config: Switch from the print statement to the print function.

Change-Id: I701fa58cfcfa2767ce9ad24da314a053889878d0
Reviewed-on: https://gem5-review.googlesource.com/8762
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>
Maintainer: Gabe Black <gabeblack@google.com>

17 files changed, 119 insertions, 87 deletions

diff --git a/configs/example/apu_se.py b/configs/example/apu_se.py
index 012fdd36b..da6305ff9 100644
--- a/configs/example/apu_se.py
+++ b/configs/example/apu_se.py
@@ -33,6 +33,8 @@
 #  Author: Sooraj Puthoor
 #
 
+from __future__ import print_function
+
 import optparse, os, re
 import math
 import glob
@@ -385,7 +387,7 @@ else:
     kernel_path = os.path.dirname(executable)
     kernel_files = glob.glob(os.path.join(kernel_path, '*.asm'))
     if kernel_files:
-        print "Using GPU kernel code file(s)", ",".join(kernel_files)
+        print("Using GPU kernel code file(s)", ",".join(kernel_files))
     else:
         fatal("Can't locate kernel code (.asm) in " + kernel_path)
 
@@ -489,7 +491,7 @@ for i in xrange(n_cu):
 
 for i in xrange(n_cu):
     if i > 0 and not i % options.cu_per_sqc:
-        print "incrementing idx on ", i
+        print("incrementing idx on ", i)
         gpu_port_idx += 1
     system.cpu[shader_idx].CUs[i].sqc_port = \
             system.ruby._cpu_ports[gpu_port_idx].slave
@@ -552,15 +554,14 @@ m5.instantiate(checkpoint_dir)
 host_cpu.workload[0].map(0x10000000, 0x200000000, 4096)
 
 if options.fast_forward:
-    print "Switch at instruction count: %d" % \
-        cpu_list[0].max_insts_any_thread
+    print("Switch at instruction count: %d" % cpu_list[0].max_insts_any_thread)
 
 exit_event = m5.simulate(maxtick)
 
 if options.fast_forward:
     if exit_event.getCause() == "a thread reached the max instruction count":
         m5.switchCpus(system, switch_cpu_list)
-        print "Switched CPUS @ tick %s" % (m5.curTick())
+        print("Switched CPUS @ tick %s" % (m5.curTick()))
         m5.stats.reset()
         exit_event = m5.simulate(maxtick - m5.curTick())
 elif options.fast_forward_pseudo_op:
@@ -568,15 +569,15 @@ elif options.fast_forward_pseudo_op:
         # If we are switching *to* kvm, then the current stats are meaningful
         # Note that we don't do any warmup by default
         if type(switch_cpu_list[0][0]) == FutureCpuClass:
-            print "Dumping stats..."
+            print("Dumping stats...")
             m5.stats.dump()
         m5.switchCpus(system, switch_cpu_list)
-        print "Switched CPUS @ tick %s" % (m5.curTick())
+        print("Switched CPUS @ tick %s" % (m5.curTick()))
         m5.stats.reset()
         # This lets us switch back and forth without keeping a counter
         switch_cpu_list = [(x[1], x[0]) for x in switch_cpu_list]
         exit_event = m5.simulate(maxtick - m5.curTick())
 
-print "Ticks:", m5.curTick()
-print 'Exiting because ', exit_event.getCause()
+print("Ticks:", m5.curTick())
+print('Exiting because ', exit_event.getCause())
 sys.exit(exit_event.getCode())
diff --git a/configs/example/arm/fs_bigLITTLE.py b/configs/example/arm/fs_bigLITTLE.py
index 7e0555c00..7d66c03a6 100644
--- a/configs/example/arm/fs_bigLITTLE.py
+++ b/configs/example/arm/fs_bigLITTLE.py
@@ -40,6 +40,8 @@
 # a generic ARM bigLITTLE system.
 
 
+from __future__ import print_function
+
 import argparse
 import os
 import sys
@@ -311,12 +313,12 @@ def run(checkpoint_dir=m5.options.outdir):
         event = m5.simulate()
         exit_msg = event.getCause()
         if exit_msg == "checkpoint":
-            print "Dropping checkpoint at tick %d" % m5.curTick()
+            print("Dropping checkpoint at tick %d" % m5.curTick())
             cpt_dir = os.path.join(checkpoint_dir, "cpt.%d" % m5.curTick())
             m5.checkpoint(cpt_dir)
-            print "Checkpoint done."
+            print("Checkpoint done.")
         else:
-            print exit_msg, " @ ", m5.curTick()
+            print(exit_msg, " @ ", m5.curTick())
             break
 
     sys.exit(event.getCode())
diff --git a/configs/example/arm/fs_power.py b/configs/example/arm/fs_power.py
index 14dbae04a..b27455f13 100644
--- a/configs/example/arm/fs_power.py
+++ b/configs/example/arm/fs_power.py
@@ -39,6 +39,8 @@
 # This configuration file extends the example ARM big.LITTLE(tm)
 # with example power models.
 
+from __future__ import print_function
+
 import argparse
 import os
 
@@ -90,11 +92,11 @@ def main():
 
     bL.instantiate(options)
 
-    print "*" * 70
-    print "WARNING: The power numbers generated by this script are " \
-        "examples. They are not representative of any particular " \
-        "implementation or process."
-    print "*" * 70
+    print("*" * 70)
+    print("WARNING: The power numbers generated by this script are "
+        "examples. They are not representative of any particular "
+        "implementation or process.")
+    print("*" * 70)
 
     # Dumping stats periodically
     m5.stats.periodicStatDump(m5.ticks.fromSeconds(0.1E-3))
diff --git a/configs/example/arm/starter_fs.py b/configs/example/arm/starter_fs.py
index 2ca1cb800..a1997682e 100644
--- a/configs/example/arm/starter_fs.py
+++ b/configs/example/arm/starter_fs.py
@@ -43,6 +43,8 @@ Research Starter Kit on System Modeling. More information can be found
 at: http://www.arm.com/ResearchEnablement/SystemModeling
 """
 
+from __future__ import print_function
+
 import os
 import m5
 from m5.util import addToPath
@@ -97,7 +99,7 @@ def create(args):
         dtb_file = args.dtb
 
     if args.script and not os.path.isfile(args.script):
-        print "Error: Bootscript %s does not exist" % args.script
+        print("Error: Bootscript %s does not exist" % args.script)
         sys.exit(1)
 
     cpu_class = cpu_types[args.cpu][0]
@@ -175,18 +177,18 @@ def create(args):
 def run(args):
     cptdir = m5.options.outdir
     if args.checkpoint:
-        print "Checkpoint directory: %s" % cptdir
+        print("Checkpoint directory: %s" % cptdir)
 
     while True:
         event = m5.simulate()
         exit_msg = event.getCause()
         if exit_msg == "checkpoint":
-            print "Dropping checkpoint at tick %d" % m5.curTick()
+            print("Dropping checkpoint at tick %d" % m5.curTick())
             cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
             m5.checkpoint(os.path.join(cpt_dir))
-            print "Checkpoint done."
+            print("Checkpoint done.")
         else:
-            print exit_msg, " @ ", m5.curTick()
+            print(exit_msg, " @ ", m5.curTick())
             break
 
     sys.exit(event.getCode())
diff --git a/configs/example/arm/starter_se.py b/configs/example/arm/starter_se.py
index 902e6e49a..ef218d978 100644
--- a/configs/example/arm/starter_se.py
+++ b/configs/example/arm/starter_se.py
@@ -43,6 +43,8 @@ Research Starter Kit on System Modeling. More information can be found
 at: http://www.arm.com/ResearchEnablement/SystemModeling
 """
 
+from __future__ import print_function
+
 import os
 import m5
 from m5.util import addToPath
@@ -145,7 +147,7 @@ def get_processes(cmd):
 
         process = Process(pid=100 + idx, cwd=cwd, cmd=argv, executable=argv[0])
 
-        print "info: %d. command and arguments: %s" % (idx + 1, process.cmd)
+        print("info: %d. command and arguments: %s" % (idx + 1, process.cmd))
         multiprocesses.append(process)
 
     return multiprocesses
@@ -168,8 +170,8 @@ def create(args):
     # that we can pass to gem5.
     processes = get_processes(args.commands_to_run)
     if len(processes) != args.num_cores:
-        print "Error: Cannot map %d command(s) onto %d " \
-            "CPU(s)" % (len(processes), args.num_cores)
+        print("Error: Cannot map %d command(s) onto %d CPU(s)" %
+              (len(processes), args.num_cores))
         sys.exit(1)
 
     # Assign one workload to each CPU
@@ -225,7 +227,7 @@ def main():
     # Print the reason for the simulation exit. Some exit codes are
     # requests for service (e.g., checkpoints) from the simulation
     # script. We'll just ignore them here and exit.
-    print event.getCause(), " @ ", m5.curTick()
+    print(event.getCause(), " @ ", m5.curTick())
     sys.exit(event.getCode())
 
 
diff --git a/configs/example/etrace_replay.py b/configs/example/etrace_replay.py
index f8586d62f..e64871af7 100644
--- a/configs/example/etrace_replay.py
+++ b/configs/example/etrace_replay.py
@@ -37,6 +37,8 @@
 
 # Basic elastic traces replay script that configures a Trace CPU
 
+from __future__ import print_function
+
 import optparse
 
 from m5.util import addToPath, fatal
@@ -53,14 +55,14 @@ parser = optparse.OptionParser()
 Options.addCommonOptions(parser)
 
 if '--ruby' in sys.argv:
-    print "This script does not support Ruby configuration, mainly"\
-    " because Trace CPU has been tested only with classic memory system"
+    print("This script does not support Ruby configuration, mainly"
+    " because Trace CPU has been tested only with classic memory system")
     sys.exit(1)
 
 (options, args) = parser.parse_args()
 
 if args:
-    print "Error: script doesn't take any positional arguments"
+    print("Error: script doesn't take any positional arguments")
     sys.exit(1)
 
 numThreads = 1
diff --git a/configs/example/fs.py b/configs/example/fs.py
index f7115eb48..0f87e2b3a 100644
--- a/configs/example/fs.py
+++ b/configs/example/fs.py
@@ -41,6 +41,8 @@
 # Authors: Ali Saidi
 #          Brad Beckmann
 
+from __future__ import print_function
+
 import optparse
 import sys
 
@@ -74,8 +76,8 @@ def is_kvm_cpu(cpu_class):
 
 def cmd_line_template():
     if options.command_line and options.command_line_file:
-        print "Error: --command-line and --command-line-file are " \
-              "mutually exclusive"
+        print("Error: --command-line and --command-line-file are "
+              "mutually exclusive")
         sys.exit(1)
     if options.command_line:
         return options.command_line
@@ -310,7 +312,7 @@ if '--ruby' in sys.argv:
 (options, args) = parser.parse_args()
 
 if args:
-    print "Error: script doesn't take any positional arguments"
+    print("Error: script doesn't take any positional arguments")
     sys.exit(1)
 
 # system under test can be any CPU
@@ -323,8 +325,8 @@ if options.benchmark:
     try:
         bm = Benchmarks[options.benchmark]
     except KeyError:
-        print "Error benchmark %s has not been defined." % options.benchmark
-        print "Valid benchmarks are: %s" % DefinedBenchmarks
+        print("Error benchmark %s has not been defined." % options.benchmark)
+        print("Valid benchmarks are: %s" % DefinedBenchmarks)
         sys.exit(1)
 else:
     if options.dual:
@@ -357,7 +359,7 @@ elif len(bm) == 1 and options.dist:
 elif len(bm) == 1:
     root = Root(full_system=True, system=test_sys)
 else:
-    print "Error I don't know how to create more than 2 systems."
+    print("Error I don't know how to create more than 2 systems.")
     sys.exit(1)
 
 if options.timesync:
diff --git a/configs/example/garnet_synth_traffic.py b/configs/example/garnet_synth_traffic.py
index 0cb1fae9f..92fb3a047 100644
--- a/configs/example/garnet_synth_traffic.py
+++ b/configs/example/garnet_synth_traffic.py
@@ -26,6 +26,8 @@
 #
 # Author: Tushar Krishna
 
+from __future__ import print_function
+
 import m5
 from m5.objects import *
 from m5.defines import buildEnv
@@ -90,14 +92,13 @@ execfile(os.path.join(config_root, "common", "Options.py"))
 (options, args) = parser.parse_args()
 
 if args:
-     print "Error: script doesn't take any positional arguments"
+     print("Error: script doesn't take any positional arguments")
      sys.exit(1)
 
 
 if options.inj_vnet > 2:
-    print "Error: Injection vnet %d should be 0 (1-flit), 1 (1-flit) \
-                  or 2 (5-flit) or -1 (random)"\
-           % (options.inj_vnet)
+    print("Error: Injection vnet %d should be 0 (1-flit), 1 (1-flit) "
+          "or 2 (5-flit) or -1 (random)" % (options.inj_vnet))
     sys.exit(1)
 
 
@@ -153,4 +154,4 @@ m5.instantiate()
 # simulate until program terminates
 exit_event = m5.simulate(options.abs_max_tick)
 
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
diff --git a/configs/example/hmctest.py b/configs/example/hmctest.py
index 9ed3ef45d..c370d0a84 100644
--- a/configs/example/hmctest.py
+++ b/configs/example/hmctest.py
@@ -1,3 +1,5 @@
+from __future__ import print_function
+
 import sys
 import argparse
 import subprocess
@@ -100,13 +102,13 @@ def main():
     root = build_system(options)
     # instantiate all of the objects we've created so far
     m5.instantiate()
-    print "Beginning simulation!"
+    print("Beginning simulation!")
     event = m5.simulate(10000000000)
     m5.stats.dump()
-    print 'Exiting @ tick %i because %s (exit code is %i)' % (m5.curTick(),
+    print('Exiting @ tick %i because %s (exit code is %i)' % (m5.curTick(),
                                                               event.getCause(),
-                                                              event.getCode())
-    print "Done"
+                                                              event.getCode()))
+    print("Done")
 
 
 if __name__ == "__m5_main__":
diff --git a/configs/example/memcheck.py b/configs/example/memcheck.py
index 0bbcd2f7c..c2eed1959 100644
--- a/configs/example/memcheck.py
+++ b/configs/example/memcheck.py
@@ -39,6 +39,8 @@
 # Authors: Ron Dreslinski
 #          Andreas Hansson
 
+from __future__ import print_function
+
 import optparse
 import random
 import sys
@@ -108,7 +110,7 @@ parser.add_option("--sys-clock", action="store", type="string",
 (options, args) = parser.parse_args()
 
 if args:
-     print "Error: script doesn't take any positional arguments"
+     print("Error: script doesn't take any positional arguments")
      sys.exit(1)
 
 # Start by parsing the command line options and do some basic sanity
@@ -118,36 +120,36 @@ if options.random:
      tree_depth = random.randint(1, 4)
      cachespec = [random.randint(1, 3) for i in range(tree_depth)]
      testerspec = [random.randint(1, 3) for i in range(tree_depth + 1)]
-     print "Generated random tree -c", ':'.join(map(str, cachespec)), \
-         "-t", ':'.join(map(str, testerspec))
+     print("Generated random tree -c", ':'.join(map(str, cachespec)),
+         "-t", ':'.join(map(str, testerspec)))
 else:
      try:
           cachespec = [int(x) for x in options.caches.split(':')]
           testerspec = [int(x) for x in options.testers.split(':')]
      except:
-          print "Error: Unable to parse caches or testers option"
+          print("Error: Unable to parse caches or testers option")
           sys.exit(1)
 
      if len(cachespec) < 1:
-          print "Error: Must have at least one level of caches"
+          print("Error: Must have at least one level of caches")
           sys.exit(1)
 
      if len(cachespec) != len(testerspec) - 1:
-          print "Error: Testers must have one element more than caches"
+          print("Error: Testers must have one element more than caches")
           sys.exit(1)
 
      if testerspec[-1] == 0:
-          print "Error: Must have testers at the uppermost level"
+          print("Error: Must have testers at the uppermost level")
           sys.exit(1)
 
      for t in testerspec:
           if t < 0:
-               print "Error: Cannot have a negative number of testers"
+               print("Error: Cannot have a negative number of testers")
                sys.exit(1)
 
      for c in cachespec:
           if c < 1:
-               print "Error: Must have 1 or more caches at each level"
+               print("Error: Must have 1 or more caches at each level")
                sys.exit(1)
 
 # Determine the tester multiplier for each level as the string
@@ -155,7 +157,7 @@ else:
 multiplier = [1]
 for c in cachespec:
      if c < 1:
-          print "Error: Must have at least one cache per level"
+          print("Error: Must have at least one cache per level")
      multiplier.append(multiplier[-1] * c)
 
 numtesters = 0
@@ -275,7 +277,7 @@ def make_cache_level(ncaches, prototypes, level, next_cache):
                cache.mem_side = xbar.slave
      else:
           if not next_cache:
-               print "Error: No next-level cache at top level"
+               print("Error: No next-level cache at top level")
                sys.exit(1)
 
           if ntesters > 1:
@@ -315,4 +317,4 @@ m5.instantiate()
 # Simulate until program terminates
 exit_event = m5.simulate(options.maxtick)
 
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
diff --git a/configs/example/memtest.py b/configs/example/memtest.py
index d6f940e6b..df22609bd 100644
--- a/configs/example/memtest.py
+++ b/configs/example/memtest.py
@@ -39,6 +39,8 @@
 # Authors: Ron Dreslinski
 #          Andreas Hansson
 
+from __future__ import print_function
+
 import optparse
 import random
 import sys
@@ -107,7 +109,7 @@ parser.add_option("--sys-clock", action="store", type="string",
 (options, args) = parser.parse_args()
 
 if args:
-     print "Error: script doesn't take any positional arguments"
+     print("Error: script doesn't take any positional arguments")
      sys.exit(1)
 
 # Get the total number of testers
@@ -137,41 +139,41 @@ if options.random:
           if numtesters(cachespec, testerspec) < block_size:
                break
 
-     print "Generated random tree -c", ':'.join(map(str, cachespec)), \
-         "-t", ':'.join(map(str, testerspec))
+     print("Generated random tree -c", ':'.join(map(str, cachespec)),
+         "-t", ':'.join(map(str, testerspec)))
 else:
      try:
           cachespec = [int(x) for x in options.caches.split(':')]
           testerspec = [int(x) for x in options.testers.split(':')]
      except:
-          print "Error: Unable to parse caches or testers option"
+          print("Error: Unable to parse caches or testers option")
           sys.exit(1)
 
      if len(cachespec) < 1:
-          print "Error: Must have at least one level of caches"
+          print("Error: Must have at least one level of caches")
           sys.exit(1)
 
      if len(cachespec) != len(testerspec) - 1:
-          print "Error: Testers must have one element more than caches"
+          print("Error: Testers must have one element more than caches")
           sys.exit(1)
 
      if testerspec[-1] == 0:
-          print "Error: Must have testers at the uppermost level"
+          print("Error: Must have testers at the uppermost level")
           sys.exit(1)
 
      for t in testerspec:
           if t < 0:
-               print "Error: Cannot have a negative number of testers"
+               print("Error: Cannot have a negative number of testers")
                sys.exit(1)
 
      for c in cachespec:
           if c < 1:
-               print "Error: Must have 1 or more caches at each level"
+               print("Error: Must have 1 or more caches at each level")
                sys.exit(1)
 
      if numtesters(cachespec, testerspec) > block_size:
-          print "Error: Limited to %s testers because of false sharing" \
-              % (block_size)
+          print("Error: Limited to %s testers because of false sharing"
+              % (block_size))
           sys.exit(1)
 
 # Define a prototype L1 cache that we scale for all successive levels
@@ -280,7 +282,7 @@ def make_cache_level(ncaches, prototypes, level, next_cache):
                cache.mem_side = xbar.slave
      else:
           if not next_cache:
-               print "Error: No next-level cache at top level"
+               print("Error: No next-level cache at top level")
                sys.exit(1)
 
           if ntesters > 1:
@@ -318,4 +320,4 @@ m5.instantiate()
 # Simulate until program terminates
 exit_event = m5.simulate(options.maxtick)
 
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
diff --git a/configs/example/read_config.py b/configs/example/read_config.py
index 7569cd17d..3c17d4b9c 100644
--- a/configs/example/read_config.py
+++ b/configs/example/read_config.py
@@ -45,6 +45,8 @@
 # between system construction and run control may allow better
 # debugging.
 
+from __future__ import print_function
+
 import argparse
 import ConfigParser
 import inspect
@@ -540,5 +542,4 @@ mgr.find_all_objects()
 m5.instantiate(args.checkpoint_dir)
 
 exit_event = m5.simulate()
-print 'Exiting @ tick %i because %s' % (
-    m5.curTick(), exit_event.getCause())
+print('Exiting @ tick %i because %s' % (m5.curTick(), exit_event.getCause()))
diff --git a/configs/example/ruby_direct_test.py b/configs/example/ruby_direct_test.py
index 9e8c87a81..317fb47fd 100644
--- a/configs/example/ruby_direct_test.py
+++ b/configs/example/ruby_direct_test.py
@@ -28,6 +28,8 @@
 # Authors: Ron Dreslinski
 #          Brad Beckmann
 
+from __future__ import print_function
+
 import m5
 from m5.objects import *
 from m5.defines import buildEnv
@@ -65,7 +67,7 @@ Ruby.define_options(parser)
 (options, args) = parser.parse_args()
 
 if args:
-     print "Error: script doesn't take any positional arguments"
+     print("Error: script doesn't take any positional arguments")
      sys.exit(1)
 
 #
@@ -83,7 +85,7 @@ elif options.test_type == "SeriesGetMixed":
 elif options.test_type == "Invalidate":
     generator = InvalidateGenerator(num_cpus = options.num_cpus)
 else:
-    print "Error: unknown direct test generator"
+    print("Error: unknown direct test generator")
     sys.exit(1)
 
 # Create the M5 system.
@@ -130,4 +132,4 @@ m5.instantiate()
 # simulate until program terminates
 exit_event = m5.simulate(options.abs_max_tick)
 
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
diff --git a/configs/example/ruby_gpu_random_test.py b/configs/example/ruby_gpu_random_test.py
index 80aecf90e..4f71cd84a 100644
--- a/configs/example/ruby_gpu_random_test.py
+++ b/configs/example/ruby_gpu_random_test.py
@@ -33,6 +33,8 @@
 #  Author: Brad Beckmann
 #
 
+from __future__ import print_function
+
 import m5
 from m5.objects import *
 from m5.defines import buildEnv
@@ -100,7 +102,7 @@ n_cu = options.num_compute_units
 options.num_sqc = int((n_cu + options.cu_per_sqc - 1) / options.cu_per_sqc)
 
 if args:
-     print "Error: script doesn't take any positional arguments"
+     print("Error: script doesn't take any positional arguments")
      sys.exit(1)
 
 #
@@ -183,4 +185,4 @@ m5.instantiate()
 # simulate until program terminates
 exit_event = m5.simulate(options.abs_max_tick)
 
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
diff --git a/configs/example/ruby_mem_test.py b/configs/example/ruby_mem_test.py
index 010c4a2bc..ab658f787 100644
--- a/configs/example/ruby_mem_test.py
+++ b/configs/example/ruby_mem_test.py
@@ -28,6 +28,8 @@
 # Authors: Ron Dreslinski
 #          Brad Beckmann
 
+from __future__ import print_function
+
 import m5
 from m5.objects import *
 from m5.defines import buildEnv
@@ -81,14 +83,14 @@ options.l2_assoc=2
 options.l3_assoc=2
 
 if args:
-     print "Error: script doesn't take any positional arguments"
+     print("Error: script doesn't take any positional arguments")
      sys.exit(1)
 
 block_size = 64
 
 if options.num_cpus > block_size:
-     print "Error: Number of testers %d limited to %d because of false sharing" \
-           % (options.num_cpus, block_size)
+     print("Error: Number of testers %d limited to %d because of false sharing"
+           % (options.num_cpus, block_size))
      sys.exit(1)
 
 #
@@ -183,4 +185,4 @@ m5.instantiate()
 # simulate until program terminates
 exit_event = m5.simulate(options.abs_max_tick)
 
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
diff --git a/configs/example/ruby_random_test.py b/configs/example/ruby_random_test.py
index d96905e2c..d6b53cf3e 100644
--- a/configs/example/ruby_random_test.py
+++ b/configs/example/ruby_random_test.py
@@ -28,6 +28,8 @@
 # Authors: Ron Dreslinski
 #          Brad Beckmann
 
+from __future__ import print_function
+
 import m5
 from m5.objects import *
 from m5.defines import buildEnv
@@ -75,7 +77,7 @@ options.l2_assoc=2
 options.l3_assoc=2
 
 if args:
-     print "Error: script doesn't take any positional arguments"
+     print("Error: script doesn't take any positional arguments")
      sys.exit(1)
 
 #
@@ -156,4 +158,4 @@ m5.instantiate()
 # simulate until program terminates
 exit_event = m5.simulate(options.abs_max_tick)
 
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
diff --git a/configs/example/se.py b/configs/example/se.py
index 56e4753b9..99d79bc57 100644
--- a/configs/example/se.py
+++ b/configs/example/se.py
@@ -42,6 +42,8 @@
 #
 # "m5 test.py"
 
+from __future__ import print_function
+
 import optparse
 import sys
 import os
@@ -131,7 +133,7 @@ if '--ruby' in sys.argv:
 (options, args) = parser.parse_args()
 
 if args:
-    print "Error: script doesn't take any positional arguments"
+    print("Error: script doesn't take any positional arguments")
     sys.exit(1)
 
 multiprocesses = []
@@ -140,7 +142,7 @@ numThreads = 1
 if options.bench:
     apps = options.bench.split("-")
     if len(apps) != options.num_cpus:
-        print "number of benchmarks not equal to set num_cpus!"
+        print("number of benchmarks not equal to set num_cpus!")
         sys.exit(1)
 
     for app in apps:
@@ -156,13 +158,14 @@ if options.bench:
                         app, options.spec_input))
             multiprocesses.append(workload.makeProcess())
         except:
-            print >>sys.stderr, "Unable to find workload for %s: %s" % (
-                    buildEnv['TARGET_ISA'], app)
+            print("Unable to find workload for %s: %s" %
+                  (buildEnv['TARGET_ISA'], app),
+                  file=sys.stderr)
             sys.exit(1)
 elif options.cmd:
     multiprocesses, numThreads = get_processes(options)
 else:
-    print >> sys.stderr, "No workload specified. Exiting!\n"
+    print("No workload specified. Exiting!\n", file=sys.stderr)
     sys.exit(1)