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0.148 multi-threading enabled by default
#302362 - 01/11/13 04:32 PM
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i notice in the list of mame 0.148 changes that multi-threading is now enabled by default in windows
i thought multi-threading was experimental and sometimes cause issues, or is that in the past now
ps. anyone know if later gen pentium 4 hyper threading cpu's see much advantage with mame multi-threading enabled or 'not really' (i will do some tests myself in a couple of days but interested to hear any thoughts on this)
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DMala |
Sleep is overrated
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Re: 0.148 multi-threading enabled by default
[Re: grog]
#302364 - 01/11/13 05:20 PM
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> i notice in the list of mame 0.148 changes that multi-threading is now enabled by > default in windows > > i thought multi-threading was experimental and sometimes cause issues, or is that in > the past now
I've had it turned on for ages, and I've never seen any problems. I'm running an older dual core AMD, I actually need it to get some things running at full speed. As I recall, Donkey Kong has issues for me with multithreading off. If it's on by default, the devs must be pretty confident of it as well.
> ps. anyone know if later gen pentium 4 hyper threading cpu's see much advantage with > mame multi-threading enabled or 'not really' (i will do some tests myself in a couple > of days but interested to hear any thoughts on this)
It's worth trying, but I wouldn't expect too much. HT is somewhat useful for reclaiming cycles from apps that leave the CPU idle a lot, but for code that is fairly tightly written, it doesn't do very much. I suspect MAME keeps the CPU busy enough that you won't see much improvement.
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Dullaron |
Diablo III - Dunard #1884
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I have issues with the multi-threading enabled.
[Re: grog]
#302375 - 01/11/13 07:51 PM
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I leave it off. This motherboard doesn't have hyper-thread option.
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B2K24 |
MAME @ 15 kHz Sony Trinitron CRT user
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Re: I have issues with the multi-threading enabled.
[Re: Dullaron]
#302380 - 01/11/13 11:22 PM
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> I leave it off. This motherboard doesn't have hyper-thread option.
I always assumed multi-threading took advantage of multiple physical cores as well as virtual ones.
With a Q6600 wouldn't you want MT enabled?
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Dullaron |
Diablo III - Dunard #1884
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Re: I have issues with the multi-threading enabled.
[Re: B2K24]
#302382 - 01/11/13 11:27 PM
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> > I leave it off. This motherboard doesn't have hyper-thread option. > > I always assumed multi-threading took advantage of multiple physical cores as well as > virtual ones. > > With a Q6600 wouldn't you want MT enabled?
Never work right with the other stuff enabled in the mame.ini. MAME works just fine without it. I haven't got around with the 0.148 yet to see the problem is gone.
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Re: 0.148 multi-threading enabled by default
[Re: DMala]
#302421 - 01/12/13 12:16 PM
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I have to leave multi-threading off as it causes really bad lag with usb trackballs when used with v-sync.
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