Fix for row-number access

Author: ChSonnabend

GPU/GPUTracking/TPCClusterFinder/GPUTPCNNClusterizerHost.cxx

@@ -93,7 +93,7 @@ void GPUTPCNNClusterizerHost::initClusterizer(const GPUSettingsProcessingNNclust
   clustererNN.mNnClusterizerElementSize = clustererNN.mNnClusterizerChargeArraySize + (settings.nnClusterizerAddIndexData ? 3 : 0);
   clustererNN.mBoundaryMapSizeRow = 3 * clustererNN.mNnClusterizerSizeInputRow + o2::tpc::constants::MAXGLOBALPADROW;
   clustererNN.mBoundaryPadding = 11; // padding on each side to account for pad_offset. N=11 since then mIsBoundary = 24320 ~< (1.5 x 2^14 = 24576) && N must be bigger than (NPads[row(end_iroc + 1)] - NPads[row(end_iroc)])/2 (=6) for pad_offset to work
-  clustererNN.mBoundaryMapSizePadsPerRow = GPUTPCGeometry::NPads(o2::tpc::constants::MAXGLOBALPADROW) + 2 * clustererNN.mBoundaryPadding;
+  clustererNN.mBoundaryMapSizePadsPerRow = GPUTPCGeometry::NPads(o2::tpc::constants::MAXGLOBALPADROW-1) + 2 * clustererNN.mBoundaryPadding;
   clustererNN.mBoundaryMapSize = clustererNN.mBoundaryMapSizeRow * clustererNN.mBoundaryMapSizePadsPerRow;
   clustererNN.mIndexLookupSize = 3 * clustererNN.mNnClusterizerChargeArraySize; // local row, pad, time shift from flat index
   clustererNN.mNnClusterizerAddIndexData = settings.nnClusterizerAddIndexData;

GPU/GPUTracking/TPCClusterFinder/GPUTPCNNClusterizerKernels.cxx

@@ -501,7 +501,7 @@ GPUdii() void GPUTPCNNClusterizerKernels::Thread<GPUTPCNNClusterizerKernels::pub
 // THe following arithmetic is done because the network is trained with a split between IROC and OROC boundary
 GPUd() int32_t GPUTPCNNClusterizerKernels::padOffset(int32_t row_ref, int32_t row_current)
 {
-  if (row_current < 0 || row_current > o2::tpc::constants::MAXGLOBALPADROW) {
+  if (row_current < 0 || row_current >= o2::tpc::constants::MAXGLOBALPADROW) {
     return 0; // Short-circuit for negative rows
   } else {
     return (int)((GPUTPCGeometry::NPads(row_current) - GPUTPCGeometry::NPads(row_ref)) / 2);