cn6: add clock sync experiment

garlic/exp/cn6/timediff.nix

@@ -0,0 +1,170 @@
+{
+  stdenv
+, stdexp
+, bsc
+, pkgs
+, targetMachine
+, stages
+, garlicTools
+, writeText
+, enableHWC ? false
+}:
+
+with stdenv.lib;
+with garlicTools;
+
+let
+  # Initial variable configuration
+  varConf = {
+    nodes = [ 1 2 4 8 ];
+  };
+
+  machineConfig = targetMachine.config;
+
+  genConf = c: targetMachine.config // rec {
+    expName = "timediff";
+    unitName = expName + "-nodes${toString nodes}";
+
+    inherit (machineConfig) hw;
+
+    loops = 1;
+
+    # Resources
+    cpusPerTask = hw.cpusPerSocket;
+    ntasksPerNode = hw.socketsPerNode;
+    nodes = c.nodes;
+
+    qos = "debug";
+    time = "02:00:00";
+
+    jobName = unitName;
+  };
+
+  configs = stdexp.buildConfigs {
+    inherit varConf genConf;
+  };
+
+  # Custom BSC packages
+  bsc' = bsc.extend (self: super: {
+
+    # For nanos6 we use my fork for distributed instrumentation at the
+    # latest commit
+    nanos6 = (super.nanos6Git.override {
+      enableJemalloc = true;
+    }).overrideAttrs (old: rec {
+
+      src = builtins.fetchGit {
+        url = "git@bscpm03.bsc.es:rarias/nanos6.git";
+        ref = "rodrigo";
+        rev = "5cbeabb4e0446c2c293cc3005f76e6139465caee";
+      };
+      
+      dontStrip = false;
+      version = src.shortRev;
+
+      # Disable all unused instrumentations for faster builds
+      configureFlags = old.configureFlags ++ [
+        "--disable-extrae-instrumentation"
+        "--disable-lint-instrumentation"
+        "--disable-graph-instrumentation"
+        "--disable-stats-instrumentation"
+      ];
+    });
+
+    # Use clang from master
+    clangOmpss2Unwrapped = super.clangOmpss2Unwrapped.overrideAttrs (old: rec {
+      version = src.shortRev;
+      src = builtins.fetchGit {
+        url = "ssh://git@bscpm03.bsc.es/llvm-ompss/llvm-mono.git";
+        ref = "master";
+        rev = "ce47d99d2b2b968c87187cc7818cc5040b082d6c";
+      };
+    });
+
+    # Use mcxx from master
+    mcxx = super.mcxxGit;
+
+    # We also need the instrumented version of TAMPI
+    tampi = super.tampiGit.overrideAttrs (old: rec {
+      version = src.shortRev;
+      dontStrip = true;
+      NIX_CFLAGS = "-O0 -g";
+      src = builtins.fetchGit {
+        url = "ssh://git@bscpm03.bsc.es/rarias/tampi.git";
+        ref = "instrument";
+        rev = "6e4294299bf761a1cc31f4181d9479cefa1c7f3e";
+      };
+    });
+
+    # We use the latest commit in master as src for cn6
+    cn6Git = ((super.cn6.overrideAttrs (old: rec {
+      version = src.shortRev;
+      src = builtins.fetchGit {
+        url = "ssh://git@bscpm03.bsc.es/rarias/cn6.git";
+        ref = "master";
+        rev = "1d23d01d60164b8641746d5a204128a9d31b9650";
+      };
+    })).override { enableTest = true; });
+
+    cn6 = self.cn6Git;
+  });
+
+
+  ctf = {nextStage, conf, ...}: let
+    # Create the nanos6 configuration file
+    nanos6ConfigFile = writeText "nanos6.toml" ''
+      version.instrument = "ctf"
+      turbo.enabled = false
+      instrument.ctf.converter.enabled = false
+    '' + optionalString (enableHWC) ''
+      hardware_counters.papi.enabled = true
+      hardware_counters.papi.counters = [
+        "PAPI_TOT_INS", "PAPI_TOT_CYC",
+        "PAPI_L1_TCM", "PAPI_L2_TCM", "PAPI_L3_TCM"
+      ]
+    '';
+
+  in stages.exec {
+    inherit nextStage;
+
+    # And use it
+    env = ''
+      export NANOS6_CONFIG=${nanos6ConfigFile}
+    '';
+
+    post = ''
+      rank=$SLURM_PROCID
+      tracedir=trace_timediff_mpi
+
+      # Convert CTF trace to PRV
+      ${bsc'.cn6}/bin/cn6 $tracedir/$rank
+
+      # Merge on rank 0 only
+      if [ $rank != 0 ]; then
+        exit 0;
+      fi
+
+      # Wait a bit for all ranks to finish the conversion
+      sleep 5
+
+      # Run the merger
+      ${bsc'.cn6}/bin/merge-prv $tracedir
+
+      # We need some tools the path
+      export PATH="$PATH:${bsc'.babeltrace2}/bin:${pkgs.ministat}/bin"
+
+      ${bsc'.cn6}/bin/sync-err.sh $tracedir
+    '';
+  };
+
+  exec = {nextStage, conf, ...}: stages.exec {
+    inherit nextStage;
+    program = "${bsc'.cn6}/bin/timediff_mpi";
+    argv = [ conf.cpusPerTask ];
+  };
+
+  pipeline = stdexp.stdPipeline ++ [ ctf exec ];
+
+in
+ 
+  stdexp.genExperiment { inherit configs pipeline; }

garlic/exp/index.nix

@@ -100,4 +100,8 @@
   examples = {
     granularity = callPackage ./examples/granularity.nix { };
   };
+
+  cn6 = {
+    timediff = callPackage ./cn6/timediff.nix { };
+  };
 }