2017-04-03: reduce sampling steps

reduce sampling steps

diff --git a/examples/benchmark.w b/examples/benchmark.w
--- a/examples/benchmark.w
+++ b/examples/benchmark.w
@@ -64,7 +64,7 @@ define* : benchmark-run-single fun #:key
             profiler (* 4 loop-num) ;; for fast functions I need to go up rapidly, for slow ones I need to avoid overshooting
 
 ;; Define targets for the data aquisition
-define max-iterations 1.e4 ;; at most 10k samples, which is more than I typically see
+define max-iterations 1024 ;; at most 1024 samples
 define max-relative-uncertainty 0.3 ;; 3 sigma from 0
 define min-aggregated-runtime-seconds 1.e-5 ;; 10μs ~ 30k cycles
 define max-absolute-uncertainty-seconds 1.e-3 ;; 1ms, required to ensure that the model uses the higher values (else they would have huge uncertainties). If you find you need more, use a smaller test case.