Hi,
> Sorry if this has already been discussed, am new
> to this list.
Sorry for th elate reply, I was pretty stressed out due to the
Supercomputing Conference lately.
> I came across the ETH BTL from
> http://archiv.tu-chemnitz.de/pub/2006/0111/data/hoefler-CSR-06-06.pdf
> and was wondering w
Hi,
>Yes, the buffer was being re-used. No we didnt try to benchmark it with
>netpipe and other stuffs. But the program was pretty simple. Do you think,
>I need to test it with bigger chunks (>8MB) for communication.?
>We also tried manipulating eager_limit and min_rdma_sze, but no
Hello,
>The code was pretty simple. I was trying to send 8MB data from one
>rank to other in a loop(say 1000 iterations). And then i was taking the
>average of time taken and was calculating the bandwidth.
>
>The above logic i tried with both mpirun-with-mca-parameters and with
Hi Neeraj,
>Could anyone tell me the important tuning parameters in openmpi with
>IB interconnect? I tried setting eager_rdma, min_rdma_size,
>mpi_leave_pinned parameters from the mpirun command line on 38 nodes
>cluster (38*2 processors) but in vain. I found simple mpirun with
On Sat, Oct 06, 2007 at 09:29:25PM +0200, Jeff Squyres wrote:
> I'm CC'ing Torsten Hoefler -- he's the main developer of libnbc and
> will answer your question (he just realized he was not subscribed to
> this list :-) ).
thanks Jeff!
> On Oct 1, 2007, at 10:43
