hpcg: precompute the input

garlic/exp/hpcg/oss.nix

@@ -4,6 +4,7 @@
 , bsc
 , targetMachine
 , stages
+, genInput
 }:
 
 with stdenv.lib;
@@ -13,8 +14,8 @@ let
   varConf = with bsc; {
     # FIXME: Temporally reduce the input size until we can load a precomputed
     # input in each run, otherwise the execution time is very large.
-    n = [ { x = 104; y = 104; z = 104; } ];
-    #n = [ { x = 256; y = 288; z = 288; } ];
+    #n = [ { x = 104; y = 104; z = 104; } ];
+    n = [ { x = 256; y = 288; z = 288; } ];
     nblocks = [ 12 24 48 96 192 384 ];
   };
 
@@ -50,6 +51,8 @@ let
     inherit varConf genConf;
   };
 
+  input = genInput configs;
+
   exec = {nextStage, conf, ...}: with conf; stages.exec {
     inherit nextStage;
     env = "NANOS6_DEPENDENCIES=discrete";
@@ -58,6 +61,9 @@ let
       "--ny=${toString n.y}"
       "--nz=${toString n.z}"
       "--nblocks=${toString nblocks}"
+      # The input symlink is generated by the input stage, which is generated by
+      # the genInput function.
+      "--load=input"
     ];
   };
 
@@ -69,8 +75,9 @@ let
       inherit cc nanos6 mcxx gitBranch;
     };
 
-  pipeline = stdexp.stdPipeline ++ [ exec program ];
+  pipeline = stdexp.stdPipeline ++ [ input exec program ];
 
 in
 
+  #{ inherit configs pipeline; }
   stdexp.genExperiment { inherit configs pipeline; }