algo: Add common device image for all GPU code.

algo/CMakeLists.txt

@@ -2,6 +2,7 @@ add_subdirectory(data)
 add_subdirectory(test)
 
 set(DEVICE_SRCS
+  base/gpu/DeviceImage.cxx
   detectors/sts/UnpackStsXpu.cxx
 )
 
@@ -28,6 +29,7 @@ add_library(Algo SHARED ${SRCS})
 
 target_include_directories(Algo
   PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}
+         ${CMAKE_CURRENT_SOURCE_DIR}/base
          ${CMAKE_CURRENT_SOURCE_DIR}/evbuild
          ${CMAKE_CURRENT_SOURCE_DIR}/trigger
          ${CMAKE_CURRENT_SOURCE_DIR}/evselector
@@ -43,6 +45,9 @@ target_compile_definitions(Algo PUBLIC NO_ROOT)
 xpu_attach(Algo ${DEVICE_SRCS})
 
 install(TARGETS Algo DESTINATION lib)
+install(DIRECTORY base/gpu TYPE INCLUDE
+  FILES_MATCHING PATTERN "*.h"
+)
 
 install(FILES ca/simd/CaSimd.h
   ca/simd/CaSimdVc.h

algo/base/gpu/DeviceImage.cxx

+/* Copyright (C) 2023 FIAS Frankfurt Institute for Advanced Studies, Frankfurt / Main
+   SPDX-License-Identifier: GPL-3.0-only
+   Authors: Felix Weiglhofer [committer] */
+#include "DeviceImage.h"
+
+XPU_IMAGE(cbm::algo::GPUReco);

algo/base/gpu/DeviceImage.h

+/* Copyright (C) 2023 FIAS Frankfurt Institute for Advanced Studies, Frankfurt / Main
+   SPDX-License-Identifier: GPL-3.0-only
+   Authors: Felix Weiglhofer [committer] */
+#ifndef CBM_ALGO_BASE_GPU_DEVICEIMAGE_H
+#define CBM_ALGO_BASE_GPU_DEVICEIMAGE_H
+#include <xpu/device.h>
+
+namespace cbm::algo
+{
+  struct GPUReco {
+  };
+}  // namespace cbm::algo
+
+#endif

algo/detectors/sts/UnpackStsXpu.cxx

@@ -15,8 +15,6 @@
 using std::unique_ptr;
 using std::vector;
 
-XPU_IMAGE(cbm::algo::UnpackStsXpu::StsXpuUnpack);  // Call exactly once per library
-
 XPU_BLOCK_SIZE_1D(cbm::algo::UnpackStsXpu::Unpack, 32);
 
 namespace cbm::algo

algo/detectors/sts/UnpackStsXpu.h

@@ -5,7 +5,6 @@
 #ifndef CBM_ALGO_UNPACKSTSXPU_H
 #define CBM_ALGO_UNPACKSTSXPU_H 1
 
-
 #include "CbmStsDigi.h"
 
 #include "MicrosliceDescriptor.hpp"
@@ -22,6 +21,7 @@
 
 #include "StsReadoutConfig.h"
 #include "StsXyterMessage.h"
+#include "gpu/DeviceImage.h"
 
 
 namespace cbm::algo
@@ -107,7 +107,7 @@ namespace cbm::algo
 
 
     // Run unpacker for each microslice
-    XPU_EXPORT_KERNEL(StsXpuUnpack, Unpack, UnpackStsXpuPar* params, UnpackStsXpuElinkPar* elinkParams,
+    XPU_EXPORT_KERNEL(GPUReco, Unpack, UnpackStsXpuPar* params, UnpackStsXpuElinkPar* elinkParams,
                       stsxyter::Message* content, uint64_t* msMessCount, uint64_t* msMessOffset, uint64_t* msStartTime,
                       uint32_t* msCompIdx, CbmStsDigi* digisOut, const uint64_t currentTsTime, int NElems);