[gmx-developers] new 64-bit int support and MPI
erik.lindahl at scilifelab.se
Tue Dec 24 13:42:12 CET 2013
Hm - good point. However, can’t we simply ask the MPI library to transport 8 chars instead in that case? (assuming that the endian is the same on all nodes in an MPI job)
On 24 Dec 2013, at 13:34, Mark Abraham <mark.j.abraham at gmail.com> wrote:
> I'm happy with the recent change to requiring 64-bit integers, but I note that this means we have required that the MPI library support the MPI_INT64_T datatype from MPI 2.2. AFAIK that's probably OK in practice, but I thought it worth mentioning / discussing.
> We should update the install guide and add a CMake test for its support, however, since there will still be plenty of people with earlier non-compliant MPI libraries. I imagine CentOS will take about 5 years to update that far...
> Gromacs Developers mailing list
> * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-developers_List before posting!
> * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
> * For (un)subscribe requests visit
> https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-developers or send a mail to gmx-developers-request at gromacs.org.
More information about the gromacs.org_gmx-developers