Commit graph

217 commits

Author SHA1 Message Date
Brad Beckmann
86d6b788f6 ruby: banked cache array resource model
This patch models a cache as separate tag and data arrays.  The patch exposes
the banked array as another resource that is checked by SLICC before a
transition is allowed to execute.  This is similar to how TBE entries and slots
in output ports are modeled.
2012-07-10 22:51:54 -07:00
Joel Hestness
467093ebf2 ruby: tag and data cache access support
Updates to Ruby to support statistics counting of cache accesses.  This feature
serves multiple purposes beyond simple stats collection.  It provides the
foundation for ruby to model the cache tag and data arrays as physical
resources, as well as provide the necessary input data for McPAT power
modeling.
2012-07-10 22:51:54 -07:00
Brad Beckmann
5838ed7290 MOESI_hammer: tbe allocation and dependent wakeup fixes 2012-04-06 13:47:07 -07:00
Brad Beckmann
f050ebe3a8 MOESI_hammer: fixed bug with single cpu + flushes, then modified the regression tester to check this functionality 2012-04-06 13:47:06 -07:00
Marc Orr
eb43883bef build scripts: Made minor modifications to reduce build overhead time.
1. --implicit-cache behavior is default.
2. makeEnv in src/SConscript is conditionally called.
3. decider set to MD5-timestamp
4. NO_HTML build option changed to SLICC_HTML (defaults to False)
2012-03-06 19:07:41 -08:00
Nilay Vaish
69d8600bf8 MESI: Add queues for stalled requests
This patch adds support for stalling the requests queued up at different
controllers for the MESI CMP directory protocol. Earlier the controllers
would recycle the requests using some fixed latency. This results in
younger requests getting serviced first at times, and can result in
starvation. Instead all the requests that need a particular block to be
in a stable state are moved to a separate queue, where they wait till
that block returns to a stable state and then they are processed.
2012-02-10 11:05:24 -06:00
Nilay Vaish
63563c9df2 O3, Ruby: Forward invalidations from Ruby to O3 CPU
This patch implements the functionality for forwarding invalidations and
replacements from the L1 cache of the Ruby memory system to the O3 CPU. The
implementation adds a list of ports to RubyPort. Whenever a replacement or an
invalidation is performed, the L1 cache forwards this to all the ports, which
is the LSQ in case of the O3 CPU.
2012-01-23 11:07:14 -06:00
Andreas Hansson
43a45edcf0 Ruby: Change the access permissions for MOESI hammer
This patch changes the access permission for the WB_E_W state from
Busy to Read_Write to avoid having issues in follow-on patches with
functional accesses going through Ruby. This change was made after
consultation with all involved parties and is more of a work-around
than a fix.
2012-01-17 12:55:07 -06:00
Nilay Vaish
70cb16ba14 MOESI Hammer: Remove a couple of bugs
A couple of bugs were observed while building checkpointing support in Ruby.
This patch changes transitions to remove those errors.
2012-01-10 17:28:44 -06:00
Nilay Vaish
d3aa01eed9 MESI Coherence Protocol: Fix L2 miss statistics
This patch removes calls to uu_ProfileMiss from transitions where the request
is satisfied by the L2 cache controller.

--HG--
extra : rebase_source : e59fe7c6cd5795c0019cf178dd3b062d73cc2ff5
2012-01-05 11:00:45 -06:00
Nilay Vaish
734ef9a209 SLICC: Use pointers for directory entries
SLICC uses pointers for cache and TBE entries but not for directory entries.
This patch changes the protocols, SLICC and Ruby memory system so that even
directory entries are referenced using pointers.

--HG--
extra : rebase_source : abeb4ac78033d003153751f216fd1948251fcfad
2011-12-31 16:38:30 -06:00
Brad Beckmann
8daad28a90 MOESI_hammer: fixed L2 to L1 infinite stalls and deadlock
--HG--
extra : rebase_source : 90f217f28e195a8cee5d64b25c913b452d818676
2011-12-01 10:08:52 -08:00
Tushar Krishna
eff430a972 Remove standard_1level_CMP-protocol.sm include statement from Network
--HG--
extra : rebase_source : 51a2dd4bb643e3dc5b0218a6190cf5c1989f9691
2011-11-22 20:11:18 -05:00
Nilay Vaish
5ff6e05ffd MESI Protocol: Add functions for profiling misses 2011-11-04 11:26:12 -05:00
Nilay Vaish
fb5c095cd5 Protocol: Remove standard one and two level files 2011-11-03 22:52:02 -05:00
Nilay Vaish
a547cf34b9 Ruby: Remove some unused typedefs
This patch removes some of the unused typedefs. It also moves
some of the typedefs from Global.hh to TypeDefines.hh. The patch
also eliminates the file NodeID.hh.
2011-11-03 22:46:45 -05:00
Nilay Vaish
cbaebb3b5e Ruby: Reorganize mapping of components
In RubySlicc_ComponentMapping.hh, certain '#define's have been used for
mapping MachineType to GenericMachineType. These '#define's are being
eliminated and the code will now be generated by SLICC instead. Also
are being eliminated some of the unused functions from
RubySlicc_ComponentMapping.sm.
2011-10-28 13:00:35 -05:00
Lisa Hsu
ae12ae3023 Functional Accesses: Update states to support Broadcast/Snooping protocols.
In the current implementation of Functional Accesses, it's very hard to
implement broadcast or snooping protocols where the memory has no idea if it
has exclusive access to a cache block or not. Without this knowledge, making
sure the RW vs. RO permissions are right are next to impossible. So we add a
new state called Backing_Store to enable the conveyance that this is the backup
storage for a block, so that it can be written if it is the only possibly RW
block in the system, or written even if there is another RW block in the
system, without causing problems.

Also, a small change to actually set the m_name field for each Controller so
that debugging can be easier. Now you can access a controller's name just by
controller->getName().
2011-09-01 11:41:44 -07:00
Nilay Vaish
821dfc1289 BuildEnv: Eliminate RUBY as build environment variable
This patch replaces RUBY with PROTOCOL in all the SConscript files as
the environment variable that decides whether or not certain components
of the simulator are compiled.
2011-08-08 10:50:13 -05:00
Nilay Vaish
720c0be620 Ruby: Remove files and includes not in use 2011-08-03 18:25:30 -05:00
Nilay Vaish
1b49c56679 Scons: Drop RUBY as compile time option.
This patch drops RUBY as a compile time option. Instead the PROTOCOL option
is used to figure out whether or not to build Ruby. If the specified protocol
is 'None', then Ruby is not compiled.
2011-08-02 00:10:08 -05:00
Brad Beckmann
255f82a783 ruby: added generic dma machine 2011-07-06 18:45:15 -07:00
Brad Beckmann
4f83390781 MOESI_hammer: Fixed uniprocessor DMA bug 2011-07-06 18:44:42 -07:00
Nathan Binkert
da1eaaca0e slicc: add a protocol statement and an include statement
All protocols must specify their name
The include statement allows any file to include another file.
2011-07-05 18:30:05 -07:00
Nathan Binkert
831e9b3b7a slicc: cleanup slicc code and make it less verbose 2011-07-05 18:30:05 -07:00
Nilay Vaish
5e0851d554 Network_test: Conform it with functional access changes in Ruby
Addition of functional access support to Ruby necessitated some changes to
the way coherence protocols are written. I had forgotten to update the
Network_test protocol. This patch makes those updates.
2011-07-03 11:33:46 -05:00
Brad Beckmann ext:(%2C%20Nilay%20Vaish%20%3Cnilay%40cs.wisc.edu%3E)
c86f849d5a Ruby: Add support for functional accesses
This patch rpovides functional access support in Ruby. Currently only
the M5Port of RubyPort supports functional accesses. The support for
functional through the PioPort will be added as a separate patch.
2011-06-30 19:49:26 -05:00
Nilay Vaish
67bb307003 Ruby: Correctly set access permissions for directory entries
The access permissions for the directory entries are not being set correctly.
This is because pointers are not used for handling directory entries.
function. get and set functions for access permissions have been added to the
Controller state machine. The changePermission() function provided by the
AbstractEntry and AbstractCacheEntry classes has been exposed to SLICC
code once again. The set_permission() functionality has been removed.

NOTE: Each protocol will have to define these get and set functions in order
to compile successfully.
2011-06-08 11:58:09 -05:00
Tushar Krishna
3d06ffa7d5 slicc: added vnet_type to MI_example
Forgot to add this to MI_example in my previous patch.
2011-05-20 05:06:43 -04:00
Tushar Krishna
3ed048e4f5 slicc: added vnet_type field to identify response vnets from others
Identifying response vnets versus other vnets will allow garnet to
determine which vnets will carry data packets, and which will carry
ctrl packets, and use appropriate buffer sizes (since data packets are larger
than ctrl packets). This in turn allows the orion power model to accurately
estimate buffer power.
2011-05-18 03:06:07 -04:00
Brad Beckmann
40bcbf4253 network: convert links & switches to first class C++ SimObjects
This patch converts links and switches from second class simobjects that were
virtually ignored by the networks (both simple and Garnet) to first class
simobjects that directly correspond to c++ ojbects manipulated by the
topology and network classes.  This is especially true for Garnet, where the
links and switches directly correspond to specific C++ objects.

By making this change, many aspects of the Topology class were simplified.

--HG--
rename : src/mem/ruby/network/Network.cc => src/mem/ruby/network/BasicLink.cc
rename : src/mem/ruby/network/Network.hh => src/mem/ruby/network/BasicLink.hh
rename : src/mem/ruby/network/Network.cc => src/mem/ruby/network/garnet/fixed-pipeline/GarnetLink_d.cc
rename : src/mem/ruby/network/Network.hh => src/mem/ruby/network/garnet/fixed-pipeline/GarnetLink_d.hh
rename : src/mem/ruby/network/garnet/fixed-pipeline/GarnetNetwork_d.py => src/mem/ruby/network/garnet/fixed-pipeline/GarnetLink_d.py
rename : src/mem/ruby/network/garnet/fixed-pipeline/GarnetNetwork_d.py => src/mem/ruby/network/garnet/fixed-pipeline/GarnetRouter_d.py
rename : src/mem/ruby/network/Network.cc => src/mem/ruby/network/garnet/flexible-pipeline/GarnetLink.cc
rename : src/mem/ruby/network/Network.hh => src/mem/ruby/network/garnet/flexible-pipeline/GarnetLink.hh
rename : src/mem/ruby/network/garnet/fixed-pipeline/GarnetNetwork_d.py => src/mem/ruby/network/garnet/flexible-pipeline/GarnetLink.py
rename : src/mem/ruby/network/garnet/fixed-pipeline/GarnetNetwork_d.py => src/mem/ruby/network/garnet/flexible-pipeline/GarnetRouter.py
2011-04-28 17:18:14 -07:00
Brad Beckmann
0788ea7b3b hammer: fixed dma uniproc error
Fixed an error reguarding DMA for uninprocessor systems.  Basically removed an
overly agressive optimization that lead to inconsistent state between the
cache and the directory.
2011-04-01 15:50:23 -07:00
Lisa Hsu
01fc529bb2 CacheMemory: add allocateVoid() that is == allocate() but no return value.
This function duplicates the functionality of allocate() exactly, except that it does not return
a return value.  In protocols where you just want to allocate a block
but do not want that block to be your implicitly passed cache_entry, use this function.
Otherwise, SLICC will complain if you do not consume the pointer returned by allocate(),
and if you do a dummy assignment Entry foo := cache.allocate(address), the C++
compiler will complain of an unused variable.  This is kind of a hack to get around
those issues, but suggestions welcome.
2011-03-31 18:20:12 -07:00
Lisa Hsu
322b9ca2c5 Ruby: Add new object called WireBuffer to mimic a Wire.
This is a substitute for MessageBuffers between controllers where you don't
want messages to actually go through the Network, because requests/responses can
always get reordered wrt to one another (even if you turn off Randomization and turn on Ordered)
because you are, after all, going through a network with contention. For systems where you model
multiple controllers that are very tightly coupled and do not actually go through a network,
it is a pain to have to write a coherence protocol to account for mixed up request/response orderings
despite the fact that it's completely unrealistic.  This is *not* meant as a substitute for real
MessageBuffers when messages do in fact go over a network.
2011-03-31 17:17:57 -07:00
Lisa Hsu
225e67f531 Ruby: pass Packet->Req->contextId() to Ruby.
It is useful for Ruby to understand from whence request packets came.
This has all request packets going into Ruby pass the contextId value, if
it exists.  This supplants the old libruby proc_id value passed around in
all the Messages, so I've also removed the unused unsigned proc_id; member
generated by SLICC for all Message types.
2011-03-31 17:17:47 -07:00
Somayeh Sardashti
c8bbfed937 This patch supports cache flushing in MOESI_hammer 2011-03-28 10:49:45 -05:00
Nilay Vaish
1764ebbf30 Ruby: Remove CacheMsg class from SLICC
The goal of the patch is to do away with the CacheMsg class currently in use
in coherence protocols. In place of CacheMsg, the RubyRequest class will used.
This class is already present in slicc_interface/RubyRequest.hh. In fact,
objects of class CacheMsg are generated by copying values from a RubyRequest
object.
2011-03-22 06:41:54 -05:00
Tushar Krishna
09c3a97a4c This patch adds the network tester for simple and garnet networks.
The tester code is in testers/networktest.
The tester can be invoked by configs/example/ruby_network_test.py.
A dummy coherence protocol called Network_test is also addded for network-only simulations and testing. The protocol takes in messages from the tester and just pushes them into the network in the appropriate vnet, without storing any state.
2011-03-21 22:51:58 -04:00
Nilay Vaish
611f052e96 Ruby: Convert CacheRequestType to RubyRequestType
This patch converts CacheRequestType to RubyRequestType so that both the
protocol dependent and independent code makes use of the same request type.
2011-03-19 18:34:59 -05:00
Nilay Vaish
2f4276448b Ruby: Convert AccessModeType to RubyAccessMode
This patch converts AccessModeType to RubyAccessMode so that both the
protocol dependent and independent code uses the same access mode.
2011-03-19 18:34:37 -05:00
Brad Beckmann
dd9083115e MOESI_hammer: minor fixes to full-bit dir 2011-03-19 14:17:48 -07:00
Brad Beckmann
31d0a421a9 MOESI_hammer: fixed dma bug with shared data 2011-03-19 14:17:48 -07:00
Brad Beckmann
a2e98f191f MOESI_CMP_directory: significant dma bug fixes 2011-03-19 14:17:48 -07:00
Nilay Vaish
18142df5b9 SLICC: Remove external_type for structures
In SLICC, in order to define a type a data type for which it should not
generate any code, the keyword external_type is used. For those data types for
which code should be generated, the keyword structure is used. This patch
eliminates the use of keyword external_type for defining structures. structure
key word can now have an optional attribute external, which would be used for
figuring out whether or not to generate the code for this structure. Also, now
structures can have functions as well data members in them.
2011-03-18 14:12:04 -05:00
Nilay Vaish
3f27ccbb54 SLICC: Remove the keyword wake_up_dependents
In order to add stall and wait facility for protocols, a keyword
wake_up_dependents was introduced. This patch removes the keyword,
instead this functionality is now implemented as function call.
2011-03-18 14:12:03 -05:00
Nilay Vaish
847ba941ea SLICC: Remove the keyword wake_up_all_dependents
In order to add stall and wait facility for protocols, a keyword
wake_up_all_dependents was introduced. This patch removes the keyword,
instead this functionality is now implemented as function call.
2011-03-18 14:12:01 -05:00
Lisa Hsu
556b5c5488 Ruby: expose a simple mod function in slicc interface. 2011-03-17 17:01:41 -07:00
Gabe Black
96e0f3bda5 SCons: Clean up some inconsistent capitalization in scons options. 2011-03-03 23:55:21 -08:00
Brad Beckmann
12a05c23b7 ruby: automate permission setting
This patch integrates permissions with cache and memory states, and then
automates the setting of permissions within the generated code.  No longer
does one need to manually set the permissions within the setState funciton.
This patch will faciliate easier functional access support by always correctly
setting permissions for both cache and memory states.

--HG--
rename : src/mem/slicc/ast/EnumDeclAST.py => src/mem/slicc/ast/StateDeclAST.py
rename : src/mem/slicc/ast/TypeFieldEnumAST.py => src/mem/slicc/ast/TypeFieldStateAST.py
2011-02-23 16:41:59 -08:00
Brad Beckmann
7842e95519 MOESI_hammer: cache probe address clean up 2011-02-23 16:41:58 -08:00
Brad Beckmann
3bc33eeaea ruby: cleaned up access permission enum 2011-02-23 16:41:58 -08:00
Brad Beckmann
c09a33e5d5 ruby: removed unsupported protocol files 2011-02-23 16:41:26 -08:00
Brad Beckmann
63a25a56cc m5: merged in hammer fix 2011-02-22 11:16:40 -08:00
Nilay Vaish
77eed184f5 Ruby: Machine Type missing in MOESI CMP directory protocol
In certain actions of the L1 cache controller, while creating an outgoing
message, the machine type was not being set. This results in a
segmentation fault when trace is collected. Joseph Pusudesris provided
his patch for fixing this issue.
2011-02-19 17:32:43 -06:00
Nilay Vaish
293ccb7037 Ruby: clean MOESI CMP directory protocol
The L1 cache controller file contains references to foo and goo queues, which
are not in use at all. These have been removed.
2011-02-19 17:32:00 -06:00
Nilay Vaish
0cede15d6c Ruby: Reorder Cache Lookup in Protocol Files
The patch changes the order in which L1 dcache and icache are looked up when
a request comes in. Earlier, if a request came in for instruction fetch, the
dcache was looked up before the icache, to correctly handle self-modifying
code. But, in the common case, dcache is going to report a miss and the
subsequent icache lookup is going to report a hit. Given the invariant -
caches under the same controller keep track of disjoint sets of cache blocks,
we can move the icache lookup before the dcache lookup. In case of a hit in
the icache, using our invariant, we know that the dcache would have reported
a miss. In  case of a miss in the icache, we know that icache would have
missed even if the dcache was looked up before looking up the icache.
Effectively, we are doing the same thing as before, though in the common case,
we expect reduction in the number of lookups. This was empirically confirmed
for MOESI hammer. The ratio lookups to access requests is now about 1.1 to 1.
2011-02-12 11:41:20 -06:00
Brad Beckmann
fbebe9a642 MOESI_hammer: fixed wakeup for SS->S transistion 2011-02-10 13:28:23 -08:00
Nilay Vaish
488280e48b MESI CMP: Unset TBE pointer in L2 cache controller
The TBE pointer in the MESI CMP implementation was not being set to NULL
when the TBE is deallocated. This resulted in segmentation fault on testing
the protocol when the ProtocolTrace was switched on.
2011-02-08 07:47:02 -06:00
Brad Beckmann
f5aa75fdc5 ruby: support to stallAndWait the mandatory queue
By stalling and waiting the mandatory queue instead of recycling it, one can
ensure that no incoming messages are starved when the mandatory queue puts
signficant of pressure on the L1 cache controller (i.e. the ruby memtester).

--HG--
rename : src/mem/slicc/ast/WakeUpDependentsStatementAST.py => src/mem/slicc/ast/WakeUpAllDependentsStatementAST.py
2011-02-06 22:14:19 -08:00
Brad Beckmann
5c2f4937b3 MOESI_hammer: fixed dir bug counting received acks 2011-02-06 22:14:19 -08:00
Tushar Krishna
4fa690e8ff MOESI_CMP_token: removed unused message fields 2011-02-06 22:14:19 -08:00
Brad Beckmann
1b54344aeb MOESI_hammer: Added full-bit directory support 2011-02-06 22:14:18 -08:00
Joel Hestness
02b05bf9be MOESI_hammer: trigge queue fix. 2011-02-06 22:14:17 -08:00
Nilay Vaish
c82a8979a3 Change interface between coherence protocols and CacheMemory
The purpose of this patch is to change the way CacheMemory interfaces with
coherence protocols. Currently, whenever a cache controller (defined in the
protocol under consideration) needs to carry out any operation on a cache
block, it looks up the tag hash map and figures out whether or not the block
exists in the cache. In case it does exist, the operation is carried out
(which requires another lookup). As observed through profiling of different
protocols, multiple such lookups take place for a given cache block. It was
noted that the tag lookup takes anything from 10% to 20% of the simulation
time. In order to reduce this time, this patch is being posted.

I have to acknowledge that the many of the thoughts that went in to this
patch belong to Brad.

Changes to CacheMemory, TBETable and AbstractCacheEntry classes:
1. The lookup function belonging to CacheMemory class now returns a pointer
to a cache block entry, instead of a reference. The pointer is NULL in case
the block being looked up is not present in the cache. Similar change has
been carried out in the lookup function of the TBETable class.
2. Function for setting and getting access permission of a cache block have
been moved from CacheMemory class to AbstractCacheEntry class.
3. The allocate function in CacheMemory class now returns pointer to the
allocated cache entry.

Changes to SLICC:
1. Each action now has implicit variables - cache_entry and tbe. cache_entry,
if != NULL, must point to the cache entry for the address on which the action
is being carried out. Similarly, tbe should also point to the transaction
buffer entry of the address on which the action is being carried out.
2. If a cache entry or a transaction buffer entry is passed on as an
argument to a function, it is presumed that a pointer is being passed on.
3. The cache entry and the tbe pointers received __implicitly__ by the
actions, are passed __explicitly__ to the trigger function.
4. While performing an action, set/unset_cache_entry, set/unset_tbe are to
be used for setting / unsetting cache entry and tbe pointers respectively.
5. is_valid() and is_invalid() has been made available for testing whether
a given pointer 'is not NULL' and 'is NULL' respectively.
6. Local variables are now available, but they are assumed to be pointers
always.
7. It is now possible for an object of the derieved class to make calls to
a function defined in the interface.
8. An OOD token has been introduced in SLICC. It is same as the NULL token
used in C/C++. If you are wondering, OOD stands for Out Of Domain.
9. static_cast can now taken an optional parameter that asks for casting the
given variable to a pointer of the given type.
10. Functions can be annotated with 'return_by_pointer=yes' to return a
pointer.
11. StateMachine has two new variables, EntryType and TBEType. EntryType is
set to the type which inherits from 'AbstractCacheEntry'. There can only be
one such type in the machine. TBEType is set to the type for which 'TBE' is
used as the name.

All the protocols have been modified to conform with the new interface.
2011-01-17 18:46:16 -06:00
Nilay Vaish
47ba26f6b3 Ruby: Fixes MESI CMP directory protocol
The current implementation of MESI CMP directory protocol is broken.
This patch, from Arkaprava Basu, fixes the protocol.
2011-01-13 22:17:11 -06:00
Nilay Vaish
d36cc62c11 Ruby: Updates MOESI Hammer protocol
This patch changes the manner in which data is copied from L1 to L2 cache in
the implementation of the Hammer's cache coherence protocol. Earlier, data was
copied directly from one cache entry to another. This has been broken in to
two parts. First, the data is copied from the source cache entry to a
transaction buffer entry. Then, data is copied from the transaction buffer
entry to the destination cache entry.

This has been done to maintain the invariant - at any given instant, multiple
caches under a controller are exclusive with respect to each other.
2011-01-04 21:40:49 -06:00
Nilay Vaish
58fa2857e1 This patch removes the WARN_* and ERROR_* from src/mem/ruby/common/Debug.hh file. These statements have been replaced with warn(), panic() and fatal() defined in src/base/misc.hh 2010-12-22 23:15:24 -06:00
Nilay Vaish
658849d101 ruby: Converted old ruby debug calls to M5 debug calls
This patch developed by Nilay Vaish converts all the old GEMS-style ruby
debug calls to the appropriate M5 debug calls.
2010-12-01 11:30:04 -08:00
Brad Beckmann
20b2f0ce9f MOESI_hammer: fixed bug for dma reads in single cpu systems 2010-08-24 12:06:53 -07:00
Brad Beckmann
8557480300 ruby: Added merge GETS optimization to hammer
Added an optimization that merges multiple pending GETS requests into a
single request to the owner node.
2010-08-20 11:46:14 -07:00
Brad Beckmann
e7f2da517a ruby: Stall and wait input messages instead of recycling
This patch allows messages to be stalled in their input buffers and wait
until a corresponding address changes state.  In order to make this work,
all in_ports must be ranked in order of dependence and those in_ports that
may unblock an address, must wake up the stalled messages.  Alot of this
complexity is handled in slicc and the specification files simply
annotate the in_ports.

--HG--
rename : src/mem/slicc/ast/CheckAllocateStatementAST.py => src/mem/slicc/ast/StallAndWaitStatementAST.py
rename : src/mem/slicc/ast/CheckAllocateStatementAST.py => src/mem/slicc/ast/WakeUpDependentsStatementAST.py
2010-08-20 11:46:14 -07:00
Brad Beckmann
af6b97e3ee ruby: Recycle latency fix for hammer
Patch allows each individual message buffer to have different recycle latencies
and allows the overall recycle latency to be specified at the cmd line. The
patch also adds profiling info to make sure no one processor's requests are
recycled too much.
2010-08-20 11:46:14 -07:00
Brad Beckmann
f57053473a MOESI_hammer: break down miss latency stalled cycles
This patch tracks the number of cycles a transaction is delayed at different
points of the request-forward-response loop.
2010-08-20 11:46:14 -07:00
Brad Beckmann
8b28848321 ruby: added probe filter support to hammer 2010-08-20 11:46:14 -07:00
Brad Beckmann
72044e3f5a ruby: Disable migratory sharing for token and hammer
This patch allows one to disable migratory sharing for those cache blocks that
are accessed by atomic requests.  While the implementations are different
between the token and hammer protocols, the motivation is the same.  For
Alpha, LLSC semantics expect that normal loads do not unlock cache blocks that
have been locked by LL accesses.  Therefore, locked blocks should not transfer
write permissions when responding to these load requests.  Instead, only they
only transfer read permissions so that the subsequent SC access can possibly
succeed.
2010-08-20 11:46:13 -07:00
Brad Beckmann
45f6f31d7a ruby: fixed token bugs associated with owner token counts
This patch fixes several bugs related to previous inconsistent assumptions on
how many tokens the Owner had.  Mike Marty should have fixes these bugs years
ago.  :)
2010-08-20 11:46:13 -07:00
Brad Beckmann
fb2e0f56ef ruby: MOESI_CMP_token dma fixes
This patch fixes various protocol bugs regarding races between dma requests
and persistent requests.
2010-08-20 11:46:13 -07:00
Brad Beckmann
6a4f99899b ruby: Resurrected Ruby's deterministic tests
Added the request series and invalidate deterministic tests as new cpu models
and removed the no longer needed ruby tests

--HG--
rename : configs/example/rubytest.py => configs/example/determ_test.py
rename : src/mem/ruby/tester/DetermGETXGenerator.cc => src/cpu/directedtest/DirectedGenerator.cc
rename : src/mem/ruby/tester/DetermGETXGenerator.hh => src/cpu/directedtest/DirectedGenerator.hh
rename : src/mem/ruby/tester/DetermGETXGenerator.cc => src/cpu/directedtest/InvalidateGenerator.cc
rename : src/mem/ruby/tester/DetermGETXGenerator.hh => src/cpu/directedtest/InvalidateGenerator.hh
rename : src/cpu/rubytest/RubyTester.cc => src/cpu/directedtest/RubyDirectedTester.cc
rename : src/cpu/rubytest/RubyTester.hh => src/cpu/directedtest/RubyDirectedTester.hh
rename : src/mem/ruby/tester/DetermGETXGenerator.cc => src/cpu/directedtest/SeriesRequestGenerator.cc
rename : src/mem/ruby/tester/DetermGETXGenerator.hh => src/cpu/directedtest/SeriesRequestGenerator.hh
2010-08-20 11:46:13 -07:00
Brad Beckmann
984adf198a ruby: Updated MOESI_hammer L2 latency behavior
Previously, the MOESI_hammer protocol calculated the same latency for L1 and
L2 hits.  This was because the protocol was written using the old ruby
assumption that L1 hits used the sequencer fast path.  Since ruby no longer
uses the fast-path, the protocol delays L2 hits by placing them on the
trigger queue.
2010-08-20 11:46:13 -07:00
Brad Beckmann
29c45ccd23 ruby: Reduced ruby latencies
The previous slower ruby latencies created a mismatch between the faster M5
cpu models and the much slower ruby memory system.  Specifically smp
interrupts were much slower and infrequent, as well as cpus moving in and out
of spin locks.  The result was many cpus were idle for large periods of time.

These changes fix the latency mismatch.
2010-08-20 11:46:12 -07:00
Brad Beckmann
8e5c441a54 ruby: fix ruby llsc support to sync sc outcomes
Added support so that ruby can determine the outcome of store conditional
operations and reflect that outcome to M5 physical memory and cpus.
2010-08-20 11:46:12 -07:00
Brad Beckmann
54d76f0ce5 ruby: Fixed L2 cache miss profiling
Fixed L2 cache miss profiling for the MOESI_CMP_token protocol
2010-08-20 11:46:12 -07:00
Brad Beckmann
a3b4b9b3e3 ruby: Added bcast msg profiling to hammer and token 2010-08-20 11:46:12 -07:00
Brad Beckmann
4b4e725921 ruby: Reincarnated the responding machine profiling
This patch adds back to ruby the capability to understand the response time
for messages that hit in different levels of the cache heirarchy.
Specifically add support for the MI_example, MOESI_hammer, and MOESI_CMP_token
protocols.
2010-08-20 11:46:12 -07:00
Brad Beckmann
9fb4381ddc MOESI_CMP_token: Fixed dma persistent lockdown bugs 2010-08-20 11:46:12 -07:00
Brad Beckmann
d7d73680c4 MESI_CMP_directory: bug fix for old PUTX requests 2010-08-20 11:41:35 -07:00
Nathan Binkert
f1c3f3044b ruby: get "using namespace" out of headers
In addition to obvious changes, this required a slight change to the slicc
grammar to allow types with :: in them.  Otherwise slicc barfs on std::string
which we need for the headers that slicc generates.
2010-04-02 11:20:32 -07:00
Brad Beckmann
b55e69ccac ruby: Removed the unnecessary MachineType message fields 2010-03-21 21:22:22 -07:00
Brad Beckmann
61f1d9a3d7 ruby: Reordered protocol buffers
Reordered vnet priorities to agree with PerfectSwitch for protocols MI_example,
MOESI_CMP_token, and MOESI_hammer
2010-03-21 21:22:21 -07:00
Brad Beckmann
92cfd1cac7 ruby: Ruby support for sparse memory
The patch includes direct support for the MI example protocol.
2010-03-21 21:22:21 -07:00
Brad Beckmann
f53287f9ad ruby: Minor dma latency initialization fix 2010-03-21 21:22:21 -07:00
Brad Beckmann
378fbce911 ruby: Fixed small data msg bug in MOESI_hammer-dir 2010-03-21 21:22:20 -07:00
Brad Beckmann
c48a735336 ruby: Fix MOESI_hammer cache profiler calls for L2 misses 2010-03-21 21:22:20 -07:00
Nathan Binkert
cf86532857 slicc: have a central mechanism for creating a code_formatter.
This makes it easier to add global variables like protocol
2010-03-10 16:22:26 -08:00
Brad Beckmann
714865e4a4 ruby: Initialize sender in MI_example-dir 2010-02-10 16:40:54 -08:00
Brad Beckmann
db2ecbb6b6 ruby: Set default protocol back to MI_example 2010-02-01 11:07:38 -08:00
Brad Beckmann
ab2f864af2 m5: Regression Tester Update
This patch includes the necessary regression updates to test the new ruby
configuration system.  The patch includes support for multiple ruby protocols
and adds the ruby random tester.  The patch removes atomic mode test for
ruby since ruby does not support atomic mode acceses.  These tests can be
added back in when ruby supports atomic mode for real.

--HG--
rename : tests/quick/50.memtest/test.py => tests/quick/60.rubytest/test.py
2010-01-29 20:29:40 -08:00
Brad Beckmann
143d8ea698 ruby: removed last level cache support
Removed the last level cache support and MOESI_hammer's dependency on it.
Replaces the LLC support with the more generic MachineType count.
2010-01-29 20:29:34 -08:00
Brad Beckmann
90aab239a1 ruby: Added a Scons option to prevent HTML file creation 2010-01-29 20:29:33 -08:00
Brad Beckmann
1feae85017 ruby: Removed static members in RubyPort including hitcallback
Removed static members in RubyPort and removed the ruby request unique id.
2010-01-29 20:29:33 -08:00