Hi Jeff,
thanks for the material!
Meanwhile, I tested sending INT_MAX elements
of an int64_t pair and Open MPI seems to be
fine with sending 2^31 * (2 * 8) bytes.
-Alex
---
Googletest-Testcase:
TEST(MPImaxBufferSize, maxSendBufferSizeInt) {
MPI_Datat
Check out the BigMPI project for details on this topic.
Some (many?) MPI implementations still have internal limitations that
prevent one from sending more than 2 gigabytes using MPI datatypes. You can
use the BigMPI tests to identify these.
https://github.com/jeffhammond/BigMPI
https://github.co
Hi Gus,
thanks a lot for the intro, that helps.
Best regards,
Alex
On 05.06.16 18:30, Gustavo Correa wrote:
On Jun 5, 2016, at 12:03 PM, Alexander Droste wrote:
Hi everyone,
I'd like to know what the maximum buffer size
for sends/receives is. Besides the count being limited
to INT_MAX, how
On Jun 5, 2016, at 12:03 PM, Alexander Droste wrote:
> Hi everyone,
>
> I'd like to know what the maximum buffer size
> for sends/receives is. Besides the count being limited
> to INT_MAX, how is the max buffer size limited?
>
> Best regards,
> Alex
>
Hi Alexander
As far as I know, the usua
