Re: DECstation 2100 floating point

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

> > I tried pkgsrc/benchmark/flops on NetBSD/cobalt 5.99.44 and
> > it shows a bit strange result:
> 
> That's odd, on my RaQ 2, running NetBSD/Cobalt 5.0.2, with flops
> installed from pkgsrc, I get normal-looking results:
 :

I tried it again on the same machine and now it shows sane results:
---
# ./flops

   FLOPS C Program (Double Precision), V2.0 18 Dec 1992

   Module     Error        RunTime      MFLOPS
                            (usec)
     1     -4.6896e-13      0.4897     28.5902
     2      2.2160e-13      0.2482     28.2060
     3     -6.9944e-15      0.4963     34.2511
     4     -9.7256e-14      0.4762     31.4990
     5     -1.6542e-14      0.7981     36.3357
     6      4.3632e-14      0.5903     49.1282
     7     -4.9454e-11      0.8182     14.6667
     8      7.2164e-14      0.6235     48.1187

   Iterations      =   32000000
   NullTime (usec) =     0.0000
   MFLOPS(1)       =    29.9332
   MFLOPS(2)       =    24.8230
   MFLOPS(3)       =    34.0147
   MFLOPS(4)       =    41.6230

# 
---

Probably flops might have some bugs (uninitialized variable etc?)
and we should also check other programs...

---
Izumi Tsutsui