<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">Ugin:<br></div></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
I did not find anything in the descriptions of the program about using <br>
the GPU. Is there such a possibility? Where can I read about it?<br>
<br></blockquote><div><span class="gmail_default" style="font-size:small">If we understand what you are asking correctly, here is what gg had to say:</span></div><div><span class="gmail_default" style="font-size:small"><br></span></div><div><span class="gmail_default" style="font-size:small">All OpenGL code uses the GPU (Graphics Processing Unit)</span> <span class="gmail_default" style="font-size:small">just like all Cinelerra code use the CPU (Central Processing Unit). So if you have Settings->Preferences->Playback A/B, Video Driver set to X11-OpenGL you are using the GPU for:</span></div><div><span class="gmail_default" style="font-size:small"> - line drawings</span></div><div><span class="gmail_default" style="font-size:small"> - fill</span></div><div><span class="gmail_default" style="font-size:small"> - all GL primitive operations<br></span></div><div><span class="gmail_default" style="font-size:small"><br></span></div><div><span class="gmail_default" style="font-size:small">If you are specifically inquiring about use of CUDA software with the meaning as follows:</span></div><div><span class="gmail_default" style="font-size:small"> <br></span></div><div><span class="gmail_default" style="font-size:small">"CUDA is an API model which allows software developers to use a CUDA-enabled Graphics Processing Unit for general purpose processing, aka GPGPU (General-Purpose computing on Graphics Processing Units). The CUDA
platform is a software layer that gives direct access to the GPU's
virtual instruction set and parallel computational elements." (paraphrased from Wikipedia).<br></span></div><div><span class="gmail_default" style="font-size:small"><br></span></div><div><span class="gmail_default" style="font-size:small">...then the answer is "no". Probably about a year or 2 ago, GG tested Cuda code with Cinelerra-GG. It did not perform well. Some operations performed better but, sadly, most of what Cin does, it did not do well. Cuda is mostly a "block oriented algorithm" which works well for such things as "a flock of birds all flying next to each other".<br></span></div><div><span class="gmail_default" style="font-size:small"><br></span></div><div><span class="gmail_default" style="font-size:small">After hearing this from GG, I do not think it would be appropriate to include this in the manual, although I am always looking for more to add. GG/phyllis<br></span></div></div></div>