[petsc-dev] [GPU] Cusp default configuration is broken

Leoni, Massimiliano Massimiliano.Leoni at Rolls-Royce.com
Fri Jul 24 10:31:44 CDT 2015

Sure, here it is!

> -----Original Message-----
> From: Karl Rupp [mailto:rupp at iue.tuwien.ac.at]
> Sent: 24 July 2015 15:28
> To: Leoni, Massimiliano; petsc-dev at mcs.anl.gov
> Subject: Re: [petsc-dev] [GPU] Cusp default configuration is broken
> Hi Massimiliano,
>  > I came across this [alleged] bug when installing petsc with GPU support:
> > if I run configure with option -with-cusp-include=... it complains I
> > should also set -with-cusp-lib, but cusp is a pure template library,
> > so there is no static or shared library to link against.
> Correct. The sample file in config/examples/arch-cuda-double.py uses --
> with-cusp-dir for exactly that reason.
> > As an alternative, it offers to specify -with-cusp-dir=CUSP_DIR , and
> > then it tries to guess the include directory as $CUSP_DIR/include, which
> > is wrong as in current CUSP version the directory containing the headers
> > is $CUSP_DIR/cusp.
> >
> > An easy workaround is to go to $CUSP_DIR and create a symbolic link
> > $CUSP_DIR/include that points to $CUSP_DIR/cusp, but I think the
> > configure script should be corrected [one might not always have
> > permission to create this link.
> Thanks for the feedback, I will look into this. We have other libraries
> in use which use a similar folder organization as CUSP, so I suspect
> something system-specific. Could you send us configure.log for the case
> where you configure using -with-cusp-dir=CUSP_DIR?
> Thanks and best regards,
> Karli

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