[mpich-discuss] MPICH2's predefined reduce operation can not support quadruple precision

[Jilong Yin]

Hello,
  MPICH2's  predefined reduce operation  seems it can not support quadruple
precision.  I used the attached  program to test this. And got the following
error message,
Fatal error in PMPI_Reduce: Invalid MPI_Op, error stack:
PMPI_Reduce(1198).......: MPI_Reduce(sbuf=0012FF00, rbuf=0012FF10, count=1,
dtyp
e=0x4c00102b, MPI_SUM, root=0, MPI_COMM_WORLD) failed
MPIR_SUM_check_dtype(97): MPI_Op MPI_SUM operation not defined for this
datatype

  If so, is there any plan to support this ?
 Thank you.
YIN
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/mpich-discuss/attachments/20100512/8a9fa3d6/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: test.for
Type: application/octet-stream
Size: 1353 bytes
Desc: not available
URL: <http://lists.mcs.anl.gov/pipermail/mpich-discuss/attachments/20100512/8a9fa3d6/attachment.obj>