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Support Input/output internal power #344

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Support Input/output internal power #344

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c42acca
Support input and output internal power
nataliakokoromyti Nov 24, 2025
543f180
fix naming + rm reporting fn
nataliakokoromyti Dec 21, 2025
9b3e1c6
fix PowerClass.hh naming conventions
nataliakokoromyti Dec 21, 2025
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6 changes: 6 additions & 0 deletions include/sta/PowerClass.hh
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Original file line number Diff line number Diff line change
Expand Up @@ -78,16 +78,22 @@ public:
PowerResult();
void clear();
float internal() const { return internal_; }
float inputInternal() const { return input_internal_; }
float outputInternal() const { return output_internal_; }
float switching() const { return switching_; }
float leakage() const { return leakage_; }
float total() const;
void incr(PowerResult &result);
void incrInternal(float pwr);
void incrInputInternal(float pwr);
void incrOutputInternal(float pwr);
void incrSwitching(float pwr);
void incrLeakage(float pwr);

private:
float internal_;
float input_internal_;
float output_internal_;
float switching_;
float leakage_;
};
Expand Down
31 changes: 30 additions & 1 deletion power/Power.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -1011,6 +1011,7 @@ Power::findInputInternalPower(const Pin *pin,
internal += port_internal;
}
result.incrInternal(internal);
result.incrInputInternal(internal);
}
}
}
Expand Down Expand Up @@ -1102,7 +1103,9 @@ Power::findOutputInternalPower(const LibertyPort *to_port,
FuncExpr *func = to_port->function();

map<const char*, float, StringLessIf> pg_duty_sum;
int arc_count = 0;
for (InternalPower *pwr : corner_cell->internalPowers(to_corner_port)) {
arc_count += 1;
const LibertyPort *from_corner_port = pwr->relatedPort();
if (from_corner_port) {
const Pin *from_pin = findLinkPin(inst, from_corner_port);
Expand All @@ -1113,10 +1116,13 @@ Power::findOutputInternalPower(const LibertyPort *to_port,
pg_duty_sum[related_pg_pin] += from_density * duty;
}
}
// The number of pins that consume internal power in total.
float internal_power_pin_count = arc_count / (float) pg_duty_sum.size();

debugPrint(debug_, "power", 2,
" when act/ns duty wgt energy power");
float internal = 0.0;
float out_internal = 0.0;
for (InternalPower *pwr : corner_cell->internalPowers(to_corner_port)) {
FuncExpr *when = pwr->when();
const char *related_pg_pin = pwr->relatedPgPin();
Expand Down Expand Up @@ -1157,6 +1163,7 @@ Power::findOutputInternalPower(const LibertyPort *to_port,
}
}
float port_internal = weight * energy * to_activity.density();
float avg_arc_internal = energy * to_activity.density();
debugPrint(debug_, "power", 2, "%3s -> %-3s %6s %.3f %.3f %.3f %9.2e %9.2e %s",
from_corner_port ? from_corner_port->name() : "-" ,
to_port->name(),
Expand All @@ -1168,8 +1175,13 @@ Power::findOutputInternalPower(const LibertyPort *to_port,
port_internal,
related_pg_pin ? related_pg_pin : "no pg_pin");
internal += port_internal;
out_internal += avg_arc_internal;
}
result.incrInternal(internal);
if (internal_power_pin_count)
result.incrOutputInternal(out_internal / internal_power_pin_count);
else
result.incrOutputInternal(0.0);
}

float
Expand Down Expand Up @@ -1603,15 +1615,19 @@ Power::deletePinBefore(const Pin *)

PowerResult::PowerResult() :
internal_(0.0),
input_internal_(0.0),
output_internal_(0.0),
switching_(0.0),
leakage_(0.0)
{
}

void
PowerResult::clear()
PowerResult::clear()
{
internal_ = 0.0;
input_internal_ = 0.0;
output_internal_ = 0.0;
switching_ = 0.0;
leakage_ = 0.0;
}
Expand All @@ -1627,6 +1643,17 @@ PowerResult::incrInternal(float pwr)
{
internal_ += pwr;
}
void
PowerResult::incrInputInternal(float pwr)
{
input_internal_ += pwr;
}

void
PowerResult::incrOutputInternal(float pwr)
{
output_internal_ += pwr;
}

void
PowerResult::incrSwitching(float pwr)
Expand All @@ -1644,6 +1671,8 @@ void
PowerResult::incr(PowerResult &result)
{
internal_ += result.internal_;
input_internal_ += result.input_internal_;
output_internal_ += result.output_internal_;
switching_ += result.switching_;
leakage_ += result.leakage_;
}
Expand Down
17 changes: 17 additions & 0 deletions power/Power.i
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,13 @@ pushPowerResultFloats(PowerResult &power,
powers.push_back(power.leakage());
powers.push_back(power.total());
}
static void
pushInternalPowerComponents(PowerResult &power,
FloatSeq &powers)
{
powers.push_back(power.inputInternal());
powers.push_back(power.outputInternal());
}

FloatSeq
design_power(const Corner *corner)
Expand All @@ -62,6 +69,16 @@ design_power(const Corner *corner)
return powers;
}

FloatSeq
internal_power_components(const Corner *corner)
{
PowerResult total, sequential, combinational, clock, macro, pad;
Sta::sta()->power(corner, total, sequential, combinational, clock, macro, pad);
FloatSeq powers;
pushInternalPowerComponents(total, powers);
return powers;
}

FloatSeq
instance_power(Instance *inst,
const Corner *corner)
Expand Down