[rescue] R8k I2's
Joshua D Boyd
jdboyd at cs.millersville.edu
Wed Jan 8 00:06:29 CST 2003
On Wed, Jan 08, 2003 at 12:52:03AM -0500, Andrew Weiss wrote:
> On Tuesday, January 7, 2003, at 10:21 PM, Joshua D Boyd wrote:
> >OK, the R8k was a stop gap measure until the R10k was ready. SGI
> >needed a machine with really good floating point performance. So, they
> >introduced the R8k, which used some really cutting edge design ideas to
> >get this performance. One of the problems is that they traded integer
> >performance for floating point. So many applications that aren't
> >floating point heavy ran slower on this than on previous chips. Also,
> >the R8k had a deep pipeline and having to flush it was very expensive.
> MMM SGI's P4...
Err, wouldn't be the opposite of a P4? Instead of sacrificing FP for
int like the P4, it sacrificed int for float?
I'm not a big fan of x86, but I particularly find the P4 horrifying.
Joshua D. Boyd
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