do you use IB as a transport? max message size in IB/RDMA is limited to
2G, but OMPI 1.7 splits large buffers during RDMA into 2G chunks.
On Wed, Jul 17, 2013 at 11:51 AM, mohammad assadsolimani <
m.assadsolim...@jesus.ch> wrote:
>
> Dear all,
>
> I do my PhD in physics and use a program, whi
On Mon, 15 Jul 2013, Elken, Tom wrote:
...
Hope these anecdotes are relevant to Open MPI users considering knem.
...
Brilliantly useful, thanks! It certainly looks like it may be greatly
significant for some applications. Worth looking into.
All the best,
Mark
--
---
I did this too, FYI.
template
tmp::enable_if::value>
send(
const T *buf, size_t count, int dest, int tag, MPI_Comm comm) {
int imax = std::numeric_limits::max();
MPI_Datatype dtype = datatype();
while (count > 0) {
int c = imax;
if ((size_t)c > count) c = count;
count -= c;
Dear all,
I do my PhD in physics and use a program, which uses openmpi for
a sophisticated calculation.
But there is a Problem with "max. message size ". That is limited to ~2GB.
Someone suggested that I have to use chunks i.e. I have to
disassemble the massages
in smaller massages. That
