[Openmp-dev] [cfe-dev] CMAKE_INSTALL_PREFIX vs -fopenmp and clang search library search path

[Hal Finkel]

----- Original Message -----
> From: "Jonathan L Peyton" <jonathan.l.peyton at intel.com>
> To: "Hal Finkel" <hfinkel at anl.gov>, "C Bergström" <cbergstrom at pathscale.com>
> Cc: openmp-dev at dcs-maillist2.engr.illinois.edu, "cfe-dev" <cfe-dev at cs.uiuc.edu>, openmp-dev-bounces at cs.uiuc.edu
> Sent: Monday, May 18, 2015 11:28:17 AM
> Subject: RE: [Openmp-dev] [cfe-dev] CMAKE_INSTALL_PREFIX vs -fopenmp and clang search library search path
> 
> There seems to be two choices:
> -lllomp (libllomp.so) and -lomp (libomp.so)
> 
> Have we settled on libomp.so?

Yes, I think so. That's Chris's suggestion, and it makes sense to me.

 -Hal

> 
> -- Johnny
> 
> -----Original Message-----
> From: openmp-dev-bounces at cs.uiuc.edu
> [mailto:openmp-dev-bounces at cs.uiuc.edu] On Behalf Of Hal Finkel
> Sent: Saturday, May 16, 2015 11:10 AM
> To: C Bergström
> Cc: openmp-dev at dcs-maillist2.engr.illinois.edu; cfe-dev;
> openmp-dev-bounces at cs.uiuc.edu
> Subject: Re: [Openmp-dev] [cfe-dev] CMAKE_INSTALL_PREFIX vs -fopenmp
> and clang search library search path
> 
> Indeed, no one else seems to be using libomp.so (*), so we're free to
> take it. Let's do that.
> 
>  -Hal
> 
> (*) Searching for "libomp.so" on Google gives only a page of results:
> There is a library on HP-UX, but it seems to live on
> /usr/lib/hpux{32,64} on those systems, and this is not a concern
> regardless. The first hit, amusingly enough, is my BG/Q makefile for
> our OpenMP library. There's essentially nothing else.
> 
> ----- Original Message -----
> > From: "C Bergström" <cbergstrom at pathscale.com>
> > To: "Carlo Bertolli" <cbertol at us.ibm.com>
> > Cc: openmp-dev at dcs-maillist2.engr.illinois.edu, "cfe-dev"
> > <cfe-dev at cs.uiuc.edu>, openmp-dev-bounces at cs.uiuc.edu
> > Sent: Saturday, May 16, 2015 10:08:14 AM
> > Subject: Re: [cfe-dev] [Openmp-dev] CMAKE_INSTALL_PREFIX vs
> > -fopenmp
> > and clang search library search path
> > 
> > 
> > 
> > oh this wouldn't be confusing at all....
> > 
> > 
> > 
> > On Sat, May 16, 2015 at 9:59 PM, Carlo Bertolli <
> > cbertol at us.ibm.com
> > > wrote:
> > 
> > 
> > 
> > 
> > 
> > HI Chris,
> > 
> > That's clear now, thanks.
> > 
> > -- Carlo
> > 
> > Inactive hide details for Chris Lattner ---05/16/2015 12:36:22
> > AM--->
> > On May 15, 2015, at 4:55 PM, Carlo Bertolli <cbertol at us.iChris
> > Lattner
> > ---05/16/2015 12:36:22 AM---> On May 15, 2015, at 4:55 PM, Carlo
> > Bertolli < cbertol at us.ibm.com > wrote: >
> > 
> > From: Chris Lattner < clattner at apple.com >
> > To: Carlo Bertolli/Watson/IBM at IBMUS
> > Cc: cfe-dev < cfe-dev at cs.uiuc.edu >, "Peyton, Jonathan L" <
> > jonathan.l.peyton at intel.com >, "
> > openmp-dev at dcs-maillist2.engr.illinois.edu " <
> > openmp-dev at dcs-maillist2.engr.illinois.edu >,
> > openmp-dev-bounces at cs.uiuc.edu
> > Date: 05/16/2015 12:36 AM
> > Subject: Re: [Openmp-dev] [cfe-dev] CMAKE_INSTALL_PREFIX vs
> > -fopenmp
> > and clang search library search path
> > 
> > 
> > 
> > 
> > 
> > 
> > On May 15, 2015, at 4:55 PM, Carlo Bertolli < cbertol at us.ibm.com >
> > wrote:
> > 
> > Hi Chris I sent an e-mail a while ago but I made a mistake when
> > transforming it from daily digest into a single e-mail and you may
> > not
> > have seen it. lomp is already used for the "lightweight OpenMP"
> > (LOMP) implementation, which is for PPC64, BlueGene, and Z-series
> > systems. Here are some references to it:
> > http://cscads.rice.edu/workshops/summer-2012/slides/performance-tools/
> > OpenMP-for-exascale-CScADS.pdf
> > https://www.alcf.anl.gov/files/BlueGeneQ_Optimization.pdf One
> > important note is that LOMP supports the KMP* interface and can be
> > (and currently is) used as a OpenMP library for LLVM. Unless you
> > feel
> > strongly for re-using the name, I would rather prefer LLOMP to
> > avoid
> > confusion.
> > 
> > Sure, but “lomp” is presumably actually linked with the command
> > line
> > flag -llomp today. The “-l” part is an aspect of the compiler
> > interface to specify a library to link, not part of the name of the
> > library.
> > 
> > -Chris
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________
> > Openmp-dev mailing list
> > Openmp-dev at dcs-maillist2.engr.illinois.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/openmp-dev
> > 
> > 
> > 
> > _______________________________________________
> > cfe-dev mailing list
> > cfe-dev at cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
> > 
> 
> --
> Hal Finkel
> Assistant Computational Scientist
> Leadership Computing Facility
> Argonne National Laboratory
> 
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> 

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory