Xing Feng,
A more focused (and certainly more detailed) analysis of the cost of
different algorithms for collective communications can be found in [1], and
more recently in [2].
George.
[1]
http://icl.cs.utk.edu/projectsfiles/rib/pubs/Pjesivac-Grbovic_PMEO-PDS05.pdf
[2] https://www.cs.utexas.e
Dear Xing Feng,
there are different algorithms to implement collective communication
patterns. Next to general Big-O complexity the concrete complexity
also depends on the network topology, message length, etc..
Therefore many MPI implementations switch between different algorithms
depending on t
Hi, every one,
I am working with open-mpi. When I tried to analyse performance of my
programs, I find it is hard to understand the communication complexity of
MPI routines.
I have found some page on Internet such as
http://stackoverflow.com/questions/10625643/mpi-communication-complexity
This i
On Jun 29, 2010, at 9:35 PM, 王睿 wrote:
> Thanks for the feedback. More below:
>
> Is there any MPI implementions which meet the following requirements:
>
> 1, it doesn't terminate the whole job when a node is dead?
>
> 2, it allows the spare node to replace the dead node and take over the work
Thanks for the feedback. More below:
Is there any MPI implementions which meet the following requirements:
1, it doesn't terminate the whole job when a node is dead?
2, it allows the spare node to replace the dead node and take over the work
of the dead node?
As far as I know, FT-MPI meets the
Thanks for the feedback.
Rui
2010/6/29 Changsheng Jiang
> I am a learner, too, please correct me.
>
> Changsheng Jiang
>
>
> On Tue, Jun 29, 2010 at 15:44, 王睿 wrote:
>
>> Hi, all
>>
>> I'm now learning MPI, but I'm not clear with the follow
On Jun 29, 2010, at 3:44 AM, 王睿 wrote:
> 1, suppose a MPI program involves several nodes, if one node dead, will the
> program terminate?
Open MPI will terminate the whole job, yes.
> 2, Is there any possibility to extend or shrink the size of MPI communicator
> size? If so, we can use spare
I am a learner, too, please correct me.
Changsheng Jiang
On Tue, Jun 29, 2010 at 15:44, 王睿 wrote:
> Hi, all
>
> I'm now learning MPI, but I'm not clear with the following questions,
>
> 1, suppose a MPI program involves several nodes, if one
Hi, all
I'm now learning MPI, but I'm not clear with the following questions,
1, suppose a MPI program involves several nodes, if one node dead, will the
program terminate?
2, Is there any possibility to extend or shrink the size of MPI communicator
size? If so, we can use spare node to replace
