Groups > comp.sys.apple2.programmer > #4367

Re: PLASMA 2.0

Newsgroups	comp.sys.apple2.programmer
Date	2018-03-17 07:34 -0700
References	<f808c836-c4ca-476d-bc53-468ebd655e7d@googlegroups.com> <8bd9b123-8a59-41d3-9d1f-58d5762b6e3f@googlegroups.com>
Message-ID	<16fb46ce-cb28-4e5b-baaf-c4dddf41d712@googlegroups.com> (permalink)
Subject	Re: PLASMA 2.0
From	David Schmenk <dschmenk@gmail.com>

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On Friday, 16 March 2018 18:00:58 UTC-7, John Brooks  wrote:
> 
> Wow, those sound like great optimizations Dave!
> 
> Any idea how this compares to the older version of PLASMA which could generate native code?
> 
> Now I wonder how fast the GS could calc the Sieve benchmark, both native and via bytecode...
> 
> -JB

Thanks John - as a matter of fact, I still have a few natively compiled programs on one machine. The easiest to compare is RODs colors. Version 2 runs about 80% the speed of the native version. It is important to note that ROD is very multiply and divide intensive, sort of the great equalizer. But even still, getting pretty close for that case, and its 248 bytes vs ~2K bytes in size.

Generating native 65816/65802 code from byte code seems almost trivial. The only mismatch comes the 6502 centric evaluation stack implementation. The 6502 uses a ZP evaluation stack and the 65802 uses the HW stack for evaluation. So it has to copy values back and forth between function calls. Some code that uses a lot of function calls will actually run faster on the 6502, others that use larger and more complex routines like the compiler run much faster on the 65802. Sieve doesn't make many function calls and is compute bound - it would make an excellent candidate for native code generation.

Some of the code crunching I had to do on the Apple 3, and your discussion on code sequence optimizations, really has me thinking on how to take a hybrid approach to a JIT. I am wrapping up some optimizations to the case block processing (I order the case values from lowest to highest so it can early exit if it finds the search value is less than the case value) and then I'm going to start experimenting with native and hybrid code.

Dave...

Thread

PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-16 11:43 -0700
  Re: PLASMA 2.0 Steve Nickolas <usotsuki@buric.co> - 2018-03-16 20:47 -0400
    Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-17 07:06 -0700
  Re: PLASMA 2.0 John Brooks <jbrooks@blueshiftinc.com> - 2018-03-16 18:00 -0700
    Re: PLASMA 2.0 Antoine Vignau <antoine.vignau@laposte.net> - 2018-03-16 22:18 -0700
      Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-17 07:36 -0700
    Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-17 07:34 -0700
      Re: PLASMA 2.0 Michael J. Mahon <mjmahon@aol.com> - 2018-03-17 10:05 -0500
        Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-17 20:56 -0700
          Re: PLASMA 2.0 Michael J. Mahon <mjmahon@aol.com> - 2018-03-18 00:59 -0500
            Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-18 07:47 -0700
              Re: PLASMA 2.0 Michael J. Mahon <mjmahon@aol.com> - 2018-03-21 00:23 -0500
      Re: PLASMA 2.0 John Brooks <jbrooks@blueshiftinc.com> - 2018-03-18 01:10 -0700
        Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-18 08:06 -0700
          Re: PLASMA 2.0 John Brooks <jbrooks@blueshiftinc.com> - 2018-03-18 12:20 -0700
            Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-18 13:56 -0700
              Re: PLASMA 2.0 John Brooks <jbrooks@blueshiftinc.com> - 2018-03-18 17:35 -0700
  Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-23 13:32 -0700
    Re: PLASMA 2.0 Antoine Vignau <antoine.vignau@laposte.net> - 2018-03-23 14:07 -0700
      Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-23 17:22 -0700
  Re: PLASMA 2.0 Michael Mann <gmail@ware4.com> - 2018-03-23 16:44 -0700
    Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-23 17:20 -0700
      Re: PLASMA 2.0 mmphosis <mmphosis@macgui.com> - 2018-03-24 01:13 +0000
        Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-23 19:09 -0700
      Re: PLASMA 2.0 Steve Nickolas <usotsuki@buric.co> - 2018-03-23 21:55 -0400
        Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-23 19:12 -0700
          Re: PLASMA 2.0 Antoine Vignau <antoine.vignau@laposte.net> - 2018-03-24 00:34 -0700
            Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-24 07:51 -0700
  Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-28 15:39 -0700
    Re: PLASMA 2.0 Michael J. Mahon <mjmahon@aol.com> - 2018-03-28 20:52 -0500
      Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-29 07:17 -0700
        Re: PLASMA 2.0 Zellyn <zellyn@gmail.com> - 2018-03-29 08:12 -0700
          Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-29 22:19 -0700
  Re: PLASMA 2.0 Tom Porter <laseractiveguy@gmail.com> - 2018-03-28 23:02 -0700
    Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-29 07:21 -0700
  Re: PLASMA 2.0 "Frank M." <frank_o_rama@hotmail.com> - 2018-03-29 08:25 -0700
    Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-29 22:21 -0700
    Re: PLASMA 2.0 "Frank M." <frank_o_rama@hotmail.com> - 2018-04-01 07:48 -0700
      Re: PLASMA 2.0 "Michael J. Mahon" <mjmahon@aol.com> - 2018-04-01 13:12 -0700
        Re: PLASMA 2.0 Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2018-04-02 00:02 -0500
          Re: PLASMA 2.0 Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2018-04-03 00:07 -0500
            Re: PLASMA 2.0 MG <guidero@gmail.com> - 2018-04-02 22:35 -0700
            Re: PLASMA 2.0 Michael J. Mahon <mjmahon@aol.com> - 2018-04-03 13:47 -0500
              Re: PLASMA 2.0 Brian Patrie <bpatrie@bellsouth.spamisicky.net> - 2018-04-04 04:38 -0500
  Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-30 15:46 -0700
    Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-03-31 13:25 -0700
  Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-04-12 18:43 -0700
  Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-04-14 08:43 -0700
    Re: PLASMA 2.0 Michael J. Mahon <mjmahon@aol.com> - 2018-04-14 21:26 -0500
      Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-04-15 07:35 -0700
        Re: PLASMA 2.0 "Michael J. Mahon" <mjmahon@aol.com> - 2018-04-15 16:24 -0700
          Re: PLASMA 2.0 Michael Pohoreski <michael.pohoreski@gmail.com> - 2018-04-23 23:01 -0700
    Re: PLASMA 2.0 John Brooks <jbrooks@blueshiftinc.com> - 2018-04-15 00:24 -0700
      Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-04-15 08:10 -0700
        Re: PLASMA 2.0 John Brooks <jbrooks@blueshiftinc.com> - 2018-04-15 10:22 -0700
          Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-04-15 13:00 -0700
            Re: PLASMA 2.0 John Brooks <jbrooks@blueshiftinc.com> - 2018-04-15 15:17 -0700
  PLASMA 2.0 Michael Pohoreski <michael.pohoreski@gmail.com> - 2018-04-24 08:54 -0700
    Re: PLASMA 2.0 David Schmenk <dschmenk@gmail.com> - 2018-04-25 06:37 -0700

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