Re: [OMPI users] [EXTERNAL] Re: MPI One-Sided Communication, indexed datatype and segmentation fault.

Hi Brian, I filed a bug several months ago about derived datatypes in RMA: https://svn.open-mpi.org/trac/ompi/ticket/2656 Could this be the same issue? ~Jim. On 6/6/12 1:35 PM, Barrett, Brian W wrote: Ziaul - You're right, I totally misread the code, sorry about that. What version of

Re: [OMPI users] [EXTERNAL] Re: MPI One-Sided Communication, indexed datatype and segmentation fault.

Hello Brian, You do not have to be sorry. my code was not that clear. My Open MPI version is 1.6, the network is Ethernet. About the MPI_Alloc_mem, I tried with malloc also, but was getting the same seg-fault. Thanks, Ziaul On Wed, Jun 6, 2012 at 1:35 PM, Barrett, Brian W

Re: [OMPI users] [EXTERNAL] Re: MPI One-Sided Communication, indexed datatype and segmentation fault.

Ziaul - You're right, I totally misread the code, sorry about that. What version of Open MPI are you using and over what network? As an aside, there's no point in using MPI_ALLOC_MEM for the displacement arrays. MPI_ALLOC_MEM is really only advantageous for allocating communication buffers.