<div dir="ltr"><div><div>Hi Chao,<br>Thanks for the report, it's new so we might have left special cases behind... sorry. Is this something that occurs when launching rtkfdk, rtkwangdisplaceddetectorweighting or one of your own applications?<br></div>It would be very useful if you could manage to reproduce this with a set of command lines that would simulate data first and then apply the weighting, similar to what's <a href="http://wiki.openrtk.org/index.php/RTK/Scripts/FDK" target="_blank">here</a> for example.<br></div>Regards,<br>Simon<br><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 10, 2014 at 10:58 AM, Chao Wu <span dir="ltr"><<a href="mailto:wuchao04@gmail.com" target="_blank">wuchao04@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi all,<div><br></div><div>I am trying the new cuda displaced detector filter but got cudaErrorLaunchFailure. This error was returned by cudaFree(dev_geom) at the end of the code, but since this error type is not registered with cudaFree(), it would be from previous, asynchronous launches. By using cudaDeviceSynchronize() I found the error coming after calling kernel_displaced_weight<<<...>>>(...).</div><div><br></div><div>One interesting thing is that when the error occurs depends on the number of projections processed at once (controlled by the --subset=N option of rtkfdk.exe for example). If I use subset=1 then it fails right with the first projection; if subset=2 it fails at the 16th run when processing the 31st and 32nd projections; if subset=4, at the 14th run; if subset=16 (default), at the 6th run; and so on.</div><div><br></div><div>The input region of each projection is about 1944x200 (the 2nd dimension differs a little bit of course) and the output region is then about 3888x200. A GTX580 card is used.</div><div><br></div><div>Any suggestions and comments on this? Thanks.</div><div><br></div><div>Regards,</div><div>Chao</div></div>
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