[petsc-users] Is there a way to estimate total memory prior to solve
Randall Mackie
rlmackie862 at gmail.com
Thu Dec 10 17:31:39 CST 2020
Dear PETSc users:
While I can calculate the amount of memory any vector arrays I allocate inside my code (and probably get pretty close to any matrices), what I don’t know how to estimate is how much memory internal PETSc iterative solvers will take.
Is there some way to get a reasonable estimate (in advance) of how much memory a PETSc solve will take given the size of the matrix and right hand side.
For example, if these solves always use BCGS and ASM preconditioning with sub type ILU and 3 levels.
This is for runs on a PC so that too large a run won’t crash the PC.
Thanks, Randy M
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