Memory issue when render with huge particle

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Hi friends,

Currently I doing a shot need to render more than 200 million particle.
It's a sand effects so I just render them as point with mantra surface(diffuse only).

For optimize I've removed all the attribute I don't need.
The lighting only one sun light and one env light.
And everything is delay shader.

But the rendering will took 30+GB memory…..

Sorry I can't provide the scene, but does we have a idea can optimize more?
Any advise will appreciate!

iGou
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Try to slice the sim or pack it if it's not already packed.
~t.goat
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Hi trojan,

Thanks for the advice.
Yes, in the end I slice them. render separately and merge in comp. that's cool!

Cheers,
iGou
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