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b1514ea26d
New feature.
Description:
There is some discussion among the SAF team as to whether it is better
to use MPI derived types for raw data transfers (thus needing a
MPI_File_set_view() call), or whether it is better to use a sequence of
low-level MPI types (i.e. MPI_BYTE) for the raw data transfer.
Solution:
Added an in internal flag to determine whether derived types are preferred
(the default), or whether they should be avoided. An environment variable
("HDF5_MPI_PREFER_DERIVED_TYPES") can be set by users to control whether MPI
types should be used or not. Set the environment variable to "0" (i.e.:
'setenv HDF5_MPI_PREFER_DERIVED_TYPES 0' to avoid using MPI derived types.
Platforms tested:
IRIX64 6.5 (modi4) w/parallel
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| .. | ||
| HISTORY.txt | ||
| INSTALL | ||
| INSTALL_codewarrior.txt | ||
| INSTALL_parallel | ||
| INSTALL_TFLOPS | ||
| INSTALL_VFL | ||
| INSTALL_Windows_withcpp.txt | ||
| INSTALL_Windows.txt | ||
| RELEASE.txt | ||