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misc: Bail out of DVFS dot if we cannot resolve the domains

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This changeset updates the dot output to bail out if it is unable to
resolve the voltage or clock domains (which will cause it to raise an
AttributeError). Additionally, the DVFS dot output is disabled by
default for speed purposes.

Minor fixup for 0aeca8f.
This commit is contained in:
Sascha Bischoff 2016-04-06 17:55:17 +01:00
parent fd52a63e24
commit 1097aa1638
3 changed files with 18 additions and 9 deletions
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2
src/python/m5/main.py
View file

@ -91,7 +91,7 @@ def parse_options():
help="Create JSON output of the configuration [Default: %default]")
option("--dot-config", metavar="FILE", default="config.dot",
help="Create DOT & pdf outputs of the configuration [Default: %default]")
option("--dot-dvfs-config", metavar="FILE", default="config_dvfs.dot",
option("--dot-dvfs-config", metavar="FILE", default=None,
help="Create DOT & pdf outputs of the DVFS configuration" + \
" [Default: %default]")

1
src/python/m5/simulate.py
View file

@ -129,6 +129,7 @@ def instantiate(ckpt_dir=None):
# We want to generate the DVFS diagram for the system. This can only be
# done once all of the CPP objects have been created and initialised so
# that we are able to figure out which object belongs to which domain.
if options.dot_dvfs_config:
do_dvfs_dot(root, options.outdir, options.dot_dvfs_config)
# We're done registering statistics. Enable the stats package now.

12
src/python/m5/util/dot_writer.py
View file

@ -310,7 +310,7 @@ def dot_create_dvfs_nodes(simNode, callgraph, domain=None):
except AttributeError:
# Just re-use the domain from above
c_dom = domain
c_dom.__getattr__('voltage_domain')
v_dom = c_dom.__getattr__('voltage_domain')
pass
if c_dom == domain or c_dom == None:
@ -329,7 +329,7 @@ def dot_create_dvfs_nodes(simNode, callgraph, domain=None):
except AttributeError:
# Just re-use the domain from above
c_dom = domain
c_dom.__getattr__('voltage_domain')
v_dom = c_dom.__getattr__('voltage_domain')
pass
if c_dom == domain or c_dom == None:
@ -370,11 +370,19 @@ def do_dot(root, outdir, dotFilename):
def do_dvfs_dot(root, outdir, dotFilename):
if not pydot:
return
# There is a chance that we are unable to resolve the clock or
# voltage domains. If so, we fail silently.
try:
dvfsgraph = pydot.Dot(graph_type='digraph', ranksep='1.3')
dot_create_dvfs_nodes(root, dvfsgraph)
dot_create_edges(root, dvfsgraph)
dot_filename = os.path.join(outdir, dotFilename)
dvfsgraph.write(dot_filename)
except:
warn("Failed to generate dot graph for DVFS domains")
return
try:
# dot crashes if the figure is extremely wide.
# So avoid terminating simulation unnecessarily