adding local xbar and fast execution mode

1 files changed, 116 insertions, 0 deletions

diff --git a/src/gpgpu-sim/local_interconnect.h b/src/gpgpu-sim/local_interconnect.h
new file mode 100644
index 0000000..727a782
--- /dev/null
+++ b/src/gpgpu-sim/local_interconnect.h
@@ -0,0 +1,116 @@
+// Copyright (c) 2009-2013, Tor M. Aamodt, Dongdong Li, Ali Bakhoda
+// The University of British Columbia
+// All rights reserved.
+//
+// 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 University of British Columbia 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 HOLDER 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.
+
+#ifndef _LOCAL_INTERCONNECT_HPP_
+#define _LOCAL_INTERCONNECT_HPP_
+
+#include <vector>
+#include <queue>
+#include <iostream>
+#include <map>
+using namespace std;
+
+
+struct inct_config
+{
+
+	//config for local interconnect
+	unsigned   in_buffer_limit;
+	unsigned   out_buffer_limit;
+	unsigned   subnets;
+};
+
+class xbar_router {
+
+public:
+  xbar_router(unsigned router_id, unsigned n_shader, unsigned n_mem, unsigned m_in_buffer_limit, unsigned m_out_buffer_limit);
+  ~xbar_router();
+   void Push(unsigned input_deviceID, unsigned output_deviceID, void* data, unsigned int size);
+   void* Pop(unsigned ouput_deviceID);
+   void Advance();
+   bool Busy() const;
+   bool Has_Buffer_In(unsigned input_deviceID, unsigned size) const;
+   bool Has_Buffer_Out(unsigned output_deviceID, unsigned size) const;
+
+   //some stats
+   unsigned long long cycles;
+   unsigned long long conflicts;
+   unsigned long long out_buffer_full;
+   unsigned long long packets_num;
+
+private:
+  struct Packet{
+	  Packet(void* m_data, unsigned m_output_deviceID) {
+		  data = m_data;
+		  output_deviceID = m_output_deviceID;
+	  }
+	  void* data;
+	  unsigned output_deviceID;
+  };
+  vector<queue<Packet> > in_buffers;
+  vector<queue<Packet> > out_buffers;
+  unsigned _n_shader, _n_mem, total_nodes;
+  unsigned in_buffer_limit, out_buffer_limit;
+  unsigned next_node;
+  unsigned m_id;
+
+};
+
+class LocalInterconnect {
+public:
+  LocalInterconnect(const struct inct_config& m_localinct_config);
+  ~LocalInterconnect();
+  static LocalInterconnect* New(const struct inct_config& m_inct_config);
+  void CreateInterconnect(unsigned n_shader, unsigned n_mem);
+  
+  //node side functions
+  void Init();
+  void Push(unsigned input_deviceID, unsigned output_deviceID, void* data, unsigned int size);
+  void* Pop(unsigned ouput_deviceID);
+  void Advance();
+  bool Busy() const;
+  bool HasBuffer(unsigned deviceID, unsigned int size) const;
+  void DisplayStats() const;
+  void DisplayOverallStats() const;
+  unsigned GetFlitSize() const;
+  
+  void DisplayState(FILE* fp) const;
+  
+  
+protected:
+
+  const inct_config& m_inct_config;
+  
+  unsigned n_shader, n_mem;
+  unsigned n_subnets;
+  vector<xbar_router *> net;
+
+};
+
+#endif
+
+