Engage multiple threads

package.yaml

@@ -51,6 +51,8 @@ dependencies:
 - primitive
 - streaming
 - repa
+- monad-parallel
+- parallel
 
 library:
   source-dirs: src
@@ -66,7 +68,10 @@ executables:
     - -threaded
     - -O2
     - -rtsopts
+    - -eventlog
+    - -with-rtsopts=+RTS
     - -with-rtsopts=-N
+    - -with-rtsopts=-l
     - -flate-dmd-anal
     - -fno-liberate-case 
     - -fno-state-hack