Re: [OMPI devel] Memory performance with Bcast

2019-03-22 Thread marcin.krotkiewski
t, Josh On Thu, Mar 21, 2019 at 5:01 AM marcin.krotkiewski mailto:marcin.krotkiew...@gmail.com>> wrote: Thanks, George! So, the function you mentioned is used when I turn off HCOLL and use OpenMPI's tuned coll instead. That helps a lot. Another thin

Re: [OMPI devel] Memory performance with Bcast

2019-03-22 Thread marcin.krotkiewski
the most efficient way to broadcast a message in an IB network. Hope this helps. Best, Josh On Thu, Mar 21, 2019 at 5:01 AM marcin.krotkiewski mailto:marcin.krotkiew...@gmail.com>> wrote: Thanks, George! So, the function you mentioned is used when I tur

Re: [OMPI devel] Memory performance with Bcast

2019-03-21 Thread marcin.krotkiewski
and search for the ompi_coll_tuned_bcast_intra_dec_fixed function in coll_tuned_decision_fixed.c.   George. On Wed, Mar 20, 2019 at 4:53 AM marcin.krotkiewski mailto:marcin.krotkiew...@gmail.com>> wrote: Hi! I'm wondering about the details of Bcast implementation in OpenMPI. I'm specifically

[OMPI devel] Memory performance with Bcast

2019-03-20 Thread marcin.krotkiewski
Hi! I'm wondering about the details of Bcast implementation in OpenMPI. I'm specifically interested in IB interconnects, but information about other architectures (and OpenMPI in general) would also be very useful. I am working with a code, which sends the same  (large) message to a bunch of

Re: [OMPI devel] bug in MPI_Comm_accept?

2017-04-04 Thread marcin.krotkiewski
I functionality considered less important than the core? Should I file a bug report? Thanks! Marcin Krotkiewski On 09/16/2015 04:06 PM, marcin.krotkiewski wrote: I have run into a freeze / potential bug when using MPI_Comm_accept in a simple client / server implementation. I have attached two simp

Re: [OMPI devel] bug in MPI_Comm_accept?

2017-04-04 Thread marcin.krotkiewski
I functionality considered less important than the core? Should I file a bug report? Thanks! Marcin Krotkiewski On 09/16/2015 04:06 PM, marcin.krotkiewski wrote: I have run into a freeze / potential bug when using MPI_Comm_accept in a simple client / server implementation. I have attached two simp

Re: [OMPI devel] bug in MPI_Comm_accept?

2017-04-04 Thread marcin.krotkiewski
rtant than the core? Should I file a bug report? Thanks! Marcin Krotkiewski On 09/16/2015 04:06 PM, marcin.krotkiewski wrote: I have run into a freeze / potential bug when using MPI_Comm_accept in a simple client / server implementation. I have attached two simplest programs I could produce: