Big E-UAE JIT blog

@AmiDog

Wow the great Matthias amidog Roslund ... Wonderful see you in Amiga land :)

Another update :D

http://euaejit.blogspot.it/

@nubechecoore
I've kind of lost track:

1. Do we know how compatible his JIT currently is? i.e. What percentage of 68020+ software that works with original UAE still works with his JIT UAE?

2. Does he plan any further optimisations, or changes which might give big speed-ups? I was a bit disappointed that the last speed test he made (in May!) only showed a 4x speed-up (which is significant, but not nearly enough for many of the reasons people want JIT in the first place). I would have hoped for perhaps a 10x speed-up...

Update: http://euaejit.blogspot.com

(Put ppc.use_tbc=false in your .uaerc, in addition to what is listed in the README)

@MickJT

Wow, another nice present

Thanks to rachy and all involved

/me off to test

@ChrisH : try it and tell us how you feel

@K-L

Just make a simple test with sysinfo ... on Xe 933

Cpu Emulated 040 mmu and fpu with Aga


Uae amigfx = 5 mips and 2.52 mflops
Uae Jit = 14.86 mips and 3.28 mflops

it is a great result for a beta!

with 68020 only 25.95 mips

@tlosm
x5 speed-up sounds nice, but I suspect that SysInfo isn't the best way of benchmarking JIT (it'll probably give faster speeds than real-life programs).

Although you could argue it gives the "best case" speed-up, in which case this JIT can give us up to x5 speed-up.

@ChrisH

the best benchmarks are
1) Breathless
2)Alien breed 3d
3) Shapeshifter :P
4)Quake 68k timedemo :)

i will make another time an hdf wit os 3.9 and rtg to understand how it is fast :)

@tlosm

I'm pretty sure E-UAE can't emulate an MMU.

Anyone doing benchmarks should disable the TBC frequency calculation. It's currently broken, and might affect the emulation speed (it does with mandel_hw.kick).

For now, the e-uae-amigfx archive on OS4Depot won't be updated (with the JIT) until the JIT is out of beta, or I have the go-ahead from Rachy.

You'll note on his blog the JIT isn't finished and there's still some maths instructions to do.

Could someone explain how to install and test?

Should i install on a separate folder? If i install this JIT version, the installation could change something in the integrated emulation of OS4/Run in UAE?

i found this little bug ... of to report?

Error: JIT macroblock array ran out of space, please enlarge the static array
Internal error; file compemu_compiler_ppc.c, line

@AmigaBlitter

I used the OS4 Depot version of e-uae, copying in the .uaerc file from RunInUAE and making the required config changes from the JIT README.

I didn't touch the existing RunInUAE installation at all, for fear of messing it up somehow

@MickJT

you wrong :D

http://www.youtube.com/watch?v=pLedJuSKLOI

@thread

Weird, whenever JIT is activated all my kestrokes are repeated. And it's the same with my joypad.

Playing a flipper or typing a text is impossible if JIT is enabled. When disabled, I do not encounter any trouble.

@tlosm

Which point in the video? I'm certain only WinUAE added it recently, within the last couple of years.

Richard Drummond here says E-UAE doesn't have MMU support: link

Perhaps it only reports an MMU.

@MickJT

The video won the beginning i open the sysinfo. Read there
I us euae sdl from os4 depot not euae of runeuae

Note i run great shapehifter too 8)

@MickJT

@tlosm

I think the 040 came with an MMU and so that's why it's reported. If you tried some programs that need an MMU (ShapeShifter doesn't need one), I think they'll fail.

I could build an SDL version of e-uae JIT, but like I said, I won't be putting it on OS4Depot for now since the JIT is still in very early beta.

I will send you a PM on here soon.

@MickJT

When I activate leds in .uaerc : show_leds=true
I can't see the leds in the right background ??!
Any suggestions ?