<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>Hi Zhang,<br> <br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="m_4329008810267175897gmail-m_-7397335887833978498western" style="margin-bottom:0in;line-height:100%">X Error of failed request: GLXBadContext</p><p class="m_4329008810267175897gmail-m_-7397335887833978498western" style="margin-bottom:0in;line-height:100%"> Major opcode of failed request: 135 (GLX)</p><p class="m_4329008810267175897gmail-m_-7397335887833978498western" style="margin-bottom:0in;line-height:100%"> Minor opcode of failed request: 5 (X_GLXMakeCurrent)</p><p class="m_4329008810267175897gmail-m_-7397335887833978498western" style="margin-bottom:0in;line-height:100%"> Serial number of failed request: 28</p><p class="m_4329008810267175897gmail-m_-7397335887833978498western" style="margin-bottom:0in;line-height:100%"> Current serial number in output stream: 28</p></blockquote><div><br><br></div><div>This is an indication that pvserver is not able to access an X server. How are you starting pvserver? Is it over ssh, vnc, running it directly from the server's console, etc? Does glxinfo work? i.e. what's your output from "glxinfo | grep OpenGL"? In order to access the GPUs you'll either need to use a running X server or EGL, depending on the NVidia driver version. What version fo the NVidia driver are you using? eg:<br><div style="margin-left:40px"><span style="font-family:monospace,monospace">$ nvidia-smi</span><br><span style="font-family:monospace,monospace">Wed Dec 28 08:57:03 2016 </span><br><span style="font-family:monospace,monospace">+-----------------------------<wbr>------------------------------<wbr>------------------+</span><br><span style="font-family:monospace,monospace">| NVIDIA-SMI 367.48 Driver Version: 367.48 |</span><br><span style="font-family:monospace,monospace">|-----------------------------<wbr>--+----------------------+----<wbr>------------------+</span><br><span style="font-family:monospace,monospace">| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |</span><br><span style="font-family:monospace,monospace">| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |</span><br><span style="font-family:monospace,monospace">|=============================<wbr>==+======================+====<wbr>==================|</span><br><span style="font-family:monospace,monospace">| 0 Tesla C2075 Off | 0000:03:00.0 Off | 0 |</span><br><span style="font-family:monospace,monospace">| 30% 63C P0 78W / N/A | 0MiB / 5300MiB | 0% Default |</span><br><span style="font-family:monospace,monospace">+-----------------------------<wbr>--+----------------------+----<wbr>------------------+</span><span style="font-family:monospace,monospace"> <wbr> <wbr> <wbr> </span><br><span style="font-family:monospace,monospace"></span></div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="m_4329008810267175897gmail-m_-7397335887833978498western" style="margin-bottom:0in;line-height:100%">The options of
VTK_RENDER_BACKEND:STRING are OpenGL,OpenGL2 and None. I don't no
what's the difference between the first two options but the OpenGL
version on my server is 4.4.0 and on my PC it's 4.5.0.</p></blockquote><div><br></div><div>This is certainly a confusing option. It's not actually referring the the version of OpenGL that's getting used but the version of VTK's OpenGL backend. The OpenGL backend is the first generation of our renbdering backend and uses OpenGL v1.2. The OpenGL2 backend is the second generation of our rendering backend and uses OpenGL v3.3.<br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p class="m_4329008810267175897gmail-m_-7397335887833978498western" style="margin-bottom:0in;line-height:100%">Fontconfig warning: "/etc/fonts/conf.d/<a href="http://45-latin.co">45-latin.co</a><wbr>nf", line 39: Having multiple <family> in <alias> isn't supported and may not work as expected<br>Fontconfig warning: "/etc/fonts/conf.d/<a href="http://45-latin.co">45-latin.co</a><wbr>nf", line 56: Having multiple <family> in <alias> isn't supported and may not work as expected</p></blockquote><div><br></div><div>These are an artifact of ParaView 5.2 using a newer fontconfig library than the system. For reasons outside of the scope here, it's not likely to get fixed. However, it should go away when running on a newer Linux distro. It's nothing to worry about and can be safely ignored.<br><br><br></div>- Chuck<br></div><div class="gmail_quote"><br></div><br></div></div>