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dev: Distributed Ethernet link for distributed gem5 simulations

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Distributed gem5 (abbreviated dist-gem5) is the result of the
convergence effort between multi-gem5 and pd-gem5 (from Univ. of
Wisconsin). It relies on the base multi-gem5 infrastructure for packet
forwarding, synchronisation and checkpointing but combines those with
the elaborated network switch model from pd-gem5.

--HG--
rename : src/dev/net/multi_etherlink.cc => src/dev/net/dist_etherlink.cc
rename : src/dev/net/multi_etherlink.hh => src/dev/net/dist_etherlink.hh
rename : src/dev/net/multi_iface.cc => src/dev/net/dist_iface.cc
rename : src/dev/net/multi_iface.hh => src/dev/net/dist_iface.hh
rename : src/dev/net/multi_packet.hh => src/dev/net/dist_packet.hh
This commit is contained in:
Gabor Dozsa
2016-01-07 16:33:47 -06:00
parent e677494260
commit 5dec4e07b8
19 changed files with 1880 additions and 2227 deletions
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2
src/sim/global_event.hh
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@@ -219,7 +219,7 @@ class GlobalSyncEvent : public BaseGlobalEventTemplate<GlobalSyncEvent>
};
GlobalSyncEvent(Priority p, Flags f)
: Base(p, f)
: Base(p, f), repeat(0)
{ }
GlobalSyncEvent(Tick when, Tick _repeat, Priority p, Flags f)

70
src/sim/initparam_keys.hh Normal file
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@@ -0,0 +1,70 @@
/*
* Copyright (c) 2015 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabor Dozsa
*/
/* @file
* Magic key definitions for the InitParam pseudo inst
*/
#ifndef ___SIM_INITPARAM_KEYS_HH__
#define ___SIM_INITPARAM_KEYS_HH__
namespace PseudoInst {
/**
* Unique keys to retrieve various params by the initParam pseudo inst.
*
* @note Each key must be shorter than 16 characters (because we use
* two 64-bit registers two pass in the key to the initparam function)
*/
struct InitParamKey
{
/**
* The default key (empty string)
*/
static constexpr const char *DEFAULT = "";
/**
* Unique key for "rank" param (distributed gem5 runs)
*/
static constexpr const char *DIST_RANK = "dist-rank";
/**
* Unique key for "size" param (distributed gem5 runs)
*/
static constexpr const char *DIST_SIZE = "dist-size";
};
} // namespace PseudoInst
#endif

25
src/sim/pseudo_inst.cc
View File

@@ -63,8 +63,10 @@
#include "debug/PseudoInst.hh"
#include "debug/Quiesce.hh"
#include "debug/WorkItems.hh"
#include "dev/net/dist_iface.hh"
#include "params/BaseCPU.hh"
#include "sim/full_system.hh"
#include "sim/initparam_keys.hh"
#include "sim/process.hh"
#include "sim/pseudo_inst.hh"
#include "sim/serialize.hh"
@@ -357,8 +359,10 @@ void
m5exit(ThreadContext *tc, Tick delay)
{
DPRINTF(PseudoInst, "PseudoInst::m5exit(%i)\n", delay);
Tick when = curTick() + delay * SimClock::Int::ns;
exitSimLoop("m5_exit instruction encountered", 0, when, 0, true);
if (DistIface::readyToExit(delay)) {
Tick when = curTick() + delay * SimClock::Int::ns;
exitSimLoop("m5_exit instruction encountered", 0, when, 0, true);
}
}
void
@@ -471,10 +475,14 @@ initParam(ThreadContext *tc, uint64_t key_str1, uint64_t key_str2)
// Compare the key parameter with the known values to select the return
// value
uint64_t val;
if (strlen(key_str) == 0) {
if (strcmp(key_str, InitParamKey::DEFAULT) == 0) {
val = tc->getCpuPtr()->system->init_param;
} else if (strcmp(key_str, InitParamKey::DIST_RANK) == 0) {
val = DistIface::rankParam();
} else if (strcmp(key_str, InitParamKey::DIST_SIZE) == 0) {
val = DistIface::sizeParam();
} else {
panic("Unknown key for initparam pseudo instruction");
panic("Unknown key for initparam pseudo instruction:\"%s\"", key_str);
}
return val;
}
@@ -529,10 +537,11 @@ m5checkpoint(ThreadContext *tc, Tick delay, Tick period)
if (!tc->getCpuPtr()->params()->do_checkpoint_insts)
return;
Tick when = curTick() + delay * SimClock::Int::ns;
Tick repeat = period * SimClock::Int::ns;
exitSimLoop("checkpoint", 0, when, repeat);
if (DistIface::readyToCkpt(delay, period)) {
Tick when = curTick() + delay * SimClock::Int::ns;
Tick repeat = period * SimClock::Int::ns;
exitSimLoop("checkpoint", 0, when, repeat);
}
}
uint64_t