MeshDirCorners_XY.py revision 11663
111663Stushar@ece.gatech.edu# Copyright (c) 2010 Advanced Micro Devices, Inc. 211663Stushar@ece.gatech.edu# All rights reserved. 311663Stushar@ece.gatech.edu# 411663Stushar@ece.gatech.edu# Redistribution and use in source and binary forms, with or without 511663Stushar@ece.gatech.edu# modification, are permitted provided that the following conditions are 611663Stushar@ece.gatech.edu# met: redistributions of source code must retain the above copyright 711663Stushar@ece.gatech.edu# notice, this list of conditions and the following disclaimer; 811663Stushar@ece.gatech.edu# redistributions in binary form must reproduce the above copyright 911663Stushar@ece.gatech.edu# notice, this list of conditions and the following disclaimer in the 1011663Stushar@ece.gatech.edu# documentation and/or other materials provided with the distribution; 1111663Stushar@ece.gatech.edu# neither the name of the copyright holders nor the names of its 1211663Stushar@ece.gatech.edu# contributors may be used to endorse or promote products derived from 1311663Stushar@ece.gatech.edu# this software without specific prior written permission. 1411663Stushar@ece.gatech.edu# 1511663Stushar@ece.gatech.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1611663Stushar@ece.gatech.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1711663Stushar@ece.gatech.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1811663Stushar@ece.gatech.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 1911663Stushar@ece.gatech.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2011663Stushar@ece.gatech.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2111663Stushar@ece.gatech.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2211663Stushar@ece.gatech.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2311663Stushar@ece.gatech.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2411663Stushar@ece.gatech.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2511663Stushar@ece.gatech.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2611663Stushar@ece.gatech.edu# 2711663Stushar@ece.gatech.edu# Authors: Brad Beckmann 2811663Stushar@ece.gatech.edu 2911663Stushar@ece.gatech.edufrom m5.params import * 3011663Stushar@ece.gatech.edufrom m5.objects import * 3111663Stushar@ece.gatech.edu 3211663Stushar@ece.gatech.edufrom BaseTopology import SimpleTopology 3311663Stushar@ece.gatech.edu 3411663Stushar@ece.gatech.edu# Creates a Mesh topology with 4 directories, one at each corner. 3511663Stushar@ece.gatech.edu# One L1 (and L2, depending on the protocol) are connected to each router. 3611663Stushar@ece.gatech.edu# XY routing is enforced (using link weights) to guarantee deadlock freedom. 3711663Stushar@ece.gatech.edu 3811663Stushar@ece.gatech.educlass MeshDirCorners_XY(SimpleTopology): 3911663Stushar@ece.gatech.edu description='MeshDirCorners_XY' 4011663Stushar@ece.gatech.edu 4111663Stushar@ece.gatech.edu def __init__(self, controllers): 4211663Stushar@ece.gatech.edu self.nodes = controllers 4311663Stushar@ece.gatech.edu 4411663Stushar@ece.gatech.edu def makeTopology(self, options, network, IntLink, ExtLink, Router): 4511663Stushar@ece.gatech.edu nodes = self.nodes 4611663Stushar@ece.gatech.edu 4711663Stushar@ece.gatech.edu num_routers = options.num_cpus 4811663Stushar@ece.gatech.edu num_rows = options.mesh_rows 4911663Stushar@ece.gatech.edu 5011663Stushar@ece.gatech.edu # First determine which nodes are cache cntrls vs. dirs vs. dma 5111663Stushar@ece.gatech.edu cache_nodes = [] 5211663Stushar@ece.gatech.edu dir_nodes = [] 5311663Stushar@ece.gatech.edu dma_nodes = [] 5411663Stushar@ece.gatech.edu for node in nodes: 5511663Stushar@ece.gatech.edu if node.type == 'L1Cache_Controller' or \ 5611663Stushar@ece.gatech.edu node.type == 'L2Cache_Controller': 5711663Stushar@ece.gatech.edu cache_nodes.append(node) 5811663Stushar@ece.gatech.edu elif node.type == 'Directory_Controller': 5911663Stushar@ece.gatech.edu dir_nodes.append(node) 6011663Stushar@ece.gatech.edu elif node.type == 'DMA_Controller': 6111663Stushar@ece.gatech.edu dma_nodes.append(node) 6211663Stushar@ece.gatech.edu 6311663Stushar@ece.gatech.edu # Obviously the number or rows must be <= the number of routers 6411663Stushar@ece.gatech.edu # and evenly divisible. Also the number of caches must be a 6511663Stushar@ece.gatech.edu # multiple of the number of routers and the number of directories 6611663Stushar@ece.gatech.edu # must be four. 6711663Stushar@ece.gatech.edu assert(num_rows <= num_routers) 6811663Stushar@ece.gatech.edu num_columns = int(num_routers / num_rows) 6911663Stushar@ece.gatech.edu assert(num_columns * num_rows == num_routers) 7011663Stushar@ece.gatech.edu caches_per_router, remainder = divmod(len(cache_nodes), num_routers) 7111663Stushar@ece.gatech.edu assert(remainder == 0) 7211663Stushar@ece.gatech.edu assert(len(dir_nodes) == 4) 7311663Stushar@ece.gatech.edu 7411663Stushar@ece.gatech.edu # Create the routers in the mesh 7511663Stushar@ece.gatech.edu routers = [Router(router_id=i) for i in range(num_routers)] 7611663Stushar@ece.gatech.edu network.routers = routers 7711663Stushar@ece.gatech.edu 7811663Stushar@ece.gatech.edu # link counter to set unique link ids 7911663Stushar@ece.gatech.edu link_count = 0 8011663Stushar@ece.gatech.edu 8111663Stushar@ece.gatech.edu # Connect each cache controller to the appropriate router 8211663Stushar@ece.gatech.edu ext_links = [] 8311663Stushar@ece.gatech.edu for (i, n) in enumerate(cache_nodes): 8411663Stushar@ece.gatech.edu cntrl_level, router_id = divmod(i, num_routers) 8511663Stushar@ece.gatech.edu assert(cntrl_level < caches_per_router) 8611663Stushar@ece.gatech.edu ext_links.append(ExtLink(link_id=link_count, ext_node=n, 8711663Stushar@ece.gatech.edu int_node=routers[router_id])) 8811663Stushar@ece.gatech.edu link_count += 1 8911663Stushar@ece.gatech.edu 9011663Stushar@ece.gatech.edu # Connect the dir nodes to the corners. 9111663Stushar@ece.gatech.edu ext_links.append(ExtLink(link_id=link_count, ext_node=dir_nodes[0], 9211663Stushar@ece.gatech.edu int_node=routers[0])) 9311663Stushar@ece.gatech.edu link_count += 1 9411663Stushar@ece.gatech.edu ext_links.append(ExtLink(link_id=link_count, ext_node=dir_nodes[1], 9511663Stushar@ece.gatech.edu int_node=routers[num_columns - 1])) 9611663Stushar@ece.gatech.edu link_count += 1 9711663Stushar@ece.gatech.edu ext_links.append(ExtLink(link_id=link_count, ext_node=dir_nodes[2], 9811663Stushar@ece.gatech.edu int_node=routers[num_routers - num_columns])) 9911663Stushar@ece.gatech.edu link_count += 1 10011663Stushar@ece.gatech.edu ext_links.append(ExtLink(link_id=link_count, ext_node=dir_nodes[3], 10111663Stushar@ece.gatech.edu int_node=routers[num_routers - 1])) 10211663Stushar@ece.gatech.edu link_count += 1 10311663Stushar@ece.gatech.edu 10411663Stushar@ece.gatech.edu # Connect the dma nodes to router 0. These should only be DMA nodes. 10511663Stushar@ece.gatech.edu for (i, node) in enumerate(dma_nodes): 10611663Stushar@ece.gatech.edu assert(node.type == 'DMA_Controller') 10711663Stushar@ece.gatech.edu ext_links.append(ExtLink(link_id=link_count, ext_node=node, 10811663Stushar@ece.gatech.edu int_node=routers[0])) 10911663Stushar@ece.gatech.edu 11011663Stushar@ece.gatech.edu network.ext_links = ext_links 11111663Stushar@ece.gatech.edu 11211663Stushar@ece.gatech.edu # Create the mesh links. 11311663Stushar@ece.gatech.edu int_links = [] 11411663Stushar@ece.gatech.edu 11511663Stushar@ece.gatech.edu # East output to West input links (weight = 1) 11611663Stushar@ece.gatech.edu for row in xrange(num_rows): 11711663Stushar@ece.gatech.edu for col in xrange(num_columns): 11811663Stushar@ece.gatech.edu if (col + 1 < num_columns): 11911663Stushar@ece.gatech.edu east_out = col + (row * num_columns) 12011663Stushar@ece.gatech.edu west_in = (col + 1) + (row * num_columns) 12111663Stushar@ece.gatech.edu int_links.append(IntLink(link_id=link_count, 12211663Stushar@ece.gatech.edu src_node=routers[east_out], 12311663Stushar@ece.gatech.edu dst_node=routers[west_in], 12411663Stushar@ece.gatech.edu weight=1)) 12511663Stushar@ece.gatech.edu link_count += 1 12611663Stushar@ece.gatech.edu 12711663Stushar@ece.gatech.edu # West output to East input links (weight = 1) 12811663Stushar@ece.gatech.edu for row in xrange(num_rows): 12911663Stushar@ece.gatech.edu for col in xrange(num_columns): 13011663Stushar@ece.gatech.edu if (col + 1 < num_columns): 13111663Stushar@ece.gatech.edu east_in = col + (row * num_columns) 13211663Stushar@ece.gatech.edu west_out = (col + 1) + (row * num_columns) 13311663Stushar@ece.gatech.edu int_links.append(IntLink(link_id=link_count, 13411663Stushar@ece.gatech.edu src_node=routers[west_out], 13511663Stushar@ece.gatech.edu dst_node=routers[east_in], 13611663Stushar@ece.gatech.edu weight=1)) 13711663Stushar@ece.gatech.edu link_count += 1 13811663Stushar@ece.gatech.edu 13911663Stushar@ece.gatech.edu # North output to South input links (weight = 2) 14011663Stushar@ece.gatech.edu for col in xrange(num_columns): 14111663Stushar@ece.gatech.edu for row in xrange(num_rows): 14211663Stushar@ece.gatech.edu if (row + 1 < num_rows): 14311663Stushar@ece.gatech.edu north_out = col + (row * num_columns) 14411663Stushar@ece.gatech.edu south_in = col + ((row + 1) * num_columns) 14511663Stushar@ece.gatech.edu int_links.append(IntLink(link_id=link_count, 14611663Stushar@ece.gatech.edu src_node=routers[north_out], 14711663Stushar@ece.gatech.edu dst_node=routers[south_in], 14811663Stushar@ece.gatech.edu weight=2)) 14911663Stushar@ece.gatech.edu link_count += 1 15011663Stushar@ece.gatech.edu 15111663Stushar@ece.gatech.edu # South output to North input links (weight = 2) 15211663Stushar@ece.gatech.edu for col in xrange(num_columns): 15311663Stushar@ece.gatech.edu for row in xrange(num_rows): 15411663Stushar@ece.gatech.edu if (row + 1 < num_rows): 15511663Stushar@ece.gatech.edu north_in = col + (row * num_columns) 15611663Stushar@ece.gatech.edu south_out = col + ((row + 1) * num_columns) 15711663Stushar@ece.gatech.edu int_links.append(IntLink(link_id=link_count, 15811663Stushar@ece.gatech.edu src_node=routers[south_out], 15911663Stushar@ece.gatech.edu dst_node=routers[north_in], 16011663Stushar@ece.gatech.edu weight=2)) 16111663Stushar@ece.gatech.edu link_count += 1 16211663Stushar@ece.gatech.edu 16311663Stushar@ece.gatech.edu 16411663Stushar@ece.gatech.edu network.int_links = int_links 165