[OMPI devel] Regarding Connection establishment in OpenMPI

2011-08-22 Thread Bhargava Ramu Kavati
Hi, I am trying to explore the details of connection establishment in OpenMPI using libibcm/librdmacm. In the code, I could not find how OpenMPI app is getting service-id/lid of remote node to which it wants to connect. Also, I did not see any query in the code related to service_record_get from

Re: [OMPI devel] Regarding Connection establishment in OpenMPI (Jeff Squyres)

2011-08-24 Thread Bhargava Ramu Kavati
> From: Jeff Squyres > Subject: Re: [OMPI devel] Regarding Connection establishment in >OpenMPI > To: Open MPI Developers > Message-ID: <2399c470-7f91-49d4-a463-a8994691a...@cisco.com> > Content-Type: text/plain; charset=us-ascii > > On Aug 22, 2011, at 9:35 AM

Re: [OMPI devel] Regarding Connection establishment in OpenMPI (Jeff Squyres)

2011-09-06 Thread Bhargava Ramu Kavati
B" (out of band) module uses TCP sockets. This > can use traditional ethernet or an emulated IP layer, such as IPoIB. > > > On Aug 24, 2011, at 11:58 AM, Bhargava Ramu Kavati wrote: > > > Hi Jeff, > > Thank you for your prompt response. I have a query related to MPI_INIT

[OMPI devel] Regarding OpenMPI example apps

2011-10-11 Thread Bhargava Ramu Kavati
Hi, I am trying to run the example applications in OpenMPI using the command "mpirun --prefix /usr/local/ --mca btl_openib_cpc_include rdmacm -np 4 -H hello_c" But I am getting the below warning "WARNING: No preset parameters were found for the device that Open MPI detected:" Also at the end (j

[OMPI devel] MPI tool test OFED Stack

2011-10-11 Thread Bhargava Ramu Kavati
Hi, I am presently using Intel's MPI benchmark (IMB) tool to test OFED Stack. Is there any other MPI tool which runs on top of OpenMPI. Thanks & Regards, Ramu

[OMPI devel] running OpenMPI examples on two hosts

2011-10-12 Thread Bhargava Ramu Kavati
Hi, I am using OpenMPI version 1.4.3 on CentOS5.4 machines (connected back to back using Infiniband HW) I am trying to run example apps in OpenMPI using the below command. "*mpirun --prefix /usr/local/ -np 2 --mca btl openib --mca btl_openib_cpc_include rdmacm -hostfile tmp_host_file ring_c*" Her