mem: tester for new HMC configuration

This patch provides the example test script to configure different HMC
architecture and run traffic through traffic generator.

Committed by Jason Lowe-Power <jason@lowepower.com>

configs/example/hmctest.py

@@ -0,0 +1,170 @@
+import optparse
+import sys
+import subprocess
+
+import m5
+from m5.objects import *
+from m5.util import addToPath
+
+addToPath('../common')
+import MemConfig
+import HMC
+
+parser = optparse.OptionParser()
+
+# Use a HMC_2500_x32 by default
+parser.add_option("--mem-type", type = "choice", default = "HMC_2500_x32",
+                  choices = MemConfig.mem_names(),
+                  help = "type of memory to use")
+
+parser.add_option("--ranks", "-r", type = "int", default = 1,
+                  help = "Number of ranks to iterate across")
+
+parser.add_option("--rd_perc", type ="int", default=100,
+                  help = "Percentage of read commands")
+
+parser.add_option("--mode", type ="choice", default ="DRAM",
+                  choices = ["DRAM", "DRAM_ROTATE", "RANDOM"],
+                  help = "DRAM: Random traffic; \
+                          DRAM_ROTATE: Traffic rotating across banks and ranks"
+                          )
+
+parser.add_option("--addr_map", type ="int", default = 1,
+                  help = "0: RoCoRaBaCh; 1: RoRaBaCoCh/RoRaBaChCo")
+
+parser.add_option("--arch", type = "choice", default = "distributed",
+                  choices = ["same", "distributed", "mixed"],
+                  help = "same: HMC-4 links with same range\
+                  distributed: HMC-4 links with distributed range\
+                  mixed: mixed with same & distributed range")
+
+parser.add_option("--linkaggr", type = "int", default = 0,
+                  help = "1: enable link crossbar, 0: disable link crossbar")
+
+parser.add_option("--num_cross", type = "int", default = 4,
+                  help = "1: number of crossbar in HMC=1;\
+                  4: number of crossbar = 4")
+
+parser.add_option("--tlm-memory", type = "string",
+                  help="use external port for SystemC TLM cosimulation")
+
+parser.add_option("--elastic-trace-en", action ="store_true",
+                  help = """Enable capture of data dependency and instruction
+                  fetch traces using elastic trace probe.""")
+
+(options, args) = parser.parse_args()
+
+if args:
+    print "Error: script doesn't take any positional arguments"
+    sys.exit(1)
+
+system = System()
+system.clk_domain = SrcClockDomain(clock='100GHz',
+                                   voltage_domain=
+                                   VoltageDomain(voltage = '1V'))
+# Create additional crossbar for arch1
+if options.arch == "distributed" or options.arch == "mixed" :
+    system.membus = NoncoherentXBar( width=8 )
+    system.membus.badaddr_responder = BadAddr()
+    system.membus.default = Self.badaddr_responder.pio
+    system.membus.width = 8
+    system.membus.frontend_latency = 3
+    system.membus.forward_latency = 4
+    system.membus.response_latency = 2
+
+    system.membus.clk_domain = SrcClockDomain(clock='100GHz', voltage_domain=
+            VoltageDomain(voltage = '1V'))
+
+# we are considering 4GB HMC device with following parameters
+# hmc_device_size = '4GB'
+# hmc_num_vaults = 16
+# hmc_vault_size = '256MB'
+# hmc_stack_size = 8
+# hmc_bank_in_stack = 2
+# hmc_bank_size = '16MB'
+# hmc_bank_in_vault = 16
+
+# determine the burst length in bytes
+burst_size = 256
+num_serial_links = 4
+num_vault_ctrl = 16
+options.mem_channels = 1
+options.external_memory_system = 0
+options.mem_ranks=1
+stride_size = burst_size
+system.cache_line_size = burst_size
+
+# Enable performance monitoring
+options.enable_global_monitor = True
+options.enable_link_monitor = False
+
+# Bytes used for calculations
+oneGBytes = 1024 * 1024 * 1024
+oneMBytes = 1024 * 1024
+
+# Memory ranges of 16 vault controller - Total_HMC_size / 16
+mem_range_vault = [ AddrRange(i * 256 * oneMBytes, ((i + 1) * 256 * oneMBytes)
+    - 1)
+        for i in range(num_vault_ctrl)]
+
+# Memmory ranges of serial link for arch-0
+# Same as the ranges of vault controllers - 4 vault - to - 1 serial link
+if options.arch == "same":
+    ser_range  = [ AddrRange(0, (4 * oneGBytes) - 1)
+            for i in range(num_serial_links)]
+    options.ser_ranges = ser_range
+
+# Memmory ranges of serial link for arch-1
+# Distributed range accross links
+if options.arch == "distributed":
+    ser_range  = [ AddrRange(i * oneGBytes, ((i + 1) * oneGBytes) - 1)
+            for i in range(num_serial_links)]
+    options.ser_ranges = ser_range
+
+# Memmory ranges of serial link for arch-2
+# "Mixed" address distribution over links
+if options.arch == "mixed":
+    ser_range0  = AddrRange(0              , (1 * oneGBytes) - 1)
+    ser_range1  = AddrRange(1 * oneGBytes  , (2 * oneGBytes) - 1)
+    ser_range2  = AddrRange(0              , (4 * oneGBytes) - 1)
+    ser_range3  = AddrRange(0              , (4 * oneGBytes) - 1)
+    options.ser_ranges = [ser_range0, ser_range1, ser_range2, ser_range3]
+
+# Assign ranges of vault controller to system ranges
+system.mem_ranges = mem_range_vault
+
+# open traffic generator
+cfg_file_name = "./tests/quick/se/70.tgen/traffic.cfg"
+cfg_file = open(cfg_file_name, 'r')
+
+# number of traffic generator
+np = 4
+# create a traffic generator, and point it to the file we just created
+system.tgen = [ TrafficGen(config_file = cfg_file_name) for i in xrange(np)]
+
+# Config memory system with given HMC arch
+MemConfig.config_mem(options, system)
+
+if options.arch == "distributed":
+    for i in xrange(np):
+        system.tgen[i].port = system.membus.slave
+    # connect the system port even if it is not used in this example
+    system.system_port = system.membus.slave
+
+if options.arch == "mixed":
+    for i in xrange(int(np/2)):
+        system.tgen[i].port = system.membus.slave
+    # connect the system port even if it is not used in this example
+    system.system_port = system.membus.slave
+
+
+# run Forrest, run!
+root = Root(full_system = False, system = system)
+root.system.mem_mode = 'timing'
+
+m5.instantiate()
+m5.simulate(10000000000)
+
+m5.stats.dump()
+
+print "Done!"

tests/quick/se/70.tgen/traffic.cfg

@@ -0,0 +1,7 @@
+STATE 0 10000 RANDOM 100 0 134217727 256 1000 1000 0
+STATE 1 1000000 TRACE tests/quick/se/70.tgen/tgen-simple-mem.trc 100
+STATE 2 1000 IDLE
+INIT 0
+TRANSITION 0 1 1
+TRANSITION 1 2 1
+TRANSITION 2 0 1