[petsc-users] Error of MatMPIAIJSetPreallocation

[Qin Lu]

Hello,
My program got error 55 from calling MatMPIAIJSetPreallocation with Petsc version 3.12.5, what does this error mean? Interestingly, the same program using an older version 3.4.2 works fine. I did make necessary interface change in my program when I upgraded to 3.12.5. 
Thanks in advance for your help. 
Regards,Qin
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