<div dir="ltr"><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">Well....i do not know how to explain, but after restarting my computer, it works now for FDK at least. After FDK, i will try other algorithm, which i think will work as well.</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">Thanks for your kind help.</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">Guangming </div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff"><br></div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><font style="line-height:23.32400131225586px" face="arial, helvetica, sans-serif" color="#674ea7"><b><i>Guangming Zang (Alex)</i></b></font><div style="line-height:23.32400131225586px"><font face="arial, helvetica, sans-serif"><b><i><font color="#0b5394">King Abdullah University of Science and Technology</font><font color="#073763">(KAUST)</font></i></b></font></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i>University of Chinese Academy of Sciences(UCAS)</i></b></font></span><font face="arial, helvetica, sans-serif"><b><i><font color="#073763"><br></font></i></b></font></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.32400131225586px"><br></div></div></div></div></div></div>
<br><div class="gmail_quote">2015-06-11 0:08 GMT+03:00 Guangming Zang <span dir="ltr"><<a href="mailto:guangming.zang@kaust.edu.sa" target="_blank">guangming.zang@kaust.edu.sa</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Hi chao,</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Thanks very much for the prompt reply.</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">i am sorry but it mean "GPU RAM" when you say GRAM?? if yes, then it is 2 GB or 4GB(i need check when in lab tomorrow). But i was wondering when i run algorithm like basic SART or FDK, are they related to GPU or GRAM?? </div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Yes, i tried it by GPU as well, i mean, when use SART algorithm,</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">besides some basic Multi threads algorithms in -f and -b, i also tried the forewardprojection and backprojection as CudaRayCast, CudaVoxelBased, respectively, and only to find that nothing in the reconstructed volume (the slices are all black) in this GPU version . I tried in other simulated data in the RTKwiki, the Cuda version still does not work. For SART with Cuda ,the time elapsed is shown in attached file. and i remember when i configure RTK in my computer, i allow the Cuda option.</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">So what is the problem could be??</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)"><br></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Sorry for the long letter and thanks very much, like always</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Regards</div><span class="HOEnZb"><font color="#888888"><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)">Guangming</div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif;color:rgb(0,0,255)"><br></div></font></span></div><div class="gmail_extra"><span class=""><br clear="all"><div><div><div dir="ltr"><div><div dir="ltr"><font style="line-height:23.32400131225586px" face="arial, helvetica, sans-serif" color="#674ea7"><b><i>Guangming Zang (Alex)</i></b></font><div style="line-height:23.32400131225586px"><font face="arial, helvetica, sans-serif"><b><i><font color="#0b5394">King Abdullah University of Science and Technology</font><font color="#073763">(KAUST)</font></i></b></font></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i>University of Chinese Academy of Sciences(UCAS)</i></b></font></span><font face="arial, helvetica, sans-serif"><b><i><font color="#073763"><br></font></i></b></font></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.32400131225586px"><br></div></div></div></div></div></div>
<br></span><div><div class="h5"><div class="gmail_quote">2015-06-10 17:06 GMT+03:00 Chao Wu <span dir="ltr"><<a href="mailto:wuchao04@gmail.com" target="_blank">wuchao04@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi Guangming,<div><br></div><div>Did you also use GPU? Is there sufficient GRAM?</div><div><br></div><div>Regards, Chao</div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>2015-06-10 15:39 GMT+02:00 Guangming Zang <span dir="ltr"><<a href="mailto:guangming.zang@kaust.edu.sa" target="_blank">guangming.zang@kaust.edu.sa</a>></span>:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr"><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">Hi RTK community,</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">After i used FDK, SART, and ADMM to reconstruct several slices and visualize them, i think the geometry settings are correct from the scanner and the RTK.</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">However, when i want to reconstruct the whole volume(i.e., size of 1743*998*1761) by using any of FDK, SART, ADMM , the applications stopped working immediately. But when i changed it to only reconstruct half of the volume(i.e., 800*988*1761) it seems to be working fine(at least no pop up with an error displays). My machine's memory size is over 50 GB.. and when i ran these scanned data on my own application to reconstruct a whole volume, it works fine as well.</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">So can you help me to figure it out?</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">Regards</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff">Guangming</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;color:#0000ff"><br></div><div><div><div dir="ltr"><div><div dir="ltr"><font style="line-height:23.32400131225586px" face="arial, helvetica, sans-serif" color="#674ea7"><b><i>Guangming Zang (Alex)</i></b></font><div style="line-height:23.32400131225586px"><font face="arial, helvetica, sans-serif"><b><i><font color="#0b5394">King Abdullah University of Science and Technology</font><font color="#073763">(KAUST)</font></i></b></font></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i>University of Chinese Academy of Sciences(UCAS)</i></b></font></span><font face="arial, helvetica, sans-serif"><b><i><font color="#073763"><br></font></i></b></font></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.32400131225586px"><span style="font-family:arial;font-size:13px;line-height:20.020000457763672px"><font color="#0b5394"><b><i><br></i></b></font></span></div><div style="line-height:23.32400131225586px"><br></div></div></div></div></div></div>
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