added attributes into dataman

source/adios2/engine/dataman/DataManReader.cpp

@@ -100,7 +100,16 @@ StepStatus DataManReader::BeginStep(StepMode stepMode,
                 "[DataManReader::BeginStep] Step mode is not supported!"));
         }
 
-        vars = m_MetaDataMap[m_CurrentStep];
+        auto currentStepIt = m_MetaDataMap.find(m_CurrentStep);
+        if (currentStepIt != m_MetaDataMap.end())
+        {
+            vars = currentStepIt->second;
+        }
+    }
+
+    if (m_CurrentStep == 0)
+    {
+        m_DataManDeserializer.GetAttributes(m_IO);
     }
 
     for (const auto &i : *vars)

source/adios2/engine/dataman/DataManWriter.cpp

@@ -62,6 +62,10 @@ void DataManWriter::EndStep()
     {
         for (size_t i = 0; i < m_TransportChannels; ++i)
         {
+            if (m_CurrentStep == 0)
+            {
+                m_DataManSerializer[i]->PutAttributes(m_IO, m_MPIRank);
+            }
             const std::shared_ptr<std::vector<char>> buf =
                 m_DataManSerializer[i]->Get();
             m_BufferSize = buf->size() * 2;

source/adios2/toolkit/format/dataman/DataManDeserializer.cpp

@@ -60,6 +60,18 @@ int DataManDeserializer::Put(
 
     for (auto stepMapIt = metaJ.begin(); stepMapIt != metaJ.end(); ++stepMapIt)
     {
+        if (stepMapIt.key() == "G" || stepMapIt.key() == "A")
+        {
+            for (const auto &rankVec : stepMapIt.value())
+            {
+                for (const auto &gVar : rankVec)
+                {
+                    m_GlobalVars[gVar["N"].get<std::string>()] = gVar;
+                }
+            }
+            continue;
+        }
+
         for (auto rankMapIt = stepMapIt.value().begin();
              rankMapIt != stepMapIt.value().end(); ++rankMapIt)
         {
@@ -69,10 +81,10 @@ int DataManDeserializer::Put(
                 try
                 {
                     // compulsory properties
+                    var.step = stoull(stepMapIt.key());
                     var.name = varBlock["N"].get<std::string>();
                     var.start = varBlock["O"].get<Dims>();
                     var.count = varBlock["C"].get<Dims>();
-                    var.step = varBlock["T"].get<size_t>();
                     var.size = varBlock["I"].get<size_t>();
 
                     // optional properties
@@ -246,5 +258,33 @@ bool DataManDeserializer::HasOverlap(Dims in_start, Dims in_count,
     return true;
 }
 
+void DataManDeserializer::GetAttributes(core::IO &io)
+{
+    std::lock_guard<std::mutex> l(m_Mutex);
+    for (const auto &j : m_GlobalVars)
+    {
+        const std::string type(j["Y"].get<std::string>());
+        if (type == "unknown")
+        {
+        }
+#define declare_type(T)                                                        \
+    else if (type == helper::GetType<T>())                                     \
+    {                                                                          \
+        if (j["V"].get<bool>())                                                \
+        {                                                                      \
+            io.DefineAttribute<T>(j["N"].get<std::string>(), j["G"].get<T>()); \
+        }                                                                      \
+        else                                                                   \
+        {                                                                      \
+            io.DefineAttribute<T>(j["N"].get<std::string>(),                   \
+                                  j["G"].get<std::vector<T>>().data(),         \
+                                  j["G"].get<std::vector<T>>().size());        \
+        }                                                                      \
+    }
+        ADIOS2_FOREACH_ATTRIBUTE_TYPE_1ARG(declare_type)
+#undef declare_type
+    }
+}
+
 } // namespace format
 } // namespace adios2

source/adios2/toolkit/format/dataman/DataManDeserializer.h

@@ -14,6 +14,7 @@
 #include <nlohmann/json.hpp>
 
 #include "adios2/ADIOSTypes.h"
+#include "adios2/core/IO.h"
 #include "adios2/core/Variable.h"
 
 #include <mutex>
@@ -56,6 +57,7 @@ class DataManDeserializer
     GetMetaData(const size_t step);
     const std::unordered_map<size_t, std::shared_ptr<std::vector<DataManVar>>>
     GetMetaData();
+    void GetAttributes(core::IO &io);
 
 private:
     bool HasOverlap(Dims in_start, Dims in_count, Dims out_start,
@@ -69,6 +71,7 @@ class DataManDeserializer
     size_t m_MinStep = std::numeric_limits<size_t>::max();
     bool m_IsRowMajor;
     bool m_IsLittleEndian;
+    nlohmann::json m_GlobalVars;
 
     std::mutex m_Mutex;
 };

source/adios2/toolkit/format/dataman/DataManSerializer.cpp

@@ -39,7 +39,7 @@ void DataManSerializer::New(size_t size)
 
 const std::shared_ptr<std::vector<char>> DataManSerializer::Get()
 {
-    std::vector<uint8_t> metacbor = nlohmann::json::to_msgpack(m_Metadata);
+    std::vector<uint8_t> metacbor(nlohmann::json::to_msgpack(m_Metadata));
     size_t metasize = metacbor.size();
     m_Buffer->resize(m_Position + metasize);
     (reinterpret_cast<uint64_t *>(m_Buffer->data()))[0] = m_Position;
@@ -97,5 +97,26 @@ bool DataManSerializer::IsCompressionAvailable(const std::string &method,
     return false;
 }
 
+void DataManSerializer::PutAttributes(core::IO &io, const int rank)
+{
+    const auto attributesDataMap = io.GetAttributesDataMap();
+    for (const auto &attributePair : attributesDataMap)
+    {
+        const std::string name(attributePair.first);
+        const std::string type(attributePair.second.first);
+        if (type == "unknown")
+        {
+        }
+#define declare_type(T)                                                        \
+    else if (type == helper::GetType<T>())                                     \
+    {                                                                          \
+        core::Attribute<T> &attribute = *io.InquireAttribute<T>(name);         \
+        PutAttribute(attribute, rank);                                         \
+    }
+        ADIOS2_FOREACH_ATTRIBUTE_TYPE_1ARG(declare_type)
+#undef declare_type
+    }
+}
+
 } // namespace format
 } // namespace adios2

source/adios2/toolkit/format/dataman/DataManSerializer.h

@@ -14,6 +14,7 @@
 #include <nlohmann/json.hpp>
 
 #include "adios2/ADIOSTypes.h"
+#include "adios2/core/IO.h"
 #include "adios2/core/Variable.h"
 
 #include <mutex>
@@ -23,13 +24,15 @@
 // C - Count
 // D - Data Object ID or File Name
 // E - Endian
+// G - Global Value
 // H - Meatadata Hash
 // I - Data Size
 // M - Major
 // N - Variable Name
 // O - Start
 // P - Position of Memory Block
 // S - Shape
+// V - Is Single Value
 // X - Index (Used only in deserializer)
 // Y - Data Type
 // Z - Compression Method
@@ -44,39 +47,53 @@ class DataManSerializer
 {
 public:
     DataManSerializer(bool isRowMajor, bool isLittleEndian);
+
     void New(size_t size);
+
     template <class T>
     void Put(const T *inputData, const std::string &varName,
              const Dims &varShape, const Dims &varStart, const Dims &varCount,
              const std::string &doid, const size_t step, const int rank,
-             std::string address, const Params &params);
+             const std::string &address, const Params &params);
+
     template <class T>
     void Put(const core::Variable<T> &variable, const std::string &doid,
-             const size_t step, const int rank, std::string address,
+             const size_t step, const int rank, const std::string &address,
              const Params &params);
+
+    void PutAttributes(core::IO &io, const int rank);
+
     const std::shared_ptr<std::vector<char>> Get();
+
     float GetMetaRatio();
+
     static std::shared_ptr<std::vector<char>> EndSignal(size_t step);
 
 private:
-    std::shared_ptr<std::vector<char>> m_Buffer;
-    nlohmann::json m_Metadata;
-    std::vector<char> m_CompressBuffer;
-    size_t m_Position = 0;
-    bool m_IsRowMajor;
-    bool m_IsLittleEndian;
     template <class T>
     bool Zfp(nlohmann::json &metaj, size_t &datasize, const T *inputData,
              const Dims &varCount, const Params &params);
+
     template <class T>
     bool Sz(nlohmann::json &metaj, size_t &datasize, const T *inputData,
             const Dims &varCount, const Params &params);
+
     template <class T>
     bool BZip2(nlohmann::json &metaj, size_t &datasize, const T *inputData,
                const Dims &varCount, const Params &params);
 
+    template <class T>
+    void PutAttribute(const core::Attribute<T> &attribute, const int rank);
+
     bool IsCompressionAvailable(const std::string &method,
                                 const std::string &type, const Dims &count);
+
+    std::shared_ptr<std::vector<char>> m_Buffer;
+    nlohmann::json m_Metadata;
+    std::vector<char> m_CompressBuffer;
+    size_t m_Position = 0;
+    bool m_IsRowMajor;
+    bool m_IsLittleEndian;
 };
 
 } // end namespace format

source/adios2/toolkit/format/dataman/DataManSerializer.tcc

@@ -35,7 +35,7 @@ namespace format
 template <class T>
 void DataManSerializer::Put(const core::Variable<T> &variable,
                             const std::string &doid, const size_t step,
-                            const int rank, std::string address,
+                            const int rank, const std::string &address,
                             const Params &params)
 {
     Put(variable.GetData(), variable.m_Name, variable.m_Shape, variable.m_Start,
@@ -47,7 +47,7 @@ void DataManSerializer::Put(const T *inputData, const std::string &varName,
                             const Dims &varShape, const Dims &varStart,
                             const Dims &varCount, const std::string &doid,
                             const size_t step, const int rank,
-                            std::string address, const Params &params)
+                            const std::string &address, const Params &params)
 {
 
     nlohmann::json metaj;
@@ -56,7 +56,6 @@ void DataManSerializer::Put(const T *inputData, const std::string &varName,
     metaj["O"] = varStart;
     metaj["C"] = varCount;
     metaj["S"] = varShape;
-    metaj["T"] = step;
     metaj["D"] = doid;
     metaj["M"] = m_IsRowMajor;
     metaj["E"] = m_IsLittleEndian;
@@ -126,7 +125,7 @@ void DataManSerializer::Put(const T *inputData, const std::string &varName,
 
     if (m_Buffer->capacity() < m_Position + datasize)
     {
-        m_Buffer->reserve(m_Buffer->capacity() * 2);
+        m_Buffer->reserve((m_Position + datasize) * 2);
     }
 
     m_Buffer->resize(m_Position + datasize);
@@ -142,7 +141,7 @@ void DataManSerializer::Put(const T *inputData, const std::string &varName,
     }
     m_Position += datasize;
 
-    m_Metadata[std::to_string(step)][std::to_string(rank)].push_back(metaj);
+    m_Metadata[std::to_string(step)][std::to_string(rank)].emplace_back(metaj);
 }
 
 template <class T>
@@ -263,6 +262,25 @@ bool DataManSerializer::BZip2(nlohmann::json &metaj, size_t &datasize,
     return false;
 }
 
+template <class T>
+void DataManSerializer::PutAttribute(const core::Attribute<T> &attribute,
+                                     const int rank)
+{
+    m_Metadata["A"][std::to_string(rank)].emplace_back();
+    auto &j = m_Metadata["A"][std::to_string(rank)].back();
+    j["N"] = attribute.m_Name;
+    j["Y"] = attribute.m_Type;
+    j["V"] = attribute.m_IsSingleValue;
+    if (attribute.m_IsSingleValue)
+    {
+        j["G"] = attribute.m_DataSingleValue;
+    }
+    else
+    {
+        j["G"] = attribute.m_DataArray;
+    }
+}
+
 } // namespace format
 } // namespace adios2
 

testing/adios2/engine/dataman/TestDataMan.h

@@ -240,6 +240,7 @@ void DataManWriter(const Dims &shape, const Dims &start, const Dims &count,
         "bpComplexes", shape, start, count);
     auto bpDComplexes = dataManIO.DefineVariable<std::complex<double>>(
         "bpDComplexes", shape, start, count);
+    dataManIO.DefineAttribute<int>("AttInt", 110);
     adios2::Engine dataManWriter =
         dataManIO.Open("stream", adios2::Mode::Write);
     for (int i = 0; i < steps; ++i)
@@ -383,6 +384,9 @@ void DataManReaderP2P(const Dims &shape, const Dims &start, const Dims &count,
             break;
         }
     }
+    auto attInt = dataManIO.InquireAttribute<int>("AttInt");
+    ASSERT_EQ(110, attInt.Data()[0]);
+    ASSERT_NE(111, attInt.Data()[0]);
     ASSERT_EQ(i, steps);
     dataManReader.Close();
     print_lines = 0;