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# Copyright 2013-2023 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)

import os.path
import sys

from spack.package import *


class Mvapich2Gdr(AutotoolsPackage):
    """MVAPICH2-GDR is an optimized version of the MVAPICH2 MPI library for
    GPU-enabled HPC and Deep Learning Applications. MVAPICH2-GDR is not
    installable from source and is only available through a binary mirror.
    If you do not find the binary you're looking for, send us an email at
    mvapich@cse.ohio-state.edu. The binary mirror url is:
    http://mvapich.cse.ohio-state.edu/download/mvapich/spack-mirror/mvapich2-gdr/
    """

    homepage = "http://mvapich.cse.ohio-state.edu"
    url = "http://mvapich.cse.ohio-state.edu/download/mvapich/spack-mirror/mvapich2-gdr/mvapich2-gdr-2.3.6.tar.gz"

    maintainers("ndcontini", "natshineman", "harisubramoni")

    version("2.3.7", sha256="7bf748ed3750aa607382fc96229e256d888824aed758ce364b1ed9429da4779e")
    version("2.3.6", sha256="618408431348164c0824f3a72dc406763f169f7f5400f3cc15dfebf8d7166005")
    version("2.3.5", sha256="bcfe8197875405af0ddbf6462e585efc21668108bec9b481fe53616ad36a98b4")
    version("2.3.4", sha256="ed78101e6bb807e979213006ee5f20ff466369b01f96b6d1cf0c471baf7e35aa")
    version("2.3.3", sha256="9b7b5dd235dbf85099fba3b6f1ccb49bb755923efed66ddc335921f44cb1b8a8")

    provides("mpi")
    provides("mpi@:3.1")

    variant(
        "process_managers",
        description="The process manager to activate.",
        default="mpirun",
        values=("none", "slurm", "mpiexec", "mpirun", "pbs", "jsrun"),
        multi=False,
    )

    variant(
        "distribution",
        description="The type of fabric distribution.",
        default="stock-ofed",
        values=("stock-ofed", "mofed4.5", "mofed4.6", "mofed4.7", "mofed5.0"),
        multi=False,
    )

    variant(
        "pmi_version",
        description="The pmi version to be used with slurm. "
        "Is ignored if set for mpirun or jsrun. "
        "jsrun uses pmix regardless of chosen option.",
        default="pmi1",
        values=("simple", "pmi1", "pmi2", "pmix"),
        multi=False,
    )

    variant("mcast", description="Enable/Disable support for mcast", default=True)

    variant("openacc", description="Enable/Disable support for openacc", default=False)

    variant("core_direct", description="Enable/Disable support for core_direct", default=False)

    variant("cuda", description="Enable/Disable support for cuda", default=True)

    variant("rocm", description="Enable/Disable support for ROCM", default=False)
    conflicts("+rocm", when="@:2.3.4", msg="MVAPICH2-GDR only supports ROCm in version >= 2.3.5")
    conflicts("+cuda +rocm", msg="MVAPICH2-GDR can only be built with either CUDA or ROCm")
    conflicts("~cuda ~rocm", msg="MVAPICH2-GDR must be built with either CUDA or ROCm")
    conflicts(
        "process_managers=slurm pmi_version=simple",
        msg="MVAPICH2-GDR can not be built with slurm and simple pmi",
    )

    depends_on("bison@3.4.2", type="build")
    depends_on("libpciaccess@0.13.5", when=(sys.platform != "darwin"))
    depends_on("libxml2@2.9.10")
    depends_on("cuda@9.2.88:", when="+cuda")
    depends_on("pmix@3.1.3", when="pmi_version=pmix")
    depends_on("hip@3.9.0:", when="+rocm")

    filter_compiler_wrappers("mpicc", "mpicxx", "mpif77", "mpif90", "mpifort", relative_root="bin")

    @property
    def libs(self):
        query_parameters = self.spec.last_query.extra_parameters
        libraries = ["libmpi"]

        if "cxx" in query_parameters:
            libraries = ["libmpicxx"] + libraries

        return find_libraries(libraries, root=self.prefix, shared=True, recursive=True)

    @property
    def process_manager_options(self):
        spec = self.spec

        opts = []

        if "~mcast" in spec:
            opts.append("--disable-mcast")

        if "+core_direct" in spec:
            opts.append("--with-core-direct")

        if "+openacc" in spec:
            opts.append("--enable-openacc")

        if "+cuda" in spec:
            opts.append("--enable-cuda")
            opts.append("--disable-gl")
            opts.append("--disable-cl")
            # opts.append("--disable-nvml")
            opts.append("--disable-opencl")
            opts.append("--with-cuda=" + spec["cuda"].prefix)

        if "+rocm" in spec:
            opts.append("--enable-hip=basic")
            opts.append("--enable-rocm")
            opts.append("--with-rocm=" + spec["hip"].prefix)
            opts.append("--disable-gl")

        if "process_managers=mpiexec" in spec:
            opts.append("--with-pm=mpiexec")
            opts.append("--with-pmi=" + spec.variants["pmi_version"].value)
            if "pmi_version=pmix" in spec:
                opts.append("--with-pmix={0}".format(spec["pmix"].prefix))
        # See: http://slurm.schedmd.com/mpi_guide.html#mvapich2
        elif "process_managers=slurm" in spec:
            opts.append("--with-pm=slurm")
            opts.append("--with-pmi=" + spec.variants["pmi_version"].value)
            if "pmi_version=pmix" in spec:
                opts.append("--with-pmix={0}".format(spec["pmix"].prefix))
        elif "process_managers=none" in spec:
            opts.append("--with-pm=none")
            opts.append("--with-pmi=" + spec.variants["pmi_version"].value)
            if "pmi_version=pmix" in spec:
                opts.append("--with-pmix={0}".format(spec["pmix"].prefix))
        elif "process_managers=pbs" in spec:
            opts.append(["--with-pm=hydra", "--with-pbs=/opt/pbs"])
        elif "process_managers=jsrun" in spec:
            opts.append(
                ["--with-pmi=pmix", "--with-pmix={0}".format(spec["pmix"].prefix), "--with-pm=jsm"]
            )
        return opts

    def setup_build_environment(self, env):
        # mvapich2 configure fails when F90 and F90FLAGS are set
        env.unset("F90")
        env.unset("F90FLAGS")

    def setup_run_environment(self, env):
        if "pmi_version=pmi1" in self.spec:
            env.set("SLURM_MPI_TYPE", "pmi1")
        if "pmi_version=pmi2" in self.spec:
            env.set("SLURM_MPI_TYPE", "pmi2")
        if "pmi_version=pmix" in self.spec:
            env.set("SLURM_MPI_TYPE", "pmix")

        # Because MPI functions as a compiler, we need to treat it as one and
        # add its compiler paths to the run environment.
        self.setup_compiler_environment(env)

    def setup_dependent_build_environment(self, env, dependent_spec):
        self.setup_compiler_environment(env)

        # use the Spack compiler wrappers under MPI
        env.set("MPICH_CC", spack_cc)
        env.set("MPICH_CXX", spack_cxx)
        env.set("MPICH_F77", spack_f77)
        env.set("MPICH_F90", spack_fc)
        env.set("MPICH_FC", spack_fc)

    def setup_compiler_environment(self, env):
        env.set("MPICC", join_path(self.prefix.bin, "mpicc"))
        env.set("MPICXX", join_path(self.prefix.bin, "mpicxx"))
        env.set("MPIF77", join_path(self.prefix.bin, "mpif77"))
        env.set("MPIF90", join_path(self.prefix.bin, "mpif90"))

    def setup_dependent_package(self, module, dependent_spec):
        self.spec.mpicc = join_path(self.prefix.bin, "mpicc")
        self.spec.mpicxx = join_path(self.prefix.bin, "mpicxx")
        self.spec.mpifc = join_path(self.prefix.bin, "mpif90")
        self.spec.mpif77 = join_path(self.prefix.bin, "mpif77")
        self.spec.mpicxx_shared_libs = [
            os.path.join(self.prefix.lib, "libmpicxx.{0}".format(dso_suffix)),
            os.path.join(self.prefix.lib, "libmpi.{0}".format(dso_suffix)),
        ]

    def configure_args(self):
        spec = self.spec

        args = [
            "--with-ch3-rank-bits=32",
            "--without-hydra-ckpointlib",
            "--disable-static",
            "--enable-shared",
            "--disable-rdma-cm",
        ]

        # prevents build error regarding gfortran not allowing mismatched arguments
        if spec.satisfies("%gcc@10.0.0:"):
            args.extend(["FFLAGS=-fallow-argument-mismatch", "FCFLAGS=-fallow-argument-mismatch"])

        args.extend(self.process_manager_options)
        return args