Re: Massive Texture

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Harald Kaul (harald++at++harald.munich.sgi.com)
Tue, 28 Jun 1994 10:43:58 -0600

On Jun 27, 11:28am, Weiblen, Mike wrote:
> Subject: Massive Texture
> I realize this isn't strictly a Performer question, but I am using
Performer to
> load the textures...
>
> ===============================================================================
> gr_osview's memory bargraph goes up to 128M of some unspecified unit
(words?).
> When it gets to ~122M, I see disk activity which bumps it down to ~118M.
 At
> the time of the first disk swap, pfuDownloadTexList() is reporting about
250MB
> texture loaded.
>
> Paging from the RM to RAM is bad enough, but swapping to disk is a real
killer,
> and I'm looking for what kind of control I have over the texture swap
> threshold.
>
> Is there a manifest limit on the total RAM texture capacity? It has
been
> difficult for me to get time on our 1500MB ONYX to test if the limit is
a
> percentage of total mem. The bottom line: On the big ONYX, will it be
> possible for me to load our entire hi-res NELLIS database (total 525 MB
of
> texture) without swapping textures to disk?
>
> -- mew
>
>
>-- End of excerpt from Weiblen, Mike

in addition to Jim's comments:
the memory bargraph uses pages as unit, I don't think it says 118M but
118k, this is 118k * 4k = 472 MB, ==> you are reaching the limit of the
memory of your "small" system. Jim pointed out why you needed such much
memory.

-Harald

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