Skip to content

[PWGDQ] Estimate reserve size for ditracks and ditracksextra #18525

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
axti98 merged 2 commits into from
Oct 30, 2026
Merged

[PWGDQ] Estimate reserve size for ditracks and ditracksextra #18525

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
484d8f0
Estimate reserve size for ditracks and ditracksextra
sigurdnese Oct 30, 2026
8e4f242
tableReader: only reserve ditracks table size for assocs passing cuts
sigurdnese Oct 30, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
24 changes: 22 additions & 2 deletions PWGDQ/Tasks/dqEfficiency_withAssoc.cxx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3818,8 +3818,28 @@ struct AnalysisAsymmetricPairing {
int sign1 = 0;
int sign2 = 0;
uint32_t mcDecision = 0;
ditrackList.reserve(1);
ditrackExtraList.reserve(1);

// estimate reserved size
int64_t reserveSize = 0;
for (auto const& event : events) {
auto groupedLegAAssocs = legACandidateAssocs.sliceBy(preslice, event.globalIndex());
auto groupedLegBAssocs = legBCandidateAssocs.sliceBy(preslice, event.globalIndex());
size_t nGoodA = 0;
size_t nGoodB = 0;
for (auto const& t : groupedLegAAssocs) {
if (t.isBarrelSelected_raw()) {
nGoodA++;
}
}
for (auto const& t : groupedLegBAssocs) {
if (t.isBarrelSelected_raw()) {
nGoodB++;
}
}
reserveSize += nGoodA * nGoodB;
}
ditrackList.reserve(reserveSize);
ditrackExtraList.reserve(reserveSize);

constexpr bool trackHasCov = ((TTrackFillMap & VarManager::ObjTypes::TrackCov) > 0 || (TTrackFillMap & VarManager::ObjTypes::ReducedTrackBarrelCov) > 0);

Expand Down
21 changes: 13 additions & 8 deletions PWGDQ/Tasks/tableReader_withAssoc.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3574,16 +3574,21 @@ struct AnalysisAsymmetricPairing {
// Reserve capacity for the output tables
int64_t reserveSize = 0;
for (auto const& event : events) {
if (!event.isEventSelected_bit(0)) {
continue;
}
if (fConfigRemoveCollSplittingCandidates.value && event.isEventSelected_bit(2)) {
continue;
}
auto groupedLegAAssocs = legACandidateAssocs.sliceBy(preslice, event.globalIndex());
auto groupedLegBAssocs = legBCandidateAssocs.sliceBy(preslice, event.globalIndex());
reserveSize += static_cast<int64_t>(groupedLegAAssocs.size()) *
static_cast<int64_t>(groupedLegBAssocs.size());
size_t nGoodA = 0;
size_t nGoodB = 0;
for (auto const& t : groupedLegAAssocs) {
if (t.isBarrelSelected_raw()) {
nGoodA++;
}
}
for (auto const& t : groupedLegBAssocs) {
if (t.isBarrelSelected_raw()) {
nGoodB++;
}
}
reserveSize += nGoodA * nGoodB;
}
ditrackList.reserve(reserveSize);
ditrackExtraList.reserve(reserveSize);
Expand Down
Loading