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Politics : Formerly About Advanced Micro Devices
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To: Windsock who wrote (81640)12/1/1999 2:18:00 PM
From: Ali Chen  Read Replies (2) of 1572449
 
Winsuck, <SPECfp95 -> AMD-750 24.3 Intel-733 28.1
Whoa, what happened here !!
If you look at the AMD benchmark configurations you discover that an old driver was used, DX6.1A instead of the current DX7>

If you would have any idea about what you are talking
about, you would realize that Microsoft DirectX
drivers deal primarily with video (and sound)
application interfaces.

If you would be remotely familiar with the SPEC95
benchmark suite, you would notice that THE WHOLE
SET OF SPEC BENCHMARKS is simple CONSOLE
applications, or just a black "DOS-box" if you don't
know what the "console app" is. SPEC tests
perform PURE CALCULATIONS and do not use any
graphics calls to DX whatsoever. The SPEC
binaries are PRECOMPILED and no DX can "enable"
or "disable" any "fp extensions" at run time.

If you want to know as why Intel posted 28.1
in SPECfp95, then that is because they employed
NEW Intel Fortran/C compiler which uses Intel SSE
instructions. This compiler is a) not available
for general public until Feb-2000, and b)
presumably has problems since their binaries
sometimes give incorrect results in SPECs.
Therefore it is still a waporware from
practical standpoint.

Secondly, no one uses Intel compilers when
designing commercial software - most people
use Microsoft VC++, for system compatibility
reasons (remember your DXxx?).

Therefore, due to above reasons, the results
presented by AMD reflects practical performance
differences (or lack of them) given current
state of commercial software.

Therefore calm down and relax, or you can burn
down your last brain cell.
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