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R. Belmont
Cuckoo for IGAvania
Reged: 09/21/03
Posts: 9716
Loc: ECV-197 The Orville
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Re: MAME is very fast since I run it on Win7 x64
11/23/10 05:10 PM


> Makes you wonder how fast MAME will become when it will truly support parallelism.
> Right now dual cores have similar if not better performances than quad cores.

Not true - on games like NFL Blitz, MAME will improve up to 3 cores (although it won't soak 'em all), and it won't get worse above that as it used to.

> The old MAME dogma "we will have 100GHz CPU someday so don't worry about speed" has
> been contradicted by reality. CPUs seem to have reached their physical limit around
> 5GHz. Now the only way to get better performance is parallelism. So MAME will need to
> add real support for it sooner or later.

It's physically impossible to parallelize things that didn't happen in parallel on the real hardware, which for non-3D games is "almost everything". Not to mention that you'd lose more performance than you gained trying to synch - doing IPC across cores is still extremely slow on x86/x64. If CPUs don't get faster (engineering samples of Intel's upcoming "Sandy Bridge" core can run happily at 5 GHz on normal air cooling, so the death of Moore's Law has been exaggerated a bit) then emulation of some games will simply not be possible.







Entire thread
Subject Posted by Posted on
* MAME is very fast since I run it on Win7 x64 ReadOnly 11/21/10 11:12 PM
. * Re: MAME is very fast since I run it on Win7 x64 tamalmalamarrado  12/01/10 07:13 AM
. * Re: MAME is very fast since I run it on Win7 x64 karadaniano  11/30/10 02:47 PM
. * Re: MAME is very fast since I run it on Win7 x64 redk9258  11/30/10 04:45 PM
. * Re: MAME is very fast since I run it on Win7 x64 R. Belmont  11/22/10 04:27 PM
. * Re: MAME is very fast since I run it on Win7 x64 ReadOnly  11/22/10 10:33 PM
. * Re: MAME is very fast since I run it on Win7 x64 R. Belmont  11/22/10 11:25 PM
. * Re: MAME is very fast since I run it on Win7 x64 ReadOnly  11/23/10 03:48 PM
. * Re: MAME is very fast since I run it on Win7 x64 R. Belmont  11/23/10 05:10 PM
. * Maybe his Internet was WriteOnly *nt* CrapBoardSoftware  11/22/10 07:09 PM
. * Re: Maybe his Internet was WriteOnly *nt* ReadOnly  11/22/10 08:47 PM
. * Re: Maybe his Internet was WriteOnly *nt* CrapBoardSoftware  11/22/10 09:36 PM
. * Re: MAME is very fast since I run it on Win7 x64 John IV  11/22/10 01:37 AM
. * Re: MAME is very fast since I run it on Win7 x64 Naoki  11/22/10 12:28 AM

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