GBTS node creation handling of unconfigured volumes (#1284)

mimodekjaer · stephenswat · web-flow · commit 7b0be075831e · 2026-04-24T11:20:26.000Z
This is a bugfix for the GBTS node creation so the spacepoints from
unconfigured volumes are fully skipped.

Co-authored-by: Stephen Nicholas Swatman &lt;stephen.nicholas.swatman@cern.ch&gt;
diff --git a/device/cuda/src/gbts_seeding/kernels/GbtsNodesMakingKernels.cuh b/device/cuda/src/gbts_seeding/kernels/GbtsNodesMakingKernels.cuh
@@ -49,10 +49,12 @@ __global__ void count_sp_by_layer(
 
         // some volume_ids map one to one with layer others need searching
         if (geo_id.volume() > volumeMapSize) {
+            reducedSP[spIdx].w = -CHAR_MAX - 1;
             continue;  // unconfigured volume
         }
         short begin_or_bin = volumeToLayerMap[geo_id.volume()];
         if (begin_or_bin == SHRT_MAX) {
+            reducedSP[spIdx].w = -CHAR_MAX - 1;
             continue;  // unconfigured volume
         }
         unsigned int layerIdx;

Original file line number	Diff line number	Diff line change
`@@ -49,10 +49,12 @@ __global__ void count_sp_by_layer(`
`49`	`49`
`50`	`50`	`// some volume_ids map one to one with layer others need searching`
`51`	`51`	`if (geo_id.volume() > volumeMapSize) {`
	`52`	`+ reducedSP[spIdx].w = -CHAR_MAX - 1;`
`52`	`53`	`continue; // unconfigured volume`
`53`	`54`	`}`
`54`	`55`	`short begin_or_bin = volumeToLayerMap[geo_id.volume()];`
`55`	`56`	`if (begin_or_bin == SHRT_MAX) {`
	`57`	`+ reducedSP[spIdx].w = -CHAR_MAX - 1;`
`56`	`58`	`continue; // unconfigured volume`
`57`	`59`	`}`
`58`	`60`	`unsigned int layerIdx;`