[mvapich-discuss] MPI_BCAST() message max size

[Devendar Bureddy]

Hi Qiyue Lu

MVAPICH2 should handle this scenario. I just tried simple 1GB count * 8
bytes and it worked for me. Can you provide more details on your
configuration and mvapich2 version details?  Is it possible to share your
reproducer program?

-Devendar


On Tue, Jul 16, 2013 at 1:27 AM, Lu Qiyue <luqiyue at gmail.com> wrote:

> Dear All:
>
> When I am using MPI_BCAST(buffer, count, datatype, root, comm) to
> broadcast a very large data stored in buffer, a Seg error occurs.
>
> if assume I have enough memory, I am wondering, is there any maximum limit
> on buffer size? In my case, count* 8 bytes (double precision datatype) goes
> up to 6 GB. Can this be allowed in mvapich2?
>
> Thanks
>
> Qiyue Lu
>
> _______________________________________________
> mvapich-discuss mailing list
> mvapich-discuss at cse.ohio-state.edu
> http://mail.cse.ohio-state.edu/mailman/listinfo/mvapich-discuss
>
>


-- 
Devendar
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.cse.ohio-state.edu/pipermail/mvapich-discuss/attachments/20130716/d3d79e64/attachment.html