public override void InjectFlit(Flit f)
{
if (Config.afc_real_classes)
{
Simulator.stats.afc_vnet[f.packet.getClass()].Add();
}
else
{
Simulator.stats.afc_vnet[this.ID].Add();
}
if (m_buffered)
{
AFCBufferSlot slot = getFreeBufferSlot(f);
m_buf[LOCAL_INDEX, f.packet.getClass()].Enqueue(slot);
m_buf_occupancy++;
Simulator.stats.afc_buf_write.Add();
Simulator.stats.afc_buf_write_bysrc[ID].Add();
}
else
{
if (m_injectSlot != null)
{
throw new Exception("Trying to inject twice in one cycle");
}
m_injectSlot = f;
}
}
public override void InjectFlit(Flit f)
{
Simulator.stats.afc_vnet[f.packet.getClass()].Add();
if (m_buffered)
{
AFCBufferSlot slot = getFreeBufferSlot(f);
f.enterBuffer = Simulator.CurrentRound;
m_buf[4, f.packet.getClass()].Enqueue(slot);
m_buf_occupancy++;
Simulator.stats.afc_buf_write.Add();
Simulator.stats.afc_buf_write_bysrc[ID].Add();
}
else
{
if (m_injectSlot != null)
{
throw new Exception("Trying to inject twice in one cycle");
}
m_injectSlot = f;
}
}
AFCBufferSlot getFreeBufferSlot(Flit f)
{
if (m_freeAFCSlots.Count > 0)
{
AFCBufferSlot s = m_freeAFCSlots.Dequeue();
s.flit = f;
return(s);
}
else
{
return(new AFCBufferSlot(f));
}
}
void returnFreeBufferSlot(AFCBufferSlot s)
{
m_freeAFCSlots.Enqueue(s);
}
protected override void _doStep()
{
int flit_count = 0;
for (int dir = 0; dir < TOTAL_DIR; dir++)
{
if (linkIn[dir] != null && linkIn[dir].Out != null)
{
flit_count++;
}
}
m_util_avg.Add((double)flit_count / neighbors);
Simulator.stats.afc_avg.Add(m_util_avg.Avg);
Simulator.stats.afc_avg_bysrc[ID].Add(m_util_avg.Avg);
bool old_status = m_buffered;
bool new_status = old_status;
bool gossip_induced = false;
if (Config.afc_force)
{
new_status = Config.afc_force_buffered;
}
else
{
if (!m_buffered &&
(m_util_avg.Avg > Config.afc_buf_threshold))
{
new_status = true;
}
if (m_buffered &&
(m_util_avg.Avg < Config.afc_bless_threshold) &&
m_buf_occupancy == 0)
{
new_status = false;
}
// check at least one free slot in downstream routers; if not, gossip-induced switch
for (int n = 0; n < TOTAL_DIR; n++)
{
Router_AFC nr = getNeigh(n);
if (nr == null)
{
continue;
}
//neighbor's perspective of directoin on the current node.
int oppDir = Simulator.DIR_NONE;
if (Config.bFtfly)
{
oppDir = (n < Simulator.DIR_Y_0)?(coord.x):(Simulator.DIR_Y_0 + coord.y);
}
else
{
oppDir = (n + 2) % 4;
}
if (oppDir == Simulator.DIR_NONE)
{
throw new Exception("AFC-Unable to determine neighbor's direction toward current node.");
}
for (int vnet = 0; vnet < Config.afc_vnets; vnet++)
{
int occupancy = nr.m_buf[oppDir, vnet].Count;
if ((capacity(vnet) - occupancy) < 2)
{
gossip_induced = true;
break;
}
}
}
if (gossip_induced)
{
new_status = true;
}
}
// perform switching and stats accumulation
if (old_status && !new_status)
{
switchBufferless();
Simulator.stats.afc_switch.Add();
Simulator.stats.afc_switch_bless.Add();
Simulator.stats.afc_switch_bysrc[ID].Add();
Simulator.stats.afc_switch_bless_bysrc[ID].Add();
}
if (!old_status && new_status)
{
switchBuffered();
Simulator.stats.afc_switch.Add();
Simulator.stats.afc_switch_buf.Add();
Simulator.stats.afc_switch_bysrc[ID].Add();
Simulator.stats.afc_switch_buf_bysrc[ID].Add();
}
if (m_buffered)
{
Simulator.stats.afc_buffered.Add();
Simulator.stats.afc_buffered_bysrc[ID].Add();
if (gossip_induced)
{
Simulator.stats.afc_gossip.Add();
Simulator.stats.afc_gossip_bysrc[ID].Add();
}
}
else
{
Simulator.stats.afc_bless.Add();
Simulator.stats.afc_bless_bysrc[ID].Add();
}
if (m_buffered)
{
Simulator.stats.afc_buf_enabled.Add();
Simulator.stats.afc_buf_enabled_bysrc[ID].Add();
Simulator.stats.afc_buf_occupancy.Add(m_buf_occupancy);
Simulator.stats.afc_buf_occupancy_bysrc[ID].Add(m_buf_occupancy);
#if debug
Console.WriteLine("input buffer enqueue");
#endif
// grab inputs into buffers
for (int dir = 0; dir < TOTAL_DIR; dir++)
{
if (linkIn[dir] != null && linkIn[dir].Out != null)
{
Flit f = linkIn[dir].Out;
linkIn[dir].Out = null;
AFCBufferSlot slot = getFreeBufferSlot(f);
m_buf[dir, f.packet.getClass()].Enqueue(slot);
m_buf_occupancy++;
Simulator.stats.afc_buf_write.Add();
Simulator.stats.afc_buf_write_bysrc[ID].Add();
}
}
// perform arbitration: (i) collect heads of each virtual-net
// heap (which represents many VCs) to obtain a single requester
// per physical channel; (ii) request outputs among these
// requesters based on DOR; (iii) select a single winner
// per output
for (int i = 0; i < TOTAL_PORTS; i++)
{
requesters[i] = null;
requester_dir[i] = -1;
}
#if debug
Console.WriteLine("request enqueue");
#endif
// find the highest-priority vnet head for each input PC
for (int pc = 0; pc < TOTAL_PORTS; pc++)
{
for (int vnet = 0; vnet < Config.afc_vnets; vnet++)
{
if (m_buf[pc, vnet].Count > 0)
{
// Sanity check: self loop channel shouldn't have any flits
if (Config.bFtfly && (pc == coord.x || pc == 4 + coord.y))
{
throw new Exception("Self-loop buffer should be empty!");
}
AFCBufferSlot top = m_buf[pc, vnet].Peek();
#if debug
Console.WriteLine("flit dest ({0},{1})", top.flit.dest.x,
top.flit.dest.y);
#endif
PreferredDirection pd = determineDirection(top.flit, coord);
int outdir = (pd.xDir != Simulator.DIR_NONE) ?
pd.xDir : pd.yDir;
if (outdir == Simulator.DIR_NONE)
{
outdir = LOCAL_INDEX; // local ejection
}
// skip if (i) not local ejection and (ii)
// destination router is buffered and (iii)
// no credits left to destination router
if (outdir != LOCAL_INDEX)
{
Router_AFC nrouter = (Router_AFC)neigh[outdir];
int ndir = (outdir + 2) % 4;
if (Config.bFtfly)
{
ndir = (outdir < 4)?(coord.x):(4 + coord.y);
}
#if debug
Console.WriteLine("non local request check coord ({2},{3})-outdir {0} ndir {1}",
outdir, ndir, coord.x, coord.y);
#endif
if (nrouter.m_buf[ndir, vnet].Count >= capacity(vnet) &&
nrouter.m_buffered)
{
continue;
}
}
#if debug
Console.WriteLine("contend req queue");
#endif
// otherwise, contend for top requester from this
// physical channel
if (requesters[pc] == null ||
top.CompareTo(requesters[pc]) < 0)
{
requesters[pc] = top;
requester_dir[pc] = outdir;
}
}
}
}
#if debug
Console.WriteLine("output arb");
#endif
// find the highest-priority requester for each output, and pop
// it from its heap
for (int outdir = 0; outdir < TOTAL_PORTS; outdir++)
{
// Self-loop ports that don't exist
if (Config.bFtfly && (outdir == coord.x || outdir == 4 + coord.y))
{
continue;
}
AFCBufferSlot top = null;
AFCBufferSlot top2 = null;
int top_indir = -1;
int top2_indir = -1;
int nrWantToEject = 0;
for (int req = 0; req < TOTAL_PORTS; req++)
{
// Self-loop ports that don't exist
if (Config.bFtfly && (req == coord.x || req == 4 + coord.y))
{
if (requester_dir[req] != Simulator.DIR_NONE &&
requesters[req] != null)
{
throw new Exception("Error: Non-empty self-loop requester queue!");
}
continue;
}
#if debug
Console.WriteLine("output arb with dir {0} in req {1}", outdir, req);
#endif
int _dir = requester_dir[req];
//
// FBFLY Sanity check: make sure no inputs are going
// into self-loop non-existing dirs.
//
if (Config.bFtfly && (_dir == coord.x || _dir == 4 + coord.y))
{
throw new Exception("Input flit enters self-loop ports!\n");
}
if (requesters[req] != null && _dir == outdir)
{
if (req == LOCAL_INDEX && top != null && requesters[req].CompareTo(top) > 0)
{
statsStarve(requesters[req].flit);
}
if (top == null ||
requesters[req].CompareTo(top) < 0)
{
top2 = top;
top2_indir = top_indir;
top = requesters[req];
top_indir = req;
nrWantToEject++;
}
}
}
if (top_indir != -1)
{
m_buf[top_indir, top.flit.packet.getClass()].Dequeue();
if (top.inTimeStamp == Simulator.CurrentRound)
{
Simulator.stats.buffer_bypasses.Add();
}
Simulator.stats.afc_buf_read.Add();
Simulator.stats.afc_buf_read_bysrc[ID].Add();
Simulator.stats.afc_xbar.Add();
Simulator.stats.afc_xbar_bysrc[ID].Add();
if (top_indir == LOCAL_INDEX)
{
statsInjectFlit(top.flit);
}
// propagate to next router (or eject)
if (outdir == LOCAL_INDEX)
{
acceptFlit(top.flit);
}
else
{
linkOut[outdir].In = top.flit;
//Rachata: Per-link stat
Simulator.stats.link_used[(this.ID * (TOTAL_PORTS - 1) + outdir)].Add();
}
returnFreeBufferSlot(top);
m_buf_occupancy--;
}
if (Config.ejectCount == 2 && outdir == LOCAL_INDEX && top2_indir != -1)
{
m_buf[top2_indir, top2.flit.packet.getClass()].Dequeue();
if (top2 != null)
{
acceptFlit(top2.flit);
}
returnFreeBufferSlot(top2);
m_buf_occupancy--;
}
}
}
else
{
//Flit eject = ejectLocal();
Flit[] eject = new Flit[Config.ejectCount];
int ejCount = 0;
for (int i = 0; i < Config.ejectCount; i++)
{
eject[ejCount] = ejectLocal();
ejCount++;
}
for (int i = 0; i < INPUT_NUM; i++)
{
input[i] = null;
}
// grab inputs into a local array so we can sort
int c = 0;
for (int dir = 0; dir < TOTAL_DIR; dir++)
{
if (linkIn[dir] != null && linkIn[dir].Out != null)
{
input[c++] = linkIn[dir].Out;
linkIn[dir].Out.inDir = dir;
linkIn[dir].Out = null;
}
}
// sometimes network-meddling such as flit-injection can put unexpected
// things in outlinks...
int outCount = 0;
for (int dir = 0; dir < TOTAL_DIR; dir++)
{
if (linkOut[dir] != null && linkOut[dir].In != null)
{
outCount++;
}
}
if (Config.bFtfly == true && neighbors != 6)
{
throw new Exception("ftfly router flit: WRONG NUMBER OF NEIGHBORS");
}
bool wantToInject = m_injectSlot != null;
bool canInject = (c + outCount) < neighbors;
bool starved = wantToInject && !canInject;
if (starved)
{
Flit starvedFlit = m_injectSlot;
Simulator.controller.reportStarve(coord.ID);
statsStarve(starvedFlit);
}
if (canInject && wantToInject)
{
Flit inj = null;
if (m_injectSlot != null)
{
inj = m_injectSlot;
m_injectSlot = null;
}
else
{
throw new Exception("trying to inject a null flit");
}
input[c++] = inj;
statsInjectFlit(inj);
}
//if (eject != null)
// acceptFlit(eject);
for (int i = 0; i < Config.ejectCount; i++)
{
if (eject[i] != null)
{
acceptFlit(eject[i]);
}
}
// inline bubble sort is faster for this size than Array.Sort()
// sort input[] by descending priority. rank(a,b) < 0 iff a has higher priority.
for (int i = 0; i < INPUT_NUM; i++)
{
for (int j = i + 1; j < INPUT_NUM; j++)
{
if (input[j] != null &&
(input[i] == null ||
rank(input[j], input[i]) < 0))
{
Flit t = input[i];
input[i] = input[j];
input[j] = t;
}
}
}
// assign outputs
for (int i = 0; i < INPUT_NUM && input[i] != null; i++)
{
PreferredDirection pd = determineDirection(input[i], coord);
int outDir = -1;
int freeDir = -1;
//
// For mesh, only 1 direction is the desired direction, but for
// flattened butterfly, all directions on the same axis are valid.
// However, fbfly considers the direct express link first.
//
if (pd.xDir != Simulator.DIR_NONE && linkOutInputFree(pd.xDir, out freeDir) == true)
{
if (freeDir == Simulator.DIR_NONE)
{
throw new Exception("Broken linkout function.");
}
linkOut[freeDir].In = input[i];
outDir = freeDir;
}
else if (pd.yDir != Simulator.DIR_NONE && linkOutInputFree(pd.yDir, out freeDir) == true)
{
if (freeDir == Simulator.DIR_NONE)
{
throw new Exception("Broken linkout function.");
}
linkOut[freeDir].In = input[i];
outDir = freeDir;
}
// deflect!
else
{
input[i].Deflected = true;
int dir = 0;
if (Config.randomize_defl)
{
do
{
dir = Simulator.rand.Next(TOTAL_DIR); // randomize deflection dir (so no bias)
}while (Config.bFtfly == true && (dir == coord.x || dir == coord.y));
}
for (int count = 0; count < TOTAL_DIR; count++, dir = (dir + 1) % TOTAL_DIR)
{
if (linkOut[dir] != null && linkOut[dir].In == null)
{
linkOut[dir].In = input[i];
outDir = dir;
break;
}
}
if (outDir == -1)
{
throw new Exception(
String.Format("Ran out of outlinks in arbitration at node {0} on input {1} cycle {2} flit {3} c {4} neighbors {5} outcount {6}", coord, i, Simulator.CurrentRound, input[i], c, neighbors, outCount));
}
}
}
}
}
void returnFreeBufferSlot(AFCBufferSlot s)
{
m_freeAFCSlots.Enqueue(s);
}
protected override void _doStep()
{
int flit_count = 0;
for (int dir = 0; dir < 4; dir++)
{
if (linkIn[dir] != null && linkIn[dir].Out != null)
{
flit_count++;
}
}
m_util_avg.Add((double)flit_count / neighbors);
Simulator.stats.afc_avg.Add(m_util_avg.Avg);
Simulator.stats.afc_avg_bysrc[ID].Add(m_util_avg.Avg);
bool old_status = m_buffered;
bool new_status = old_status;
bool gossip_induced = false;
if (Config.afc_force)
{
new_status = Config.afc_force_buffered;
}
else
{
if (!m_buffered &&
(m_util_avg.Avg > Config.afc_buf_threshold))
{
new_status = true;
}
if (m_buffered &&
(m_util_avg.Avg < Config.afc_bless_threshold) &&
m_buf_occupancy == 0)
{
new_status = false;
}
// check at least one free slot in downstream routers; if not, gossip-induced switch
for (int n = 0; n < 4; n++)
{
Router_AFC nr = getNeigh(n);
if (nr == null)
{
continue;
}
int oppDir = (n + 2) % 4;
for (int vnet = 0; vnet < Config.afc_vnets; vnet++)
{
int occupancy = nr.m_buf[oppDir, vnet].Count;
if ((capacity(vnet) - occupancy) < 2)
{
gossip_induced = true;
break;
}
}
}
if (gossip_induced)
{
new_status = true;
}
}
// perform switching and stats accumulation
if (old_status && !new_status)
{
switchBufferless();
Simulator.stats.afc_switch.Add();
Simulator.stats.afc_switch_bless.Add();
Simulator.stats.afc_switch_bysrc[ID].Add();
Simulator.stats.afc_switch_bless_bysrc[ID].Add();
}
if (!old_status && new_status)
{
switchBuffered();
Simulator.stats.afc_switch.Add();
Simulator.stats.afc_switch_buf.Add();
Simulator.stats.afc_switch_bysrc[ID].Add();
Simulator.stats.afc_switch_buf_bysrc[ID].Add();
}
if (m_buffered)
{
Simulator.stats.afc_buffered.Add();
Simulator.stats.afc_buffered_bysrc[ID].Add();
if (gossip_induced)
{
Simulator.stats.afc_gossip.Add();
Simulator.stats.afc_gossip_bysrc[ID].Add();
}
}
else
{
Simulator.stats.afc_bless.Add();
Simulator.stats.afc_bless_bysrc[ID].Add();
}
if (m_buffered)
{
Simulator.stats.afc_buf_enabled.Add();
Simulator.stats.afc_buf_enabled_bysrc[ID].Add();
Simulator.stats.afc_buf_occupancy.Add(m_buf_occupancy);
Simulator.stats.afc_buf_occupancy_bysrc[ID].Add(m_buf_occupancy);
// grab inputs into buffers
for (int dir = 0; dir < 4; dir++)
{
if (linkIn[dir] != null && linkIn[dir].Out != null)
{
Flit f = linkIn[dir].Out;
linkIn[dir].Out = null;
f.bufferInTime = Simulator.CurrentRound;
AFCBufferSlot slot = getFreeBufferSlot(f);
m_buf[dir, f.packet.getClass()].Enqueue(slot);
m_buf_occupancy++;
Simulator.stats.afc_buf_write.Add();
Simulator.stats.afc_buf_write_bysrc[ID].Add();
}
}
// perform arbitration: (i) collect heads of each virtual-net
// heap (which represents many VCs) to obtain a single requester
// per physical channel; (ii) request outputs among these
// requesters based on DOR; (iii) select a single winner
// per output
for (int i = 0; i < 5; i++)
{
requesters[i] = null;
requester_dir[i] = -1;
}
// find the highest-priority vnet head for each input PC
for (int pc = 0; pc < 5; pc++)
{
for (int vnet = 0; vnet < Config.afc_vnets; vnet++)
{
if (m_buf[pc, vnet].Count > 0)
{
AFCBufferSlot top = m_buf[pc, vnet].Peek();
PreferredDirection pd = determineDirection(top.flit, coord);
int outdir = (pd.xDir != Simulator.DIR_NONE) ?
pd.xDir : pd.yDir;
if (outdir == Simulator.DIR_NONE)
{
outdir = 4; // local ejection
}
// skip if (i) not local ejection and (ii)
// destination router is buffered and (iii)
// no credits left to destination router
if (outdir != 4)
{
Router_AFC nrouter = (Router_AFC)neigh[outdir];
int ndir = (outdir + 2) % 4;
if (nrouter.m_buf[ndir, vnet].Count >= capacity(vnet) &&
nrouter.m_buffered)
{
continue;
}
}
// otherwise, contend for top requester from this
// physical channel
if (requesters[pc] == null ||
top.CompareTo(requesters[pc]) < 0)
{
requesters[pc] = top;
requester_dir[pc] = outdir;
}
}
}
}
// find the highest-priority requester for each output, and pop
// it from its heap
for (int outdir = 0; outdir < 5; outdir++)
{
AFCBufferSlot top = null;
AFCBufferSlot top2 = null;
int top_indir = -1;
int top2_indir = -1;
int nrWantToEject = 0;
for (int req = 0; req < 5; req++)
{
if (requesters[req] != null &&
requester_dir[req] == outdir)
{
if (top == null ||
requesters[req].CompareTo(top) < 0)
{
top2 = top;
top2_indir = top_indir;
top = requesters[req];
top_indir = req;
nrWantToEject++;
}
}
}
if (outdir == 4)
{
switch (nrWantToEject)
{
case 0: Simulator.stats.eject_0.Add(); break;
case 1: Simulator.stats.eject_1.Add(); break;
case 2: Simulator.stats.eject_2.Add(); break;
case 3: Simulator.stats.eject_3.Add(); break;
case 4: Simulator.stats.eject_4.Add(); break;
default: throw new Exception("Ejection problem");
}
}
if (top_indir != -1)
{
m_buf[top_indir, top.flit.packet.getClass()].Dequeue();
if (top.inTimeStamp == Simulator.CurrentRound)
{
Simulator.stats.buffer_bypasses.Add();
}
Simulator.stats.buffer_comparisons.Add();
Simulator.stats.afc_buf_read.Add();
Simulator.stats.afc_buf_read_bysrc[ID].Add();
Simulator.stats.afc_xbar.Add();
Simulator.stats.afc_xbar_bysrc[ID].Add();
if (top_indir == 4)
{
statsInjectFlit(top.flit);
}
// propagate to next router (or eject)
if (outdir == 4)
{
acceptFlit(top.flit);
}
else
{
linkOut[outdir].In = top.flit;
}
returnFreeBufferSlot(top);
m_buf_occupancy--;
}
if (Config.ejectCount == 2 && outdir == 4 && top2_indir != -1)
{
m_buf[top2_indir, top2.flit.packet.getClass()].Dequeue();
if (top2 != null)
{
acceptFlit(top2.flit);
}
returnFreeBufferSlot(top2);
m_buf_occupancy--;
}
}
}
else
{
Flit[] eject = new Flit[4];
eject[0] = eject[1] = eject[2] = eject[3] = null;
int ejCount = 0;
for (int i = 0; i < Config.ejectCount; i++)
{
eject[ejCount] = ejectLocal();
ejCount++;
}
for (int i = 0; i < 4; i++)
{
input[i] = null;
}
// grab inputs into a local array so we can sort
int c = 0;
for (int dir = 0; dir < 4; dir++)
{
if (linkIn[dir] != null && linkIn[dir].Out != null)
{
input[c++] = linkIn[dir].Out;
linkIn[dir].Out.inDir = dir;
linkIn[dir].Out = null;
}
}
// sometimes network-meddling such as flit-injection can put unexpected
// things in outlinks...
int outCount = 0;
for (int dir = 0; dir < 4; dir++)
{
if (linkOut[dir] != null && linkOut[dir].In != null)
{
outCount++;
}
}
bool wantToInject = m_injectSlot != null;
bool canInject = (c + outCount) < neighbors;
bool starved = wantToInject && !canInject;
if (starved)
{
Flit starvedFlit = m_injectSlot;
Simulator.controller.reportStarve(coord.ID);
statsStarve(starvedFlit);
}
if (canInject && wantToInject)
{
Flit inj = null;
if (m_injectSlot != null)
{
inj = m_injectSlot;
m_injectSlot = null;
}
else
{
throw new Exception("trying to inject a null flit");
}
input[c++] = inj;
#if DEBUG
Console.WriteLine("injecting flit {0}.{1} at node {2} cyc {3}",
m_injectSlot.packet.ID, m_injectSlot.flitNr, coord, Simulator.CurrentRound);
#endif
statsInjectFlit(inj);
}
for (int i = 0; i < Config.ejectCount; i++)
{
if (eject[i] != null)
{
acceptFlit(eject[i]);
}
}
// inline bubble sort is faster for this size than Array.Sort()
// sort input[] by descending priority. rank(a,b) < 0 iff a has higher priority.
for (int i = 0; i < 4; i++)
{
for (int j = i + 1; j < 4; j++)
{
if (input[j] != null &&
(input[i] == null ||
rank(input[j], input[i]) < 0))
{
Flit t = input[i];
input[i] = input[j];
input[j] = t;
}
}
}
// assign outputs
for (int i = 0; i < 4 && input[i] != null; i++)
{
PreferredDirection pd = determineDirection(input[i], coord);
int outDir = -1;
if (pd.xDir != Simulator.DIR_NONE && linkOut[pd.xDir].In == null)
{
linkOut[pd.xDir].In = input[i];
outDir = pd.xDir;
}
else if (pd.yDir != Simulator.DIR_NONE && linkOut[pd.yDir].In == null)
{
linkOut[pd.yDir].In = input[i];
outDir = pd.yDir;
}
// deflect!
else
{
input[i].Deflected = true;
int dir = 0;
if (Config.randomize_defl)
{
dir = Simulator.rand.Next(4); // randomize deflection dir (so no bias)
}
for (int count = 0; count < 4; count++, dir = (dir + 1) % 4)
{
if (linkOut[dir] != null && linkOut[dir].In == null)
{
linkOut[dir].In = input[i];
outDir = dir;
break;
}
}
if (outDir == -1)
{
throw new Exception(
String.Format("Ran out of outlinks in arbitration at node {0} on input {1} cycle {2} flit {3} c {4} neighbors {5} outcount {6}", coord, i, Simulator.CurrentRound, input[i], c, neighbors, outCount));
}
}
}
}
}