From d5be1e7f5bc2a1339773d9d9e8e135f888e96e2a Mon Sep 17 00:00:00 2001
From: Diego Stocco <diego.stocco@cern.ch>
Date: Sat, 22 Nov 2025 11:39:48 +0100
Subject: [PATCH] Set proper EOR to anchored MC GRPECS

---
 macro/o2sim.C | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/macro/o2sim.C b/macro/o2sim.C
index 7d5faa544249c..fd44de6e93b54 100644
--- a/macro/o2sim.C
+++ b/macro/o2sim.C
@@ -69,6 +69,7 @@ FairRunSim* o2sim_init(bool asservice, bool evalmat = false)
   auto& ccdbmgr = o2::ccdb::BasicCCDBManager::instance();
   // fix the timestamp early
   uint64_t timestamp = confref.getTimestamp();
+  uint64_t runEnd = timestamp + 3600000;
   // see if we have a run number but not a timestamp
   auto run_number = confref.getRunNumber();
   if (run_number != -1) {
@@ -77,6 +78,7 @@ FairRunSim* o2sim_init(bool asservice, bool evalmat = false)
       auto [sor, eor] = ccdbmgr.getRunDuration(run_number);
       LOG(info) << "Have run number. Fixing timestamp to " << sor;
       timestamp = sor;
+      runEnd = eor;
     }
   }
 
@@ -189,7 +191,7 @@ FairRunSim* o2sim_init(bool asservice, bool evalmat = false)
     }
     uint64_t runStart = timestamp;
     grp.setTimeStart(runStart);
-    grp.setTimeEnd(runStart + 3600000);
+    grp.setTimeEnd(runEnd);
     grp.setDetsReadOut(readoutDetMask);
     // CTP is not a physical detector, just flag in the GRP if requested
     if (isReadout("CTP")) {
@@ -216,7 +218,7 @@ FairRunSim* o2sim_init(bool asservice, bool evalmat = false)
     o2::parameters::GRPECSObject grp;
     grp.setRun(run->GetRunId());
     grp.setTimeStart(runStart);
-    grp.setTimeEnd(runStart + 3600000);
+    grp.setTimeEnd(runEnd);
     grp.setNHBFPerTF(128); // might be overridden later
     grp.setDetsReadOut(readoutDetMask);
     if (isReadout("CTP")) {