
\noindent
{\bf
National Advanced Systems AS/91X0
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\noindent
{\bf
Integrated Vector Processor
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{\bf Architecture:}
The NAS 91X0 is the top-end system available from National Advanced
Systems.  It uses the System/370 Extended Architecture for scalar
operations.

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AS/9140/50 are uniprocessors with 48 Mbytes of central memory.\\
AS/9160 is a uniprocessor with 64 Mbytes of central memory.\\
AS/9170/80 are dyadic processors with 64 Mbytes of central memory.
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Each processor has a high-speed cache for scalar operands.
The cache is system controlled.

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Vector Processing Facility (VPF): Optional feature to the 91X0.
46 vector instructions are added for the VPF.
32-bit operands in the VPF are treated as 64-bit operands.

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Pipelined vector processor using memory to memory operations
(no vector registers).

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Fixed stride addressing on vectors is allowed as well
as indirect addressing or mask control.

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Based on the Hitachi S-9 plus IAP.

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{\bf Configuration:}
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Closed water/air cooled.

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{\bf Software:}
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MVS/XA, VM/XA, VM/SP High-Performance Option

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{\bf Languages:}
Assembler H Version 2

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The Fortran compiler will automatically vectorize existing codes
using Pacific Sierra's VAST.

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{\bf Status:}
Rough cost is \$3M.

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\noindent
{\bf Contact:}
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Claud Stoudmeyer\\
National Advanced Systems\\
800 East Middlefield Rd.\\
PO Box 7300\\
Mountain View, CA 94039\\
415-962-6100\\

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