E-Maculation

Posted: **Tue May 04, 2021 3:46 pm**

I myself disabled JIT in BasiliskII in the past because of stability issues and I never again enabled it since. On my late 2013 iMac I do not miss it. And in our BasiliskII setup guide we (still) advise to not enable JIT.

I do not know how others feel about removing JIT from BasiliskII for macOS permanently.

Posted: **Tue May 04, 2021 6:03 pm**

I know some of our recent users have been using it, especially on Raspberry Pi machines (not the target here). If we're looking specifically at macOS 11 and later, I really don't see the use of JIT, as any machine that can run Big Sur is more than beefy enough to run non-JIT BII at full speed.

That said, disabling FPU and just running SoftwareFPU should also work, shouldn't it?

Personally, I've kept JIT disabled on macOS for around 5 years now.

Posted: **Wed May 05, 2021 2:20 am**

adespoton wrote: ↑Tue May 04, 2021 6:03 pm That said, disabling FPU and just running SoftwareFPU should also work, shouldn't it?

It works, but slow.

MacBench FPU scores:
Quadra630: 100%
fpu=false and SoftwareFPU installed (master branch): 62%
fpu=true (update_uae branch): 1173%

Posted: **Wed May 05, 2021 7:41 am**

When BasiliskII works fine natively on arm64 there is no reason for the user to try and run it with Rosetta.
And BasiliskII will run so fast on any arm64 machine that JIT is not needed.

Is it possible to to make it so that a universal build uses different solutions for FPU and JIT for the two architectures?

Posted: **Wed May 05, 2021 9:31 am**

But, frankly, I think that the JIT compiler is not needed on any modern Mac, whether Intel or Apple Silicon.

Posted: **Wed May 05, 2021 11:56 am**

BasiliskII is already very fast on Intel machines. It seems best to give it up and focus on FPU instead. But that's only one person's opinion!

Posted: **Wed May 05, 2021 1:27 pm**

I disabled JIT compiler.

I found one problem.
SheepShaver cannot be built if updating uae_cpu.
I thought SheepShaver depended only on kpx_cpu, but it also depended on uae_cpu.

Therefore, the merge into master is still pending.

Posted: **Wed May 05, 2021 2:29 pm**

I found only one file refers to uae_cpu.
Copied old file to SheepShaver, now both BII/SS can be built.

Posted: **Wed May 05, 2021 3:40 pm**

That's great! Using the new uae_cpu where it's called in SS is an added bonus.

Posted: **Wed May 05, 2021 3:45 pm**

What will be the properties of the resulting builds, SheepShaver and BasiliskII, x86_64 and arm64?

FPU working in all four?

BasiliskII: No JIT compiler in both x86_64 and arm64?

SheepShaver: JIT compiler available in both x86_64 and arm64?

Edit: Do I understand correctly that only BasiliskII changed and nothing changed for SheepShaver?

Posted: **Wed May 05, 2021 8:59 pm**

There was one change to SheepShaver where uae_cpu was updated; I don't know if it affects JIT.

Posted: **Thu May 06, 2021 1:12 am**

I modified to manage two versions of uae_cpu in one Xcode project of BII.
Then I re-enabled the x86_64 JIT compiler.

The summary is as follows.

BasiliskII(x86_64): FPU OK, JIT available
BasiliskII(arm64): FPU OK, non-JIT
SheepShaver(x86_64): FPU OK, JIT available
SheepShaver(arm64): FPU OK, non-JIT

The JIT compiler of SheepShaver(arm64) is under developing by Jagmn.
I am looking forward to the release.

Posted: **Thu May 06, 2021 5:35 am**

Hi,

I assume this is going on in your update_uae branch, not in master?

Best,
Cat_7

Posted: **Thu May 06, 2021 7:04 am**

As the FPU issue is with BasiliskII only in the current master, would it be OK to post a BasiliskII build with this solution?

Posted: **Thu May 06, 2021 9:34 am**

Cat_7 wrote: ↑Thu May 06, 2021 5:35 am I assume this is going on in your update_uae branch, not in master?

Yes.

Ronald P. Regensburg wrote: ↑Thu May 06, 2021 7:04 am As the FPU issue is with BasiliskII only in the current master, would it be OK to post a BasiliskII build with this solution?

Yes, but there is one problem.
The arm64 part of BII build requires MPFR library.
If an M1 Mac, you can easily install it with Homebrew.

Code: Select all

$ brew install mpfr

But I don't know how to install the library for arm64 on an Intel machine using Homebrew.
Does anyone know?

Posted: **Thu May 06, 2021 9:49 am**

Does any of this help? But then obviously the other way around

viewtopic.php?f=34&t=11085

Best,
Cat_7

Posted: **Thu May 06, 2021 10:40 am**

At this stage I think it is better not to post new builds yet.

I will add to my latest BasiliskII build the warning to use it on Apple Silicon with

Code: Select all

cpu 3
fpu false

Posted: **Thu May 06, 2021 11:30 am**

I assume that the MPFR library is needed for building.
Cannot MPFR for arm64 simply be copied from an arm64 machine to an Intel machine?

(BTW: In 5 to 6 weeks I expect to receive the M1 iMac I ordered.)

Posted: **Fri May 07, 2021 1:15 am**

Yes, the libraries are only needed at build time.
And copy is OK. However, you need the headers as well as libgmp.a and libmpfr.a.

Posted: **Fri May 07, 2021 3:24 am**

kanjitalk755 wrote: ↑Fri May 07, 2021 1:15 am Yes, the libraries are only needed at build time.
And copy is OK. However, you need the headers as well as libgmp.a and libmpfr.a.

Well, you could just make them a requirement like SDL, and include installation instructions....

Posted: **Mon May 10, 2021 11:08 am**

I understand that this is now merged into the master branch.

While I am still on Intel, I will need to install GMP / MPFR library for arm64 manually if I want to build BasiliskII for arm64.
How do I do that?

Posted: **Mon May 10, 2021 4:42 pm**

Ronald P. Regensburg wrote: ↑Mon May 10, 2021 11:08 am I understand that this is now merged into the master branch.

While I am still on Intel, I will need to install GMP / MPFR library for arm64 manually if I want to build BasiliskII for arm64.
How do I do that?

I'm pretty sure Homebrew lets you pull down whatever libraries you want: https://formulae.brew.sh/formula/mpfr and https://formulae.brew.sh/formula/gmp are available, with links to the formula source and pre-bottled copies.

Posted: **Mon May 10, 2021 5:23 pm**

This is what kanjitalk755 wrote earlier in this thread:

The arm64 part of BII build requires MPFR library.
If an M1 Mac, you can easily install it with Homebrew.
Code: Select all
$ brew install mpfr
But I don't know how to install the library for arm64 on an Intel machine using Homebrew.
Does anyone know?

And this is what he writes in his build instructions:

BasiliskII
macOS
preparation:
Code: Select all
$ brew install mpfr
(for Intel Mac, install GMP / MPFR library for arm64 manually)

So, how do I install the library for arm64 manually on Intel Mac?
And where should it be installed?

Posted: **Mon May 10, 2021 6:08 pm**

On Intel I guess you first need to install brew for arm? One other build environment to keep track of.

arch -arm64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homeb ... install.sh)"

Find the actual url to use here:
https://brew.sh/

and then install mpfr:
arch -arm64 brew install mpfr

But please don't take my word for it, I could very well be wrong here

Best,
Cat_7

Posted: **Mon May 10, 2021 6:14 pm**

Cat_7 wrote: ↑Mon May 10, 2021 6:08 pm On Intel I guess you first need to install brew for arm? One other build environment to keep track of.

arch -arm64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homeb ... install.sh)"

Find the actual url to use here:
https://brew.sh/

and then install mpfr:
arch -arm64 brew install mpfr

But please don't take my word for it, I could very well be wrong here

Best,
Cat_7

That was my understanding as well; but once again, I've also never done it for ARM->IA64. I just tested it and got "Unknown architecture: ARM64" -- going to test homebrew to see if it's got any built-in flags. I know MacPorts lets you define the architecture you want to grab; that may be a possibility if Homebrew doesn't deliver.

[edit] https://docs.brew.sh/Bottles

If you really want your bottles to be optimised for something else, you can pass the --bottle-arch= option to build for another architecture; for example, brew install foo --build-bottle --bottle-arch=penryn. Just remember that if you build for a newer architecture some of your users might get binaries they can’t run and that would be sad!

[edit2]

Here you go:
https://ghcr.io/v2/homebrew/core/mpfr/b ... 28cf0598d5
https://ghcr.io/v2/homebrew/core/gmp/bl ... 4ca7593eec

E-Maculation

Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms

Re: Sheepshaver/BasiliskII development and supported platforms