[petsc-users] Strange crash on VecScatter

[Gong Ding]

Hi,
I meet some very strange problem on AIX6.1 with IBM POE.

When I start the simulation with 3 or more processors, the following error will occure.
Fatal Error:  at line 71 in /gpfs1/cogenda/cogenda/packages/petsc/include/../src/vec/vec/utils/vpscat.h
One or two processors are ok. 

However, when I start my code with -vecscatter_window to avoid the MPI_Startall_irecv call of line 71, everything is ok.

Some information:
The petsc is configured with
--known-level1-dcache-size=32768 --known-level1-dcache-linesize=32 --known-level1-dcache-assoc=2 --known-memcmp-ok=1 --known-endian=big --known-sizeof-char=1 
--known-sizeof-void-p=8 --known-sizeof-short=2 --known-sizeof-int=4 --known-sizeof-long=8 --known-sizeof-long-long=8 --known-sizeof-float=4 --known-sizeof-double=8 --known-sizeof-size_t=8 --known-bits-per-byte=8 --known-sizeof-MPI_Comm=4 --known-sizeof-MPI_Fint=4 --known-mpi-long-double=1 --download-f-blas-lapack=1 
--download-mumps=1 --download-blacs=1 --download-parmetis=1 --download-scalapack=1 --download-superlu=1 --with-debugging=0 --with-clanguage=cxx 
--with-cc=\"mpcc_r -q64\" --with-fc=\"mpxlf_r -q64\" --with-cxx=\"mpCC_r -q64\" --with-batch=1 --with-shared-libraries=1 --known-mpi-shared-libraries=1 
--with-x=0 --with-pic=1

And I add 
#ifndef PETSC_HAVE_MPI_MISSING_TYPESIZE
#define PETSC_HAVE_MPI_MISSING_TYPESIZE
#endif
to petscconf.h for avoiding some mpi compile problem.

Does anyone meet this problem?

If I have to use this workaround, how to I add -vecscatter_window in the code instead in command line?

Gong Ding