Peter,
On Dec 19, 2009, at 22:20 , Peter St. John wrote:
Haakon,
What I saw (in a recent Slashdot, which I ought to be able to find)
was the idea that an Intel compiler disables it's own highest levels
of optimizations if it detects that the host processor is not Intel.
The complaint is based on that I believe.
FWIW, I imagine that if an automobile engine detected poor octane in
the fuel, it might throttle down the maximum speed of the car; but
if it did so after detecting a competitor's brand of gasoline, it
could be considered anti-competitive. But of course IMNAL or however
we announce we ain't lawyers so CGS (cum grano salis).
Peter
Intel's compiler generates code that will not run on AMD CPUs (i.e.
non GenuineIntel) if an instruction-set higher than SSE2 is selected.
This issue is covered by the referenced complaints elsewhere. I know
this issue pretty well, as I wrote a piece of software used by Scali/
Platform MPI which reverted the Intel compiler's check for
GenuineIntel, which transparently allowed MPI programs to run on AMD
CPUs with SSE3/SSSE3 instruction set enabled.
Claim 20 in the complaints is not related to this, but
_interoperability_ between GPUs and Intel CPUs. That is what I tried
to get a better understanding of. I have received insightful comments
around this issue off-list.
Thanks anyway, Håkon
On Thu, Dec 17, 2009 at 3:33 AM, Håkon Bugge <[email protected]>
wrote:
In http://www.ftc.gov/os/adjpro/d9341/091216intelcmpt.pdf, there are
allegations against Intel, such as "20. Intel’s efforts to deny
interoperability between competitors’ (e.g., Nvidia, AMD, and Via)
GPUs and Intel’s newest CPUs".
I was unaware of this. Anyone know what kind of interoperability we
are talking about here?
Håkon
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Mvh.,
Håkon Bugge
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