diff options
Diffstat (limited to 'CMakeLists.txt')
| -rw-r--r-- | CMakeLists.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 0302f4f..40f8eb2 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -569,6 +569,16 @@ if (HDF5_ENABLE_PARALLEL) Parallel writes of filtered data will be disabled.") set (PARALLEL_FILTERED_WRITES OFF) endif () + + # Used by big I/O feature + set (LARGE_PARALLEL_IO ON) + CHECK_SYMBOL_EXISTS (MPI_Get_elements_x "${MPI_C_INCLUDE_DIRS}/mpi.h" H5_HAVE_MPI_Get_elements_x) + CHECK_SYMBOL_EXISTS (MPI_Type_size_x "${MPI_C_INCLUDE_DIRS}/mpi.h" H5_HAVE_MPI_Type_size_x) + if (NOT H5_HAVE_MPI_Get_elements_x OR NOT H5_HAVE_MPI_Type_size_x) + message (WARNING "The MPI_Get_elements_x and/or MPI_Type_size_x functions could not be located. + Reading/Writing >2GB of data in a single parallel I/O operation will be disabled.") + set (LARGE_PARALLEL_IO OFF) + endif () else () message (STATUS "Parallel libraries not found") endif () |