default.nix

{ nixpkgs ? import <nixpkgs> {} }:

with nixpkgs;

assert (!blas.isILP64) && (!lapack.isILP64);

let
  pname = "mHPL";
  version = "1.0";

  mhpl = fetchTarball {
    url = "https://www.nics.tennessee.edu/sites/default/files/HPL-site/${pname}-${version}.tgz";
    sha256 = "0hy6sayhyy2436sm9pd7jlyf3im1lg16n00k8mfppxs88h4wgmwh";
  };

  hpl = fetchTarball {
    url = "http://www.netlib.org/benchmark/hpl/hpl-2.3.tar.gz";
    sha256 = "0cyk6vbcxrmga7rp6bl2y4yly2dfg98bdaj8d36fq0qpc7bdj8jn";
  };

in stdenv.mkDerivation rec {
  inherit pname;
  inherit version;

  srcs = [ mhpl hpl ];

  enableParallelBuilding = true;

  # unpackPhase = ''
  #   mkdir -p source/{mhpl,
  # '';

  configurePhase = ''
    cat ${mhpl}/Makefile | sed s/"UNKNOWN"/"Linux_Intel64"/ > ${mhpl}/Makefile
    cat ${mhpl}/Make.top | sed s/"UNKNOWN"/"Linux_Intel64"/ > ${mhpl}/Make.top
    cat ${mhpl}/HPL-SCAL/Makefile | sed s/"UKNOWN"/"Linux_Intel64"/ > ${mhpl}/HPL-SCAL/Makefile
  '';

  postInstall = ''
    # only contains the static lib
    rm -r $out/lib

    install -D testing/ptest/HPL.dat $out/share/hpl/HPL.dat
  '';

  buildInputs = [ blas lapack openmpi ];

  meta = with stdenv.lib; {
    description = "Extension of HPL, a Portable Implementation of the Linpack Benchmark for Distributed-Memory Computers to perform single, double, complex, double complex, and mixed precisions calculations.";
    homepage = "https://www.nics.tennessee.edu/sites/default/files/HPL-site/home.html";
    platforms = platforms.unix;
    license = licenses.bsdOriginal;
    maintainers = [ maintainers.KarlJoad ];
  };
}