Re: Octave on Windows with large arrays ?

[Tatsuro MATSUOKA]

----- Original Message -----
>From: Julien Bect 
>To: address@hidden 
>Date: 2017/3/17, Fri 06:06
>Subject: Re: Octave on Windows with large arrays ?
> 
>
>Le 16/03/2017 à 09:11, Tatsuro MATSUOKA a écrit :
>
>I have executed __run_test_suite__ but hangs.   libinterp\corefcn\lsode.cc-tst 
>.............................. LSODE--  AT T (=R1) AND STEP SIZE H (=R2), THE
       CORRECTOR CONVERGENCE FAILED REPEATEDLY
       OR WITH ABS(H) = HMIN
      In above,  R1 =  0.0000000000000D+00   R2 =  0.3802108489572D-09
 LSODE--  AT T (=R1) AND STEP SIZE H (=R2), THE
       CORRECTOR CONVERGENCE FAILED REPEATEDLY
       OR WITH ABS(H) = HMIN
      In above,  R1 =  0.0000000000000D+00   R2 =  0.6424715644617D-09
 LSODE--  AT T (=R1) AND STEP SIZE H (=R2), THE
       CORRECTOR CONVERGENCE FAILED REPEATEDLY
       OR WITH ABS(H) = HMIN
      In above,  R1 =  0.0000000000000D+00   R2 =  0.4165001171641D-09
 PASS      2/5
                                                                  FAIL    3
  libinterp\corefcn\lu.cc-tst .................................panic: 
Segmentation fault -- stopping myself... Mmmmmmmm. Anyway I will test again 
against binary I am now re-building after clean up.
>
>Hi Tatsuro,
>
>I haven't tried myself, but my colleague confirmed the crash with
      lsode.
>
>There were also some failed tests with det and eig (see below). 
      Have you already seen these ?
>
>@++
>Julien
>
>
>________________________________
> 
>***** assert (det ([1, 2; 3, 4]), -2, 10*eps) 
>!!!!! test failed 
>ASSERT errors for:  assert (det ([1, 2; 3, 4]),-2,10 * eps) 
> 
>  Location  |  Observed  |  Expected  |  Reason 
>     ()           2            -2        Abs err 4 exceeds tol 2.2204e-015 
>
>***** assert (det (single ([1, 2; 3, 4])), single (-2), 10*eps ("single")) 
>!!!!! test failed 
>ASSERT errors for:  assert (det (single ([1, 2; 3, 4])),single (-2),10 * eps 
>("single")) 
> 
>  Location  |  Observed  |  Expected  |  Reason 
>     ()           2            -2        Abs err 4 exceeds tol 1.1921e-006 
>
>***** test 
> A = diag([10^-16, 10^-15]); 
> chol_qz_accuracy (A, A, true, false); 
>!!!!! test failed 
>ASSERT errors for:  assert (isequal (A * V2, A * V2 * D2),is_chol_accurate) 
> 
>  Location  |  Observed  |  Expected  |  Reason 
>     ()           1            0         Abs err 1 exceeds tol 0
>
>


I have built again octave-4.2.1 with LargeArray after clean up but results are 
the same.

>I haven't tried myself, but my colleague confirmed the crash with
      lsode.


crash happens on lu but not onlsode

  libinterp\corefcn\lu.cc-tst .................................panic: 
Segmentation fault -- stopping myself...


on lsode error happens.

Hang on lu is easy to reproduce.

>> A=rand(5);
>> [L,U,P]=lu(A);

panic: Segmentation fault -- stopping myself...
attempting to save variables to 'octave-workspace'...
save to 'octave-workspace' complete

>There were also some failed tests with det and eig (see below). 
      Have you already seen these ?


I have also seen this.

On octave-4.0.3 for windows with Large Arrays, I have not seen such errors on 
__run_test_suite__.

Unfortunately octave-4.2.x for windows with Large Arrays has many fault, it 
cannot be usable.

octave-4.0.3 for windows with Large Arrays can be downloaded from 
http://www.tatsuromatsuoka.com/octave/Eng/Win/


Tatsuro