ddc9a18536
This is on by default in gem5 (see src/cpu/kvm/BaseKvmCPU.py), however the perf counters only measure host instruction counters and GPUFS is not concerned about accuracy of KVM CPU stats. There are also a larger set of users who have access to KVM, but do not have the paranoid level low enough to attach performance counters. Therefore, make the performance counters OFF by default. They can still be enabled, but this will allow for a larger set of users to follow the upcoming GPUFS documentation without needing to read through a troubleshooting section after seeing a gem5 error about the KVM paranoid level. Change-Id: I6b465559edf3ce17e7117ada049c60bd39aecd83
335 lines
11 KiB
Python
335 lines
11 KiB
Python
# Copyright (c) 2021 Advanced Micro Devices, Inc.
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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 met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived from this
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# software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# System includes
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import argparse
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import hashlib
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import math
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# gem5 related
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import m5
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from m5.objects import *
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from m5.util import addToPath
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# gem5 options and objects
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addToPath("../../")
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from amd import AmdGPUOptions
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from common import (
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GPUTLBConfig,
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GPUTLBOptions,
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ObjectList,
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Options,
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Simulation,
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)
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from ruby import Ruby
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# GPU FS related
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from system.system import makeGpuFSSystem
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def addRunFSOptions(parser):
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parser.add_argument(
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"--script",
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default=None,
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help="Script to execute in the simulated system",
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)
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parser.add_argument(
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"--host-parallel",
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default=False,
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action="store_true",
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help="Run multiple host threads in KVM mode",
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)
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parser.add_argument(
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"--restore-dir",
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type=str,
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default=None,
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help="Directory to restore checkpoints from",
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)
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parser.add_argument(
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"--disk-image",
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default="",
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help="The boot disk image to mount (/dev/sda)",
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)
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parser.add_argument(
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"--second-disk",
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default=None,
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help="The second disk image to mount (/dev/sdb)",
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)
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parser.add_argument("--kernel", default=None, help="Linux kernel to boot")
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parser.add_argument("--gpu-rom", default=None, help="GPU BIOS to load")
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parser.add_argument(
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"--gpu-mmio-trace", default=None, help="GPU MMIO trace to load"
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)
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parser.add_argument(
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"--checkpoint-before-mmios",
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default=False,
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action="store_true",
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help="Take a checkpoint before driver sends MMIOs. "
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"This is used to switch out of KVM mode and into "
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"timing mode required to read the VGA ROM on boot.",
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)
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parser.add_argument(
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"--cpu-topology",
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type=str,
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default="Crossbar",
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help="Network topology to use for CPU side. "
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"Check configs/topologies for complete set",
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)
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parser.add_argument(
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"--gpu-topology",
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type=str,
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default="Crossbar",
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help="Network topology to use for GPU side. "
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"Check configs/topologies for complete set",
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)
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parser.add_argument(
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"--dgpu-mem-size",
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action="store",
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type=str,
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default="16GB",
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help="Specify the dGPU physical memory size",
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)
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parser.add_argument(
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"--dgpu-num-dirs",
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type=int,
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default=1,
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help="Set the number of dGPU directories (memory controllers",
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)
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parser.add_argument(
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"--dgpu-mem-type",
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default="HBM_1000_4H_1x128",
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choices=ObjectList.mem_list.get_names(),
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help="type of memory to use",
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)
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# These are the models that are both supported in gem5 and supported
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# by the versions of ROCm supported by gem5 in full system mode. For
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# other gfx versions there is some support in syscall emulation mode.
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parser.add_argument(
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"--gpu-device",
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default="Vega10",
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choices=["Vega10", "MI100", "MI200", "MI300X"],
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help="GPU model to run: Vega10 (gfx900), MI100 (gfx908), MI200 "
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"(gfx90a), or MI300X (gfx942).",
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)
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parser.add_argument(
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"--debug-at-gpu-task",
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type=int,
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default=-1,
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help="Turn on debug flags starting with this task (counting both blit"
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" and non-blit kernels)",
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)
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parser.add_argument(
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"--exit-at-gpu-task",
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type=int,
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default=-1,
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help="Exit simulation after running this many tasks (counting both "
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"blit and non-blit kernels)",
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)
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parser.add_argument(
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"--exit-after-gpu-kernel",
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type=int,
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default=-1,
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help="Exit simulation after completing this (non-blit) kernel",
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)
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parser.add_argument(
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"--skip-until-gpu-kernel",
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type=int,
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default=0,
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help="Skip (non-blit) kernels until reaching this kernel. Note that "
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"this can impact correctness (the skipped kernels are completely "
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"skipped, not fast forwarded)",
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)
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parser.add_argument(
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"--root-partition",
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type=str,
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default="/dev/sda1",
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help="Root partition of disk image",
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)
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parser.add_argument(
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"--disable-avx",
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action="store_true",
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default=False,
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help="Disables AVX. AVX is used in some ROCm libraries but "
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"does not have checkpointing support yet. If simulation either "
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"creates a checkpoint or restores from one, then AVX needs to "
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"be disabled for correct functionality ",
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)
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parser.add_argument(
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"--kvm-perf",
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default=False,
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action="store_true",
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help="Enable KVM perf counters",
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)
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parser.add_argument(
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"--tcp-rp",
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type=str,
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default="TreePLRURP",
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help="cache replacement policy" "policy for tcp",
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)
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parser.add_argument(
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"--tcc-rp",
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type=str,
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default="TreePLRURP",
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help="cache replacement policy" "policy for tcc",
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)
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# sqc rp both changes sqc rp and scalar cache rp
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parser.add_argument(
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"--sqc-rp",
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type=str,
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default="TreePLRURP",
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help="cache replacement policy" "policy for sqc",
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)
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def runGpuFSSystem(args):
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"""
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This function can be called by higher level scripts designed to simulate
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specific devices. As a result the scripts typically hard code some args
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that should not be changed by the user.
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"""
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# GPUFS is primarily designed to use the X86 KVM CPU. This model needs to
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# use multiple event queues when more than one CPU is simulated. Force it
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# on if that is the case.
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if ObjectList.is_kvm_cpu(ObjectList.cpu_list.get(args.cpu_type)):
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args.host_parallel = True if args.num_cpus > 1 else False
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# These are used by the protocols. They should not be set by the user.
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n_cu = args.num_compute_units
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args.num_sqc = int(math.ceil(float(n_cu) / args.cu_per_sqc))
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args.num_scalar_cache = int(
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math.ceil(float(n_cu) / args.cu_per_scalar_cache)
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)
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# Verify MMIO trace is valid. This is only needed for Vega10 simulations.
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# The md5sum refers to the md5sum of the Vega10 MMIO hardware trace in
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# the gem5-resources repository. By checking it here, we avoid potential
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# errors that would cause the driver not to load and simulations to fail.
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if args.gpu_device == "Vega10":
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mmio_file = open(args.gpu_mmio_trace, "rb")
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mmio_md5 = hashlib.md5(mmio_file.read()).hexdigest()
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if mmio_md5 != "c4ff3326ae8a036e329b8b595c83bd6d":
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m5.util.panic("MMIO file does not match gem5 resources")
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system = makeGpuFSSystem(args)
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root = Root(
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full_system=True,
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system=system,
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time_sync_enable=True,
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time_sync_period="1000us",
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)
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if args.host_parallel:
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root.sim_quantum = int(1e8)
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if args.script is not None:
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system.readfile = args.script
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if args.restore_dir is None:
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m5.instantiate()
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else:
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m5.instantiate(args.restore_dir)
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print("Running the simulation")
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sim_ticks = args.abs_max_tick
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kernels_completed = 0
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tasks_completed = 0
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if args.debug_at_gpu_task != -1:
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m5.trace.disable()
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exit_event = m5.simulate(sim_ticks)
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# Keep executing while there is something to do
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while True:
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if (
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exit_event.getCause() == "m5_exit instruction encountered"
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or exit_event.getCause() == "user interrupt received"
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or exit_event.getCause() == "simulate() limit reached"
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):
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break
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elif "checkpoint" in exit_event.getCause():
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assert args.checkpoint_dir is not None
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m5.checkpoint(args.checkpoint_dir)
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break
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elif "GPU Kernel Completed" in exit_event.getCause():
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if kernels_completed == args.exit_after_gpu_kernel:
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print(f"Exiting after GPU kernel {kernels_completed}")
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break
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kernels_completed += 1
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tasks_completed += 1
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elif "GPU Blit Kernel Completed" in exit_event.getCause():
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tasks_completed += 1
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elif "Skipping GPU Kernel" in exit_event.getCause():
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print(f"Skipping GPU kernel {kernels_completed}")
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kernels_completed += 1
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tasks_completed += 1
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else:
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print(
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f"Unknown exit event: {exit_event.getCause()}. Continuing..."
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)
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if tasks_completed == args.debug_at_gpu_task:
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print(f"Enabling debug flags @ GPU task {tasks_completed}")
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m5.trace.enable()
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if tasks_completed == args.exit_at_gpu_task:
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print(f"Exiting @ GPU task {tasks_completed}")
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break
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exit_event = m5.simulate(sim_ticks - m5.curTick())
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print(
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"Exiting @ tick %i because %s" % (m5.curTick(), exit_event.getCause())
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)
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if __name__ == "__m5_main__":
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# Add gpufs, common, ruby, amdgpu, and gpu tlb args
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parser = argparse.ArgumentParser()
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addRunFSOptions(parser)
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Options.addCommonOptions(parser)
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Ruby.define_options(parser)
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AmdGPUOptions.addAmdGPUOptions(parser)
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GPUTLBOptions.tlb_options(parser)
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args = parser.parse_args()
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runGpuFSSystem(args)
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