diff --git a/include/user/spMcRingBuffer.h b/include/user/spMcRingBuffer.h
index 2a3258a..d4bb6d5 100644
--- a/include/user/spMcRingBuffer.h
+++ b/include/user/spMcRingBuffer.h
@@ -61,7 +61,7 @@ public:
 		{
 			slots[i].~StimulusFrame();  // Destroy default-constructed object
 			new (&slots[i]) StimulusFrame(
-				frameAssemblyDesc->slots[i], callbacks, flags);
+				frameAssemblyDesc->slots[i], callbacks, flags, i);
 		}
 	}
 
diff --git a/include/user/stimulusFrame.h b/include/user/stimulusFrame.h
index b8df377..aed590f 100644
--- a/include/user/stimulusFrame.h
+++ b/include/user/stimulusFrame.h
@@ -77,8 +77,10 @@ public:
 	StimulusFrame(
 		const FrameAssemblyDesc::SlotDesc& slotDesc_,
 		const SmoCallbacks& callbacks,
-		cl_mem_flags flags)
-	: slotDesc(slotDesc_)
+		cl_mem_flags flags,
+		size_t ringBufferIndex_)
+	: slotDesc(slotDesc_),
+	ringBufferIndex(ringBufferIndex_)
 	{
 		if (!callbacks.ComputeManager_createUseHostPtrBuffer)
 		{
@@ -112,6 +114,7 @@ public:
 	SimultaneityStamp simultaneityStamp;
 	FrameAssemblyDesc::SlotDesc slotDesc;
 	std::shared_ptr<smo::compute::ClBuffer> clBuffer;
+	size_t ringBufferIndex;
 };
 
 } // namespace stim_buff
diff --git a/stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp b/stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp
index 486cd08..65e28a7 100644
--- a/stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp
+++ b/stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp
@@ -1015,7 +1015,9 @@ public:
 			}
 		}
 
-		std::cout << __func__ << ": pointsPerDgram=" << pointsPerDgram
+		std::cout << __func__ << ": ringBufferIndex="
+			<< context->intensityStimFrame->get().ringBufferIndex
+			<< ", pointsPerDgram=" << pointsPerDgram
 			<< ", nSucceeded=" << nSucceeded
 			<< ", totalPoints=" << totalPoints
 			<< ", highIntensityCount=" << highIntensityCount << std::endl;
diff --git a/stimBuffApis/livoxGen1/pcloudStimulusProducer.cpp b/stimBuffApis/livoxGen1/pcloudStimulusProducer.cpp
index 625507d..5e90db8 100644
--- a/stimBuffApis/livoxGen1/pcloudStimulusProducer.cpp
+++ b/stimBuffApis/livoxGen1/pcloudStimulusProducer.cpp
@@ -3,6 +3,7 @@
 #include <algorithm>
 #include <unistd.h>
 #include <iomanip>
+#include <cstddef>
 #include <user/spMcRingBuffer.h>
 #include <componentThread.h>
 #include <asynchronousLoop.h>
@@ -88,7 +89,7 @@ tempStimulusFrame(
 		0,
 		reinterpret_cast<uint8_t*>(&tempStimulusFrameMem),
 		sizeof(tempStimulusFrameMem)},
-	*smoHooksPtr, 0)
+	*smoHooksPtr, 0, SIZE_MAX)
 {
 	if (smoHooksPtr->OptionParser_getOptions().verbose)
 	{