Hi, PetscLogView does not display the same amount of information as running with -log_summary. In the "summary of stages" section, the former contains only information on the main stage while the later contains much more. Add the following block at the end of src/snes/examples/tutorials/ex1.c, for instance, to see what I mean PetscViewer viewer; ierr = PetscViewerASCIIOpen(PETSC_COMM_WORLD,"ex1-log.py",&viewer);CHKERRQ(ierr); ierr = PetscLogViewPython(viewer);CHKERRQ(ierr); ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr); ierr = PetscViewerASCIIOpen(PETSC_COMM_WORLD,"ex1-log.txt",&viewer);CHKERRQ(ierr); ierr = PetscLogView(viewer);CHKERRQ(ierr); ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr); ierr = PetscLogPrintDetailed(PETSC_COMM_WORLD,"ex1-logdetailed.txt");CHKERRQ(ierr); Is this a bug or a feature? Is there a way to get the same output as -log_summary in a file, without printing it to stdout? Blaise -- Department of Mathematics and Center for Computation & Technology Louisiana State University, Baton Rouge, LA 70803, USA Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 http://www.math.lsu.edu/~bourdin