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GPU TPC: Assume more sector track hits for low field data #15069

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GPU TPC: Assume more sector track hits for low field data #15069

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6 changes: 4 additions & 2 deletions GPU/GPUTracking/DataTypes/GPUMemorySizeScalers.h
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,9 @@ struct GPUMemorySizeScalers {
double tpcClustersPerPeak = 0.9;
double tpcStartHitsPerHit = 0.08;
double tpcTrackletsPerStartHit = 0.8;
double tpcTrackletsPerStartHitLowField = 0.85;
double tpcTrackletHitsPerHit = 5;
double tpcTrackletHitsPerHitLowField = 7;
double tpcSectorTracksPerHit = 0.02;
double tpcSectorTrackHitsPerHit = 0.8;
double tpcSectorTrackHitsPerHitWithRejection = 1.0;
Expand Down Expand Up @@ -80,8 +82,8 @@ struct GPUMemorySizeScalers {
inline size_t NTPCClusters(size_t tpcDigits, bool perSector = false) { return getValue(perSector ? tpcMaxSectorClusters : tpcMaxClusters, (conservative ? 1.0 : tpcClustersPerPeak) * NTPCPeaks(tpcDigits, perSector)); }
inline size_t NTPCStartHits(size_t tpcHits) { return getValue(tpcMaxStartHits, tpcHits * tpcStartHitsPerHit); }
inline size_t NTPCRowStartHits(size_t tpcHits) { return getValue(tpcMaxRowStartHits, std::max<size_t>(NTPCStartHits(tpcHits) * (tpcHits < 30000000 ? 20 : 12) / GPUCA_ROW_COUNT, tpcMinRowStartHits)); }
inline size_t NTPCTracklets(size_t tpcHits) { return getValue(tpcMaxTracklets, NTPCStartHits(tpcHits) * tpcTrackletsPerStartHit); }
inline size_t NTPCTrackletHits(size_t tpcHits) { return getValue(tpcMaxTrackletHits, hitOffset + tpcHits * tpcTrackletHitsPerHit); }
inline size_t NTPCTracklets(size_t tpcHits, bool lowField) { return getValue(tpcMaxTracklets, NTPCStartHits(tpcHits) * (lowField ? tpcTrackletsPerStartHitLowField : tpcTrackletsPerStartHit)); }
inline size_t NTPCTrackletHits(size_t tpcHits, bool lowField) { return getValue(tpcMaxTrackletHits, hitOffset + tpcHits * (lowField ? tpcTrackletHitsPerHitLowField : tpcTrackletHitsPerHit)); }
inline size_t NTPCSectorTracks(size_t tpcHits) { return getValue(tpcMaxSectorTracks, tpcHits * tpcSectorTracksPerHit); }
inline size_t NTPCSectorTrackHits(size_t tpcHits, uint8_t withRejection = 0) { return getValue(tpcMaxSectorTrackHits, tpcHits * (withRejection ? tpcSectorTrackHitsPerHitWithRejection : tpcSectorTrackHitsPerHit)); }
inline size_t NTPCMergedTracks(size_t tpcSectorTracks) { return getValue(tpcMaxMergedTracks, tpcSectorTracks * (conservative ? 1.0 : tpcMergedTrackPerSectorTrack)); }
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5 changes: 3 additions & 2 deletions GPU/GPUTracking/SectorTracker/GPUTPCTracker.cxx
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Expand Up @@ -144,8 +144,9 @@ void GPUTPCTracker::SetMaxData(const GPUTrackingInOutPointers& io)
} else {
mNMaxRowStartHits = mRec->MemoryScalers()->NTPCRowStartHits(mData.NumberOfHits());
}
mNMaxTracklets = mRec->MemoryScalers()->NTPCTracklets(mData.NumberOfHits());
mNMaxRowHits = mRec->MemoryScalers()->NTPCTrackletHits(mData.NumberOfHits());
bool lowField = CAMath::Abs(Param().bzkG) < 4;
mNMaxTracklets = mRec->MemoryScalers()->NTPCTracklets(mData.NumberOfHits(), lowField);
mNMaxRowHits = mRec->MemoryScalers()->NTPCTrackletHits(mData.NumberOfHits(), lowField);
mNMaxTracks = mRec->MemoryScalers()->NTPCSectorTracks(mData.NumberOfHits());
if (io.clustersNative) {
uint32_t sectorOffset = mISector >= GPUCA_NSECTORS / 2 ? GPUCA_NSECTORS / 2 : 0;
Expand Down