Performance analysis #76
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| elseif(OC_INSTRUMENTATION STREQUAL "none") | ||
| #Do nothing | ||
| else() | ||
| #error? |
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Should at least have a message output here.
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Added a WARNING here. We can upgrade this to a FATAL_ERROR if you think that is appropriate.
| if(NOT SLEPC_FOUND) | ||
| SET(SLEPC_FWD_DEPS IRON) | ||
| foreach(dependency IN_LIST HYPRE;MUMPS;PARMETIS;PASTIX;PTSCOTCH;SCALAPACK;SUITESPARSE;SUPERLU;SUPERLU_DIST;SUNDIALS) | ||
| if(PETSC_WITH_${dependency} AND OC_USE_${dependency}) |
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Why is this not SLEPC specific?
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SLEPc works through PETSc. You can't have it without having PETSc as well. Hence the reference to PETSc for the SLEPc dependencies.
CMakeScripts/OCInstrumentation.cmake
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| endif() | ||
| endif() | ||
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| message(STATUS "DEBUG: OC_INSTRUMENTATION = ${OC_INSTRUMENTATION}") |
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If these are debug messages they should by default be hidden.
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I've commented these out. However, what we should have is a better solution to debugging CMake. I would advocate having a CMakeScript (OCUtilities.cmake or OCDebug.cmake or something) that doesn't rely on to many OC variables so that it can be included at the top of all of the CMake scripts that we have. We could then have something like in this file
function (ocdebug message)
if(DEFINED OC_DEBUG_CMAKE)
message(STATUS "DEBUG: ${message}"
endif()
endfunction()
Then, in all the CMake scripts we would have something like
include(OCDebug.cmake)
and
ocdebug("Debug output information")
This would unify all the messaged and messagev functions scattered throughout the scripts. We could then leave them uncommented as they wouldn't produce output unless somebody did a
cmake -DOC_DEBUG_CMAKE=1
or something.
| # see if we can create an MPI executable. | ||
| set(regular_compiler_worked 0) | ||
| if (NOT MPI_${lang}_LIBRARIES OR NOT MPI_${lang}_INCLUDE_PATH) | ||
| if (NOT MPI_${lang}_FOUND) |
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I'm hoping the full implications of this change are understood.
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Yes, we are trying to find an MPI compiler. This is done via an interrogate_mpi_compiler call which sets the MPI_${lang}_FOUND variable based directly on the LIBRARIES and INCLUDE_PATH variables as above.
CMakeModules/FindMPI.cmake
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| macro(messagev TEXT) | ||
| if (NOT WIN32) #The backslashes in the path elements break cmake :-( | ||
| #message(STATUS "FindMPI: ${TEXT}") | ||
| #message(STATUS "FindMPId: ${TEXT}") |
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Fat fingers? Removed.
| set(PATHOPT ) | ||
| # Start with MPI_HOME from the environment, of given | ||
| set(_MPI_PREFIX_PATH $ENV{MPI_HOME}) | ||
| #set(_MPI_PREFIX_PATH $ENV{MPI_HOME}) |
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Is there a comment as to why this is not desired?
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I've added a comment. Basically some MPI environs set this when they are installed and this can then clash with the MPI environ specified via -DMPI=...
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Changes to the CMake scripts to allow for performance analysis.