Seed random number generator for determinism

Andrew Waterman · Andrew Waterman · commit 2ee1b541ea52 · 2015-07-29T18:00:09.000-07:00
diff --git a/examples/Life.scala b/examples/Life.scala
@@ -28,7 +28,7 @@ class Life(val n: Int) extends Module {
     val state = Vec(Bool(OUTPUT), tot)
   }
   def idx(i: Int, j: Int) = ((j+n)%n)*n+((i+n)%n)
-  val rnd = new Random()
+  val rnd = new Random(1)
   val cells = Range(0, tot).map(i => Module(new Cell(rnd.nextInt(2) == 1)))
   for (k <- 0 until tot)
     io.state(k) := cells(k).io.out

Original file line number	Diff line number	Diff line change
`@@ -28,7 +28,7 @@ class Life(val n: Int) extends Module {`
`28`	`28`	`val state = Vec(Bool(OUTPUT), tot)`
`29`	`29`	`}`
`30`	`30`	`def idx(i: Int, j: Int) = ((j+n)%n)*n+((i+n)%n)`
`31`		`- val rnd = new Random()`
	`31`	`+ val rnd = new Random(1)`
`32`	`32`	`val cells = Range(0, tot).map(i => Module(new Cell(rnd.nextInt(2) == 1)))`
`33`	`33`	`for (k <- 0 until tot)`
`34`	`34`	`io.state(k) := cells(k).io.out`