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# Copyright 2013-2024 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 Essl(BundlePackage):
"""IBM's Engineering and Scientific Subroutine Library (ESSL)."""
homepage = "https://www.ibm.com/systems/power/software/essl/"
# https://www.ibm.com/docs/en/essl/6.2?topic=whats-new
version("6.2.1.1")
variant("ilp64", default=False, description="64 bit integers")
variant(
"threads",
default="openmp",
description="Multithreading support",
values=("openmp", "none"),
multi=False,
)
variant("cuda", default=False, description="CUDA acceleration")
variant("lapackforessl", default=False, description="Provides lapackforessl lapack library")
provides("blas")
provides("lapack", when="+lapackforessl")
conflicts(
"+cuda",
when="+ilp64",
msg="ESSL+cuda+ilp64 cannot combine CUDA acceleration 64 bit integers",
)
conflicts(
"+cuda",
when="threads=none",
msg="ESSL+cuda threads=none cannot combine CUDA acceleration"
" without multithreading support",
)
@property
def blas_libs(self):
spec = self.spec
prefix = self.prefix
if "+ilp64" in spec:
essl_lib = ["libessl6464"]
else:
essl_lib = ["libessl"]
if spec.satisfies("threads=openmp"):
# ESSL SMP support requires XL or Clang OpenMP library
if "%xl" in spec or "%xl_r" in spec or "%clang" in spec:
if "+ilp64" in spec:
essl_lib = ["libesslsmp6464"]
else:
if "+cuda" in spec:
essl_lib = ["libesslsmpcuda"]
else:
essl_lib = ["libesslsmp"]
essl_root = prefix.lib64
essl_libs = find_libraries(essl_lib, root=essl_root, shared=True)
return essl_libs
@property
def lapack_libs(self):
essl_libs = find_libraries(
["liblapackforessl", "liblapackforessl_"], root=self.prefix.lib64, shared=True
)
return essl_libs
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