ruby_mem_test.py revision 13731
1# Copyright (c) 2006-2007 The Regents of The University of Michigan 2# Copyright (c) 2009 Advanced Micro Devices, Inc. 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions are 7# met: redistributions of source code must retain the above copyright 8# notice, this list of conditions and the following disclaimer; 9# redistributions in binary form must reproduce the above copyright 10# notice, this list of conditions and the following disclaimer in the 11# documentation and/or other materials provided with the distribution; 12# neither the name of the copyright holders nor the names of its 13# contributors may be used to endorse or promote products derived from 14# this software without specific prior written permission. 15# 16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27# 28# Authors: Ron Dreslinski 29# Brad Beckmann 30 31from __future__ import print_function 32 33import m5 34from m5.objects import * 35from m5.defines import buildEnv 36from m5.util import addToPath 37import os, optparse, sys 38 39addToPath('../') 40 41from common import Options 42from ruby import Ruby 43 44# Get paths we might need. It's expected this file is in m5/configs/example. 45config_path = os.path.dirname(os.path.abspath(__file__)) 46config_root = os.path.dirname(config_path) 47 48parser = optparse.OptionParser() 49Options.addNoISAOptions(parser) 50 51parser.add_option("--maxloads", metavar="N", default=0, 52 help="Stop after N loads") 53parser.add_option("--progress", type="int", default=1000, 54 metavar="NLOADS", 55 help="Progress message interval " 56 "[default: %default]") 57parser.add_option("--num-dmas", type="int", default=0, help="# of dma testers") 58parser.add_option("--functional", type="int", default=0, 59 help="percentage of accesses that should be functional") 60parser.add_option("--suppress-func-warnings", action="store_true", 61 help="suppress warnings when functional accesses fail") 62 63# 64# Add the ruby specific and protocol specific options 65# 66Ruby.define_options(parser) 67 68exec(compile( \ 69 open(os.path.join(config_root, "common", "Options.py")).read(), \ 70 os.path.join(config_root, "common", "Options.py"), 'exec')) 71 72(options, args) = parser.parse_args() 73 74# 75# Set the default cache size and associativity to be very small to encourage 76# races between requests and writebacks. 77# 78options.l1d_size="256B" 79options.l1i_size="256B" 80options.l2_size="512B" 81options.l3_size="1kB" 82options.l1d_assoc=2 83options.l1i_assoc=2 84options.l2_assoc=2 85options.l3_assoc=2 86 87if args: 88 print("Error: script doesn't take any positional arguments") 89 sys.exit(1) 90 91block_size = 64 92 93if options.num_cpus > block_size: 94 print("Error: Number of testers %d limited to %d because of false sharing" 95 % (options.num_cpus, block_size)) 96 sys.exit(1) 97 98# 99# Currently ruby does not support atomic or uncacheable accesses 100# 101cpus = [ MemTest(max_loads = options.maxloads, 102 percent_functional = options.functional, 103 percent_uncacheable = 0, 104 progress_interval = options.progress, 105 suppress_func_warnings = options.suppress_func_warnings) \ 106 for i in range(options.num_cpus) ] 107 108system = System(cpu = cpus, 109 clk_domain = SrcClockDomain(clock = options.sys_clock), 110 mem_ranges = [AddrRange(options.mem_size)]) 111 112if options.num_dmas > 0: 113 dmas = [ MemTest(max_loads = options.maxloads, 114 percent_functional = 0, 115 percent_uncacheable = 0, 116 progress_interval = options.progress, 117 suppress_func_warnings = 118 not options.suppress_func_warnings) \ 119 for i in range(options.num_dmas) ] 120 system.dma_devices = dmas 121else: 122 dmas = [] 123 124dma_ports = [] 125for (i, dma) in enumerate(dmas): 126 dma_ports.append(dma.test) 127Ruby.create_system(options, False, system, dma_ports = dma_ports) 128 129# Create a top-level voltage domain and clock domain 130system.voltage_domain = VoltageDomain(voltage = options.sys_voltage) 131system.clk_domain = SrcClockDomain(clock = options.sys_clock, 132 voltage_domain = system.voltage_domain) 133# Create a seperate clock domain for Ruby 134system.ruby.clk_domain = SrcClockDomain(clock = options.ruby_clock, 135 voltage_domain = system.voltage_domain) 136 137# 138# The tester is most effective when randomization is turned on and 139# artifical delay is randomly inserted on messages 140# 141system.ruby.randomization = True 142 143assert(len(cpus) == len(system.ruby._cpu_ports)) 144 145for (i, cpu) in enumerate(cpus): 146 # 147 # Tie the cpu memtester ports to the correct system ports 148 # 149 cpu.port = system.ruby._cpu_ports[i].slave 150 151 # 152 # Since the memtester is incredibly bursty, increase the deadlock 153 # threshold to 5 million cycles 154 # 155 system.ruby._cpu_ports[i].deadlock_threshold = 5000000 156 157# ----------------------- 158# run simulation 159# ----------------------- 160 161root = Root( full_system = False, system = system ) 162root.system.mem_mode = 'timing' 163 164# Not much point in this being higher than the L1 latency 165m5.ticks.setGlobalFrequency('1ns') 166 167# instantiate configuration 168m5.instantiate() 169 170# simulate until program terminates 171exit_event = m5.simulate(options.abs_max_tick) 172 173print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()) 174