From af6b97e3ee2d73fcb2d4bcdbdffc9a6534dfdac8 Mon Sep 17 00:00:00 2001 From: Brad Beckmann Date: Fri, 20 Aug 2010 11:46:14 -0700 Subject: 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. --- src/mem/protocol/MOESI_hammer-dir.sm | 40 ++++++++++++++++++------------- src/mem/ruby/buffers/MessageBuffer.hh | 2 +- src/mem/ruby/buffers/MessageBufferNode.hh | 2 +- src/mem/slicc/symbols/StateMachine.py | 12 ++++++---- 4 files changed, 33 insertions(+), 23 deletions(-) (limited to 'src/mem') diff --git a/src/mem/protocol/MOESI_hammer-dir.sm b/src/mem/protocol/MOESI_hammer-dir.sm index d4b36cded..df3062c93 100644 --- a/src/mem/protocol/MOESI_hammer-dir.sm +++ b/src/mem/protocol/MOESI_hammer-dir.sm @@ -52,7 +52,7 @@ machine(Directory, "AMD Hammer-like protocol") MessageBuffer unblockToDir, network="From", virtual_network="5", ordered="false"; MessageBuffer responseToDir, network="From", virtual_network="4", ordered="false"; - MessageBuffer requestToDir, network="From", virtual_network="2", ordered="false"; + MessageBuffer requestToDir, network="From", virtual_network="2", ordered="false", recycle_latency="1"; MessageBuffer dmaRequestToDir, network="From", virtual_network="0", ordered="true"; // STATES @@ -309,6 +309,22 @@ machine(Directory, "AMD Hammer-like protocol") } } + // off-chip memory request/response is done + in_port(memQueue_in, MemoryMsg, memBuffer) { + if (memQueue_in.isReady()) { + peek(memQueue_in, MemoryMsg) { + if (in_msg.Type == MemoryRequestType:MEMORY_READ) { + trigger(Event:Memory_Data, in_msg.Address); + } else if (in_msg.Type == MemoryRequestType:MEMORY_WB) { + trigger(Event:Memory_Ack, in_msg.Address); + } else { + DEBUG_EXPR(in_msg.Type); + error("Invalid message"); + } + } + } + } + in_port(requestQueue_in, RequestMsg, requestToDir) { if (requestQueue_in.isReady()) { peek(requestQueue_in, RequestMsg) { @@ -333,22 +349,6 @@ machine(Directory, "AMD Hammer-like protocol") } } - // off-chip memory request/response is done - in_port(memQueue_in, MemoryMsg, memBuffer) { - if (memQueue_in.isReady()) { - peek(memQueue_in, MemoryMsg) { - if (in_msg.Type == MemoryRequestType:MEMORY_READ) { - trigger(Event:Memory_Data, in_msg.Address); - } else if (in_msg.Type == MemoryRequestType:MEMORY_WB) { - trigger(Event:Memory_Ack, in_msg.Address); - } else { - DEBUG_EXPR(in_msg.Type); - error("Invalid message"); - } - } - } - } - // Actions action(r_setMRU, "\rr", desc="manually set the MRU bit for pf entry" ) { @@ -766,6 +766,9 @@ machine(Directory, "AMD Hammer-like protocol") } action(j_popIncomingUnblockQueue, "j", desc="Pop incoming unblock queue") { + peek(unblockNetwork_in, ResponseMsg) { + APPEND_TRANSITION_COMMENT(in_msg.Sender); + } unblockNetwork_in.dequeue(); } @@ -880,6 +883,9 @@ machine(Directory, "AMD Hammer-like protocol") } action(zz_recycleRequest, "\z", desc="Recycle the request queue") { + peek(requestQueue_in, RequestMsg) { + APPEND_TRANSITION_COMMENT(in_msg.Requestor); + } requestQueue_in.recycle(); } diff --git a/src/mem/ruby/buffers/MessageBuffer.hh b/src/mem/ruby/buffers/MessageBuffer.hh index 9315eaec0..e4bee5cf6 100644 --- a/src/mem/ruby/buffers/MessageBuffer.hh +++ b/src/mem/ruby/buffers/MessageBuffer.hh @@ -167,7 +167,7 @@ class MessageBuffer int m_not_avail_count; // count the # of times I didn't have N // slots available - int m_msg_counter; + uint64 m_msg_counter; int m_priority_rank; bool m_strict_fifo; bool m_ordering_set; diff --git a/src/mem/ruby/buffers/MessageBufferNode.hh b/src/mem/ruby/buffers/MessageBufferNode.hh index 078da47c4..70afa9831 100644 --- a/src/mem/ruby/buffers/MessageBufferNode.hh +++ b/src/mem/ruby/buffers/MessageBufferNode.hh @@ -54,7 +54,7 @@ class MessageBufferNode public: Time m_time; - int m_msg_counter; // FIXME, should this be a 64-bit value? + uint64 m_msg_counter; // FIXME, should this be a 64-bit value? MsgPtr m_msgptr; }; diff --git a/src/mem/slicc/symbols/StateMachine.py b/src/mem/slicc/symbols/StateMachine.py index b6b8bc5bc..d5a824905 100644 --- a/src/mem/slicc/symbols/StateMachine.py +++ b/src/mem/slicc/symbols/StateMachine.py @@ -494,6 +494,7 @@ $c_ident::init() if vtype.isBuffer and \ "rank" in var and "trigger_queue" not in var: code('$vid->setPriority(${{var["rank"]}});') + else: # Network port object network = var["network"] @@ -537,6 +538,13 @@ $vid->setDescription("[Version " + to_string(m_version) + ", ${ident}, name=${{v ''') + if vtype.isBuffer: + if "recycle_latency" in var: + code('$vid->setRecycleLatency(${{var["recycle_latency"]}});') + else: + code('$vid->setRecycleLatency(m_recycle_latency);') + + # Set the queue consumers code.insert_newline() for port in self.in_ports: @@ -562,10 +570,6 @@ $vid->setDescription("[Version " + to_string(m_version) + ", ${ident}, name=${{v event = "%s_Event_%s" % (self.ident, trans.event.ident) code('m_profiler.possibleTransition($state, $event);') - # added by SS to initialize recycle_latency of message buffers - for buf in self.message_buffer_names: - code("$buf->setRecycleLatency(m_recycle_latency);") - code.dedent() code('}') -- cgit v1.2.3