DariusD
Argh , R4 sources have a bug , I was in hurry replacing the asi files so forgot about srcs lol .
And just checked - highest instruction set in ur compilation is SSE2 .

Tested version r3, r4 SSE2 and FPU,
got lowest FPS when going out the back of honeyside in Riften and look at the mountains, about 22 fps with R4, both versions, 20-21 with R3.
no crashes at all with the r4 version
got some mods installed, except Skyrim HD lite and a lot of ini tweaks nothing heavy.
Phenom II X3 720 oc to 3.2 Ghz stable,
8 gb DDR3 Ram,
Powercolor 6870 at stock 12.1preview driver
win7 X64.

I noticed that GPU load hovers around 65-80%, and my cpu load too...
isn't that a bit low?

to Alexander:
aren't there any newer optimisations for the Phenom II then SSE2 and or FPU ?
noticed this link:
http://board.flatassembler.net/topic.php?t=5122&start=180
I seem to recall some applications compiled with the intel compiler seemed to not work very efficiently on AMD CPU's,

don't know if this could be the case here?

btw, what are the differences in your 7 versions test build?

Bonusbartus
One of that 7 builds must be correct and must run without CTDs , all other - must have CTD , task is to find the correct one .
And ur link doesn't open for me .

doesn't open here either.... worked a few minutes ago...
link is about optimisations for mandelbrot test on different architectures...
not at home right now, so can't test for you....

what gpu/cpu loads is everyone else getting?

Any point targeting SSE3S (seems to be the highest for Q6600)? May grab visual studio and give it a try, is the source fixed now?

baker99
SSSE3 is not supported by MSVC code generator .

Do we need to reinstall r4?

Thanks Alexander, won't download it then, looks like SSE3 doesn't add much over SSE2 anyway, just 13 new institutions, I haven't got enough coding skill to tweak the code itself like you so I'll leave it to the experts.

For everyone who is asking about oblivion boost - quick look confirmed that basic optimizations were turned on there by default , no sense in tryn' to boost so far , probably I shud install the game and check everything else , but not until I will finish with skyboost .

NICK ALTMAN
nope

Wonder why they turned it off for Skyrim.

I know - it's more about newer compiler and processor target than about instructions

__forceinline float sub_64DF40(int _this, int a2) // dot product        {          return (float)(*(float *)_this * *(float *)a2                       + *(float *)(_this + 4) * *(float *)(a2 + 4)                       + *(float *)(_this + 8) * *(float *)(a2 + 8));        }

It's hard for compiler to chew code like this and see opportunities for SSE overall - as _this and a2 could point to overlapping memory there are nasty register load etc dependencies introduced by code like this. On the other hand this is pretty much optimal for AMD cpu's.

Alex - any chance of fixed r4 sources?

r3 gave me problems with loading distant textures.
r4 seems to have fixed that.

Even after adding larger textures and tweaking the settings to 'higher than ultra' in the .ini files, I can't seem to find any problems with it either. Good job. Not bad.

Does that count for all AMD targets?
I can imagine the Phenoms will behave differently than Bulldozers, with their new FP architecture?

HADDPS are also pretty useless for this game (the only useful for games instruction in SSE3)

And even more useless for Q6600 as its SSE3 performance was not that great, it took Penryn and Nehalem for SSE3 to start to make sense.

Some People seem to have more performance with SSE2 on Phenom II, but not for me. Also using Phenom II X6 1100T, but I have more performance by using FPU. About 2 FPS in Markath. But I noticed stuttering in dungeons or caves... Wasn't that much in r3...

Guyz , let's test r4 test 2 , i blocked some function optimizations , so we can try to figure out the bad one which causes CTDs
http://dl.dropbox.com/u/1237747/r4_test_2.zip

we need to confirm that there is no CTD with this version

Alexander is test 2 fpu or sse2?

sse2

Thanks, I'll test tonight, but so far I haven't noticed any more crashes with r4 than vanilla, which isn't many at all.

I've been using R4 SS4 now for maybe around 8 hours of in-game time, and not a single CTD with Intel C2D E6550.

Same her but fpu version i did play for 12 hours finished main quest not single ctd.

I am guessing that sse2 test2 is mainly for those who had crashes with sse2 test1 right?
Just asking because I never had any CTDs with r4 test 1 sse2 or fpu.

Edit: Well I tested it anyway and here is a bench comparing it to the rest, keep in mind the graph has a **Minimum of 44.
http://oi41.tinypic.com/hvqseb.jpg

I found that it was actually smoother, as shown on the graph, the dips are actually less than sse2 test 1 and fpu.
Any chance for an AVX or FMA4 test version?

Scratch that, just tried SSE2 test 2 and i have about 36 FPS in Markath near Watermill. With Test1 SSE I had 29-30 FPS and with FPU 30-31 FPS:


Markath (near Watermill):

r3: 27 FPS
r4 test1 SSE2: 29-30 FPS
r4 test1 FPU: 30-31 FPS
r4 test2 SSE2: 36 FPS

Using Phenom II X6 1100T...

Thanx Alexander for fpu version .I have SSE processor. Athlon xp.
I'll post results.