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internal power

This commit is contained in:
James Cherry 2020-05-01 09:40:26 -07:00
parent 77d507d0a5
commit 8b65b522fb
2 changed files with 71 additions and 68 deletions
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10
include/sta/StringUtil.hh
View File

@ -117,6 +117,16 @@ public:
}
};
class StringLessIf
{
public:
bool operator()(const char *string1,
const char *string2) const
{
return stringLessIf(string1, string2);
}
};
// strdup using new instead of malloc so delete can be used on the strings.
char *
stringCopy(const char *str);

129
search/Power.cc
View File

@ -622,6 +622,7 @@ Power::findOutputInternalPower(const Pin *to_pin,
debugPrint0(debug_, "power", 2, " when act/ns duty wgt energy power\n");
float duty_sum = 0.0;
map<const char*, float, StringLessIf> pg_duty_sum;
for (InternalPower *pwr : *cell->internalPowers(to_port)) {
const char *related_pg_pin = pwr->relatedPgPin();
const LibertyPort *from_port = pwr->relatedPort();
@ -634,28 +635,24 @@ Power::findOutputInternalPower(const Pin *to_pin,
}
// If all the "when" clauses exist VSS internal power is ignored.
const Pin *from_pin = network_->findPin(inst, from_port);
if (from_pin
&& ((when && internalPowerMissingWhen(cell, to_port, related_pg_pin))
|| pgNameVoltage(cell, related_pg_pin, dcalc_ap) != 0.0)) {
Vertex *from_vertex = graph_->pinLoadVertex(from_pin);
float duty;
if (infered_when) {
PwrActivity from_activity = findActivity(from_pin);
PwrActivity to_activity = findActivity(to_pin);
float duty1 = evalActivity(infered_when, inst).duty();
if (to_activity.activity() == 0.0)
duty = 0.0;
else
duty = from_activity.activity() / to_activity.activity() * duty1;
}
else if (when)
duty = evalActivity(when, inst).duty();
else if (search_->isClock(from_vertex))
duty = 1.0;
Vertex *from_vertex = graph_->pinLoadVertex(from_pin);
float duty;
if (infered_when) {
PwrActivity from_activity = findActivity(from_pin);
PwrActivity to_activity = findActivity(to_pin);
float duty1 = evalActivity(infered_when, inst).duty();
if (to_activity.activity() == 0.0)
duty = 0.0;
else
duty = 0.5;
duty_sum += duty;
duty = from_activity.activity() / to_activity.activity() * duty1;
}
else if (when)
duty = evalActivity(when, inst).duty();
else if (search_->isClock(from_vertex))
duty = 1.0;
else
duty = 0.5;
pg_duty_sum[related_pg_pin] += duty;
if (infered_when)
infered_when->deleteSubexprs();
}
@ -673,56 +670,52 @@ Power::findOutputInternalPower(const Pin *to_pin,
}
// If all the "when" clauses exist VSS internal power is ignored.
const Pin *from_pin = network_->findPin(inst, from_port);
if (from_pin
&& ((when && internalPowerMissingWhen(cell, to_port, related_pg_pin))
|| pgNameVoltage(cell, related_pg_pin, dcalc_ap) != 0.0)) {
Vertex *from_vertex = graph_->pinLoadVertex(from_pin);
float duty;
if (infered_when) {
PwrActivity from_activity = findActivity(from_pin);
PwrActivity to_activity = findActivity(to_pin);
float duty1 = evalActivity(infered_when, inst).duty();
if (to_activity.activity() == 0.0)
duty = 0.0;
else
duty = from_activity.activity() / to_activity.activity() * duty1;
}
else if (when)
duty = evalActivity(when, inst).duty();
else if (search_->isClock(from_vertex))
duty = 1.0;
Vertex *from_vertex = graph_->pinLoadVertex(from_pin);
float duty;
if (infered_when) {
PwrActivity from_activity = findActivity(from_pin);
PwrActivity to_activity = findActivity(to_pin);
float duty1 = evalActivity(infered_when, inst).duty();
if (to_activity.activity() == 0.0)
duty = 0.0;
else
duty = 0.5;
float energy = 0.0;
int tr_count = 0;
for (auto to_rf : RiseFall::range()) {
// Use unateness to find from_rf.
RiseFall *from_rf = isPositiveUnate(cell, from_port, to_port)
? to_rf
: to_rf->opposite();
float slew = delayAsFloat(graph_->slew(from_vertex, from_rf,
dcalc_ap->index()));
if (!fuzzyInf(slew)) {
float table_energy = pwr->power(to_rf, pvt, slew, load_cap);
energy += table_energy;
tr_count++;
}
}
energy /= tr_count; // average non-inf energies
float weight = duty / duty_sum;
float port_internal = weight * energy * to_activity.activity();
debugPrint9(debug_, "power", 2, " %s -> %s %6s %.2f %.2f %.2f %9.2e %9.2e %s\n",
from_port->name(),
to_port->name(),
when ? when->asString() : (infered_when ? infered_when->asString() : " "),
to_activity.activity() * 1e-9,
duty,
weight,
energy,
port_internal,
related_pg_pin ? related_pg_pin : "no pg_pin");
internal += port_internal;
duty = from_activity.activity() / to_activity.activity() * duty1;
}
else if (when)
duty = evalActivity(when, inst).duty();
else if (search_->isClock(from_vertex))
duty = 1.0;
else
duty = 0.5;
float energy = 0.0;
int tr_count = 0;
for (auto to_rf : RiseFall::range()) {
// Use unateness to find from_rf.
RiseFall *from_rf = isPositiveUnate(cell, from_port, to_port)
? to_rf
: to_rf->opposite();
float slew = delayAsFloat(graph_->slew(from_vertex, from_rf,
dcalc_ap->index()));
if (!fuzzyInf(slew)) {
float table_energy = pwr->power(to_rf, pvt, slew, load_cap);
energy += table_energy;
tr_count++;
}
}
energy /= tr_count; // average non-inf energies
float weight = duty / pg_duty_sum[related_pg_pin];
float port_internal = weight * energy * to_activity.activity();
debugPrint9(debug_, "power", 2, " %s -> %s %6s %.2f %.2f %.2f %9.2e %9.2e %s\n",
from_port->name(),
to_port->name(),
when ? when->asString() : (infered_when ? infered_when->asString() : " "),
to_activity.activity() * 1e-9,
duty,
weight,
energy,
port_internal,
related_pg_pin ? related_pg_pin : "no pg_pin");
internal += port_internal;
if (infered_when)
infered_when->deleteSubexprs();
}