Re: vDSP FFT on PPC
Re: vDSP FFT on PPC
- Subject: Re: vDSP FFT on PPC
- From: Ian Kemmish <email@hidden>
- Date: Sun, 14 Mar 2010 19:33:06 +0000
On 14 Mar 2010, at 16:25, "Richard Furse"
<email@hidden> wrote:
The crashes are intermittent, so it might also be just that I'm
breaching a
thread safety constraint that I'm not aware of (this is a
multithreaded
app). The application appears to be rock solid on Windows and i386
Mac, and
the crashes are always in the IDFT operation on PPC Mac.
Any help appreciated...
Remember that the big thing which will cause exceptions on a PowerPC
but not on an Intel is misaligned data fetches.
Anything going anywhere near the PowerPC vector unit needs to be on 16
byte boundaries. Normally malloc() and friends will handle all of
that for you, but it may be that you're doing something which spoils
that somehow. Five minutes with a debugger will show whether or not
this is the problem.
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Ian Kemmish 18 Durham Close, Biggleswade, Beds
SG18 8HZ
email@hidden Tel: +44 1767 601361 Mob: +44 7952
854387
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