Hi,

I solve my GAMS model by MPEC solver and 5 infeasible

solution with the following warning.

Does anybody have any idea how to address this warning, or

what this warning means?

Thanks a lot!

# Lili

\

===============================

** Warning ** All Jacobian elements in the rows marked

below are

less than the absolute pivot tolerance

1.0E-10 (Rtpiva)

in the final point. Only slacks or

artificials can

be basic in these rows.

A better scaling or better bounds on the

variables

may help the optimization.

Freq_Profitb(5,2): All Jacobian elements in the row are

very small.

Freq_Profitb(6,3): All Jacobian elements in the row are

very small.

Freq_Profitb(7,2): All Jacobian elements in the row are

very small.

Freq_Profitb(8,2): All Jacobian elements in the row are

very small.

Freq_Profitb(9,2): All Jacobian elements in the row are

very small.

Equ out of rage:=E " " 530 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 533 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 535 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 542 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 544 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 548 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 550 ": All Jacobian elements

in

\

Hi,

It happen the same error. I dont know how to solve the jacobian

elements.

On 10 jun, 15:54, “Lili Du” wrote:

Hi,

I solve my GAMS model by MPEC solver and 5 infeasible

solution with the following warning.

Does anybody have any idea how to address this warning, or

what this warning means?

Thanks a lot!

Lili

# ============================================================

** Warning ** All Jacobian elements in the rows marked

below are

less than the absolute pivot tolerance

1.0E-10 (Rtpiva)

in the final point. Only slacks or

artificials can

be basic in these rows.

A better scaling or better bounds on the

variables

may help the optimization.

```
Freq_Profitb(5,2): All Jacobian elements in the row are
```

very small.

Freq_Profitb(6,3): All Jacobian elements in the row are

very small.

Freq_Profitb(7,2): All Jacobian elements in the row are

very small.

Freq_Profitb(8,2): All Jacobian elements in the row are

very small.

Freq_Profitb(9,2): All Jacobian elements in the row are

very small.

Equ out of rage:=E " " 530 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 533 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 535 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 542 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 544 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 548 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 550 ": All Jacobian elements

in

\

I finally solve this problem by assigning suitable starting point of

our problem. Namely I gave propoer .lo values to some nonlinear

variables. Hope this can help other people in the future.

Lili

On Jun 10, 10:54 am, “Lili Du” wrote:

Hi,

I solve my GAMS model by MPEC solver and 5 infeasible

solution with the following warning.

Does anybody have any idea how to address this warning, or

what this warning means?

Thanks a lot!

Lili

# ============================================================

** Warning ** All Jacobian elements in the rows marked

below are

less than the absolute pivot tolerance

1.0E-10 (Rtpiva)

in the final point. Only slacks or

artificials can

be basic in these rows.

A better scaling or better bounds on the

variables

may help the optimization.

```
Freq_Profitb(5,2): All Jacobian elements in the row are
```

very small.

Freq_Profitb(6,3): All Jacobian elements in the row are

very small.

Freq_Profitb(7,2): All Jacobian elements in the row are

very small.

Freq_Profitb(8,2): All Jacobian elements in the row are

very small.

Freq_Profitb(9,2): All Jacobian elements in the row are

very small.

Equ out of rage:=E " " 530 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 533 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 535 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 542 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 544 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 548 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 550 ": All Jacobian elements

in

\

hallo lili

i also have the same problem like you had 2 years ago.

1 error(s): Infeasible row with only small Jacobian elements.

what did you have done to solve this problem?

thx

chen from germany

Am Donnerstag, 16. Juni 2011 23:16:31 UTC+2 schrieb LL:

I finally solve this problem by assigning suitable starting point of

our problem. Namely I gave propoer .lo values to some nonlinear

variables. Hope this can help other people in the future.

Lili

On Jun 10, 10:54 am, “Lili Du” wrote:

Hi,

I solve my GAMS model by MPEC solver and 5 infeasible

solution with the following warning.

Does anybody have any idea how to address this warning, or

what this warning means?

Thanks a lot!

Lili

# ============================================================

** Warning ** All Jacobian elements in the rows marked

below are

less than the absolute pivot tolerance

1.0E-10 (Rtpiva)

in the final point. Only slacks or

artificials can

be basic in these rows.

A better scaling or better bounds on the

variables

may help the optimization.

```
Freq_Profitb(5,2): All Jacobian elements in the row are
```

very small.

Freq_Profitb(6,3): All Jacobian elements in the row are

very small.

Freq_Profitb(7,2): All Jacobian elements in the row are

very small.

Freq_Profitb(8,2): All Jacobian elements in the row are

very small.

Freq_Profitb(9,2): All Jacobian elements in the row are

very small.

Equ out of rage:=E " " 530 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 533 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 535 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 542 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 544 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 548 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 550 ": All Jacobian elements

in

–

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Hi Lili,

This was really Helpful. Thanks.

Regards,

Narayen

On Thursday, 16 June 2011 23:16:31 UTC+2, LL wrote:

I finally solve this problem by assigning suitable starting point of

our problem. Namely I gave propoer .lo values to some nonlinear

variables. Hope this can help other people in the future.

Lili

On Jun 10, 10:54 am, “Lili Du” wrote:

Hi,

I solve my GAMS model by MPEC solver and 5 infeasible

solution with the following warning.

Does anybody have any idea how to address this warning, or

what this warning means?

Thanks a lot!

Lili

# ============================================================

** Warning ** All Jacobian elements in the rows marked

below are

less than the absolute pivot tolerance

1.0E-10 (Rtpiva)

in the final point. Only slacks or

artificials can

be basic in these rows.

A better scaling or better bounds on the

variables

may help the optimization.

```
Freq_Profitb(5,2): All Jacobian elements in the row are
```

very small.

Freq_Profitb(6,3): All Jacobian elements in the row are

very small.

Freq_Profitb(7,2): All Jacobian elements in the row are

very small.

Freq_Profitb(8,2): All Jacobian elements in the row are

very small.

Freq_Profitb(9,2): All Jacobian elements in the row are

very small.

Equ out of rage:=E " " 530 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 533 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 535 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 542 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 544 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 548 ": All Jacobian elements

in the row are very s

mall."

Equ out of rage:=E " " 550 ": All Jacobian elements

in

–

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To post to this group, send email to gamsworld@googlegroups.com.

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For more options, visit https://groups.google.com/d/optout.

Hope this can help you!

Recently, I use nlpec solver to solve a bi-level program with complementary constranits. I have ecountered the same problem. I find that there is no non-linear variables in my model and the bound of variables can not be set arbitrarily for some reason. Follows by the option setting below, I got the correat solution

option MPEC = nlpec;

$onecho > nlpec.opt

refType mult

slack positive

initmu 1.0

numsolves 4

updatefac 0.1

finalmu 1e-6

$offecho

Note that the initmu must not set too big.