Re: [petsc-users] [petsc-maint] Memory usage function: output for all ranks

Andrey Ovsyannikov writes: > Thanks for your quick response. I like Massif tool and I have been using it > recently. However, I was not able to run Valgrind for large jobs. I am > interested in memory analysis of large scale runs with more than 1000 MPI > ranks.

Re: [petsc-users] [petsc-maint] Memory usage function: output for all ranks

PETSc reporting of memory usage for objects is unfortunately not that great; for example distinguishing between temporary work space allocation vs memory that is kept for the life of the object is not always clear. Associating memory with particular objects requires the PETSc source code to

Re: [petsc-users] [petsc-maint] Memory usage function: output for all ranks

Hi Matt, Thanks for your quick response. I like Massif tool and I have been using it recently. However, I was not able to run Valgrind for large jobs. I am interested in memory analysis of large scale runs with more than 1000 MPI ranks. PetscMemoryGetCurrentUsage() works fine for this puprpose

Re: [petsc-users] [petsc-maint] Memory usage function: output for all ranks

Andrey, Maybe this is what you tried, but did you try running only a handful of MPI ranks (out of your 1000) with Massif? I've had success doing things that way. You won't know what every rank is doing, but you may be able to get a good idea from your sample. --Richard On Mon, Nov 30, 2015 at

Re: [petsc-users] [petsc-maint] Memory usage function: output for all ranks

On Mon, Nov 30, 2015 at 5:20 PM, Andrey Ovsyannikov wrote: > Dear PETSc team, > > I am working on optimization of Chombo-Crunch CFD code for next-generation > supercomputer architectures at NERSC (Berkeley Lab) and we use PETSc AMG > solver. During memory analysis study I