Implementation Status
Known Problems, Compatibility Issues, and Open Issues
| Known Problems
| pack_external
unpack_external | long double is not
properly packed/unpacked in architecture neutral format, because of
the diversity of long double formats -- Intel uses 96bits, IBM/Power
uses a pair of doubles, and so on.
| | Compatibility Issues
| pack_external
unpack_external | long data are packed
into 64bit whereas MPI-2 specifies they are in 32bits. This
non-standard behavior is for 64bit machines. Setting environment
variable _YAMPI_COMMON_PACK_SIZE makes it to the standard
behavior.
| | MPI_Cancel | Cancelation is a non-local operation, opposed to
the MPI specification in which MPI_Wait after MPI_Cancel is a local
operation (MPI1 §3.8). GridMPI may waits at MPI_Wait for
checking with the peer receiver process of a send.
| | Open Issues
| |
|
See MPI Implementation Status for
support levels of MPI-2 features.
See Checkpoint/Restart
Implementation Status for support levels of checkpointing feature.
($Date: 2006-06-07 15:56:42 $)
|