parser.add_option("--l1i_assoc", type="int", default=2)
parser.add_option("--l2_assoc", type="int", default=8)
parser.add_option("--l3_assoc", type="int", default=16)
parser.add_option("--cacheline_size", type="int", default=64)
# Enable Ruby
parser.add_option("--ruby", action="store_true")
# Run duration options
parser.add_option("-m", "--abs-max-tick", type="int", default=m5.MaxTick,
metavar="TICKS", help="Run to absolute simulated tick " \
"specified including ticks from a restored checkpoint")
parser.add_option("--rel-max-tick", type="int", default=None,
metavar="TICKS", help="Simulate for specified number of" \
" ticks relative to the simulation start tick (e.g. if " \
"restoring a checkpoint)")
parser.add_option("--maxtime", type="float", default=None,
help="Run to the specified absolute simulated time in " \
"seconds")
parser.add_option("-I", "--maxinsts", action="store", type="int",
default=None, help="""Total number of instructions to
simulate (default: run forever)""")
parser.add_option("--work-item-id", action="store", type="int",
help="the specific work id for exit & checkpointing")
parser.add_option("--num-work-ids", action="store", type="int",
help="Number of distinct work item types")
parser.add_option("--work-begin-cpu-id-exit", action="store", type="int",
help="exit when work starts on the specified cpu")
parser.add_option("--work-end-exit-count", action="store", type="int",
help="exit at specified work end count")
parser.add_option("--work-begin-exit-count", action="store", type="int",
help="exit at specified work begin count")
parser.add_option("--init-param", action="store", type="int", default=0,
help="""Parameter available in simulation with m5
initparam""")
# Simpoint options
parser.add_option("--simpoint-profile", action="store_true",
help="Enable basic block profiling for SimPoints")
parser.add_option("--simpoint-interval", type="int", default=10000000,
help="SimPoint interval in num of instructions")
parser.add_option("--take-simpoint-checkpoints", action="store", type="string",
help="<simpoint file,weight file,interval-length,warmup-length>")
parser.add_option("--restore-simpoint-checkpoint", action="store_true",
help="restore from a simpoint checkpoint taken with " +
"--take-simpoint-checkpoints")
# Checkpointing options
###Note that performing checkpointing via python script files will override
###checkpoint instructions built into binaries.
parser.add_option("--take-checkpoints", action="store", type="string",
help="<M,N> take checkpoints at tick M and every N ticks thereafter")
parser.add_option("--max-checkpoints", action="store", type="int",
help="the maximum number of checkpoints to drop", default=5)
parser.add_option("--checkpoint-dir", action="store", type="string",
help="Place all checkpoints in this absolute directory")
parser.add_option("-r", "--checkpoint-restore", action="store", type="int",
help="restore from checkpoint <N>")
parser.add_option("--checkpoint-at-end", action="store_true",
help="take a checkpoint at end of run")
parser.add_option("--work-begin-checkpoint-count", action="store", type="int",
help="checkpoint at specified work begin count")
parser.add_option("--work-end-checkpoint-count", action="store", type="int",
help="checkpoint at specified work end count")
parser.add_option("--work-cpus-checkpoint-count", action="store", type="int",
help="checkpoint and exit when active cpu count is reached")
parser.add_option("--restore-with-cpu", action="store", type="choice",
default="atomic", choices=CpuConfig.cpu_names(),
help = "cpu type for restoring from a checkpoint")
# CPU Switching - default switch model goes from a checkpoint
# to a timing simple CPU with caches to warm up, then to detailed CPU for
# data measurement
parser.add_option("--repeat-switch", action="store", type="int",
default=None,
help="switch back and forth between CPUs with period <N>")
parser.add_option("-s", "--standard-switch", action="store", type="int",
default=None,
help="switch from timing to Detailed CPU after warmup period of <N>")
parser.add_option("-p", "--prog-interval", type="str",
help="CPU Progress Interval")
# Fastforwarding and simpoint related materials
parser.add_option("-W", "--warmup-insts", action="store", type="int",
default=None,
help="Warmup period in total instructions (requires --standard-switch)")
parser.add_option("--bench", action="store", type="string", default=None,
help="base names for --take-checkpoint and --checkpoint-restore")
parser.add_option("-F", "--fast-forward", action="store", type="string",
default=None,
help="Number of instructions to fast forward before switching")
parser.add_option("-S", "--simpoint", action="store_true", default=False,
help="""Use workload simpoints as an instruction offset for
--checkpoint-restore or --take-checkpoint.""")
parser.add_option("--at-instruction", action="store_true", default=False,
help="""Treat value of --checkpoint-restore or --take-checkpoint as a
number of instructions.""")
parser.add_option("--spec-input", default="ref", type="choice",
choices=["ref", "test", "train", "smred", "mdred",
"lgred"],
help="Input set size for SPEC CPU2000 benchmarks.")
parser.add_option("--arm-iset", default="arm", type="choice",
choices=["arm", "thumb", "aarch64"],
help="ARM instruction set.")
def addSEOptions(parser):
# Benchmark options
parser.add_option("-c", "--cmd", default="",
help="The binary to run in syscall emulation mode.")
parser.add_option("-o", "--options", default="",
help="""The options to pass to the binary, use " "
around the entire string""")
parser.add_option("-i", "--input", default="",
help="Read stdin from a file.")
parser.add_option("--output", default="",
help="Redirect stdout to a file.")
parser.add_option("--errout", default="",
help="Redirect stderr to a file.")
def addFSOptions(parser):
# Simulation options
parser.add_option("--timesync", action="store_true",
help="Prevent simulated time from getting ahead of real time")
# System options
parser.add_option("--kernel", action="store", type="string")
parser.add_option("--script", action="store", type="string")
parser.add_option("--frame-capture", action="store_true",
help="Stores changed frame buffers from the VNC server to compressed "\
"files in the gem5 output directory")
if buildEnv['TARGET_ISA'] == "arm":
parser.add_option("--bare-metal", action="store_true",
help="Provide the raw system without the linux specific bits")
parser.add_option("--machine-type", action="store", type="choice",
choices=ArmMachineType.map.keys(), default="VExpress_EMM")
parser.add_option("--dtb-filename", action="store", type="string",
help="Specifies device tree blob file to use with device-tree-"\
"enabled kernels")
parser.add_option("--enable-context-switch-stats-dump", \
action="store_true", help="Enable stats dump at context "\
"switches and dump tasks file (required for Streamline)")
# Benchmark options
parser.add_option("--dual", action="store_true",
help="Simulate two systems attached with an ethernet link")
parser.add_option("-b", "--benchmark", action="store", type="string",
dest="benchmark",
help="Specify the benchmark to run. Available benchmarks: %s"\
% DefinedBenchmarks)
# Metafile options
parser.add_option("--etherdump", action="store", type="string", dest="etherdump",
help="Specify the filename to dump a pcap capture of the" \
"ethernet traffic")
# Disk Image Options
parser.add_option("--disk-image", action="store", type="string", default=None,
help="Path to the disk image to use.")
# Command line options
parser.add_option("--command-line", action="store", type="string",
default=None,
help="Template for the kernel command line.")
parser.add_option("--command-line-file", action="store",
default=None, type="string",
help="File with a template for the kernel command line")
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