[petsc-users] Memory allocation failed

[Dominik Szczerba]

I am getting the below cited error for a big linear problem. Would
that mean int overflow and indicate the need for
--with-64-bit-indices? Obviously it will elevate the memory
requirements, but will it also reduce the performance?

Many thanks,
Dominik

Error! ***Memory allocation failed for PreAllocateMemory:
wspace->core. Requested size: -841742012 bytes