I recently noticed the following error when running a Python program I'm
developing that repeatedly performs GPU-to-GPU data transfers via OpenMPI:
The call to cuIpcGetMemHandle failed. This means the GPU RDMA protocol
cannot be used.
cuIpcGetMemHandle return value: 1
address: 0x602e75000
Ch
Can you reproduce the error in a small example?
Also, try using "use mpi" instead of "include 'mpif.h'", and see if that turns
up any errors.
> On Sep 2, 2015, at 12:13 PM, Diego Avesani wrote:
>
> Dear Gilles, Dear all,
> I have found the error. Some CPU has no element to share. It was a my
Dear Gilles, Dear all,
I have found the error. Some CPU has no element to share. It was a my error.
Now I have another one:
*Fatal error in MPI_Isend: Invalid communicator, error stack:*
*MPI_Isend(158): MPI_Isend(buf=0x137b7b4, count=1, INVALID DATATYPE,
dest=0, tag=0, comm=0x0, request=0x7fffe8
Diego,
about MPI_Allreduce, you should use MPI_IN_PLACE if you want the same
buffer in send and recv
about the stack, I notice comm is NULL which is a bit surprising...
at first glance, type creation looks good.
that being said, you do not check MPIdata%iErr is MPI_SUCCESS after each
MPI call.
I
Dear all,
I have notice small difference between OPEN-MPI and intel MPI.
For example in MPI_ALLREDUCE in intel MPI is not allowed to use the same
variable in send and receiving Buff.
I have written my code in OPEN-MPI, but unfortunately I have to run in on a
intel-MPI cluster.
Now I have the foll
