Changeset fd84538

Timestamp:

Dec 16, 2020, 3:03:03 PM (4 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

ADT, arm-eh, ast-experimental, enum, forall-pointer-decay, jacob/cs343-translation, master, new-ast-unique-expr, pthread-emulation, qualifiedEnum

Children:

024fa4b

Parents:

2dd0689

Message:

changed locality benchmark to no longer use rand, which is too slow.

File:

• benchmark/readyQ/locality.go (modified) (2 diffs)

benchmark/readyQ/locality.go

@@ -61 +61 @@
 }
 
-
+func __xorshift64( state * uint64 ) (uint64) {
+        x := *state
+        x ^= x << 13
+        x ^= x >> 7
+        x ^= x << 17
+        *state = x
+        return x
+}
 
 func local(result chan uint64, start chan struct{}, size uint64, cnt uint64, channels [] Spot, share bool) {
-        lrand := rand.New(rand.NewSource(rand.Int63()))
+        state := rand.Uint64()
         var data [] uint64
         data = make([]uint64, size)
@@ -78 +85 @@
         for true {
                 for i := uint64(0); i < cnt; i++ {
-                        data[lrand.Uint64() % size] += 1
+                        data[__xorshift64(&state) % size] += 1
                 }
 
-                i := lrand.Int() % len(channels)
+                i := __xorshift64(&state) % uint64(len(channels))
                 data = channels[i].put(sem, data, share)
                 count += 1