nonsense benchtests results

[Paul Zimmermann]

       Hi,

I'd like to measure the reciprocal-throughput and latency of sin, exp, pow,
both in single, double and quadruple precision.

There is the ##name: workload-<name> documented in benchtests/README for that
(apparently, <name> is not used anywhere).

I thus added ## name: workload-spec2017.wrf (adapted) in sinf-inputs,
expf-inputs, powf-inputs, and similar files for binary64 and binary128.

This seems to work well for binary32, for example (this is with glibc-2.31):

  "expf": {
   "workload-spec2017.wrf (adapted)": {
    "duration": 3.32321e+09,
    "iterations": 1.14432e+08,
    "reciprocal-throughput": 14.88,
    "latency": 43.2017,
    "max-throughput": 6.72042e+07,
    "min-throughput": 2.31472e+07
   }

However, for binary64 I get nonsense (for "sin" I tried also without "adapted",
and in both cases the reciprocal-throughput and latency are much too big, and
for "exp" the latency is smaller than the reciprocal-throughput):

  "sin": {
   "workload-spec2017.wrf": {
    "duration": 4.02532e+09,
    "iterations": 2.8e+07,
    "reciprocal-throughput": 126.621,
    "latency": 160.902,
    "max-throughput": 7.89757e+06,
    "min-throughput": 6.21498e+06
   },

  "exp": {
   "workload-spec2017.wrf (adapted)": {
    "duration": 3.29728e+09,
    "iterations": 1.2336e+08,
    "reciprocal-throughput": 32.4024,
    "latency": 21.0555,
    "max-throughput": 3.08619e+07,
    "min-throughput": 4.74936e+07
   },

Same issue with binary128, with latency smaller than reciprocal-throughput:

  "expf128": {
   "workload-spec2017.wrf (adapted)": {
    "duration": 4.07871e+09,
    "iterations": 3.084e+06,
    "reciprocal-throughput": 2471.88,
    "latency": 173.196,
    "max-throughput": 404550,
    "min-throughput": 5.77382e+06
   },

  "powf128": {
   "workload-spec2017.wrf (adapted)": {
    "duration": 3.62441e+09,
    "iterations": 2.408e+06,
    "reciprocal-throughput": 2793.63,
    "latency": 216.675,
    "max-throughput": 357957,
    "min-throughput": 4.6152e+06
   },

Can someone make it work?

Paul