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diff --git a/tests/configs/simple-atomic-mp.py b/tests/configs/simple-atomic-mp.py
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+# Copyright (c) 2006 The Regents of The University of Michigan
+# 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.
+#
+# Authors: Ron Dreslinski
+
+import m5
+from m5.objects import *
+
+# --------------------
+# Base L1 Cache
+# ====================
+
+class L1(BaseCache):
+    latency = 1
+    block_size = 64
+    mshrs = 4
+    tgts_per_mshr = 8
+    protocol = CoherenceProtocol(protocol='moesi')
+
+# ----------------------
+# Base L2 Cache
+# ----------------------
+
+class L2(BaseCache):
+    block_size = 64
+    latency = 100
+    mshrs = 92
+    tgts_per_mshr = 16
+    write_buffers = 8
+
+nb_cores = 4
+cpus = [ AtomicSimpleCPU(cpu_id=i) for i in xrange(nb_cores) ]
+
+# system simulated
+system = System(cpu = cpus, physmem = PhysicalMemory(range = AddrRange('1024MB')), membus =
+Bus())
+
+# l2cache & bus
+system.toL2Bus = Bus()
+system.l2c = L2(size='4MB', assoc=8)
+system.l2c.cpu_side = system.toL2Bus.port
+
+# connect l2c to membus
+system.l2c.mem_side = system.membus.port
+
+# add L1 caches
+for cpu in cpus:
+    cpu.addPrivateSplitL1Caches(L1(size = '32kB', assoc = 1),
+                                L1(size = '32kB', assoc = 4))
+    cpu.mem = cpu.dcache
+    # connect cpu level-1 caches to shared level-2 cache
+    cpu.connectMemPorts(system.toL2Bus)
+
+# connect memory to membus
+system.physmem.port = system.membus.port
+
+
+# -----------------------
+# run simulation
+# -----------------------
+
+root = Root( system = system )
+root.system.mem_mode = 'atomic'