yade-dev team mailing list archive
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yade-dev team
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Mailing list archive
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Message #00071
Re: draw speed
We will have to do some benchmarks on rendering, but my video card is
fairly crappy onboard i945 (DRI works, acceleration also), hence my case
may not be relevant. For synchronized display, I frequently got crashes
so I don't use it.
Since there were no changes introduced to drawing during the transition
to official wm3, I would think there might be other things that caused it.
For wm3, I found out that it doesn't make use of SEE2 vector
instructions (which may give easily 50% sppedup for vector calculations)
- the only library that does that is atlas (tuned specifically for
different instruction sets - like package atlas-sse2), but it is fairly
low-level (blas). If there were a library that does link to atlas and
has nice c++ interface, I would perhaps use it instead of wm3? Don't
know what the speedup would be. Before you ask - gcc will not vectorize
the code during optimizations, at least not the one I have here (checked
with objdump).
Bruno: for IRC, I will pass by.
Vaclav
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References
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float, double, the DOUBLE_PRECISION flag
From: Janek Kozicki, 2006-12-08
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Re: float, double, the DOUBLE_PRECISION flag
From: Vaclav SMILAUER, 2006-12-11
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Re: float, double, the DOUBLE_PRECISION flag
From: Bruno Chareyre, 2006-12-15
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Re: float, double, the DOUBLE_PRECISION flag
From: Bruno Chareyre, 2006-12-15
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Re: float, double, the DOUBLE_PRECISION flag
From: Vaclav SMILAUER, 2006-12-15
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Re: float, double, the DOUBLE_PRECISION flag
From: Bruno Chareyre, 2006-12-18
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Re: float, double, the DOUBLE_PRECISION flag
From: Vaclav SMILAUER, 2006-12-18
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Re: float, double, the DOUBLE_PRECISION flag
From: Bruno Chareyre, 2006-12-18
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Re: float, double, the DOUBLE_PRECISION flag
From: Vaclav SMILAUER, 2006-12-18
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Re: float, double, the DOUBLE_PRECISION flag
From: Bruno Chareyre, 2006-12-19
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Re: draw speed
From: Janek Kozicki, 2006-12-20