Add cuSPARSELt support (#1200)

* Add support for Linux site-packages

* Add support for Windows site-packages

* Add cusparselt to toolshed/conda_create_for_pathfinder_testing.* commands

* Add cusparseLt in supported_nvidia_headers.py

* Bump pathfinder version to 1.3.3a0

Author: rwgk

cuda_pathfinder/cuda/pathfinder/_dynamic_libs/supported_nvidia_libs.py

@@ -244,6 +244,7 @@
     "cufftMp": ("libcufftMp.so.12", "libcufftMp.so.11"),
     "mathdx": ("libmathdx.so.0",),
     "cudss": ("libcudss.so.0",),
+    "cusparseLt": ("libcusparseLt.so.0",),
     "cutensor": ("libcutensor.so.2",),
     "cutensorMg": ("libcutensorMg.so.2",),
     "nccl": ("libnccl.so.2",),
@@ -407,6 +408,7 @@
 SUPPORTED_WINDOWS_DLLS_OTHER = {
     "mathdx": ("mathdx64_0.dll",),
     "cudss": ("cudss64_0.dll",),
+    "cusparseLt": ("cusparseLt.dll",),
     "cutensor": ("cutensor.dll",),
     "cutensorMg": ("cutensorMg.dll",),
 }
@@ -454,6 +456,7 @@
     "cublasmp": ("nvidia/cublasmp/cu13/lib", "nvidia/cublasmp/cu12/lib"),
     "cudss": ("nvidia/cu13/lib", "nvidia/cu12/lib"),
     "cufftMp": ("nvidia/cufftmp/cu13/lib", "nvidia/cufftmp/cu12/lib"),
+    "cusparseLt": ("nvidia/cusparselt/lib",),
     "cutensor": ("cutensor/lib",),
     "cutensorMg": ("cutensor/lib",),
     "mathdx": ("nvidia/cu13/lib", "nvidia/cu12/lib"),
@@ -495,6 +498,7 @@
 SITE_PACKAGES_LIBDIRS_WINDOWS_OTHER = {
     "cudss": ("nvidia/cu13/bin", "nvidia/cu12/bin"),
     "mathdx": ("nvidia/cu13/bin/x86_64", "nvidia/cu12/bin"),
+    "cusparseLt": ("nvidia/cusparselt/bin",),
     "cutensor": ("cutensor/bin",),
     "cutensorMg": ("cutensor/bin",),
 }

cuda_pathfinder/cuda/pathfinder/_headers/supported_nvidia_headers.py

@@ -59,6 +59,7 @@
 }
 
 SUPPORTED_HEADERS_NON_CTK_COMMON = {
+    "cusparseLt": "cusparseLt.h",
     "cutensor": "cutensor.h",
 }
 SUPPORTED_HEADERS_NON_CTK_LINUX_ONLY = {
@@ -75,6 +76,7 @@
 )
 
 SUPPORTED_SITE_PACKAGE_HEADER_DIRS_NON_CTK = {
+    "cusparseLt": ("nvidia/cusparselt/include",),
     "cutensor": ("cutensor/include",),
     "nvshmem": ("nvidia/nvshmem/include",),
 }

cuda_pathfinder/cuda/pathfinder/_version.py

@@ -1,4 +1,4 @@
 # SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-__version__ = "1.3.2"
+__version__ = "1.3.3a0"

cuda_pathfinder/pyproject.toml

@@ -22,6 +22,7 @@ cu12 = [
     "nvidia-cublasmp-cu12; sys_platform != 'win32'",
     "nvidia-cudss-cu12",
     "nvidia-cufftmp-cu12; sys_platform != 'win32'",
+    "nvidia-cusparselt-cu12",
     "nvidia-libmathdx-cu12",
     "nvidia-nccl-cu12; sys_platform != 'win32'",
     "nvidia-nvshmem-cu12; sys_platform != 'win32'",
@@ -32,6 +33,7 @@ cu13 = [
     "cutensor-cu13",
     "nvidia-cublasmp-cu13; sys_platform != 'win32'",
     "nvidia-cudss-cu13",
+    "nvidia-cusparselt-cu13",
     "nvidia-nccl-cu13; sys_platform != 'win32'",
     "nvidia-nvshmem-cu13; sys_platform != 'win32'",
 ]

cuda_pathfinder/tests/test_find_nvidia_headers.py

@@ -33,6 +33,7 @@
 assert STRICTNESS in ("see_what_works", "all_must_work")
 
 NON_CTK_IMPORTLIB_METADATA_DISTRIBUTIONS_NAMES = {
+    "cusparseLt": r"^nvidia-cusparselt-.*$",
     "cutensor": r"^cutensor-.*$",
     "nvshmem": r"^nvidia-nvshmem-.*$",
 }

toolshed/conda_create_for_pathfinder_testing.ps1

@@ -14,6 +14,7 @@ conda create --yes -n "pathfinder_testing_cu$CudaVersion" python=3.13 "cuda-tool
 conda activate "pathfinder_testing_cu$CudaVersion"
 
 $cpkgs = @(
+    "cusparselt-dev",
     "cutensor",
     "libcublasmp-dev",
     "libcudss-dev",

toolshed/conda_create_for_pathfinder_testing.sh

@@ -14,6 +14,7 @@ conda create --yes -n "pathfinder_testing_cu$1" python=3.13 cuda-toolkit="$1"
 conda activate "pathfinder_testing_cu$1"
 
 for cpkg in \
+    cusparselt-dev \
     cutensor \
     libcublasmp-dev \
     libcudss-dev \