Add SPEC CPU mini with a subset of benchmarks

overlay.nix

@@ -13,6 +13,7 @@ final: prev:
 
   spec-cpu-tools = final.callPackage ./pkgs/spec-cpu/tools.nix { };
   spec-cpu = final.callPackage ./pkgs/spec-cpu/default.nix { };
+  spec-cpu-mini = final.callPackage ./pkgs/spec-cpu/mini.nix { };
   spec-cpu-clang = final.callPackage ./pkgs/spec-cpu/default.nix { stdenv = final.stdenvClangEpi; };
 
   blis = ((prev.blis.override {

pkgs/spec-cpu/default.nix

@@ -10,6 +10,7 @@
 , autoPatchelfHook
 , libxcrypt-legacy
 , lib
+, benchSize ? "test"
 }:
 
 stdenv.mkDerivation rec {
@@ -27,6 +28,7 @@ stdenv.mkDerivation rec {
     runcpu \
       --verbose=80 \
       --tune=base \
+      --size=${benchSize} \
       --output_root=$PWD/out \
       --config=$PWD/config.cfg \
       --define build_ncpus=$NIX_BUILD_CORES \

pkgs/spec-cpu/mini.nix

@@ -0,0 +1,39 @@
+{
+  stdenv
+, spec-cpu
+}:
+
+stdenv.mkDerivation rec {
+  pname = "spec-cpu-mini";
+  version = spec-cpu.version;
+  src = null;
+  unpackPhase = "true";
+
+  # Select only a subset of the benchmarks:
+  # https://www.spec.org/cpu2017/Docs/#benchdocs
+  benchList = [
+    # -- SPECspeed 2017 Integer --
+    "600.perlbench_s"
+    "602.gcc_s"
+    "605.mcf_s"
+    "620.omnetpp_s"
+    #"623.xalancbmk_s" # Big
+    #"625.x264_s" # Big
+    "631.deepsjeng_s"
+    "641.leela_s"
+    "648.exchange2_s"
+    "657.xz_s"
+  ];
+
+  dontConfigure = true;
+  dontBuild = true;
+  installPhase = ''
+    mkdir -p $out/benchspec/CPU
+    for bench in $benchList; do
+      cp -a ${spec-cpu}/benchspec/CPU/$bench $out/benchspec/CPU/
+    done
+  '';
+  enableParallelBuilding = false;
+  hardeningDisable = [ "all" ];
+  dontStrip = true;
+}