/**
* Progress time and (possibly) service the current request.
* Decrement the time left to fully service the current request.
* If it reaches zero, service it and notify the processor.
*/
public void tick()
{
for (int i = 0; i < Config.N; i++)
{
//Console.WriteLine(bank_id.ToString() + '\t' + i.ToString());
//Simulator.stats.bank_queuedepth_persrc[bank_id, i].Add(outstandingReqs_perapp[i]);
}
Simulator.stats.bank_queuedepth[bank_id].Add(outstandingReqs);
//sanity check
Debug.Assert((wait_left >= 0) && (wait_left <= Config.memory.row_conflict_latency + Config.memory.bus_busy_time));
Debug.Assert(!(cur_req == null && wait_left != 0));
Debug.Assert(!(cur_req != null && wait_left == 0));
//decrement time left to serve current request
if (wait_left > 0)
{
wait_left--;
}
//can't serve current request
if (cur_req == null || wait_left != 0)
{
return;
}
//we can now serve the current request
//Console.WriteLine("Request complete, sending reply");
//serve request by removing current request from scheduler buffer
sched.remove_req(cur_req);
outstandingReqs--;
if (outstandingReqs < 0)
{
throw new Exception("Bank has negative number of requests!");
}
outstandingReqs_perapp[cur_req.request.requesterID]--;
if (outstandingReqs_perapp[cur_req.request.requesterID] < 0)
{
throw new Exception("App has negative number of requests!");
}
cur_req.cb();
//send back the serviced request to cache (which in turn sends it to processor)
Request request = cur_req.request;
if (request == null)
{
throw new Exception("No request! don't know who to send it back to!");
}
//Console.WriteLine("Returning mc_data packet to cache slice at Proc {0}, ({1},{2})", mcaddrpacket.source.ID, mcaddrpacket.source.x, mcaddrpacket.source.y);
CPU cpu = Simulator.network.nodes[request.requesterID].cpu;
cpu.outstandingReqsMemory--;
if (cpu.outstandingReqsMemory == 0)
{
Simulator.stats.memory_episode_persrc[request.requesterID].Add(Simulator.CurrentRound - cpu.outstandingReqsMemoryCycle);
cpu.outstandingReqsMemoryCycle = Simulator.CurrentRound;
}
//----- STATS START -----
stat.dec(ref BankStat.req_cnt[request.requesterID]);
if (cur_req.isMarked)
{
stat.dec(ref BankStat.marked_req_cnt[request.requesterID]);
}
else
{
stat.dec(ref BankStat.unmarked_req_cnt[request.requesterID]);
}
//----- STATS END ------
//reset current req
cur_req = null;
}
// This is needed just because of the wacky binding/scoping rules used by
// delegates; without this, you can't keep recursively wrapping delegates
// within a loop.
protected void WrapDelegates(MemoryRequest m1, MemoryRequest m2)
{
Simulator.Ready prev_cb = m1.cb;
m1.cb = delegate() { prev_cb(); m2.cb(); };
}
public void Tick()
{
//Sample BLP
for (int i = 0; i < maxRequests; i++)
{
if (buf[i].Busy)
{
BLP[buf[i].mreq.request.requesterID]++;
if (Simulator.network.nodes[buf[i].mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.BLPTotal[buf[i].mreq.request.requesterID].Add();
}
if (Simulator.network.nodes[buf[i].mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.DRAMUtilization[buf[i].mreq.request.requesterID].Add();
}
}
}
for (int i = 0; i < Config.Ng; i++)
{
IATCounter[i]++;
BufferUsed[i] += (float)loadPerProc[i] / (float)maxRequests;
// Console.WriteLine("LoadperProc[{0}] = {1}, BLP[{0}] = {2}",i, loadPerProc[i], BLP[i]);
}
if (IATCounter[Config.Ng - 1] > Config.IAT_threshold)
{
triggerCPUPrio = true;
}
else
{
if (triggerDelay < Config.IAT_thres_delay)
{
triggerDelay++;
}
else
{
triggerDelay = 0;
triggerCPUPrio = false;
}
}
// anyone done? invoke cb()
for (int i = 0; i < maxRequests; i++)
{
if (buf[i].Valid && buf[i].Completed)
{
#if FIFORRDEBUG
Console.WriteLine("Mem req. from src {0} finish at {1} (this is where we deallocate buffers queue)", buf[i].mreq.request.requesterID, Simulator.CurrentRound);
#endif
MemoryRequest mreq = buf[i].mreq;
// For RBH and BLP stats
memServiceCount[mreq.request.requesterID]++;
// Console.WriteLine("Decrementing load at src {0}", mreq.request.requesterID);
loadPerProc[mreq.request.requesterID]--;
/* HWA Code */ // bug fixed??
// if(mreq.from_GPU)
if (Simulator.network.nodes[mreq.request.requesterID].cpu.is_GPU())
{
/* HWA Code End */
GPURequests--;
}
/* HWA Code */
else if (Simulator.network.nodes[mreq.request.requesterID].cpu.is_HWA())
{
HWARequests--;
}
/* HWA Code End */
else
{
coreRequests--;
}
if (mreq.request.write)
{
writeRequests--;
if (Simulator.network.nodes[mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.DRAMWritesPerSrc[mreq.request.requesterID].Add();
}
if (!buf[i].issuedActivation)
{
RBHCount[mreq.request.requesterID]++;
}
}
else
{
readRequests--;
if (Simulator.network.nodes[mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.DRAMReadsPerSrc[mreq.request.requesterID].Add();
}
if (!buf[i].issuedActivation)
{
RBHCount[mreq.request.requesterID]++;
}
}
// Stats in Common/stats.cs
if (Simulator.network.nodes[mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.DRAMTotalLatencyPerSrc[mreq.request.requesterID].Add(Simulator.CurrentRound - buf[i].whenArrived);
}
if (Simulator.network.nodes[mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.DRAMTotalArrayLatencyPerSrc[mreq.request.requesterID].Add(Simulator.CurrentRound - buf[i].whenStarted);
}
if (Simulator.network.nodes[mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.DRAMTotalQueueLatencyPerSrc[mreq.request.requesterID].Add(buf[i].whenStarted - buf[i].whenArrived);
}
//
RequestsPerBank[mreq.bank_index]--;
Simulator.QoSCtrl.RequestsPerBank[mreq.bank_index]--;
if (Simulator.network.nodes[mreq.request.requesterID].cpu.is_HWA())
{
Simulator.QoSCtrl.CPURequestsPerBank[mreq.bank_index]--;
}
if (!buf[i].issuedActivation)
{
this.ComboHitsCounts++;
}
else
{
if (Simulator.network.nodes[mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.ComboHitsBin.Add(ComboHitsCounts);
}
this.ComboHitsCounts = 0;
}
//InterArrvalTime stat
if (Simulator.network.nodes[mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.CumulativeArrivalTime[mreq.request.requesterID].Add(IATCounter[mreq.request.requesterID]);
}
//Simulator.stats.ArrivaltimeBin[mreq.request.requesterID].Add((float)IATCounter[mreq.request.requesterID]);
if (Simulator.network.nodes[mreq.request.requesterID].m_cpu.m_stats_active)
{
Simulator.stats.ArrivaltimeBin.Add((float)IATCounter[mreq.request.requesterID]);
}
IATCounter[mreq.request.requesterID] = 0;
//Deallocation and callback
/* HWA CODE */
// if( mreq.request.requesterID == 17 )
// buf[i].print_stat(mem_id);
/* HWA CODE END */
buf[i].Deallocate();
mreq.cb();
break;
}
}
for (int i = 0; i < numBanks; i++)
{
Simulator.QoSCtrl.dram_bank_req_cnt[Config.memory.numChannels * mem_id + id, i] += (ulong)RequestsPerBank[i];
}
Simulator.QoSCtrl.dram_bank_req_cnt_base[Config.memory.numChannels * mem_id + id]++;
sched.Tick();
}
// This is needed just because of the wacky binding/scoping rules used by
// delegates; without this, you can't keep recursively wrapping delegates
// within a loop.
protected void WrapDelegates(MemoryRequest m1, MemoryRequest m2)
{
Simulator.Ready prev_cb = m1.cb;
m1.cb = delegate() { prev_cb(); m2.cb(); };
}