Add stream benchmark

overlay.nix

@@ -9,6 +9,7 @@ final: prev:
 
   rvb = final.callPackage ./pkgs/rvb/default.nix { };
   rvb-clang = final.callPackage ./pkgs/rvb/default.nix { stdenv = final.stdenvClangEpi; };
+  stream = final.callPackage ./pkgs/stream/default.nix { };
 
   blis = ((prev.blis.override {
     blas64 = true;

pkgs/stream/default.nix

@@ -0,0 +1,33 @@
+{
+  stdenv
+, fetchFromGitHub
+}:
+
+stdenv.mkDerivation rec {
+  pname = "stream";
+  version = "4dbce1d0";
+
+  src = fetchFromGitHub {
+    owner = "jeffhammond";
+    repo = "STREAM";
+    rev = "4dbce1d0fdb7410e8f21b48f3381bc0a1341967f";
+    sha256 = "sha256-sBwdPeaMyI/wH1Nq0yQtb/kvi5913e0azXaulOJIG3A=";
+  };
+
+  # CFLAGS='-O2 -fopenmp -DSTREAM_ARRAY_SIZE=40000000'
+  buildPhase = ''
+    set -x
+    make stream_c.exe CC=$CC FC=$FC CFLAGS=-O2
+    set +x
+  '';
+
+  #nativeBuildInputs = [ gfortran ];
+  dontStrip = true;
+  dontConfigure = true;
+  enableParallelBuilding = false;
+  hardeningDisable = [ "all" ];
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -a stream_c.exe $out/bin/stream
+  '';
+}