experiments/cpuinfo: add experiment

Helps quickly determine available CPU features in host simulators.

experiments/pyexps/cpuinfo.py

+# Copyright 2021 Max Planck Institute for Software Systems, and
+# National University of Singapore
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+"""Runs /proc/cpuinfo in the host simulator to determine available CPU
+features."""
+
+import typing as tp
+
+import simbricks.orchestration.experiments as exp
+import simbricks.orchestration.nodeconfig as node
+import simbricks.orchestration.simulators as sim
+
+host_types = ['gem5', 'simics', 'qemu']
+experiments = []
+
+
+class Cpuinfo(node.AppConfig):
+
+    def run_cmds(self, _: node.NodeConfig) -> tp.List[str]:
+        return ['mount -t proc proc /proc', 'cat /proc/cpuinfo']
+
+
+# Create multiple experiments with different simulator permutations, which can
+# be filtered later.
+for host_type in host_types:
+    e = exp.Experiment(f'cpuinfo-{host_type}')
+
+    node_config = node.NodeConfig()
+    node_config.app = Cpuinfo()
+
+    # host
+    if host_type == 'gem5':
+        host = sim.Gem5Host(node_config)
+        e.checkpoint = True
+    elif host_type == 'simics':
+        host = sim.SimicsHost(node_config)
+        host.sync = True
+        e.checkpoint = True
+    elif host_type == 'qemu':
+        host = sim.QemuHost(node_config)
+        host.sync = True
+    else:
+        raise NameError(host_type)
+
+    host.name = 'host.0'
+    e.add_host(host)
+    host.wait = True
+
+    # add to experiments
+    experiments.append(e)