WIP: trying to make mpi branch working

garlic/exp/hpcg/serial.nix

@@ -16,9 +16,7 @@ let
   varConfig = {
     cc = [ bsc.icc ];
     gitBranch = [ "garlic/seq" ];
-    nx = [ 104 64 ];
-    ny = [ 104 64 ];
-    nz = [ 104 64 ];
+    n = [ 104 64 ];
   };
 
   # Common configuration
@@ -106,9 +104,9 @@ let
   argv = {stage, conf, ...}: with conf; w.argv {
     program = stageProgram stage;
     argv = ''(
-      --nx=${toString nx}
-      --ny=${toString ny}
-      --nz=${toString nz}
+      --nx=${toString n}
+      --ny=${toString n}
+      --nz=${toString n}
     )'';
   };
 
@@ -158,7 +156,7 @@ let
     # Optionally profile nanos6 with the new ctf
     ++ optional enableCtf ctf
 
-    # Execute the nbody app with the argv and env vars
+    # Execute the hpcg app with the argv and env vars
     ++ [ argv hpcgFn ];
 
   # List of actual programs to be executed