[OMPI devel] Upcoming nightly tarball URL changes

2018-02-26 Thread Barrett, Brian via devel
On Sunday, March 18th, the Open MPI team is going to make a change in where nightly tarballs are stored that will likely impact MTT test configuration. If you have an automated system (including MTT) that fetches nightly tarballs, you will likely need to make a change in the next two weeks to a

Re: [OMPI devel] [PATCH v5 0/4] vm: add a syscall to map a process memory into a pipe

2018-02-26 Thread Nathan Hjelm
All MPI implementations have support for using CMA to transfer data between local processes. The performance is fairly good (not as good as XPMEM) but the interface limits what we can do with to remote process memory (no atomics). I have not heard about this new proposal. What is the benefit of

Re: [OMPI devel] [PATCH v5 0/4] vm: add a syscall to map a process memory into a pipe

2018-02-26 Thread Pavel Emelyanov
On 02/21/2018 03:44 AM, Andrew Morton wrote: > On Tue, 9 Jan 2018 08:30:49 +0200 Mike Rapoport > wrote: > >> This patches introduces new process_vmsplice system call that combines >> functionality of process_vm_read and vmsplice. > > All seems fairly strightforward. The big question is: do we