Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

- "Ralph Castain" wrote: > Let me point out the obvious since this has plagued > us at LANL with regard to this concept. If a user > wants to do something different, all they have to > do is download and build their own copy of OMPI. One possibility may be to have OMPI

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Sep 5, 2009, at 3:00 AM, Jeff Squyres wrote: On Sep 4, 2009, at 5:47 PM, Sylvain Jeaugey wrote: Understood. So, let's say that we're only implementing a hurdle to discourage users from doing things wrong. I guess the efficiency of this will reside in the message displayed to the user

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Sep 4, 2009, at 2:34 PM, Sylvain Jeaugey wrote: hg -R "$srcdir" tip | head -1 | grep "^changeset:" | cut -d: -f3 Good catch; I changed it slightly from this to: hg -v -R "$srcdir" tip | grep ^changeset: | head -n 1 | cut -d: -f3 I put this on the trunk since I couldn't push to your bb

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

...@open-mpi.org > [mailto:devel-boun...@open-mpi.org] On Behalf Of Ralph Castain > Sent: Friday, September 04, 2009 8:28 AM > To: Open MPI Developers > Subject: Re: [OMPI devel] RFC - "system-wide-only" MCA parameters > > Just want to make this very clear, since other LANL people &g

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

Understood. So, let's say that we're only implementing a hurdle to discourage users from doing things wrong. I guess the efficiency of this will reside in the message displayed to the user ("You are about to break the entire machine and you will be fined if you try to circumvent this in any

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

Just want to make this very clear, since other LANL people are on this list. I am in no way saying that LANL users are ill-intentioned or deliberately attempting to circumvent system restrictions. See my other note for the most common scenarios that lead to this problem and you will see

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

I fear you all misunderstood me. This isn't a case of sabotage or nasty users, but simply people who do something that they don't realize can cause a problem. Our example is quite simple. We have IB network for MPI messages, and several Ethernet NICs that are dedicated to system-level

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Fri, 2009-09-04 at 07:50 -0600, Ralph Castain wrote: > Let me point out the obvious since this has plagued us at LANL with > regard to this concept. If a user wants to do something different, all > they have to do is download and build their own copy of OMPI. > > Amazingly enough, that is

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

Looks like users at LANL are not very nice ;) Indeed, this is no hard security. Only a way to prevent users from doing mistakes. We often give users special tuning for their application and when they see their application is going faster, they start messing with every parameter hoping that it

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

Hi, Ralph Castain wrote: Let me point out the obvious since this has plagued us at LANL with regard to this concept. If a user wants to do something different, all they have to do is download and build their own copy of OMPI. We are well aware of that. It is relatively easy for a user to

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

Let me point out the obvious since this has plagued us at LANL with regard to this concept. If a user wants to do something different, all they have to do is download and build their own copy of OMPI. Amazingly enough, that is exactly what they do. When we build our production versions, we

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Fri, 2009-09-04 at 13:55 +0200, Sylvain Jeaugey wrote: > On Fri, 4 Sep 2009, Jeff Squyres wrote: > > > I haven't looked at the code deeply, so forgive me if I'm parsing this > > wrong: > > is the code actually reading the file into one list and then moving the > > values to another list?

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Fri, 2009-09-04 at 13:34 +0200, Sylvain Jeaugey wrote: > On Fri, 4 Sep 2009, Jeff Squyres wrote: > > > -- > > *** Checking versions > > checking for SVN version... done > > checking Open MPI version... 1.4a1hgf11244ed72b5 > > up to changeset c4b117c5439b > > checking Open MPI release

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Fri, 4 Sep 2009, Jeff Squyres wrote: I haven't looked at the code deeply, so forgive me if I'm parsing this wrong: is the code actually reading the file into one list and then moving the values to another list? If so, that seems a little hackish. Can't it just read directly to the target

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Fri, 4 Sep 2009, Jeff Squyres wrote: -- *** Checking versions checking for SVN version... done checking Open MPI version... 1.4a1hgf11244ed72b5 up to changeset c4b117c5439b checking Open MPI release date... Unreleased developer copy checking Open MPI Subversion repository version...

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Fri, 2009-09-04 at 10:05 +0300, Jeff Squyres wrote: > On Sep 3, 2009, at 12:23 PM, Nadia Derbey wrote: > > > What: Define a way for the system administrator to prevent users from > > overwriting the default system-wide MCA parameters settings. > > > > In general, I think this is great

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Sep 3, 2009, at 12:23 PM, Nadia Derbey wrote: What: Define a way for the system administrator to prevent users from overwriting the default system-wide MCA parameters settings. In general, I think this is great stuff. I have a few nit picks. (BTW: you might want to run

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Sep 4, 2009, at 8:26 AM, Nadia Derbey wrote: > Can the file name ( openmpi-priv-mca-params.conf ) also be configurable ? No, it isn't, presently, but this can be changed if needed. If it's configurable, it must be configurable at configure time -- not run time -- otherwise, a user

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

On Thu, 2009-09-03 at 19:29 -0400, Graham, Richard L. wrote: > What happens if $sysconfdir/openmpi-priv-mca-params.conf is missing ? If it is missing, everything works as today: any parameter declared in $sysconfdir/openmpi-mca-params.conf is considered as system-wide and can be overwritten as

Re: [OMPI devel] RFC - "system-wide-only" MCA parameters

What happens if $sysconfdir/openmpi-priv-mca-params.conf is missing ? Can the file name ( openmpi-priv-mca-params.conf ) also be configurable ? Rich On 9/3/09 5:23 AM, "Nadia Derbey" wrote: What: Define a way for the system administrator to prevent users from