cosma: added package at v2.0.2 (#15497)

* [new package] COSMA

* Use virtual dependencies

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

@@ -0,0 +1,69 @@
+# Copyright 2013-2020 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 import *
+
+
+class Cosma(CMakePackage):
+    """
+    Distributed Communication-Optimal Matrix-Matrix Multiplication Library
+    """
+
+    maintainers = ['teonnik', 'kabicm']
+    homepage = 'https://github.com/eth-cscs/COSMA'
+    url = 'https://github.com/eth-cscs/COSMA/releases/download/v2.0.2/cosma.tar.gz'
+    git = 'https://github.com/eth-cscs/COSMA.git'
+
+    # note: The default archives produced with github do not have the archives
+    #       of the submodules.
+    version('master', branch='master', submodules=True)
+    version('2.0.2', sha256='4f3354828bc718f3eef2f0098c3bdca3499297497a220da32db1acd57920c68d')
+    # note: this version fails to build at the moment
+    # version('1.0.0',
+    #         url='https://github.com/eth-cscs/COSMA/releases/download/1.0/cosma.tar.gz',
+    #         sha256='c142104258dcca4c17fa7faffc2990a08d2777235c7980006e93c5dca51061f6')
+
+    variant('cuda', default=False,
+            description='Build with the CUBLAS back end.')
+    variant('scalapack', default=False,
+            description='Build with ScaLAPACK support.')
+
+    depends_on('cmake@3.12:', type='build')
+    depends_on('mpi@3:')
+    depends_on('blas', when='~cuda')
+    depends_on('scalapack', when='+scalapack')
+    # COSMA is written entirely in C++, it may use cublasXt but a CUDA capable
+    # compiler is not needed. There is no need for CudaPackage in this recipe.
+    depends_on('cuda', when='+cuda')
+
+    def setup_build_environment(self, env):
+        if '+cuda' in self.spec:
+            env.set('CUDA_PATH', self.spec['cuda'].prefix)
+
+    def cmake_args(self):
+        spec = self.spec
+        args = ['-DCOSMA_WITH_TESTS=OFF',
+                '-DCOSMA_WITH_APPS=OFF',
+                '-DCOSMA_WITH_PROFILING=OFF',
+                '-DCOSMA_WITH_BENCHMARKS=OFF']
+
+        if '^mkl' in spec:
+            args += ['-DCOSMA_BLAS=MKL']
+        elif '^netlib-lapack' in spec:
+            args += ['-DCOSMA_BLAS=CUSTOM']
+        elif '^openblas' in spec:
+            args += ['-DCOSMA_BLAS=OPENBLAS']
+        elif '+cuda' in spec:
+            args += ['-DCOSMA_BLAS=CUDA']
+        else:  # TODO '^rocm' in spec:
+            args += ['-DCOSMA_BLAS=ROCM']
+
+        if '+scalapack' and '^mkl' in spec:
+            args += ['-DCOSMA_SCALAPACK=MKL']
+        elif '+scalapack' and '^netlib-scalapack' in spec:
+            args += ['-DCOSMA_SCALAPACK=CUSTOM']
+
+        return args