From: Allan Schaffer (allan++at++sgi.com)
Date: 11/16/2000 09:53:58
On Nov 15, 3:41pm, Dirk Baerts wrote:
> Thanks for your extensive answer.
> Unfortunately, one chef whipping the eggs isn't an option right now.
In that case, it would be best to force the 'chefs' to take turns.
In the DRAW callback for each [independent] program, set up a
synchronization barrier between the two using a semaphore or other
sort of mutual lock. You want each process to treat the entire
channel DRAW callback as a critical region.
This might seem counterintuitive since it would serialize rendering
from each program. But the net result will prevent the system from
being overwhelmed by graphics context switches, which _should_ be
a major improvement.
> And indeed, the O2 is short of system memory : 64 M. We'll do
> something about that.
Allan
-- Allan Schaffer allan++at++sgi.com Silicon Graphics http://reality.sgi.com/allan
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