RE: [GD-Windows] How to determine total physical memory available ?
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RE: [GD-Windows] How to determine total physical memory available ?
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From: Yannick L. <yle...@ub...> - 2004-01-26 21:15:01
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Both ;-)
Yeah, right now I'm doing as you're suggesting but I still would like =
to
display the right value to the user. I guess I'll have to live with it
unless I find a better way.
Yannick
-----Original Message-----
From: Simon O'Connor [mailto:si...@sc...]
Sent: Monday, January 26, 2004 4:07 PM
To: gam...@li...
Subject: RE: [GD-Windows] How to determine total physical memory
available ?
BTW:
Do you actually need the value for presentation to the user?
Or is this to determine whether the user has enough physical memory to =
run
your game or use advanced memory hungry features?
If it's the latter, then you should only really use the value as a =
rough
guide (much the same as with total video memory), e.g.:
if (memorysize < 500000000)
{
alert( "sorry this game requires a minimum of 512MB" );
return;
}
m_enableMemoryHoggingFeature =3D false;
if (memorysize >=3D 1000000000)
{
m_enableMemoryHoggingFeature =3D true;
}
Of course, you can never assume all of that physical memory is yours to =
play
with anyway (kernel allocations, AGP reservation etc).
Simon O'Connor
Programmer @ Acclaim
& Microsoft DirectX MVP=20
> -----Original Message-----
> From: gam...@li...=20
> [mailto:gam...@li...] On=20
> Behalf Of Yannick Letourneau
> Sent: 26 January 2004 20:21
> To: gam...@li...
> Subject: RE: [GD-Windows] How to determine total physical=20
> memory available ?
>=20
> Actually it would be a little more complicated since memory=20
> can be a sum of different power of 2 (for example if you have=20
> one memory chip of 128 MB and another of 64 MB totaling 192MB=20
> which is not power of 2).
>=20
> I'd rather not make this kind of assumption myself and let=20
> the system give me the exact numbers ;-)
>=20
> -----Original Message-----
> From: Timur Davidenko [mailto:ti...@cr...]
> Sent: Monday, January 26, 2004 3:16 PM
> To: gam...@li...
> Subject: RE: [GD-Windows] How to determine total physical=20
> memory available ?
>=20
>=20
> I guess System Information tool just rounds this number to=20
> the next "reasonable" number.
> It knows that memory chips don't come in 1022Mb setups..
> So it`s quite easy to round number you get to closest power of 2..
>=20
> _____________________
> Timur Davidenko.
> Crytek (http://www.crytek.com)
>=20
> -----Original Message-----
> From: Yannick Letourneau [mailto:yle...@ub...]
> Sent: Monday, January 26, 2004 8:47 PM
> To: gam...@li...
> Subject: [GD-Windows] How to determine total physical memory=20
> available ?
>=20
> I need to determine how much memory is installed on the=20
> user's system somehow.
>=20
> I used GlobalMemoryStatus but the values returned in the=20
> member dwTotalPhys is always underestimating a bit. For=20
> example on my dev machine it returns
> 1022 MB although I have 1024 MB installed. Same thing=20
> happens on all systems I've tested.
>=20
> Same thing is reported in dxdiag.exe so they seem to use that=20
> function as well.
>=20
> However, when I use the System Information tool in the system=20
> tools of Windows, it correctly reports 1024 MB.
>=20
> So anyone knows how I can get the exact information ?
>=20
> Yannick L=E9tourneau
> UBISOFT
>=20
>=20
>=20
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