[petsc-users] a simple question about options left

[Xiangdong Liang]

Hello everyone,

When I compile my program with debug mode and ran it, I got

 WARNING! There are options you set that were not used!
WARNING! could be spelling mistake, etc!
Option left: name:-1 value: -1

I even got the warning if I do not provide any options. What's the option left?

However, such warning about the option left is gone if I compile my
program in arch-opt mode.  Thanks.

Xiangdong