Minor manual page fixes

Profiling: autostart -log_perfstubs if TAU_EXEC_PATH is in the environment

Merge branch 'jolivet/cleanup' into 'main'

Autumn cleanup

See merge request petsc/petsc!6915

Remove unnecessary spaces

Fix typos

release: set petsc v3.20.0 strings

Remove first and last empty lines

Profiling: Create PETSCLOGHANDLERNVTX

Make PetscDeviceContextGetStreamHandle() take a void ** instead of void *

Minor PetscDeviceContextGetStreamHandle() documentation spelling fixes and copy-edits

Convert all header guards to pragma once

Eagerly destroy serial objects with PetscObjectDelayedDestroy

Sys: no need to register a finalizer for log_view_gpu_time

otherwise, PetscObjectRegisterDestroyAll() will change PetscLogGpuTimeFlag to false before PetscLogViewFromOptions(), causing "nan " in out

Sys: no need to register a finalizer for log_view_gpu_time

otherwise, PetscObjectRegisterDestroyAll() will change PetscLogGpuTimeFlag to false before PetscLogViewFromOptions(), causing "nan " in output.

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Delete unused code

Add static to internal functions

Merge branch 'barry/2023-08-10/cannot-destroy-persistant-objects' into 'main'

(1) Fix error return codes for PetscHeaderCreate/Destroy() Cannot use || on them (2) do not allow destroying PETSC_VIEWE

Merge branch 'barry/2023-08-10/cannot-destroy-persistant-objects' into 'main'

(1) Fix error return codes for PetscHeaderCreate/Destroy() Cannot use || on them (2) do not allow destroying PETSC_VIEWER_STDOUT_SELF etc

See merge request petsc/petsc!6804

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Some objects such as PETSC_VIEWER_STDOUT_WORLD cannot be destroyed by users.

Reported-by: maitri ksh <maitri.ksh@gmail.com>

Fix error return codes for PetscHeaderDestroy() Cannot use || on them

Commit-type: error-checking

Merge branch 'jczhang/2023-08-08/feature-hypre-device-matzerorows' into 'main'

Support MatZeroRows on MatHYPRE on device

See merge request petsc/petsc!6790

Sys: add PetscGetCurrentCUDA/HIPStream()

Improve object_pool compile time by taking the core allocator out of the header

Use std::weak_ptr to ensure destroyed device contexts are not accessed

The various PetscXXXRegisterFinalize() should execute finalizers in reverse order of registration

Sys: Introduce -on_error_malloc_dump and PETSC_ERR_MEM_LEAK

To avoid a malloc dump that swamps the error output of another error,
this makes calling `PetscMallocDump()` in the error handlers opt-in,

Sys: Introduce -on_error_malloc_dump and PETSC_ERR_MEM_LEAK

To avoid a malloc dump that swamps the error output of another error,
this makes calling `PetscMallocDump()` in the error handlers opt-in,
with a different flag (`-on_error_malloc_dump`) from the flag for
calling `PetscMallocDump()` in `PetscFinalize()` (just `-malloc_dump`).

The addition of `PETSC_ERR_MEM_LEAK` allows for better error messages:
`~PoolAllocator()` can detect a memory leak even if the system
is not out of memory, so the error message will not say that for
`PETSC_ERR_MEM_LEAK`.

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Profiling: Use PetscOptionsGetViewers() in -log_view