On 17/04/2019 16.51, Jeff Squyres (jsquyres) via users wrote:
> On Apr 17, 2019, at 3:38 AM, Steffen Christgau
> wrote:
>> was configured with nothing more than a --prefix and
>> --enable-mpi-fortran. I checked for updates and it appears that there
>> was a
umber of processes.
Regards, Steffen
On 16/04/2019 19.48, Jeff Squyres (jsquyres) via users wrote:
> Steffen --
>
> What version of Open MPI are you using?
>
>
>> On Apr 16, 2019, at 9:21 AM, Steffen Christgau
>> wrote:
>>
>> Hi Tim,
>>
>>
Kind regards,
> Tim
>
>
> On Tue, 16 Apr 2019 at 19:01, Steffen Christgau
> mailto:christ...@cs.uni-potsdam.de>> wrote:
>
> Hi everyone,
>
> on my 2 cores/4 threads development platform I want to start programs
> via mpirun with over-subscriptio
Hi everyone,
on my 2 cores/4 threads development platform I want to start programs
via mpirun with over-subscription enabled by default. I have some
external packages which have tests that use more than 2 processes. They
all fail because Open MPI refuses them to run due to over-subscription.
I kno
On 03/09/2017 03:10 PM, Steffen Christgau wrote:
>
> Since you are using
> the unified model, you can omit the proposed exclusive lock (see above)
> as well.
To be fair, you have to be cautious when doing that - even in the
unified model. See example 11.7 in the MPI-3.1 standard. In
Hi Joseph,
in your code, you are updating the local buffer, which is also exposed
via the window, right after the lock_all call, but the stores
(baseptr[i] = 1000 + loffs++, let's call those the buffer
initialization) are may overwrite the outcome of other concurrent
operations, i.e. the accumulat
Hi Nathan,
On 23.09.2015 00:24, Nathan Hjelm wrote:
> I think I have the problem fixed. I went with a bitmap approach but I
> don't think that will scale well as node sizes increase since it
> requires n^2 bits to implement the post table. When I have time I will
> implement the approach used in o
Hi folks,
[the following discussion is based on v1.8.8]
suppose you have a MPI one-sided program using general active target
synchronization (GATS). In that program, a single origin process
performs two rounds of communication, i.e. two access epochs, to
different target process groups. The targe
Hi everybody,
in our group, we are currently working with a 2D CFD application that is
based on the simple von Neumann neighborhood. The 2D data grid is
partitioned into horizontal stripes such that each process calculates
such a stripe. After each iteration, a process exchanges the upper and
lowe
