Re: [petsc-users] Configure issues with scalapack

I would: - use 'top' to see where the hang is - retry the build and see if the hang persists - tweak compiler options [change from -O3 to -O2 or such, or use latest cmake] and see if that makes a difference. Also note - the instructions for using Intel OneAPI MPI https://urldefense.us/v3/__http

Re: [petsc-users] Would Mac OS version affect PETSc/C/C++ performance?

Do you have -log_view report so that we can know which petsc functions degraded? Or is it because compilers were different? --Junchao Zhang On Sun, Aug 18, 2024 at 6:04 PM Zou, Ling via petsc-users < petsc-users@mcs.anl.gov> wrote: > Hi all, > > > > After updating Mac OS from Ventura to Sonoma

Re: [petsc-users] Configure issues with scalapack

You need to send configure.log to petsc-ma...@mcs.anl.gov so we can potentially locate the problem. > On Aug 19, 2024, at 8:23 PM, Amneet Bhalla wrote: > > Hi Folks, > > I am trying to build PETSc with MUMPS which requires building/downloading > scalapack

[petsc-users] Configure issues with scalapack

Hi Folks, I am trying to build PETSc with MUMPS which requires building/downloading scalapack. I used the following configure command to do this: ./configure --PETSC_ARCH=linux-opt --with-debugging=0 --download-hypre=1 --with-x=0 -download-mumps -download-scalapack -download-parmetis -download-me

Re: [petsc-users] PCFactorSetMatOrderingType not working with 3.21

That’s nice. Thank you! -Ling From: Barry Smith Date: Sunday, August 18, 2024 at 6:31 PM To: Zou, Ling Cc: petsc-users@mcs.anl.gov Subject: Re: [petsc-users] PCFactorSetMatOrderingType not working with 3.21 You can call PCSetType(pc,PCILU); KSPSetFromOptions(ksp); PCFactorSetMatOrderingType(pc

Re: [petsc-users] Strong scaling concerns for PCBDDC with Vector FEM

It seems you are using DMPLEX to handle the mesh, correct? If so, you should configure using --download-parmetis to have a better domain decomposition since the default one just splits the cells in chunks as they are ordered. This results in a large number of primal dofs on average (191, from the o