cutlass: new package (#31379)

* cutlass: new package

* cutlass: fix ci

* cutlass: remove `join_path`

Co-authored-by: Tamara Dahlgren <35777542+tldahlgren@users.noreply.github.com>

* cutlass: adding a message for cuda_arch

Co-authored-by: Tamara Dahlgren <35777542+tldahlgren@users.noreply.github.com>

* cutlass: simplify cmake_args

Co-authored-by: Tamara Dahlgren <35777542+tldahlgren@users.noreply.github.com>

* cutlass: fix cmake_args

Co-authored-by: Tamara Dahlgren <35777542+tldahlgren@users.noreply.github.com>

var/spack/repos/builtin/packages/cutlass/package.py

@@ -0,0 +1,32 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class Cutlass(CMakePackage, CudaPackage):
+    """CUDA Templates for Linear Algebra Subroutines"""
+
+    homepage = "https://github.com/NVIDIA/cutlass"
+    git = homepage + ".git"
+    url = "https://github.com/NVIDIA/cutlass/archive/refs/tags/v2.9.0.tar.gz"
+
+    version('master', branch='master')
+    version(
+        '2.9.1', sha256="2d6474576c08ee21d7f4f3a10fd1a47234fd9fd638efc8a2e0e64bb367f09bc1")
+    version(
+        '2.9.0', sha256="ccca4685739a3185e3e518682845314b07a5d4e16d898b10a3c3a490fd742fb4")
+    variant('cuda', default=True, description='Build with CUDA')
+    conflicts('~cuda', msg='Cutlass requires CUDA')
+    conflicts('cuda_arch=none',
+              msg='Must specify CUDA compute capabilities of your GPU, see '
+              'https://developer.nvidia.com/cuda-gpus')
+
+    def setup_build_environment(self, env):
+        env.set('CUDACXX', self.spec["cuda"].prefix.bin.nvcc)
+
+    def cmake_args(self):
+        cuda_arch = self.spec.variants['cuda_arch'].value
+        return [self.define("CUTLASS_NVCC_ARCHS", ";".join(cuda_arch))]