Re: How to make Octave build and run natively on Windows?

[Laurent Mazet]

"John W. Eaton" <address@hidden> said:
> On 19-Nov-2004, Laurent Mazet <address@hidden> wrote:
> ..
> | On the same computer, I run the standard Octave2.m test on octave 2.1.50a
> | from  http://octave.sf.net i.e. with octave-forge and a blas optimzed for
> | PIII (some segfault on my Duron :-( ):
> 
> If the BLAS is optimized for PIII, then couldn't that be the reason
> that you are seeing different results rather than it being linked with
> Cygwin?  It seems to me that we need a comparison where the only
> difference is Cygwin vs. no Cygwin.
 
Same benchmaks on octave 2.1.60 CygWin compiled by myself with gcc 3.3.1.
If someone have an archive of gcc 3.2.3, I can rebuild with it to be fair

   Octave Benchmark 2
   ==================
Number of times each test is run__________________________: 3

   I. Matrix calculation
   ---------------------
Creation, transp., deformation of a 1500x1500 matrix (sec): 2.751
800x800 normal distributed random matrix ^1000______ (sec): 0.8403
Sorting of 2,000,000 random values__________________ (sec): 3.69
700x700 cross-product matrix (b = a' * a)___________ (sec): 14.85
Linear regression over a 600x600 matrix (c = a \ b') (sec): 3.016
                  ------------------------------------------------------
                Trimmed geom. mean (2 extremes eliminated): 3.128

   II. Matrix functions
   --------------------
FFT over 800,000 random values______________________ (sec): 1.731
Eigenvalues of a 320x320 random matrix______________ (sec): 2.604
Determinant of a 650x650 random matrix______________ (sec): 3.733
Cholesky decomposition of a 900x900 matrix__________ (sec): 3.169
Inverse of a 400x400 random matrix__________________ (sec): 2.424
                  ------------------------------------------------------
                Trimmed geom. mean (2 extremes eliminated): 2.714

   III. Programmation
   ------------------
750,000 Fibonacci numbers calculation (vector calc)_ (sec): 2.023
Creation of a 2250x2250 Hilbert matrix (matrix calc) (sec): 2.019
Grand common divisors of 70,000 pairs (recursion)___ (sec): 2.683
Creation of a 220x220 Toeplitz matrix (loops)_______ (sec): 20.25
Escoufier's method on a 37x37 matrix (mixed)________ (sec): 20.49
                  ------------------------------------------------------
                Trimmed geom. mean (2 extremes eliminated): 4.79

Total time for all 15 tests_________________________ (sec): 86.27
Overall mean (sum of I, II and III trimmed means/3)_ (sec): 3.439
                      --- End of test ---
-- 
Dr. Laurent Mazet    -=-  /Use the source, Luke/  -=-   
address@hidden