How much is a cray ??
Dennis Ellis
dre at sequoia.cray.com
Wed Jun 5 03:18:19 AEST 1991
In article <MCCALPIN.91Jun3142209 at pereland.cms.udel.edu> mccalpin at perelandra.cms.udel.edu (John D. McCalpin) writes:
>
>I have never seen a technical summary of the models XMS or Y/MP-EL.
>
>What are their vital statistics?
>
>If the XMS is really X/MP compatible, then I guess all I need is the
>clock speed. If not, what is the maximum sustainable memory bandwidth
>from main memory to vector registers?
>
The XMS is X-MP compatable. It runs UNICOS and all the applications
optimized for the X-MP. The general characteristics are:
55 ns clock
64-bit architecture
64 or 128 MB memory
80 ns DRAM
576 MB/s bandwidth
4 memory ports (2 read, 1 write, 1 i/o)
VME I/O subsystem
36 MFLOPS peak (100x100 is 9, 1000x1000 is 34)
>Ditto for the YMP/EL.
The YMP/EL has not, as of yet, been officially announced, but here are
some specs which have been provided in the past:
30 ns clock
64-bit vector, Y-MP campatable
256 to 1024 MB memory
1 GB/sec bandwidth per CPU
1 to 4 CPUs
4 memory ports
The rest will be available at time of announcement
>
>Thanks!
>
You're welcome!
--
*******************************************************************************
* Dennis Ellis (dre at sequoia.cray.com) * *
* Cray Research, Inc. * *
* Eagan, MN 55121 * All the normal stuff about opinions.. *
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