[gem5-dev] Change in gem5/gem5[develop]: tests: Add a test for forking and switching cpus
Austin Harris has submitted this change. (
https://gem5-review.googlesource.com/c/public/gem5/+/50467 )
(
5 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the
submitted one.
)Change subject: tests: Add a test for forking and switching cpus
..
tests: Add a test for forking and switching cpus
This tests forking gem5 and simulating the child with a different cpu.
The test boots linux with the KVM cpu and then forks gem5. Each child
simulation switches to the specified cpu and simulates to completion
while the parents waits for the children to finish before also
simulating to completion.
Change-Id: I68d7515bf125c855eefc62ba4798cd7c745ef2b0
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50467
Tested-by: kokoro
Reviewed-by: Bobby R. Bruce
Maintainer: Bobby R. Bruce
---
A tests/gem5/configs/boot_kvm_fork_run.py
A tests/gem5/kvm-fork-tests/test_kvm_fork_run.py
2 files changed, 434 insertions(+), 0 deletions(-)
Approvals:
Bobby R. Bruce: Looks good to me, approved; Looks good to me, approved
kokoro: Regressions pass
diff --git a/tests/gem5/configs/boot_kvm_fork_run.py
b/tests/gem5/configs/boot_kvm_fork_run.py
new file mode 100644
index 000..e9f0172
--- /dev/null
+++ b/tests/gem5/configs/boot_kvm_fork_run.py
@@ -0,0 +1,271 @@
+# Copyright (c) 2021 The University of Texas at Austin
+# 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.
+#
+# Author: Austin Harris
+#
+
+"""
+This script tests forking gem5 with the KVM cores and switching cores in
the
+child process. First, the test boots linux with KVM and tests
fast-forwarding
+with instruction exit events. Then the test forks the simulation, waits
for the
+child to simulate until completion, and then simulates to completion in the
+parent process.
+"""
+
+import argparse
+import os
+import sys
+from textwrap import dedent
+
+import m5
+from m5.objects import Root
+
+from gem5.components.boards.x86_board import X86Board
+from gem5.coherence_protocol import CoherenceProtocol
+from gem5.isas import ISA
+from gem5.components.memory.single_channel import SingleChannelDDR3_1600
+from gem5.components.processors.cpu_types import CPUTypes
+from gem5.components.processors.simple_switchable_processor import (
+SimpleSwitchableProcessor,
+)
+from gem5.resources.resource import Resource
+from gem5.runtime import (
+get_runtime_coherence_protocol, get_runtime_isa
+)
+from gem5.utils.requires import requires
+
+parser = argparse.ArgumentParser(
+description="A script to test forking gem5 and switching cpus."
+)
+parser.add_argument(
+"-m",
+"--mem-system",
+type=str,
+choices=("classic", "mi_example", "mesi_two_level"),
+required=True,
+help="The memory system.",
+)
+parser.add_argument(
+"-n",
+"--num-cpus",
+type=int,
+choices=(1, 2, 4, 8),
+default=4,
+help="The number of CPUs.",
+)
+parser.add_argument(
+"-c",
+"--cpu",
+type=str,
+choices=("kvm", "atomic", "timing", "o3"),
+required=True,
+help="The CPU type.",
+)
+parser.add_argument(
+"-r",
+"--resource-directory",
+type=str,
+required=False,
+help="The directory in which resources will be downloaded or exist.",
+)
+parser.add_argument(
+"-o",
+"--override-download",
+action="store_true",
+help="Override a local resource if the hashes do not match.",
+)
+parser.add_argument(
+"-k",
+"--kernel-args",
[gem5-dev] Change in gem5/gem5[develop]: tests: Add a test for forking and switching cpus
Austin Harris has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/50467 )
Change subject: tests: Add a test for forking and switching cpus
..
tests: Add a test for forking and switching cpus
This tests forking gem5 and simulating the child with a different cpu.
The test boots linux with the KVM cpu, tests instruction scheduling exit
events, and then forks gem5. The child simulation switches to the
specified cpu and simulates to completion while the parents waits for
the child to finish before also simulating to completion.
Change-Id: I68d7515bf125c855eefc62ba4798cd7c745ef2b0
---
A tests/gem5/configs/components-library/boot_kvm_fork_run.py
1 file changed, 300 insertions(+), 0 deletions(-)
diff --git a/tests/gem5/configs/components-library/boot_kvm_fork_run.py
b/tests/gem5/configs/components-library/boot_kvm_fork_run.py
new file mode 100644
index 000..eaf3aabe
--- /dev/null
+++ b/tests/gem5/configs/components-library/boot_kvm_fork_run.py
@@ -0,0 +1,300 @@
+# Copyright (c) 2021 The University of Texas at Austin
+# 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.
+#
+# Author: Austin Harris
+#
+
+"""
+This script tests forking gem5 with the KVM cores and switching cores in
the
+child process. First, the test boots linux with KVM and tests
fast-forwarding
+with instruction exit events. Then the test forks the simulation, waits
for the
+child to simulate until completion, and then simulates to completion in the
+parent process.
+"""
+
+import argparse
+import os
+import sys
+from textwrap import dedent
+
+import m5
+from m5.objects import Root
+
+# 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,
+os.pardir,
+)
+)
+
+from components_library.boards.x86_board import X86Board
+from components_library.coherence_protocol import CoherenceProtocol
+from components_library.isas import ISA
+from components_library.memory.single_channel import SingleChannelDDR3_1600
+from components_library.processors.cpu_types import CPUTypes
+from components_library.processors.simple_switchable_processor import (
+SimpleSwitchableProcessor,
+)
+from components_library.resources.resource import Resource
+from components_library.runtime import (
+get_runtime_coherence_protocol,
+get_runtime_isa
+)
+from components_library.utils.requires import requires
+
+parser = argparse.ArgumentParser(
+description="A script to test forking gem5 and switching cpus."
+)
+parser.add_argument(
+"-m",
+"--mem-system",
+type=str,
+choices=("classic", "mi_example", "mesi_two_level"),
+required=True,
+help="The memory system.",
+)
+parser.add_argument(
+"-n",
+"--num-cpus",
+type=int,
+choices=(1, 2, 4, 8),
+default=4,
+help="The number of CPUs.",
+)
+parser.add_argument(
+"-c",
+"--cpu",
+type=str,
+choices=("kvm", "atomic", "timing", "o3"),
+required=True,
+help="The CPU type.",
+)
+parser.add_argument(
+"-r",
+"--resource-directory",
+type=str,
+required=False,
+help="The directory in which resources will be downloaded or exist.",
+)
+parser.add_argument(
+"-o",
+"--override-download",
+action="store_true",
+help="Override a local resource if the hashes do not match.",
+)
