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-rw-r--r--src/gpgpu-sim/addrdec.cc29
-rw-r--r--src/gpgpu-sim/addrdec.h5
-rw-r--r--src/gpgpu-sim/gpu-sim.cc2
-rw-r--r--src/gpgpu-sim/gpu-sim.h3
-rw-r--r--src/gpgpu-sim/local_interconnect.cc65
-rw-r--r--src/gpgpu-sim/local_interconnect.h17
6 files changed, 95 insertions, 26 deletions
diff --git a/src/gpgpu-sim/addrdec.cc b/src/gpgpu-sim/addrdec.cc
index 8651869..c4c0f53 100644
--- a/src/gpgpu-sim/addrdec.cc
+++ b/src/gpgpu-sim/addrdec.cc
@@ -165,6 +165,27 @@ void linear_to_raw_address_translation::addrdec_tlx(new_addr_type addr, addrdec_
assert(tlx->chip < m_n_channel);
break;
}
+ case RANDOM:
+ {
+ new_addr_type chip_address = (addr>>ADDR_CHIP_S);
+ tr1_hash_map<new_addr_type,unsigned>::const_iterator got = address_random_interleaving.find (chip_address);
+ if ( got == address_random_interleaving.end() ) {
+ unsigned new_chip_id = rand() % (m_n_channel*m_n_sub_partition_in_channel);
+ address_random_interleaving[chip_address] = new_chip_id;
+ tlx->chip = new_chip_id/m_n_sub_partition_in_channel;
+ tlx->sub_partition = new_chip_id;
+ }
+ else {
+ unsigned new_chip_id = got->second;
+ tlx->chip = new_chip_id/m_n_sub_partition_in_channel;
+ tlx->sub_partition = new_chip_id;
+ }
+
+ assert(tlx->chip < m_n_channel);
+ assert(tlx->sub_partition < m_n_channel*m_n_sub_partition_in_channel);
+ return;
+ break;
+ }
case CUSTOM:
/* No custom set function implemented */
//Do you custom index here
@@ -175,9 +196,9 @@ void linear_to_raw_address_translation::addrdec_tlx(new_addr_type addr, addrdec_
}
// combine the chip address and the lower bits of DRAM bank address to form the subpartition ID
- unsigned sub_partition_addr_mask = m_n_sub_partition_in_channel - 1;
+ unsigned sub_partition_addr_mask = m_n_sub_partition_in_channel - 1;
tlx->sub_partition = tlx->chip * m_n_sub_partition_in_channel
- + (tlx->bk & sub_partition_addr_mask);
+ + (tlx->bk & sub_partition_addr_mask);
}
void linear_to_raw_address_translation::addrdec_parseoption(const char *option)
@@ -396,6 +417,10 @@ void linear_to_raw_address_translation::init(unsigned int n_channel, unsigned in
if (run_test) {
sweep_test();
}
+
+ if(memory_partition_indexing == RANDOM)
+ srand (time(NULL));
+
}
#include "../tr1_hash_map.h"
diff --git a/src/gpgpu-sim/addrdec.h b/src/gpgpu-sim/addrdec.h
index bdc5fec..a5333fb 100644
--- a/src/gpgpu-sim/addrdec.h
+++ b/src/gpgpu-sim/addrdec.h
@@ -40,6 +40,7 @@ enum partition_index_function{
BITWISE_PERMUTATION,
IPOLY,
PAE,
+ RANDOM,
CUSTOM
};
@@ -55,6 +56,7 @@ struct addrdec_t {
unsigned sub_partition;
};
+
class linear_to_raw_address_translation {
public:
linear_to_raw_address_translation();
@@ -62,7 +64,7 @@ public:
void init(unsigned int n_channel, unsigned int n_sub_partition_in_channel);
// accessors
- void addrdec_tlx(new_addr_type addr, addrdec_t *tlx) const;
+ void addrdec_tlx(new_addr_type addr, addrdec_t *tlx) const;
new_addr_type partition_address( new_addr_type addr ) const;
private:
@@ -92,6 +94,7 @@ private:
unsigned int gap;
int m_n_channel;
int m_n_sub_partition_in_channel;
+
};
#endif
diff --git a/src/gpgpu-sim/gpu-sim.cc b/src/gpgpu-sim/gpu-sim.cc
index 81d9b69..8837aef 100644
--- a/src/gpgpu-sim/gpu-sim.cc
+++ b/src/gpgpu-sim/gpu-sim.cc
@@ -99,6 +99,8 @@ unsigned long long gpu_tot_sim_cycle_parition_util = 0;
unsigned long long partiton_replys_in_parallel = 0;
unsigned long long partiton_replys_in_parallel_total = 0;
+tr1_hash_map<new_addr_type,unsigned> address_random_interleaving;
+
/* Clock Domains */
#define CORE 0x01
diff --git a/src/gpgpu-sim/gpu-sim.h b/src/gpgpu-sim/gpu-sim.h
index 6ce5524..efda65a 100644
--- a/src/gpgpu-sim/gpu-sim.h
+++ b/src/gpgpu-sim/gpu-sim.h
@@ -62,8 +62,7 @@
#define SAMPLELOG 222
#define DUMPLOG 333
-
-
+extern tr1_hash_map<new_addr_type,unsigned> address_random_interleaving;
enum dram_ctrl_t {
diff --git a/src/gpgpu-sim/local_interconnect.cc b/src/gpgpu-sim/local_interconnect.cc
index 1d93fe6..21b44ed 100644
--- a/src/gpgpu-sim/local_interconnect.cc
+++ b/src/gpgpu-sim/local_interconnect.cc
@@ -36,9 +36,10 @@
#include "local_interconnect.h"
#include "mem_fetch.h"
-xbar_router::xbar_router(unsigned router_id, unsigned n_shader, unsigned n_mem, unsigned m_in_buffer_limit, unsigned m_out_buffer_limit)
+xbar_router::xbar_router(unsigned router_id, enum Interconnect_type m_type, unsigned n_shader, unsigned n_mem, unsigned m_in_buffer_limit, unsigned m_out_buffer_limit)
{
m_id=router_id;
+ router_type=m_type;
_n_mem = n_mem;
_n_shader = n_shader;
total_nodes = n_shader+n_mem;
@@ -47,10 +48,21 @@ xbar_router::xbar_router(unsigned router_id, unsigned n_shader, unsigned n_mem,
next_node=0;
in_buffer_limit = m_in_buffer_limit;
out_buffer_limit = m_out_buffer_limit;
+ if(m_type == REQ_NET) {
+ active_in_buffers=n_shader;
+ active_out_buffers=n_mem;
+ }
+ else if(m_type == REPLY_NET) {
+ active_in_buffers=n_mem;
+ active_out_buffers=n_shader;
+ }
cycles = 0;
conflicts= 0;
out_buffer_full=0;
+ in_buffer_full=0;
+ out_buffer_util=0;
+ in_buffer_util=0;
packets_num=0;
}
@@ -81,14 +93,19 @@ void* xbar_router::Pop(unsigned ouput_deviceID)
}
-bool xbar_router::Has_Buffer_In(unsigned input_deviceID, unsigned size) const{
+bool xbar_router::Has_Buffer_In(unsigned input_deviceID, unsigned size, bool update_counter){
assert(input_deviceID < total_nodes);
- return (in_buffers[input_deviceID].size() + size <= in_buffer_limit);
+
+ bool has_buffer = (in_buffers[input_deviceID].size() + size <= in_buffer_limit);
+ if(update_counter && !has_buffer)
+ in_buffer_full++;
+
+ return has_buffer;
}
-bool xbar_router::Has_Buffer_Out(unsigned output_deviceID, unsigned size) const{
+bool xbar_router::Has_Buffer_Out(unsigned output_deviceID, unsigned size){
return (out_buffers[output_deviceID].size() + size <= out_buffer_limit);
}
@@ -118,6 +135,12 @@ void xbar_router::Advance() {
}
next_node = (++next_node % total_nodes);
+
+ //collect some stats about buffer util
+ for(unsigned i=0; i<total_nodes; ++i){
+ in_buffer_util+=in_buffers[i].size();
+ out_buffer_util+=out_buffers[i].size();
+ }
}
bool xbar_router::Busy() const {
@@ -169,7 +192,7 @@ void LocalInterconnect::CreateInterconnect(unsigned m_n_shader, unsigned m_n_mem
net.resize(n_subnets);
for (unsigned i = 0; i < n_subnets; ++i) {
- net[i] = new xbar_router( i, m_n_shader, m_n_mem, m_inct_config.in_buffer_limit, m_inct_config.out_buffer_limit );
+ net[i] = new xbar_router( i, static_cast<Interconnect_type>(i), m_n_shader, m_n_mem, m_inct_config.in_buffer_limit, m_inct_config.out_buffer_limit );
}
}
@@ -236,10 +259,10 @@ bool LocalInterconnect::HasBuffer(unsigned deviceID, unsigned int size) const{
bool has_buffer = false;
- has_buffer = net[0]->Has_Buffer_In(deviceID, size);
-
if ((n_subnets>1) && deviceID >= n_shader) // deviceID is memory node
- has_buffer = net[1]->Has_Buffer_In(deviceID, size);
+ has_buffer = net[REPLY_NET]->Has_Buffer_In(deviceID, 1, true);
+ else
+ has_buffer = net[REQ_NET]->Has_Buffer_In(deviceID, 1, true);
return has_buffer;
@@ -247,18 +270,24 @@ bool LocalInterconnect::HasBuffer(unsigned deviceID, unsigned int size) const{
void LocalInterconnect::DisplayStats() const{
- cout<<"Req_Network_injected_packets_num = "<<net[0]->packets_num<<endl;
- cout<<"Req_Network_cycles = "<<net[0]->cycles<<endl;
- cout<<"Req_Network_injected_packets_per_cycle = "<<(float)(net[0]->packets_num) / (net[0]->cycles)<<endl;
- cout<<"Req_Network_conflicts_per_cycle = "<<(float)(net[0]->conflicts) / (net[0]->cycles)<<endl;
- cout<<"Req_Network_out_buffer_full_per_cycle = "<<(float)(net[0]->out_buffer_full) / (net[0]->cycles)<<endl;
+ cout<<"Req_Network_injected_packets_num = "<<net[REQ_NET]->packets_num<<endl;
+ cout<<"Req_Network_cycles = "<<net[REQ_NET]->cycles<<endl;
+ cout<<"Req_Network_injected_packets_per_cycle = "<<(float)(net[REQ_NET]->packets_num) / (net[REQ_NET]->cycles)<<endl;
+ cout<<"Req_Network_conflicts_per_cycle = "<<(float)(net[REQ_NET]->conflicts) / (net[REQ_NET]->cycles)<<endl;
+ cout<<"Req_Network_in_buffer_full_per_cycle = "<<(float)(net[REQ_NET]->in_buffer_full) / (net[REQ_NET]->cycles)<<endl;
+ cout<<"Req_Network_in_buffer_avg_util = "<<((float)(net[REQ_NET]->in_buffer_util) / (net[REQ_NET]->cycles) / net[REQ_NET]->active_in_buffers)<<endl;
+ cout<<"Req_Network_out_buffer_full_per_cycle = "<<(float)(net[REQ_NET]->out_buffer_full) / (net[REQ_NET]->cycles)<<endl;
+ cout<<"Req_Network_out_buffer_avg_util = "<<((float)(net[REQ_NET]->out_buffer_util) / (net[REQ_NET]->cycles) / net[REQ_NET]->active_out_buffers)<<endl;
cout<<endl;
- cout<<"Reply_Network_injected_packets_num = "<<net[1]->packets_num<<endl;
- cout<<"ReplyNetwork_cycles = "<<net[1]->cycles<<endl;
- cout<<"ReplyNetwork_injected_packets_per_cycle = "<<(float)(net[1]->packets_num) / (net[1]->cycles)<<endl;
- cout<<"ReplyNetwork_conflicts_per_cycle = "<<(float)(net[1]->conflicts) / (net[1]->cycles)<<endl;
- cout<<"ReplyNetwork_out_buffer_full_per_cycle = "<<(float)(net[1]->out_buffer_full) / (net[1]->cycles)<<endl;
+ cout<<"Reply_Network_injected_packets_num = "<<net[REPLY_NET]->packets_num<<endl;
+ cout<<"Reply_Network_cycles = "<<net[REPLY_NET]->cycles<<endl;
+ cout<<"Reply_Network_injected_packets_per_cycle = "<<(float)(net[REPLY_NET]->packets_num) / (net[REPLY_NET]->cycles)<<endl;
+ cout<<"Reply_Network_conflicts_per_cycle = "<<(float)(net[REPLY_NET]->conflicts) / (net[REPLY_NET]->cycles)<<endl;
+ cout<<"Reply_Network_in_buffer_full_per_cycle = "<<(float)(net[REPLY_NET]->in_buffer_full) / (net[REPLY_NET]->cycles)<<endl;
+ cout<<"Reply_Network_in_buffer_avg_util = "<<((float)(net[REPLY_NET]->in_buffer_util) / (net[REPLY_NET]->cycles) / net[REPLY_NET]->active_in_buffers)<<endl;
+ cout<<"Reply_Network_out_buffer_full_per_cycle = "<<(float)(net[REPLY_NET]->out_buffer_full) / (net[REPLY_NET]->cycles)<<endl;
+ cout<<"Reply_Network_out_buffer_avg_util= "<<((float)(net[REPLY_NET]->out_buffer_util) / (net[REPLY_NET]->cycles) / net[REPLY_NET]->active_out_buffers)<<endl;
}
diff --git a/src/gpgpu-sim/local_interconnect.h b/src/gpgpu-sim/local_interconnect.h
index 727a782..0f83d05 100644
--- a/src/gpgpu-sim/local_interconnect.h
+++ b/src/gpgpu-sim/local_interconnect.h
@@ -44,22 +44,29 @@ struct inct_config
unsigned subnets;
};
+enum Interconnect_type {
+ REQ_NET=0,
+ REPLY_NET=1
+};
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(unsigned router_id, enum Interconnect_type m_type, 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;
+ bool Has_Buffer_In(unsigned input_deviceID, unsigned size, bool update_counter=false);
+ bool Has_Buffer_Out(unsigned output_deviceID, unsigned size);
//some stats
unsigned long long cycles;
unsigned long long conflicts;
unsigned long long out_buffer_full;
+ unsigned long long out_buffer_util;
+ unsigned long long in_buffer_full;
+ unsigned long long in_buffer_util;
unsigned long long packets_num;
private:
@@ -77,6 +84,10 @@ private:
unsigned in_buffer_limit, out_buffer_limit;
unsigned next_node;
unsigned m_id;
+ enum Interconnect_type router_type;
+ unsigned active_in_buffers,active_out_buffers;
+
+ friend class LocalInterconnect;
};
generated by cgit v1.3 (git 2.53.0) at 2026-07-11 01:23:17 +0000