diff --git a/source/adios2/toolkit/format/bp5/BP5Helper.cpp b/source/adios2/toolkit/format/bp5/BP5Helper.cpp
index fc550069a0..a15aed597c 100644
--- a/source/adios2/toolkit/format/bp5/BP5Helper.cpp
+++ b/source/adios2/toolkit/format/bp5/BP5Helper.cpp
@@ -386,11 +386,14 @@ void BP5Helper::BP5AggregateInformation(helper::Comm &mpiComm,
     // Incoming, we expect a single Attribute Encode buffer, get its hash
     BP5Helper::digest attrHash;
     size_t attrLen = 0;
+    std::cout << "Agg info a " << AttributeEncodeBuffers.size() << std::endl;
     if (AttributeEncodeBuffers.size() > 0)
     {
+        std::cout << "Agg info b" << std::endl;
         size_t AlignedSize = ((AttributeEncodeBuffers[0].iov_len + 7) & ~0x7);
         attrLen = AlignedSize;
     }
+    std::cout << "Agg info c " << attrLen << std::endl;
     if ((attrLen > 0) && AttributeEncodeBuffers[0].iov_base)
         attrHash = HashOfBlock(AttributeEncodeBuffers[0].iov_base, attrLen);
     std::vector<char> RecvBuffer;
@@ -399,8 +402,10 @@ void BP5Helper::BP5AggregateInformation(helper::Comm &mpiComm,
     std::vector<size_t> AttrSize;
     std::vector<size_t> MMBSizes;
     std::vector<digest> MMBIDs;
+    std::cout << "Agg info d " << attrLen << std::endl;
     auto myFixedContrib = BuildFixedNodeContrib(attrHash, attrLen, NewMetaMetaBlocks,
                                                 MetaEncodeSize[0], WriterDataPositions);
+    std::cout << "Agg info e " << attrLen << std::endl;
     bool NeedDynamic = false;
 
     if (mpiComm.Rank() == 0)