Dolphin, the GameCube and Wii emulator - Forums

I may delve into it and see what I can do, but probably going way over my head though really to be honest haha, never done anything of the like before! Thanks for your help

(07-10-2012, 11:57 PM)AnyOldName3 Wrote: [ -> ]Find me something like FRAPS which doesn't run on the two cores that I use for dolphin (and hence destroy the framerate) and I'll do some tests.

Frap's benchmark shouldn't affect performance at all.

However the most accurate way to test performance is to record a .dtm, and play it back. Select a game, then go to emulation and start recording. From there, play through the game however long you want to test, and exit the game and save the .dtm. Then play it back, and make sure the same thing happens as when you recorded it (it may not if you use dual core, hle audio, idle skipping, or audio on thread). You'll notice that while recording or playing back a .dtm, there is a frame counter in the status/title bar, so you can now just let the .dtm play for a minute or two and note what frame it is at (frame advance once first, since the frame counter is inaccurate while playing).

*UPDATE* Yeah, I was a little bit bored and so I decided to compile the latest Dolphin revision for ya As always, with and without ICC optimizations. Besides, I patched the ICC binaries (x64 and x86) with the Intel Compiler Patcher. This should (hopefully) improve the performance of ICC builds on AMD CPUs (or not, i don't know, but some people confirm, that there is a little performance boost on AMD systems).

Have fun and happy testing Pls report back, if the ICC builds work now better on AMD systems, thanks

* Dolphin 3.0-720-gd34418100be1 x64/x86 with ICC optimizations (patched with Intel Compiler Patcher)
* Dolphin 3.0-720-gd34418100be1 x64/x86 regular builds (not patched with Intel Compiler Patcher)

Click here to download ICC optimized builds!
Click here to download normal builds!

Great, I hope you are bored regularly.

Is patching with the ICP supposed to have any additional benefits ?

Afaik nope. The performance boost (?) on AMD systems is the only impact and aim of ICP.

thx for the info

Quote:/O3 optimizations:

Enables /O2 (-O2) optimizations plus more aggressive loop and
memory-access optimizations, such as scalar replacement, loop
unrolling, code replication to eliminate branches, loop blocking to allow
more efficient use of cache and additional data prefetching.

The /O3 (-O3) option is particularly recommended for applications that
have loops that do many floating-point calculations or process large
data sets. These aggressive optimizations may occasionally slow
down other types of applications compared to /O2 (-O2).

well, I dont know for others, but in my case it speed things a lot, so I would like to stick with /O3 since it seems to work fine for me.

relating previous quote, /O2 seems better than /O3, are there any build with /O2 somewhere?

/O2 optimizations are enabled by default when something is compiled with VisualStudio. My builds contain /O2, Lectrode's builds too and the same for ExtremeDude2's builds.

thanks again for the info DefenderX ^^

mmm, then for some reason /O3 works better than /O2 for me, it can be weird, but I got more speed percentaje % on games with the same build revision, settings and everything the same but with /O3 compared with the /O2 revision.

I know it is suposed to be the oposite, but idk.

thats weird ^^

Annyone interested in creating a recent ICC build enhanced with the very latest Xenoblade Fix from here minus the recent fast mipmaps removal?

http://forums.dolphin-emu.org/showthread.php?tid=14356&page=27

Great builds DefenderX, they provide a definite speedup on my system - and they have OpenMP! (which for whatever reason I can't compile with...)

I did notice one issue though: using the DSP LLE recompiler causes distorted sound in all games I've played so far, and this definitely does not occur in any of the standard Dolphin revisions. Might want to look into that. I've used a few of your builds and iirc they all had this issue. I don't remember off the top of my head which ones those were but I'm currently using your 3.0-720 64-bit build.

For those games where DSP LLE isn't necessary/preferred for whatever reason, I'd say this is the best build currently available. For example, I can run Skyward Sword on the recommended settings at 2.5x IR at full speed, whereas the framerate on the latest official build tends to fluctuate quite a bit regardless of IR settings.