Add cuDSS support

core/solver/direct.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2017 - 2025 The Ginkgo authors
+// SPDX-FileCopyrightText: 2017 - 2026 The Ginkgo authors
 //
 // SPDX-License-Identifier: BSD-3-Clause
 

core/test/config/solver.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2017 - 2025 The Ginkgo authors
+// SPDX-FileCopyrightText: 2017 - 2026 The Ginkgo authors
 //
 // SPDX-License-Identifier: BSD-3-Clause
 

core/test/solver/direct.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2017 - 2024 The Ginkgo authors
+// SPDX-FileCopyrightText: 2017 - 2026 The Ginkgo authors
 //
 // SPDX-License-Identifier: BSD-3-Clause
 

cuda/base/types.hpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2017 - 2025 The Ginkgo authors
+// SPDX-FileCopyrightText: 2017 - 2026 The Ginkgo authors
 //
 // SPDX-License-Identifier: BSD-3-Clause
 
@@ -253,6 +253,7 @@ GKO_CUDA_DATA_TYPE(std::complex<gko::bfloat16>, CUDA_C_16BF);
 GKO_CUDA_DATA_TYPE(std::complex<float>, CUDA_C_32F);
 GKO_CUDA_DATA_TYPE(std::complex<double>, CUDA_C_64F);
 GKO_CUDA_DATA_TYPE(int32, CUDA_R_32I);
+GKO_CUDA_DATA_TYPE(int64, CUDA_R_64I);
 GKO_CUDA_DATA_TYPE(int8, CUDA_R_8I);
 
 #undef GKO_CUDA_DATA_TYPE

extensions/CMakeLists.txt

@@ -1,3 +1,8 @@
+if(GINKGO_BUILD_CUDA)
+    find_package(cudss 0.7.1 CONFIG)
+endif()
+
+add_subdirectory(cuda)
 if(GINKGO_BUILD_TESTS)
     add_subdirectory(test)
 endif()

extensions/cuda/CMakeLists.txt

@@ -0,0 +1,24 @@
+if(NOT GINKGO_BUILD_CUDA)
+    return()
+endif()
+
+if(NOT cudss_FOUND)
+    message(
+        STATUS
+        "cuDSS not found — gko::ext::cuda::solver::Cudss will not be built"
+    )
+    return()
+endif()
+
+message(STATUS "Building ginkgo_cudss extension")
+
+add_library(ginkgo_cudss solver/cudss.cpp)
+add_library(Ginkgo::ginkgo_cudss ALIAS ginkgo_cudss)
+
+target_link_libraries(ginkgo_cudss PUBLIC ginkgo)
+target_link_libraries(ginkgo_cudss PRIVATE cudss CUDA::cudart)
+
+# Use the standard Ginkgo include path setup (public headers)
+ginkgo_default_includes(ginkgo_cudss)
+
+ginkgo_install_library(ginkgo_cudss)