Guest tar Posted March 12, 2015 Share Posted March 12, 2015 all afaik - whilst AMD have a 64 bit driver - Dan of VortexVfx posted that it works out of the box. SideFX post: index.php Quote Link to comment Share on other sites More sharing options...
freaq Posted March 25, 2015 Share Posted March 25, 2015 Is that limited to windows or are we talking all platforms? "This contains eight billion transistors" and a 32 bit driver limiting OpenCL to 4GB can anyone answer this? and is this truly a fact? cause that would be a dealbreaker for me!!! Quote Link to comment Share on other sites More sharing options...
Guest tar Posted March 25, 2015 Share Posted March 25, 2015 (edited) Look for address_bits http://videocardz.com/55081/nvidia-geforce-gtx-titan-x-opencl-performance-leaks-out " NVIDIA GeForce GTX TITAN X OpenCL Name Value address_bits 32 compiler_available 1 double_fp_config CL_FP_DENORM CL_FP_INF_NAN CL_FP_ROUND_TO_NEAREST CL_FP_ROUND_TO_ZERO CL_FP_ROUND_TO_INF CL_FP_FMA driver_version 347.84" Johner's reply index.php EDIT: Here's the GTX980/4GB in Houdini. Check the Device Addess Bits for OpenCL OpenCL Platform Apple Platform Vendor Apple Platform Version OpenCL 1.2 (Dec 14 2014 22:29:47) OpenCL Device GeForce GTX 980 OpenCL Type GPU Device Version OpenCL 1.2 Frequency 1367 MHz Compute Units 16 Device Address Bits 32 Global Memory 4096 MB Max Allocation 1024 MB Global Cache 0 KB Max Constant Args 9 Max Constant Size 64 KB Local Mem Size 48 KB 2D Image Support 16384x16384 3D Image Support 2048x2048x2048 Edited March 25, 2015 by tar Quote Link to comment Share on other sites More sharing options...
Guest tar Posted April 20, 2015 Share Posted April 20, 2015 (edited) UPDATED: Currently a bug in Nvidia driver shows that at Kepler cards do not allow for more than 4GB in OpenCL. Game On! Nvidia is now 64bits & OpenCL 1.2 Driver 350.12.0.0 Platform Version OpenCL 1.2 CUDA 7.0.0 OpenCL Device GeForce GTX 980 OpenCL Type GPU Device Version OpenCL 1.2 CUDA Frequency 1367 MHz Compute Units 16 Device Address Bits 64 Edit: Even some improvement on 4GB cards! New: 3D Image Support 4096x4096x4096 Old: 3D Image Support 2048x2048x2048 Edited April 20, 2015 by tar Quote Link to comment Share on other sites More sharing options...
rayman Posted April 23, 2015 Share Posted April 23, 2015 Is this available for Linux? With 349.16.0.0 driver Houdini detects Device Address Bits 64 Global Memory 12287 MB on Titan X card. Is there any way to check if it is fully supported or just 4GB of it? Thanks! Quote Link to comment Share on other sites More sharing options...
pezetko Posted April 23, 2015 Share Posted April 23, 2015 There is OpenCL Smoke example in the help: http://www.sidefx.com/docs/houdini14.0/examples/nodes/dop/smokeobject/OpenCL Run this with high enough resolution and watch gpu vram consuption. On older NVidia cards it raised error (in H13.0.3xx) when it hit the 4GB ram limit in the drivers (was a litttle bit below 4 GB for nvidia gpus (that is somehere around 60 mil voxels), exact value depends on the card model and how much gpu ram is used elsewhere (hires monitors, other application consuming gpu resources etc.)) Quote Link to comment Share on other sites More sharing options...
rayman Posted April 23, 2015 Share Posted April 23, 2015 (edited) Thanks! I tested it with different resolutions (333³ , 400³ , 500³ , 1000³) and it seems to work, but when simulating above 64M voxels cached frames are the same as the first one. So I assume that there is still some limitation. At least it didn't crashed (: Edited April 23, 2015 by rayman Quote Link to comment Share on other sites More sharing options...
sanostol Posted April 24, 2015 Share Posted April 24, 2015 would be really cool to get some info of sidefx devs whats going on, would be too cool to use 12 gb for sims Quote Link to comment Share on other sites More sharing options...
johner Posted April 24, 2015 Share Posted April 24, 2015 I posted in this thread. Briefly we've submitted a bug to Nvidia, just waiting to hear back. Quote Link to comment Share on other sites More sharing options...
Guest tar Posted May 22, 2015 Share Posted May 22, 2015 (edited) Update: Latest driver is reported to be 64bit OpenCL on Linux for realsss! Awaiting tests on Windows if you have a 4GB+ card. Windows: OpenGL Renderer: GeForce GTX 980/PCIe/SSE2 OpenGL Version: 4.5.0 NVIDIA 352.86 Platform Version OpenCL 1.2 CUDA 7.5.8 Note: Flat Shaded bug is still present fixed in Houdini 14.0.344. Edited May 26, 2015 by tar Quote Link to comment Share on other sites More sharing options...
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