Hi Galen,
The GigE is on the ESB2. This lives on a 4GB/sec link to the MCH.
I believe we aren't really running close to the I/O bandwidth limit.
This MPI transfer uses both the ports as there are increment in RX and TX bytes
of both eth0 and eth1. But I am getting the same bandwidth with or without
using "--mca btl_tcp_if_include eth0" in the mpirun command line. Are we
missing something? Or I have to go for linux ethernet channel bonding?
Regards,
Jayanta
On Tue, 22 Aug 2006, Galen M. Shipman wrote:
Jayanta,
What is your bus on this machine? If it is PCI-X 133 you are going to be
limited, also memory bandwidth could also be the bottleneck.
Thanks,
Galen
Jayanta Roy wrote:
Hi,
In between two nodes I have dual Gigabit ethernet full duplex links. I was
doing benchmarking using non-blocking MPI send and receive. But I am
getting only speed corresponds to one Gigabit ethernet full duplex link
(< 2Gbps). I have checked using ifconfig, this transfer is using both the
ports, then why I am not getting full throughput from dual Gigabit
ethernet ports? Can anyone please help me in this?
Regards,
Jayanta
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jayanta Roy
National Centre for Radio Astrophysics | Phone : +91-20-25697107
Tata Institute of Fundamental Research | Fax : +91-20-25692149 Pune
University Campus, Pune 411 007 | e-mail : j...@ncra.tifr.res.in
India
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jayanta Roy
National Centre for Radio Astrophysics | Phone : +91-20-25697107
Tata Institute of Fundamental Research | Fax : +91-20-25692149 Pune
University Campus, Pune 411 007 | e-mail : j...@ncra.tifr.res.in
India
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
