On Jun 29, 2009, at 9:48 PM, Ashika Umanga Umagiliya wrote:
I am parallelizing tomography algorithm which takes about 5 hours
using single processor.
I want to gain full performance and should reduce the
computational time as short as possible.
I was wondering the SSh/RSH launcher could be
Thanks all for the answers,
I am parallelizing tomography algorithm which takes about 5 hours using
single processor.
I want to gain full performance and should reduce the computational
time as short as possible.
I was wondering the SSh/RSH launcher could be a performance issue?(I
am jus
On Jun 29, 2009, at 2:19 AM, vipin kumar wrote:
Q. Since I am using TCP/Ethernet I guess that MPI uses SSH/RSH to
communicate between peers.
Ans. May be you are right. I don't know exactly how peers
communicate in MPI environment, but I can say for sure that OpenMPI
uses rsh/ssh as one of
Hi,
Am 29.06.2009 um 08:08 schrieb jody:
Hi Umanga
Yes, ssh (or rsh) should be configured on every machine, and it must
be configured
in such a way that no passwords are needed to make a connection.
For example,
for passwordless connection using ssh i place every node's public
key into
th
Hi Ashika,
Q. Since I am using TCP/Ethernet I guess that MPI uses SSH/RSH to
communicate between peers.
Ans. May be you are right. I don't know exactly how peers communicate in MPI
environment, but I can say for sure that OpenMPI uses rsh/ssh as one of the
available launchers.
Q. And for that, e
Hi Umanga
Yes, ssh (or rsh) should be configured on every machine, and it must
be configured
in such a way that no passwords are needed to make a connection. For example,
for passwordless connection using ssh i place every node's public key into
the file ~/.ssh/authorized_keys of every node.
And,
Hi Vipin ,
Thanks alot for the reply.
I went through the FAQ and it also answered some of my questions.
But my problem is, since I am using TCP/Ethernet I guess that MPI uses
SSH/RSH to communicate between peers.
And for that, each peer should have the copy of the application right?
I use 1.2
Hi,
I am not expert, I am user like you but I think I can help you,
Q. After installing OpenMPI on each machine ,do i need to run a
service/daemon on each machine?
Ans. No, not at all, Open MPI takes care of that for you.
Q. How does peers in MPI environment communicate ?
Ans. Using Communicator(
