Re: [OMPI devel] [EXTERNAL] RE: How to display device selection or routing info

2021-08-20 Thread Baker, Lawrence M via devel
Florent, I agree with your description for the information I have already found through the use of -mca btl_base_verbose 10. I am requesting some way of obtaining the device selection and configuration information without the rest of the tracing. As far as routing, I was not referring to the O

Re: [OMPI devel] [EXTERNAL] RE: How to display device selection or routing info

2021-08-20 Thread George Bosilca via devel
Larry, There is no simple answer to your question as it depends on many, software and hardware, factors. A user selectable PML (our high level messaging layer) component will decide what protocol to be used to move the data around using what hardware. At this level you have a choice between OB1 (w

Re: [OMPI devel] [EXTERNAL] RE: How to display device selection or routing info

2021-08-20 Thread Baker, Lawrence M via devel
George, Thanks. I Google'd "openmpi ompi_display_comm" and found this discussion https://github.com/open-mpi/ompi/issues/30, which looks promising. Alas, the OMPI I'm using at the moment is 3.1.4 from the OpenHPC CentOS 7 collection, so it produced nothing. It looks like I'll have to wait fo