cms-sw · cmsbuild · Mar 31, 2026 · Mar 5, 2026 · Mar 30, 2026 · Mar 31, 2026
diff --git a/DataFormats/BeamSpot/plugins/BuildFile.xml b/DataFormats/BeamSpot/plugins/BuildFile.xml
@@ -3,3 +3,10 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+
+<library file="alpaka/TrivialSerialisation.cc" name="DataFormatsBeamSpotTrivialSerialisationPortable">
+  <use name="DataFormats/BeamSpot"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/BeamSpot/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/BeamSpot/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,4 @@
+#include "DataFormats/BeamSpot/interface/alpaka/BeamSpotDevice.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(BeamSpotDevice);
diff --git a/DataFormats/EcalDigi/plugins/BuildFile.xml b/DataFormats/EcalDigi/plugins/BuildFile.xml
@@ -3,3 +3,10 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+
+<library file="alpaka/TrivialSerialisation.cc" name="DataFormatsEcalDigiTrivialSerialisationPortable">
+  <use name="DataFormats/EcalDigi"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/EcalDigi/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/EcalDigi/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,6 @@
+#include "DataFormats/EcalDigi/interface/alpaka/EcalDigiDeviceCollection.h"
+#include "DataFormats/EcalDigi/interface/alpaka/EcalDigiPhase2DeviceCollection.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(EcalDigiDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(EcalDigiPhase2DeviceCollection);
diff --git a/DataFormats/EcalRecHit/plugins/BuildFile.xml b/DataFormats/EcalRecHit/plugins/BuildFile.xml
@@ -3,3 +3,9 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+<library file="alpaka/TrivialSerialisation.cc" name="DataFormatsEcalRecHitTrivialSerialisationPortable">
+  <use name="DataFormats/EcalRecHit"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/EcalRecHit/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/EcalRecHit/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,6 @@
+#include "DataFormats/EcalRecHit/interface/alpaka/EcalRecHitDeviceCollection.h"
+#include "DataFormats/EcalRecHit/interface/alpaka/EcalUncalibratedRecHitDeviceCollection.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(EcalRecHitDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(EcalUncalibratedRecHitDeviceCollection);
diff --git a/DataFormats/HGCalDigi/plugins/BuildFile.xml b/DataFormats/HGCalDigi/plugins/BuildFile.xml
@@ -3,3 +3,10 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+
+<library file="alpaka/TrivialSerialisation.cc" name="DataFormatsHGCalDigiTrivialSerialisationPortable">
+  <use name="DataFormats/HGCalDigi"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/HGCalDigi/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/HGCalDigi/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,8 @@
+#include "DataFormats/HGCalDigi/interface/alpaka/HGCalDigiDevice.h"
+#include "DataFormats/HGCalDigi/interface/alpaka/HGCalECONDPacketInfoDevice.h"
+#include "DataFormats/HGCalDigi/interface/alpaka/HGCalFEDPacketInfoDevice.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(hgcaldigi::HGCalDigiDevice);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(hgcaldigi::HGCalECONDPacketInfoDevice);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(hgcaldigi::HGCalFEDPacketInfoDevice);
diff --git a/DataFormats/HGCalReco/plugins/BuildFile.xml b/DataFormats/HGCalReco/plugins/BuildFile.xml
@@ -3,3 +3,10 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+
+<library file="alpaka/TrivialSerialisation.cc" name="DataFormatsHGCalRecoTrivialSerialisationPortable">
+  <use name="DataFormats/HGCalReco"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/HGCalReco/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/HGCalReco/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,8 @@
+#include "DataFormats/HGCalReco/interface/alpaka/HGCalSoAClustersDeviceCollection.h"
+#include "DataFormats/HGCalReco/interface/alpaka/HGCalSoARecHitsExtraDeviceCollection.h"
+#include "DataFormats/HGCalReco/interface/alpaka/HGCalSoARecHitsDeviceCollection.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(HGCalSoAClustersDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(HGCalSoARecHitsExtraDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(HGCalSoARecHitsDeviceCollection);
diff --git a/DataFormats/HcalDigi/plugins/BuildFile.xml b/DataFormats/HcalDigi/plugins/BuildFile.xml
@@ -3,3 +3,10 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+
+<library file="alpaka/TrivialSerialisation.cc" name="DataFormatsHcalDigiTrivialSerialisationPortable">
+  <use name="DataFormats/HcalDigi"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/HcalDigi/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/HcalDigi/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,5 @@
+#include "DataFormats/HcalDigi/interface/alpaka/HcalDigiDeviceCollection.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(hcal::Phase0DigiDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(hcal::Phase1DigiDeviceCollection);
diff --git a/DataFormats/HcalRecHit/plugins/BuildFile.xml b/DataFormats/HcalRecHit/plugins/BuildFile.xml
@@ -3,3 +3,10 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+
+<library file="alpaka/TrivialSerialisation.cc" name="DataFormatsHcalRecHitTrivialSerialisationPortable">
+  <use name="DataFormats/HcalRecHit"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/HcalRecHit/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/HcalRecHit/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,4 @@
+#include "DataFormats/HcalRecHit/interface/alpaka/HcalRecHitDeviceCollection.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(hcal::RecHitDeviceCollection);
diff --git a/DataFormats/ParticleFlowReco/plugins/BuildFile.xml b/DataFormats/ParticleFlowReco/plugins/BuildFile.xml
@@ -3,3 +3,10 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+
+<library file="alpaka/TrivialSerialisation.cc" name="DataFormatsParticleFlowRecoTrivialSerialisationPortable">
+  <use name="DataFormats/ParticleFlowReco"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/ParticleFlowReco/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/ParticleFlowReco/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,13 @@
+// Include the Eigen core library before including the SoA definitions
+#include <Eigen/Core>
+
+#include "DataFormats/ParticleFlowReco/interface/alpaka/CaloRecHitDeviceCollection.h"
+#include "DataFormats/ParticleFlowReco/interface/alpaka/PFClusterDeviceCollection.h"
+#include "DataFormats/ParticleFlowReco/interface/alpaka/PFRecHitFractionDeviceCollection.h"
+#include "DataFormats/ParticleFlowReco/interface/alpaka/PFRecHitDeviceCollection.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(reco::CaloRecHitDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(reco::PFClusterDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(reco::PFRecHitFractionDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(reco::PFRecHitDeviceCollection);
diff --git a/DataFormats/Portable/interface/PortableDeviceCollection.h b/DataFormats/Portable/interface/PortableDeviceCollection.h
@@ -12,6 +12,7 @@
 
 #include "DataFormats/Common/interface/Uninitialized.h"
 #include "DataFormats/Portable/interface/PortableCollectionCommon.h"
+#include "DataFormats/TrivialSerialisation/interface/MemoryCopyTraits.h"
 #include "HeterogeneousCore/AlpakaInterface/interface/config.h"
 #include "HeterogeneousCore/AlpakaInterface/interface/memory.h"
 
@@ -146,4 +147,38 @@ class PortableDeviceCollection {
   View view_;                     //!
 };
 
+namespace ngt {
+
+  // Specialize MemoryCopyTraits for PortableDeviceCollection
+  template <typename T, typename TDev>
+  struct MemoryCopyTraits<PortableDeviceCollection<T, TDev>> {
+    using value_type = PortableDeviceCollection<T, TDev>;
+
+    // Properties are the collection size: T::size_type, or std::array<T::size_type, N> for SoABlocks.
+    using Properties = decltype(std::declval<value_type>()->metadata().size());
+
+    static Properties properties(value_type const& object) { return object->metadata().size(); }
+
+    template <typename TQueue>
+      requires(alpaka::isQueue<TQueue>)
+    static void initialize(TQueue& queue, value_type& object, Properties const& size) {
+      // Replace the default-constructed empty object with one where the buffer
+      // has been allocated in global device memory
+      object = value_type(queue, size);
+    }
+
+    static std::vector<std::span<std::byte>> regions(value_type& object) {
+      std::byte* address = reinterpret_cast<std::byte*>(object.buffer().data());
+      size_t size = alpaka::getExtentProduct(object.buffer());
+      return {{address, size}};
+    }
+
+    static std::vector<std::span<const std::byte>> regions(value_type const& object) {
+      const std::byte* address = reinterpret_cast<const std::byte*>(object.buffer().data());
+      size_t size = alpaka::getExtentProduct(object.buffer());
+      return {{address, size}};
+    }
+  };
+}  // namespace ngt
+
 #endif  // DataFormats_Portable_interface_PortableDeviceCollection_h
diff --git a/DataFormats/Portable/interface/PortableDeviceObject.h b/DataFormats/Portable/interface/PortableDeviceObject.h
@@ -8,6 +8,7 @@
 #include <alpaka/alpaka.hpp>
 
 #include "DataFormats/Common/interface/Uninitialized.h"
+#include "DataFormats/TrivialSerialisation/interface/MemoryCopyTraits.h"
 #include "HeterogeneousCore/AlpakaInterface/interface/config.h"
 #include "HeterogeneousCore/AlpakaInterface/interface/memory.h"
 
@@ -80,4 +81,28 @@ class PortableDeviceObject {
   std::optional<Buffer> buffer_;
 };
 
+namespace ngt {
+
+  // Specialize MemoryCopyTraits for PortableDeviceObject
+  template <typename TDev, typename T>
+  struct MemoryCopyTraits<PortableDeviceObject<TDev, T>> {
+    template <typename TQueue>
+      requires(alpaka::isQueue<TQueue>)
+    static void initialize(TQueue& queue, PortableDeviceObject<TDev, T>& object) {
+      // Replace the default-constructed empty object with one where the
+      // buffer has been allocated in global device memory
+      object = PortableDeviceObject<TDev, T>(queue);
+    }
+
+    static std::vector<std::span<std::byte>> regions(PortableDeviceObject<TDev, T>& object) {
+      return {{reinterpret_cast<std::byte*>(object.data()), sizeof(T)}};
+    }
+
+    static std::vector<std::span<const std::byte>> regions(PortableDeviceObject<TDev, T> const& object) {
+      return {{reinterpret_cast<std::byte const*>(object.data()), sizeof(T)}};
+    }
+  };
+
+}  // namespace ngt
+
 #endif  // DataFormats_Portable_interface_PortableDeviceObject_h
diff --git a/DataFormats/Portable/interface/PortableHostCollection.h b/DataFormats/Portable/interface/PortableHostCollection.h
@@ -200,8 +200,17 @@ namespace ngt {
     // The properties needed to initialize a new PrortableHostCollection are just its size.
     static Properties properties(value_type const& object) { return object->metadata().size(); }
 
-    // Replace the default-constructed empty object with one where the buffer has been allocated in pageable system memory.
+    template <typename TQueue>
+      requires(alpaka::isQueue<TQueue>)
+    static void initialize(TQueue& queue, value_type& object, Properties const& size) {
+      // Replace the default-constructed empty object with one where the buffer
+      // has been allocated in pinned host memory.
+      object = value_type(queue, size);
+    }
+
     static void initialize(value_type& object, Properties const& size) {
+      // Replace the default-constructed empty object with one where the buffer
+      // has been allocated in pageable host memory.
       object = value_type(cms::alpakatools::host(), size);
     }
 

diff --git a/DataFormats/Portable/interface/PortableHostObject.h b/DataFormats/Portable/interface/PortableHostObject.h
@@ -121,11 +121,21 @@ namespace ngt {
 
   template <typename T>
   struct MemoryCopyTraits<PortableHostObject<T>> {
-    // This specialisation requires a initialize() method, but does not need to pass any parameters to it.
+    // This specialisation requires an initialize() method, but does not need to
+    // pass any parameters to it.
     using Properties = void;
 
+    template <typename TQueue>
+      requires(alpaka::isQueue<TQueue>)
+    static void initialize(TQueue& queue, PortableHostObject<T>& object) {
+      // Replace the default-constructed empty object with one where the buffer
+      // has been allocated in pinned host memory
+      object = PortableHostObject<T>(queue);
+    }
+
     static void initialize(PortableHostObject<T>& object) {
-      // Replace the default-constructed empty object with one where the buffer has been allocated in pageable system memory.
+      // Replace the default-constructed empty object with one where the buffer
+      // has been allocated in pageable host memory.
       object = PortableHostObject<T>(cms::alpakatools::host());
     }
 

diff --git a/DataFormats/PortableTestObjects/plugins/BuildFile.xml b/DataFormats/PortableTestObjects/plugins/BuildFile.xml
@@ -3,3 +3,10 @@
   <use name="HeterogeneousCore/TrivialSerialisation"/>
   <flags EDM_PLUGIN="1"/>
 </library>
+
+<library file="alpaka/*.cc" name="DataFormatsPortableTestObjectsPluginsAlpaka">
+  <use name="DataFormats/PortableTestObjects"/>
+  <use name="HeterogeneousCore/TrivialSerialisation"/>
+  <flags ALPAKA_BACKENDS="1"/>
+  <flags EDM_PLUGIN="1"/>
+</library>
diff --git a/DataFormats/PortableTestObjects/plugins/alpaka/TrivialSerialisation.cc b/DataFormats/PortableTestObjects/plugins/alpaka/TrivialSerialisation.cc
@@ -0,0 +1,20 @@
+#include "DataFormats/PortableTestObjects/interface/alpaka/ImageDeviceCollection.h"
+#include "DataFormats/PortableTestObjects/interface/alpaka/LogitsDeviceCollection.h"
+#include "DataFormats/PortableTestObjects/interface/alpaka/MaskDeviceCollection.h"
+#include "DataFormats/PortableTestObjects/interface/alpaka/MultiHeadNetDeviceCollection.h"
+#include "DataFormats/PortableTestObjects/interface/alpaka/ParticleDeviceCollection.h"
+#include "DataFormats/PortableTestObjects/interface/alpaka/SimpleNetDeviceCollection.h"
+#include "DataFormats/PortableTestObjects/interface/alpaka/TestDeviceCollection.h"
+#include "DataFormats/PortableTestObjects/interface/alpaka/TestDeviceObject.h"
+#include "HeterogeneousCore/TrivialSerialisation/interface/alpaka/SerialiserFactoryDevice.h"
+
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::ImageDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::LogitsDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::MaskDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::MultiHeadNetDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::ParticleDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::SimpleNetDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::TestDeviceCollection);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::TestDeviceCollection2);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::TestDeviceCollection3);
+DEFINE_TRIVIAL_SERIALISER_PLUGIN_DEVICE(portabletest::TestDeviceObject);
diff --git a/DataFormats/SiPixelClusterSoA/interface/SiPixelClustersDevice.h b/DataFormats/SiPixelClusterSoA/interface/SiPixelClustersDevice.h
@@ -9,6 +9,7 @@
 #include "DataFormats/Portable/interface/PortableDeviceCollection.h"
 #include "DataFormats/SiPixelClusterSoA/interface/SiPixelClustersHost.h"
 #include "DataFormats/SiPixelClusterSoA/interface/SiPixelClustersSoA.h"
+#include "DataFormats/TrivialSerialisation/interface/MemoryCopyTraits.h"
 #include "HeterogeneousCore/AlpakaInterface/interface/CopyToHost.h"
 #include "HeterogeneousCore/AlpakaInterface/interface/config.h"
 
@@ -18,11 +19,11 @@ class SiPixelClustersDevice : public PortableDeviceCollection<TDev, SiPixelClust
   SiPixelClustersDevice(edm::Uninitialized) : PortableDeviceCollection<TDev, SiPixelClustersSoA>{edm::kUninitialized} {}
 
   template <typename TQueue>
-  explicit SiPixelClustersDevice(size_t maxModules, TQueue queue)
+  explicit SiPixelClustersDevice(TQueue queue, size_t maxModules)
       : PortableDeviceCollection<TDev, SiPixelClustersSoA>(queue, maxModules + 1) {}
 
   // Constructor which specifies the SoA size
-  explicit SiPixelClustersDevice(size_t maxModules, TDev const &device)
+  explicit SiPixelClustersDevice(TDev const& device, size_t maxModules)
       : PortableDeviceCollection<TDev, SiPixelClustersSoA>(device, maxModules + 1) {}
 
   void setNClusters(uint32_t nClusters, int32_t offsetBPIX2) {
@@ -38,4 +39,45 @@ class SiPixelClustersDevice : public PortableDeviceCollection<TDev, SiPixelClust
   int32_t offsetBPIX2_h = 0;
 };
 
+namespace ngt {
+
+  // Specialize MemoryCopyTraits for SiPixelClustersDevice
+  template <typename TDev>
+  struct MemoryCopyTraits<SiPixelClustersDevice<TDev>> {
+    using value_type = SiPixelClustersDevice<TDev>;
+
+    struct Properties {
+      int size;
+      uint32_t nClusters;
+      int32_t offsetBPIX2;
+    };
+
+    static Properties properties(value_type const& object) {
+      return {object->metadata().size() - 1, object.nClusters(), object.offsetBPIX2()};
+    }
+
+    template <typename TQueue>
+      requires(alpaka::isQueue<TQueue>)
+    static void initialize(TQueue& queue, value_type& object, Properties const& prop) {
+      // Replace the default-constructed empty object with one where the buffer
+      // has been allocated in device global memory.
+      object = value_type(queue, prop.size);
+      object.setNClusters(prop.nClusters, prop.offsetBPIX2);
+    }
+
+    static std::vector<std::span<std::byte>> regions(value_type& object) {
+      std::byte* address = reinterpret_cast<std::byte*>(object.buffer().data());
+      size_t size = alpaka::getExtentProduct(object.buffer());
+      return {{address, size}};
+    }
+
+    static std::vector<std::span<const std::byte>> regions(value_type const& object) {
+      const std::byte* address = reinterpret_cast<const std::byte*>(object.buffer().data());
+      size_t size = alpaka::getExtentProduct(object.buffer());
+      return {{address, size}};
+    }
+  };
+
+}  // namespace ngt
+
 #endif  // DataFormats_SiPixelClusterSoA_interface_SiPixelClustersDevice_h