Re: [OMPI users] A daemon on node cl231 failed to start as expected

Hi, Am 23.08.2014 um 16:09 schrieb Pengcheng Wang: > I need to run a single driver program that only require one proc with the > command mpirun -np 1 ./app or ./app. But it will schedule the launch of other > executable files including parallel and sequential computing. So I require > more

[OMPI users] A daemon on node cl231 failed to start as expected

Hi everybody, I need to run a single driver program that only require one proc with the command *mpirun -np 1 ./app *or *./app*. But it will schedule the launch of other executable files including parallel and sequential computing. So I require more than one proc to run it. It can be run smoothly

Re: [OMPI users] Does multiple Irecv means concurrent receiving ?

On Aug 20, 2014, at 3:37 AM, Zhang,Lei(Ecom) wrote: > I have a performance problem with receiving. In a single master thread, I > made several Irecv calls: > > Irecv(buf1, ..., tag, ANY_SOURCE, COMM_WORLD) > Irecv(buf2, ..., tag, ANY_SOURCE, COMM_WORLD) > ... >

Re: [OMPI users] Best way to communicate a 2d array with Java binding

El 22/08/14 21:31, Saliya Ekanayake escribió: My apologies, I think I wasn't clear on my question. My question was, given that copying of data is necessary in both approaches (either by the system with arrays or by programmer with buffers), is there a foreseeable performance difference in