Add aws-ofi-nccl library (#32906)

* Added a package for the aws-ofi-nccl plug-in from to enable NCCL to
use libfabric communication library as a network provider.

Co-authored-by: Harmen Stoppels <harmenstoppels@gmail.com>

var/spack/repos/builtin/packages/aws-ofi-nccl/package.py

@@ -0,0 +1,61 @@
+# 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 AwsOfiNccl(AutotoolsPackage):
+    """AWS OFI NCCL is a plug-in which enables EC2 developers to use
+    libfabric as a network provider while running NVIDIA's NCCL based
+    applications."""
+
+    homepage = "https://github.com/aws/aws-ofi-nccl"
+    git = "https://github.com/aws/aws-ofi-nccl.git"
+    url = "https://github.com/aws/aws-ofi-nccl.git"
+
+    maintainers = ["bvanessen"]
+
+    version("master", branch="master", default=True)
+
+    variant("trace", default=False, description="Enable printing trace messages")
+    variant("tests", default=False, description="Build tests")
+
+    depends_on("libfabric")
+    depends_on("cuda")
+    depends_on("nccl")
+    depends_on("mpi")
+    depends_on("autoconf", type="build")
+    depends_on("automake", type="build")
+    depends_on("libtool", type="build")
+
+    # To enable this plug-in to work with NCCL add it to the LD_LIBRARY_PATH
+    def setup_run_environment(self, env):
+        aws_ofi_nccl_home = self.spec.prefix
+        env.append_path("LD_LIBRARY_PATH", aws_ofi_nccl_home.lib)
+
+    # To enable this plug-in to work with NCCL add it to the LD_LIBRARY_PATH
+    def setup_dependent_run_environment(self, env, dependent_spec):
+        aws_ofi_nccl_home = self.spec["aws-ofi-nccl"].prefix
+        env.append_path("LD_LIBRARY_PATH", aws_ofi_nccl_home.lib)
+
+    def configure_args(self):
+        spec = self.spec
+        args = []
+
+        # Always set configure's external paths to use the Spack
+        # provided dependencies
+        args.extend(
+            [
+                "--with-libfabric={0}".format(spec["libfabric"].prefix),
+                "--with-cuda={0}".format(spec["cuda"].prefix),
+                "--with-nccl={0}".format(spec["nccl"].prefix),
+                "--with-mpi={0}".format(spec["mpi"].prefix),
+            ]
+        )
+
+        args.extend(self.enable_or_disable("trace"))
+        args.extend(self.enable_or_disable("tests"))
+
+        return args