[Pw_forum] mpi error using pw.x

[Paolo Giannozzi]

Please tell us what is wrong and we will fix it.

Seriously: nobody can answer your question unless you specify, as a strict
minimum, input data, number of processors and type of parallelization that
trigger the error, and where the error occurs (at startup, later, in the
middle of the run, ...).

Paolo

On Sun, May 15, 2016 at 7:50 AM, Chong Wang <ch-wang at outlook.com> wrote:

> I compiled quantum espresso 5.4 with intel mpi and mkl 2016 update 3.
>
> However, when I ran pw.x the following errors were reported:
>
> ...
> MPIR_Get_contextid_sparse_group(1330): Too many communicators (0/16384
> free on this process; ignore_id=0)
> Fatal error in PMPI_Cart_sub: Other MPI error, error stack:
> PMPI_Cart_sub(242)...................: MPI_Cart_sub(comm=0xc400fcf3,
> remain_dims=0x7ffde1391dd8, comm_new=0x7ffde1391d30) failed
> PMPI_Cart_sub(178)...................:
> MPIR_Comm_split_impl(270)............:
> MPIR_Get_contextid_sparse_group(1330): Too many communicators (0/16384
> free on this process; ignore_id=0)
> Fatal error in PMPI_Cart_sub: Other MPI error, error stack:
> PMPI_Cart_sub(242)...................: MPI_Cart_sub(comm=0xc400fcf3,
> remain_dims=0x7ffc02ad7eb8, comm_new=0x7ffc02ad7e10) failed
> PMPI_Cart_sub(178)...................:
> MPIR_Comm_split_impl(270)............:
> MPIR_Get_contextid_sparse_group(1330): Too many communicators (0/16384
> free on this process; ignore_id=0)
> Fatal error in PMPI_Cart_sub: Other MPI error, error stack:
> PMPI_Cart_sub(242)...................: MPI_Cart_sub(comm=0xc400fcf3,
> remain_dims=0x7fffb24e60f8, comm_new=0x7fffb24e6050) failed
> PMPI_Cart_sub(178)...................:
> MPIR_Comm_split_impl(270)............:
> MPIR_Get_contextid_sparse_group(1330): Too many communicators (0/16384
> free on this process; ignore_id=0)
>
> I googled and found out this might be caused by hitting os limits of
> number of opened files. However, After I increased number of opened files
> per process from 1024 to 40960, the error persists.
>
>
> What's wrong here?
>
>
> Chong Wang
>
> Ph. D. candidate
>
> Institute for Advanced Study, Tsinghua University, Beijing, 100084
>
> _______________________________________________
> Pw_forum mailing list
> Pw_forum at pwscf.org
> http://pwscf.org/mailman/listinfo/pw_forum
>



-- 
Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20160515/6a48ce1c/attachment.html>