Is it possible to sort the container by value? In below example by "member" Or also other keys like: Sort by "member" typedef multi_index_container< Element_Entry, indexed_by< ordered_non_unique< composite_key< Element_Entry, member, member, member, member > >, ordered_unique< member > >

ElementRecord;

Regards, UJ

Hello, On 14 May 2013 17:10, Yeni Lora wrote:

I have a problem with my code I using mpi. The error is with mca_btl_tcp_frag_recv, and I don´t know what mean... The error complete

[../../../../../../ompi/mca/btl/tcp/btl_tcp_frag.c:216:mca_btl_tcp_frag_recv] mca_btl_tcp_frag_recv: readv failed: Connection timed out (110)

and

[btl_tcp_frag.c:216:mca_btl_tcp_frag_recv] mca_btl_tcp_frag_recv: readv failed: Connection reset by peer (104)

You need to post more details about the context, otherwise all one can say is that there was some error establishing a TCP connection (one host tried to connect to another, and this one did not respond before time run out). It appears that you are using OpenMPI and the problem originates in the OpenMPI layer -it's apparently not a Boost::MPI coding problem- so you might get more help if you ask on the OpenMPI users mailing list. Regards, Riccardo -- Riccardo Murri http://www.gc3.uzh.ch/people/rm Grid Computing Competence Centre University of Zurich Winterthurerstrasse 190, CH-8057 Zürich (Switzerland) Tel: +41 44 635 4222 Fax: +41 44 635 6888