Hi George
I see the problem you pointed out, on binding the MPI types
to the specific (pointer) sizes in a heterogeneous environment.
However, I would MPI_Aint would be in trouble in heterogeneous
environments as well?
I mean, can we safely pass MPI_AINT back
and forth across 32-bit and 64-bit ma
The short answer is yes. However, this answer is wrong in a heterogeneous
environment. Suppose one rank is a 32 bits process, and the size_t is 4 bytes,
while another one is 64 bits with a size_t of 8 bytes. If you correlate the
sizeof(size_t) with the type you use for a communication, then one
Many thanks, George!
I passed MPI_AINT to the MPI functions,
along with the ptrdiff_t buffers,
and it worked right, at least for the modest
buffer sizes I tried.
I haven't got to size_t buffers yet, but if I understood right,
your suggestion for size_t buffers would be to
use MPI_UINT64_T as MPI
I see. Thanks!
After carefully reading the following FAQ item
http://www.open-mpi.org/faq/?category=rsh#ssh-keys ,
I realized that mpirun of Open MPI does not work in a simple "master to slaves"
way,
while "slaves to slaves" is also possible.
Therefore, a same private key with a passphrase o
Hi,
Am 14.03.2013 um 09:20 schrieb yumenlj:
> Hi, all
>
> I encountered a problem about mpirun and SSH when using Open MPI 1.7rc8.
>
> I have a 4-node cluster. This is the hostfile:
>
> [mpiuser@testnode11 openmpi-1.6.4]$ cat ~/work/hostfile
> testnode11
> testnode12
> testnode13
> testnode14
Hi, all
I encountered a problem about mpirun and SSH when using Open MPI 1.7rc8.
I have a 4-node cluster. This is the hostfile:
[mpiuser@testnode11 openmpi-1.6.4]$ cat ~/work/hostfile
testnode11
testnode12
testnode13
testnode14
I had configured SSH, copying ".ssh/id_rsa.pub" on testnode11
