b9c7b8190c
This patch detects garnet network deadlock by monitoring network interfaces. If a network interface continuously fails to allocate virtual channels for a message, a possible deadlock is detected.
73 lines
3.6 KiB
Python
73 lines
3.6 KiB
Python
# Copyright (c) 2008 Princeton University
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# Copyright (c) 2009 Advanced Micro Devices, Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Author: Tushar Krishna
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#
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from m5.params import *
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from m5.proxy import *
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from Network import RubyNetwork
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from BasicRouter import BasicRouter
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from ClockedObject import ClockedObject
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class GarnetNetwork(RubyNetwork):
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type = 'GarnetNetwork'
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cxx_header = "mem/ruby/network/garnet2.0/GarnetNetwork.hh"
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num_rows = Param.Int(0, "number of rows if 2D (mesh/torus/..) topology");
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ni_flit_size = Param.UInt32(16, "network interface flit size in bytes")
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vcs_per_vnet = Param.UInt32(4, "virtual channels per virtual network");
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buffers_per_data_vc = Param.UInt32(4, "buffers per data virtual channel");
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buffers_per_ctrl_vc = Param.UInt32(1, "buffers per ctrl virtual channel");
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routing_algorithm = Param.Int(0,
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"0: Weight-based Table, 1: XY, 2: Custom");
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enable_fault_model = Param.Bool(False, "enable network fault model");
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fault_model = Param.FaultModel(NULL, "network fault model");
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garnet_deadlock_threshold = Param.UInt32(50000,
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"network-level deadlock threshold")
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class GarnetNetworkInterface(ClockedObject):
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type = 'GarnetNetworkInterface'
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cxx_class = 'NetworkInterface'
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cxx_header = "mem/ruby/network/garnet2.0/NetworkInterface.hh"
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id = Param.UInt32("ID in relation to other network interfaces")
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vcs_per_vnet = Param.UInt32(Parent.vcs_per_vnet,
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"virtual channels per virtual network")
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virt_nets = Param.UInt32(Parent.number_of_virtual_networks,
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"number of virtual networks")
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garnet_deadlock_threshold = Param.UInt32(Parent.garnet_deadlock_threshold,
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"network-level deadlock threshold")
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class GarnetRouter(BasicRouter):
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type = 'GarnetRouter'
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cxx_class = 'Router'
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cxx_header = "mem/ruby/network/garnet2.0/Router.hh"
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vcs_per_vnet = Param.UInt32(Parent.vcs_per_vnet,
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"virtual channels per virtual network")
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virt_nets = Param.UInt32(Parent.number_of_virtual_networks,
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"number of virtual networks")
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