I doubt you'd see anything other than the straight MHz gain
when using a Pentium Pro chip over a Pentium for a DOS 4GW game.
Only when Windows NT becomes the standard operating system for
PCs will people be able to take advantage of multi threaded games
which will run on multiple processors. Simulations would probably
suit a threaded programming environment because you could have
seperate threads for, say, the different aspects of the physics
model, graphics engine and AI.
Personally, I think the immediate future lies in 3D graphics
accelerator boards because:
- they will provided much better performance increase per $
than additional (or faster) processors.
- Games programmers are only now seriously considering Windows 95
as their operating system of choice.
Fraser
Do Pentium Pro CPUs help DOS racing and flight sims?
Posters discussed whether the Pentium Pro would speed up demanding sims such as IndyCar Racing II. Most said its gains appear mainly in 32-bit code, and benchmarks showed 16-bit code running poorly. The thread also covered Windows 95 versus OS/2 and NT, early 3D cards such as the 3D Blaster and PowerVR, and Microsoft's OEM licensing.
hardware: PC/graphics
Automated summary.
: >Hi sim folks:
: > Has anybody actually tried a Pentium Pro with max res and detail EF2K,
: >Indycar II, Descent, or any other demanding sim? If so, did you see any
: >advantages?
: I doubt you'd see anything other than the straight MHz gain
: when using a Pentium Pro chip over a Pentium for a DOS 4GW game.
: Only when Windows NT becomes the standard operating system for
: PCs will people be able to take advantage of multi threaded games
: which will run on multiple processors. Simulations would probably
: suit a threaded programming environment because you could have
: seperate threads for, say, the different aspects of the physics
: model, graphics engine and AI.
: Personally, I think the immediate future lies in 3D graphics
: accelerator boards because:
: - they will provided much better performance increase per $
: than additional (or faster) processors.
: - Games programmers are only now seriously considering Windows 95
: as their operating system of choice.
: Fraser
I don't agree with you there! The Pentium pro is optimised for running 32 bit
code and a dos extender, such as DOS4GW (?) allows the processor to run 32 bit
code under dos, therefore as far as I know, the user would see a dramatic
increase in speed when running these games on a Pentium Pro.
Cheers, Jonathan
PS. I agree with the 3d graphics board bit though!!!!
--
________________________________________________________________________
/ \
| Sir Jonathan Dyson - ICL Servers and Networks Division |
| "Think cheese, think peas......think CHEESY-PEAS!" |
\________________________________________________________________________/
> Everybody knows the Pro isn't optimized for 16 bit applications.
>Changing the value of the SEG registers cripples it. But I am told that
>apps for DOS extenders, I think the most popular is called DOS4GW, can
>take advantage of a "flat" 32 bit environment. And the newest Univbe is
>also a 32 bit utility.
No, you are wrong, changing the segment registers has got nothing to
do with it's speed disadvantage, that's way too simplistic, plus it's
wrong.
The problem with the PPro is that it cannot handle mixed instructions,
where some of the code is using 32-bit operands while other code is
using 8 or 16-bit operands. You can continue to use 64K segments till
the cows come home, and the PPro will run just as fast within those
segments as any other sized segment; you just have to make sure that
you don't mix your operands up, because that causes dependencies that
the PPro doesn't want to superscale on. Of course, the fact that you
are using 64K segments means that you are by default using 16-bit
memory pointer references, therefore you must use 16-bit registers for
these pointers. So you might end up with mixed cases if a 16-bit
memory pointer reference follows a 32-bit operand reference, or
vice-versa.
Well, ever since the 486, all x86's have had internal caches. That's
nothing new or different in a PPro. The only difference is that the
caches have been growing and growing with every new family member.
Don't get your hopes up. The ideal game platform of the future is
Windows 95 not Windows NT. Microsoft's DirectX API extensions
(previously known as WinG in Windows 3.1) are a much more viable
direction for game research than SMP.
DirectX is only available for Windows 95 (and possibly a retrofit to
Windows 3.1), but it isn't available for Windows NT, and likely it
never will be available for it. DirectX goes against every philosophy
in the NT operating system, because it starts touching the hardware
much more directly than is allowable in NT. NT has the HAL layer which
is king, and nothing can get around it unless Microsoft specifically
decrees that the philosophy of NT has changed, and direct
(non-portable) accesses to the hardware will now be allowed.
Forget SMP multiprocessing (a la NT), you'll get much better results
with DirectX. That's because the processors employed by DirectX will
be much more specialized than two or more general CPU's, which SMP is
all about.
Yousuf Khan
Quoted text (16 lines)
>>The thought of unleashing multiple Pentium Pros on my favorite flying and >>racing sims, as Kelly Bundy would say, "wobbles the mind". >Don't get your hopes up. The ideal game platform of the future is >Windows 95 not Windows NT. Microsoft's DirectX API extensions >(previously known as WinG in Windows 3.1) are a much more viable >direction for game research than SMP. >DirectX is only available for Windows 95 (and possibly a retrofit to >Windows 3.1), but it isn't available for Windows NT, and likely it >never will be available for it. DirectX goes against every philosophy >in the NT operating system, because it starts touching the hardware >much more directly than is allowable in NT. NT has the HAL layer which >is king, and nothing can get around it unless Microsoft specifically >decrees that the philosophy of NT has changed, and direct >(non-portable) accesses to the hardware will now be allowed.Quoted text (15 lines)
> : >Hi sim folks: > : > Has anybody actually tried a Pentium Pro with max res and detail EF2K, > : >Indycar II, Descent, or any other demanding sim? If so, did you see any > : >advantages? > : I doubt you'd see anything other than the straight MHz gain > : when using a Pentium Pro chip over a Pentium for a DOS 4GW game. > : Only when Windows NT becomes the standard operating system for > : PCs will people be able to take advantage of multi threaded games > : which will run on multiple processors. Simulations would probably > : suit a threaded programming environment because you could have > : seperate threads for, say, the different aspects of the physics > : model, graphics engine and AI.Only with NT? what a load of crap. There already are multithreaded games forQuoted text (50 lines)
>> : >Hi sim folks: >> : > Has anybody actually tried a Pentium Pro with max res and detail EF2K, >> : >Indycar II, Descent, or any other demanding sim? If so, did you see any >> : >advantages? >> : I doubt you'd see anything other than the straight MHz gain >> : when using a Pentium Pro chip over a Pentium for a DOS 4GW game. >> : Only when Windows NT becomes the standard operating system for >> : PCs will people be able to take advantage of multi threaded games >> : which will run on multiple processors. Simulations would probably >> : suit a threaded programming environment because you could have >> : seperate threads for, say, the different aspects of the physics >> : model, graphics engine and AI.Only with NT? what a load of crap. There already are multithreaded games for >OS/2 Warp. You don't need multiple processors to take advantage of multithreading >> : Personally, I think the immediate future lies in 3D graphics >> : accelerator boards because: >> : - they will provided much better performance increase per $ >> : than additional (or faster) processors. >Correct. >> : - Games programmers are only now seriously considering Windows 95 >> : as their operating system of choice. >Are they? Most games I've seen so far reboot win95 back to dos mode. >Feature of WCIV: it's runs in win95 after rebooting to dos. >(really it says on the box) well I'm impressed. >> : Fraser >> I don't agree with you there! The Pentium pro is optimised for running 32 bit >> code and a dos extender, such as DOS4GW (?) allows the processor to run 32 bit >> code under dos, therefore as far as I know, the user would see a dramatic >> increase in speed when running these games on a Pentium Pro. >> Not sure about what performance a PPro give with DOS4GW games. But one thing I do >know is that the performance gain of win95 on a Ppro is miserable. >There is just too much critical code of win95 still 16bit. (Ppro is a nice way to test >if a OS is really 32 bit :-) >Now if you use OS/2 (which is fully 32 bit since Warp) a Ppro will MORE than DOUBLE your >performance. (when #Mhz of Ppro and pentium are the same) >Colorworks (could compare that with a more powerful Photostyler for OS/2) works 120% faster >on a Ppro. >Greetings, >Marc de VriesQuoted text (62 lines)
> >> : >Hi sim folks: > >> : > Has anybody actually tried a Pentium Pro with max res and detail EF2K, > >> : >Indycar II, Descent, or any other demanding sim? If so, did you see any > >> : >advantages? > >> : I doubt you'd see anything other than the straight MHz gain > >> : when using a Pentium Pro chip over a Pentium for a DOS 4GW game. > >> : Only when Windows NT becomes the standard operating system for > >> : PCs will people be able to take advantage of multi threaded games > >> : which will run on multiple processors. Simulations would probably > >> : suit a threaded programming environment because you could have > >> : seperate threads for, say, the different aspects of the physics > >> : model, graphics engine and AI.Only with NT? what a load of crap. There already are multithreaded games for > >OS/2 Warp. You don't need multiple processors to take advantage of multithreading > >> : Personally, I think the immediate future lies in 3D graphics > >> : accelerator boards because: > >> : - they will provided much better performance increase per $ > >> : than additional (or faster) processors. > >Correct. > >> : - Games programmers are only now seriously considering Windows 95 > >> : as their operating system of choice. > >Are they? Most games I've seen so far reboot win95 back to dos mode. > >Feature of WCIV: it's runs in win95 after rebooting to dos. > >(really it says on the box) well I'm impressed. > >> : Fraser > >> I don't agree with you there! The Pentium pro is optimised for running 32 bit > >> code and a dos extender, such as DOS4GW (?) allows the processor to run 32 bit > >> code under dos, therefore as far as I know, the user would see a dramatic > >> increase in speed when running these games on a Pentium Pro. > >> Not sure about what performance a PPro give with DOS4GW games. But one thing I do > >know is that the performance gain of win95 on a Ppro is miserable. > >There is just too much critical code of win95 still 16bit. (Ppro is a nice way to test > >if a OS is really 32 bit :-) > >Now if you use OS/2 (which is fully 32 bit since Warp) a Ppro will MORE than DOUBLE your > >performance. (when #Mhz of Ppro and pentium are the same) > >Colorworks (could compare that with a more powerful Photostyler for OS/2) works 120% faster > >on a Ppro. > >Greetings, > >Marc de Vries > Instead of guessing lets talk reality. I have a Micron Pentium Pro 200 with > 64 meg of memory, fast SCSI-2, and an Imagine-128 video card. The horsepower > alone makes everything run faster including Win'95. This is the only system > I've ever seen that can run Origins ***Mage full screen SVGA with no hesitation. > All of the racing sims run ultra smooth and seem not to strain the system at all. > As for operating systems let's get real. Win95 is about 40% faster on this machine > than a run of the mill Pentium 166 using IDE. For the OS/2 zealot, anytime OS/2 > runs dos code it runs it in 16 bit mode NOT able to multithread anything in dos. > This is reality, I do OS/2 support so don't even try the Bill G. minion of hell > flame on me! It also runs 16 bit code when running Win programs. Maybe Merlin > may fix this. If you plan on running dos games under OS/2, don't. Do yourself a favor and just boot dos. This way you won't run into the sound card driver andThe difference in the Pentium Pro processor is that unlike the previous
Intel x86 architecture processors, the Pentium Pro processor incorporates
an L2 (second level cache) into the primary processor package. This means
that you have the L1 cache which is internal to the processor itself--like
with the i486-class processors, and a much larger L2 cache also included
in the same PGA package. That's why there's two cavities in the Pentium
Pro processor PGA package--one cavity holds the processor and its L1
cache, and the other cavity holds the large L2 cache.
After reading the lastest CGW article on the "3D Blaster", I'm not
so sure the performance improvement with the 3D graphics card will
be as great as the marketing ad portrays it to be.
Regards,
Gary Eastham
> Has anybody actually tried a Pentium Pro with max res and detail EF2K,
>Indycar II, Descent, or any other demanding sim? If so, did you see any
>advantages?
Most of the Pros aren't shipping. I ordered mine quite some time ago
and it has still not shipped. I understand that 150MHz ones are now
going out slowly, but the 200MHz I ordered is still not really available.
Correct. At least Papyrus's stuff is 32-bit.
Precisely what I expect to find. (Quite an educated estimate, but an
estimate nonetheless.)
Actually most MP Pentiums have a cache per processor too. (In fact, all
of the ones I've ever looked at, which is quite a few now, have separate
caches.)
Yes, because there are always synchronizatino primitives that do consume
cpu time. On an MP, you don't usually care, since you get a lot of help
from the other cpu(s), but on a uni you do notice.
I wish we had them ported to Solaris/SPARC and threaded, since we could
then run them on our quad-processor RISC boxes. Or heck, in this case,
I'd even run on an SGI box too!
--
Brian Wong Systems Engineering Group (Servers)
That's because the 3D Blaster is ***- I suspect that Creative
Labs decided to try and grab market share by releasing one of
the first 3D cards targetted specifically at the home market
(the PCI version isn't out yet). The Diamond Edge isn't too
hot either. However, I've seen a demo of Rave Racer running
on the new PowerVR 3D chipset (which is designed to complement
your existing graphics card, I believe), and it was AMAZING
(30 fps at 640*480 on a P-133). In addition, it's going to
be much cheaper than either the 3D Blaster or the Edge and
offer an unbelievable performance increase per $. This time
next year there will be many more 3D cards on the market
and I suspect many people who like fast SVGA games will buy
them.
Fraser
: > may fix this. If you plan on running dos games under OS/2, don't. Do
: > yourself a favor and just boot dos. This way you won't run into the
: > sound card driver and....
: Correct but this is really the same as with
: Win95 since it reboots back to dos also
: (MSDOS mode they call it...heh heh, some people are even fooled by it.
: amazing isn't it?)
It is because Microsoft is bent on taking over the world. I am totally
convinced now that they misslead the public and hardware vendors about the
performance of their products. I tried to purchase a computer from a good
company, DELL, the other day. I told them I did not want Windows95, but
rather OS/2. They told me they couldn't do it. What?!! I even told them
to just leave out the hard drive if that could help. Nope, they wouldn't
budge. They said I must by a computer with Microsoft Windows95 (and of
course all the thousands of dollars worth of bullshit 'extras' like
spiderman's cartoon writer, etc...). In effect, I must by a computer that
is advertised as a top of the line Pentium 133 (and pay big$$) when the os
only lets it run as fast as a Pentium 75 in dos!!! Arrgg!! My question is
how much is Microsoft paying the vendors to include _only_ their OS?? It
really sucks. Certainly there are laws against this. Sorry this is off
topic/thread, but your comment unleashed my pent up anger and distrust to
these jackasses.
I'll try not to let this happen again.
Matt
There's an item on the PowerVR 3D in the march 96 edition of Edge (UK)
magazine. Certainly looks like it could be a winner and it's backed by
NEC and Videologic. Namco have announced an alliance with NEC and have
begun converting several of their arcade titles, including Rave Racer,
Tekken and Air Combat 22 (ready for release in May). Videologic claim
these titles actually surpass their arcade predecessors.
Where did you manage to see the demo of Rave Racer running on the
PowerVR ? Did you see any of the other software ? What was it like ?
Tia
Jeremy
a) I can fully understand why DELL and many other companies supply
all of their PC with one standard OS (such as Win 95) - they certainly
will have some sort of deal with Microsoft which ensures a very low
cost per copy of the OS. If you want OS/2, go out and buy it yourself!!
b) I have a DELL P-133. I assume it's a clock doubled 66 Mhz processor
and given that it has 512 Kb pipeline burst cache it runs at a damned
good speed under DOS. Why do you believe a P-133 will only run as
fast as a P-75 under DOS???????
Fraser
Quoted text (31 lines)
>>It is because Microsoft is bent on taking over the world. I am totally >>convinced now that they misslead the public and hardware vendors about the >>performance of their products. I tried to purchase a computer from a good >>company, DELL, the other day. I told them I did not want Windows95, but >>rather OS/2. They told me they couldn't do it. What?!! I even told them >>to just leave out the hard drive if that could help. Nope, they wouldn't >>budge. They said I must by a computer with Microsoft Windows95 (and of >>course all the thousands of dollars worth of bullshit 'extras' like >>spiderman's cartoon writer, etc...). In effect, I must by a computer that >>is advertised as a top of the line Pentium 133 (and pay big$$) when the os >>only lets it run as fast as a Pentium 75 in dos!!! Arrgg!! My question is >>how much is Microsoft paying the vendors to include _only_ their OS?? It >>really sucks. Certainly there are laws against this. Sorry this is off >>topic/thread, but your comment unleashed my pent up anger and distrust to >>these jackasses. >>I'll try not to let this happen again. >>Matt >a) I can fully understand why DELL and many other companies supply >all of their PC with one standard OS (such as Win 95) - they certainly >will have some sort of deal with Microsoft which ensures a very low >cost per copy of the OS. If you want OS/2, go out and buy it yourself!! >b) I have a DELL P-133. I assume it's a clock doubled 66 Mhz processor >and given that it has 512 Kb pipeline burst cache it runs at a damned >good speed under DOS. Why do you believe a P-133 will only run as >fast as a P-75 under DOS??????? >FraserQuoted text (7 lines)
>> Has anybody actually tried a Pentium Pro with max res and detail EF2K, >>Indycar II, Descent, or any other demanding sim? If so, did you see any >>advantages? >Most of the Pros aren't shipping. I ordered mine quite some time ago >and it has still not shipped. I understand that 150MHz ones are now >going out slowly, but the 200MHz I ordered is still not really available.: With the volume of machines that Dell moves, it would be a nightmare to
: have to support multiple OS's...
Not a good reason. Besides, there wouldn't be that many 'extra' things to
load if it were OS/2.:) It only takes them a minute to install(Especially
for the pros that have done it more than once.). Besides when you are
buying a (near?) top of the line piece of equipment for say $2k or $3K,
why shouldn't a company offer a few options. Shoot, it's not brain
surgery to keep a tab and install an OS as they are sold. It is the
almighty dollar/pound/yen... that's driving this insanity. Remember when
AT&T had the same idea? (Personally, I'm sorry AT&T got split, they
actually had a good quality product at a reasonable price, and did not try
to fool the public too much.)
: FWIW, my P100 ran DOS apps faster than a friend's P75... and when I
: upgraded to a 133 it got faster still. It does seem slower running DOS
: apps from a DOS PROMPT in W95, but in DOS mode it rips.
Yea, that's exactly what I was talking about. In fact, 'real' DOS mode
is pretty darn close to _5 times_ faster than Windows DOS prompt. Why
should I have to deal with/pay for that if I already own an older DOS
version that works better for what I'm gonna use it for?
Matt
snipped
: b) I have a DELL P-133. I assume it's a clock doubled 66 Mhz processor
: and given that it has 512 Kb pipeline burst cache it runs at a damned
: good speed under DOS. Why do you believe a P-133 will only run as
: fast as a P-75 under DOS???????
Actually, I meant the P133 under Windows95 runs as fast as a P75 under DOS.
Sorry, 'bout that.
Matt
[snip]
I don't understand the above comment. What is it about Windows 95 which means a P133 runs
like a P75 in DOS????
Mike.
----------------------------
Voice: +44 (0)113 297 9797
Fax: +44 (0)113 297 9798
Snail: BJSS, Albion Tower, 11 Albion Street, Leeds, LS1 5ES, England
Quoted text (24 lines)
>: With the volume of machines that Dell moves, it would be a nightmare to >: have to support multiple OS's... >Not a good reason. Besides, there wouldn't be that many 'extra' things to >load if it were OS/2.:) It only takes them a minute to install(Especially >for the pros that have done it more than once.). Besides when you are >buying a (near?) top of the line piece of equipment for say $2k or $3K, >why shouldn't a company offer a few options. Shoot, it's not brain >surgery to keep a tab and install an OS as they are sold. It is the >almighty dollar/pound/yen... that's driving this insanity. Remember when >AT&T had the same idea? (Personally, I'm sorry AT&T got split, they >actually had a good quality product at a reasonable price, and did not try >to fool the public too much.) >: FWIW, my P100 ran DOS apps faster than a friend's P75... and when I >: upgraded to a 133 it got faster still. It does seem slower running DOS >: apps from a DOS PROMPT in W95, but in DOS mode it rips. >Yea, that's exactly what I was talking about. In fact, 'real' DOS mode >is pretty darn close to _5 times_ faster than Windows DOS prompt. Why >should I have to deal with/pay for that if I already own an older DOS >version that works better for what I'm gonna use it for? >MattI read somewhere that MS signs contracts with vendors like this:
MS lets the company use its operating system not by copy sold, but PCs
sold. So if Dell sells a PC with another OS on it, they have to pay for
TWO OSs.
Gregory Fung
Vancouver, B.C., Canada
Papyrus Racing Organization 95 Champion
IICC3 Ground Effects/Rebel Alliance Lola-Ford-Firestone
>MS lets the company use its operating system not by copy sold, but PCs
>sold. So if Dell sells a PC with another OS on it, they have to pay for
>TWO OSs.
This is true, and supposedly outlawed by last years consent decree
with the "Justice" department. The decree had no teeth, though, and
most observers agree Microsoft got off with a hand-slapping.
Joe
>32 bit apps screamed on the P6, but 16 bit apps slowed to a crawl
>(approximately equal to a 486DX-33). With this in mind, I'd opt for the P5
>166 for flight sims and other games.
AJ,
Thanks for the info! This just confirms what a guy at the computer shop
had told me.
Dominic Tuso
Vancouver, Washington, USA


































