from m5.defines import buildEnv
from m5.util import addToPath, fatal
+import MemConfig
addToPath('../topologies')
def define_options(parser):
default='2GHz',
help="Clock for blocks running at Ruby system's speed")
+ parser.add_option("--access-backing-store", action="store_true", default=False,
+ help="Should ruby maintain a second copy of memory")
+
# Options related to cache structure
parser.add_option("--ports", action="store", type="int", default=4,
help="used of transitions per cycle which is a proxy \
help="high order address bit to use for numa mapping. " \
"0 = highest bit, not specified = lowest bit")
- # ruby sparse memory options
- parser.add_option("--use-map", action="store_true", default=False)
- parser.add_option("--map-levels", type="int", default=4)
-
parser.add_option("--recycle-latency", type="int", default=10,
help="Recycle latency for ruby controller input buffers")
parser.add_option("--random_seed", type="int", default=1234,
help="Used for seeding the random number generator")
- parser.add_option("--ruby_stats", type="string", default="ruby.stats")
-
protocol = buildEnv['PROTOCOL']
exec "import %s" % protocol
eval("%s.define_options(parser)" % protocol)
+def setup_memory_controllers(system, ruby, dir_cntrls, options):
+ ruby.block_size_bytes = options.cacheline_size
+ ruby.memory_size_bits = 48
+ block_size_bits = int(math.log(options.cacheline_size, 2))
+
+ if options.numa_high_bit:
+ numa_bit = options.numa_high_bit
+ else:
+ # if the numa_bit is not specified, set the directory bits as the
+ # lowest bits above the block offset bits, and the numa_bit as the
+ # highest of those directory bits
+ dir_bits = int(math.log(options.num_dirs, 2))
+ numa_bit = block_size_bits + dir_bits - 1
+
+ index = 0
+ mem_ctrls = []
+ crossbars = []
+
+ # Sets bits to be used for interleaving. Creates memory controllers
+ # attached to a directory controller. A separate controller is created
+ # for each address range as the abstract memory can handle only one
+ # contiguous address range as of now.
+ for dir_cntrl in dir_cntrls:
+ dir_cntrl.directory.numa_high_bit = numa_bit
+
+ crossbar = None
+ if len(system.mem_ranges) > 1:
+ crossbar = NoncoherentXBar()
+ crossbars.append(crossbar)
+ dir_cntrl.memory = crossbar.slave
+
+ for r in system.mem_ranges:
+ mem_ctrl = MemConfig.create_mem_ctrl(
+ MemConfig.get(options.mem_type), r, index, options.num_dirs,
+ int(math.log(options.num_dirs, 2)), options.cacheline_size)
+
+ mem_ctrls.append(mem_ctrl)
+
+ if crossbar != None:
+ mem_ctrl.port = crossbar.master
+ else:
+ mem_ctrl.port = dir_cntrl.memory
+
+ index += 1
+
+ system.mem_ctrls = mem_ctrls
+
+ if len(crossbars) > 0:
+ ruby.crossbars = crossbars
+
+
def create_topology(controllers, options):
""" Called from create_system in configs/ruby/<protocol>.py
Must return an object which is a subclass of BaseTopology
topology = eval("Topo.%s(controllers)" % options.topology)
return topology
-def create_system(options, system, piobus = None, dma_ports = []):
+def create_system(options, full_system, system, piobus = None, dma_ports = []):
- system.ruby = RubySystem(no_mem_vec = options.use_map)
+ system.ruby = RubySystem()
ruby = system.ruby
# Set the network classes based on the command line options
exec "import %s" % protocol
try:
(cpu_sequencers, dir_cntrls, topology) = \
- eval("%s.create_system(options, system, dma_ports, ruby)"
+ eval("%s.create_system(options, full_system, system, dma_ports,\
+ ruby)"
% protocol)
except:
print "Error: could not create sytem for ruby protocol %s" % protocol
network.enable_fault_model = True
network.fault_model = FaultModel()
- # Loop through the directory controlers.
- # Determine the total memory size of the ruby system and verify it is equal
- # to physmem. However, if Ruby memory is using sparse memory in SE
- # mode, then the system should not back-up the memory state with
- # the Memory Vector and thus the memory size bytes should stay at 0.
- # Also set the numa bits to the appropriate values.
- total_mem_size = MemorySize('0B')
-
- ruby.block_size_bytes = options.cacheline_size
- block_size_bits = int(math.log(options.cacheline_size, 2))
-
- if options.numa_high_bit:
- numa_bit = options.numa_high_bit
- else:
- # if the numa_bit is not specified, set the directory bits as the
- # lowest bits above the block offset bits, and the numa_bit as the
- # highest of those directory bits
- dir_bits = int(math.log(options.num_dirs, 2))
- numa_bit = block_size_bits + dir_bits - 1
-
- for dir_cntrl in dir_cntrls:
- total_mem_size.value += dir_cntrl.directory.size.value
- dir_cntrl.directory.numa_high_bit = numa_bit
-
- phys_mem_size = sum(map(lambda r: r.size(), system.mem_ranges))
- assert(total_mem_size.value == phys_mem_size)
- ruby.mem_size = total_mem_size
+ setup_memory_controllers(system, ruby, dir_cntrls, options)
# Connect the cpu sequencers and the piobus
if piobus != None:
ruby._cpu_ports = cpu_sequencers
ruby.num_of_sequencers = len(cpu_sequencers)
ruby.random_seed = options.random_seed
+
+ # Create a backing copy of physical memory in case required
+ if options.access_backing_store:
+ ruby.phys_mem = SimpleMemory(range=AddrRange(options.mem_size),
+ in_addr_map=False)
projects / gem5.git / blobdiff