diff --git a/GPU/GPUTracking/Base/GPUReconstruction.cxx b/GPU/GPUTracking/Base/GPUReconstruction.cxx
index 6ce07f67c3645..a7e0c2cb827f1 100644
--- a/GPU/GPUTracking/Base/GPUReconstruction.cxx
+++ b/GPU/GPUTracking/Base/GPUReconstruction.cxx
@@ -568,7 +568,7 @@ size_t GPUReconstruction::AllocateRegisteredMemoryHelper(GPUMemoryResource* res,
     memorypool = (void*)((char*)memorypool + GPUProcessor::getAlignment<GPUCA_MEMALIGN>(memorypool));
   }
   if (memorypoolend ? (memorypool > memorypoolend) : ((size_t)ptrDiff(memorypool, memorybase) > memorysize)) {
-    std::cerr << "Memory pool size exceeded (" << device << ") (" << res->mName << ": " << (memorypoolend ? (memorysize + ptrDiff(memorypool, memorypoolend)) : ptrDiff(memorypool, memorybase)) << " < " << memorysize << "\n";
+    std::cerr << "Memory pool size exceeded (" << device << ") (" << res->mName << ": " << (memorypoolend ? (memorysize + ptrDiff(memorypool, memorypoolend)) : ptrDiff(memorypool, memorybase)) << " > " << memorysize << "\n";
     throw std::bad_alloc();
   }
   if (mProcessingSettings.allocDebugLevel >= 2) {
diff --git a/GPU/GPUTracking/Base/GPUReconstructionProcessing.cxx b/GPU/GPUTracking/Base/GPUReconstructionProcessing.cxx
index 51da17fe58628..51c48ebbfc0b2 100644
--- a/GPU/GPUTracking/Base/GPUReconstructionProcessing.cxx
+++ b/GPU/GPUTracking/Base/GPUReconstructionProcessing.cxx
@@ -51,7 +51,9 @@ void GPUReconstructionProcessing::runParallelOuterLoop(bool doGPU, uint32_t nThr
       tbb::parallel_for<uint32_t>(0, nThreads, lambda, tbb::simple_partitioner());
     });
   } else {
-    lambda(0);
+    for (uint32_t i = 0; i < nThreads; i++) {
+      lambda(i);
+    }
   }
 }
 
diff --git a/GPU/GPUTracking/Standalone/Benchmark/standalone.cxx b/GPU/GPUTracking/Standalone/Benchmark/standalone.cxx
index 58866224943c0..682e6913d58d4 100644
--- a/GPU/GPUTracking/Standalone/Benchmark/standalone.cxx
+++ b/GPU/GPUTracking/Standalone/Benchmark/standalone.cxx
@@ -223,6 +223,10 @@ int32_t ReadConfiguration(int argc, char** argv)
     }
   }
   if (configStandalone.setO2Settings) {
+    if (!(configStandalone.inputcontrolmem && configStandalone.outputcontrolmem)) {
+      printf("setO2Settings requires the usage of --inputMemory and --outputMemory as in O2\n");
+      return 1;
+    }
     if (configStandalone.runGPU) {
       configStandalone.proc.forceHostMemoryPoolSize = 1024 * 1024 * 1024;
     }