[Beowulf] nearly future of Larrabee
kus at free.net
Fri Aug 21 13:53:16 EDT 2009
AFAIK Larrabee-based product(s) will appear soon - at begin of 2010.
Unfortunatley I didn't see enough appropriate technical information.
What new is known from SIGGRAPH 2009 ?
There was 2 ideas of Larrabee-based hardware a) Whole computers on
b) GPGPU card.
Recently I didn't see any words about Larrabee-based servers - only
about graphical cards.
If Larrabee will work as CPU - then I beleive that linux kernel
developers will work in this direction.
But I didn't find anything about Larrabee in 2.6.
Q1. Is there the plans to build Larrabee-based motherboards (in
particular in 2010) ?
If Larrabee will be in the form of graphical card (the most probable
Q2. What will be the interface - one slot PCI-E v.2 x16 ?
It's known now, that DP will be hardware supported and (AFAIK) that
512-bit operands (i.e. 8 DP words) will be supported in ISA.
Q3. Does it means that Larrabee will give essential speedup also on
relative short vectors ?
And is there some preliminary articles w/estimation of Larrabee DP
performance ? One of declared potential advantages of Larrabee is
support by compilers.
There is now PGI Fortran w/NVidia GPGPU extensions. PGI
Accelerator-2010 will include support of CUDA on the base of
OpenMP-like comments to compiler. So
Q4. Is there some rumours about direct Larrabee support w/Intel ifort
or PGI compilers in 2010 ?
(By "direct" I mean automatic compiler vectorization of "pure"
Fortran/C source, maximim w/additional commemts).
Q5. How much may costs Larrabee-based hardware in 2010 ? I hope it'll
be lower $10000. Any more exact predictions ?
Computer Assistance to Chemical Research Center
Zelinsky Institute of Organic Chemistry RAS
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