[petsc-users] petsc4py and MPI.COMM_SELF.Spawn

[Rodrigo Felicio]

Sorry, I spoke too soon...
Reversing the order between mpi4py and petsc4py imports does work *only* on the master code side, but not on the child process code side. In that case, the program hangs after the children processes are fired up and fails the same way as reported before...
cheers
Rodrigo
________________________________________
From: petsc-users-bounces at mcs.anl.gov [petsc-users-bounces at mcs.anl.gov] on behalf of Rodrigo Felicio [Rodrigo.Felicio at iongeo.com]
Sent: Wednesday, March 01, 2017 2:31 PM
To: Barry Smith
Cc: petsc-users at mcs.anl.gov
Subject: Re: [petsc-users] petsc4py and MPI.COMM_SELF.Spawn

I thought I had tried that as well with no success before, but this time it worked, despite some persistent error msgs related to PMI_finalize:

time mpirun -n 1 python dyn_mem_ex.py
proc 2 of 4 proc 3 of 4
proc 1 of 4
proc 0 of 4

proc 1 of 4, Adim=[10]
proc 2 of 4, Adim=[10]
proc 0 of 4, Adim=[10]
proc 3 of 4, Adim=[10]
Adata = [ 0.  1.  2.  3.  4.  5.  6.  7.  8.  9.]
Adata = [ 0.  1.  2.  3.  4.  5.  6.  7.  8.  9.]Adata = [ 0.  1.  2.  3.  4.  5.  6.  7.  8.  9.]

Adata = [ 0.  1.  2.  3.  4.  5.  6.  7.  8.  9.]
3.14160098692
2.65258238441e-06
[cli_0]: write_line error; fd=12 buf=:cmd=finalize
:
system msg for write_line failure : Bad file descriptor
Fatal error in MPI_Finalize: Other MPI error, error stack:
MPI_Finalize(281).....: MPI_Finalize failed
MPI_Finalize(209).....:
MPID_Finalize(133)....:
MPIDI_PG_Finalize(106): PMI_Finalize failed, error -1

real    0m0.586s
user    0m0.536s
sys     0m0.613s

Best,
Rodrigo

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