Re: More svds failures

[Marco Atzeri]

--- Mar 30/3/10, Michael D Godfrey  ha scritto:

On 03/30/2010 12:00 PM, Rik wrote:

3/30/10

There was an earlier report of svds failing either to produce the correct
number of eigenvalues or to get results matching the requested tolerance
(http://n4.nabble.com/svds-m-change-to-avoid-test-failure-td1645786.html).

The problem has returned for me.  I used a small test script, attached, and
I find that the built-in tests for svds are failing around 30% of the time.
 Is anyone else seeing this?

--Rik
  

Yes:
octave:5> printf("Percentage passed: %.0f\n", 100*passed/num_tests);
Percentage passed: 66

I too thought that this was fixed, but clearly not.
It appears that the eigenvalues get "shifted" somehow.  I need to
reread the thread to remember what I proposed.

Michael

Hi Michel,
probably it is not relevant but on my cygwin build

with lapack 3.2.1 the failure rate is 30 %
with atlas-3.9.19 the failure rate is 45 %

Regards
Marco