[Bug-gsl] [bug #50712] Test failure for lm+accel and fdfvv

[Patrick Alken]

URL:
  <http://savannah.gnu.org/bugs/?50712>

                 Summary: Test failure for lm+accel and fdfvv
                 Project: GNU Scientific Library
            Submitted by: psa
            Submitted on: Mon 03 Apr 2017 09:56:24 PM UTC
                Category: None
                Severity: 3 - Normal
        Operating System: 
                  Status: None
             Assigned to: None
             Open/Closed: Open
                 Release: 
         Discussion Lock: Any

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Details:

Using an older compiler, on i586 the tests fail to converge in a
multifit_nlinear test,

[  304s] FAIL: test
[  304s] ==========
[  304s]
[  304s] trs = levenberg-marquardt
[  304s] solver = cholesky
[  304s] solver = qr
[  304s] solver = svd
[  304s] trs = levenberg-marquardt+accel
[  304s] solver = cholesky
[  304s] solver = qr
[  304s] solver = svd
[  304s] FAIL:
trust-region/levenberg-marquardt+accel/scale=more/solver=svd/fdfvv/box3d
did not converge, status=exceede
d max number of iterations [39959]
[  304s] FAIL:
trust-region/levenberg-marquardt+accel/scale=more/solver=svd/fdfvv/weighted/box3d
did not converge, statu
s=exceeded max number of iterations [39963]
[  304s] FAIL:
trust-region/levenberg-marquardt+accel/scale=more/solver=svd/fdfvv/box3d
did not converge, status=exceede
d max number of iterations [40457]
[  304s] FAIL:
trust-region/levenberg-marquardt+accel/scale=more/solver=svd/fdfvv/weighted/box3d
did not converge, statu
s=exceeded max number of iterations [40461]
[  304s] FAIL:
trust-region/levenberg-marquardt+accel/scale=more/solver=svd/fdfvv/box3d
did not converge, status=exceede
d max number of iterations [42066]
[  304s] FAIL:
trust-region/levenberg-marquardt+accel/scale=more/solver=svd/fdfvv/weighted/box3d
did not converge, status=exceeded max number of iterations [42070]
[  304s] FAIL:
trust-region/levenberg-marquardt+accel/scale=more/solver=svd/fdfvv/box3d
did not converge, status=exceeded max number of iterations [42564]
[  304s] FAIL:
trust-region/levenberg-marquardt+accel/scale=more/solver=svd/fdfvv/weighted/box3d
did not converge, status=exceeded max number of iterations [42568]
[  304s] trs = dogleg
[  304s] solver = cholesky
[  304s] solver = qr
[  304s] solver = svd
[  304s] trs = double-dogleg
[  304s] solver = cholesky
[  304s] solver = qr
[  304s] solver = svd
[  304s] trs = 2D-subspace
[  304s] solver = cholesky
[  304s] solver = qr
[  304s] solver = svd




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