Re: [Discuss-gnuradio] Using gnu-radio for project

[Eric Blossom]

On Tue, Sep 30, 2008 at 02:03:14PM -0400, Philip Balister wrote:
> > This is great.  What we've been thinking about is building a library
> > of SIMD accelerated primitives, along the lines of Intel's Integrated
> > Performance Primitives.  The crucial differences would be: free
> > software (GPLv3); support for SSE, SSE2, SSE3, Altivec and Cell SPE
> > instruction sets.
> 
> Do you mind adding NEON to this list?  NEON is a SIMD unit on ARM
> Cortex-A8 processors. Information on NEON instructions is at
> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0204h/Bcfjicfj.html.
> Sorry it si the superseded link, I'm too lazy to find the current one
> :)


NEON's fine by me, as long as you're doing the work :-)


> > Our working title for this is the "Generic Performance Primtives" (GPP).
> >
> > One unresolved issue is what code to start with.  We need a framework
> > that provides for reference implementations, QA, testing all argument
> > alignments, correctness, performance, etc; runtime dispatch based on
> > the equivalent of cpuid; can be built as both shared and static
> > libraries (need static on the SPE).
> >
> > The basic idea (for the user visible routines) would be to start with
> > the well thought out API described in Volume 1 (Signal Processing) of
> > the IPP docs, peforming a s/ipp/gpp/g.
> >
> >  
> > http://softwarecommunity.intel.com/isn/downloads/softwareproducts/pdfs/346499.pdf
> >
> >  
> > http://softwarecommunity.intel.com/isn/downloads/softwareproducts/pdfs/346532_userguide_win_ia32.pdf
> >
> >
> > Two possible starting points are:
> >
> >  liboil      http://liboil.sourceforge.net    (currently x86, x86-64 and 
> > PPC)
> 
> liboil is used by a number of desktop programs, spending time on this
> would be a win for me :)

The issues I see with it is that there's currently no support for
complex-<anything> in the framework, and that the intel function naming
convention doesn't map well (at all?) into the liboil framework.

Eric