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Found 38 results

  1. Hello! I'm trying to use an OpenCL node and the console pope up with the error in the subject line as soon as I click on it. Googling didn't help me--I updated my GPU drivers to no avail. I also added "HOUDINI_OCL_DEVICETYPE=GPU" to my .env file (per another forum), which didn't help. When I open the nVidia control panel to turn on OpenCL, it doesn't appear in any of the device manager settings, just OpenGL (and for the program-specific settings, Houdini doesn't appear at all). I'm running Windows 10 on a computer with decent horsepower and an RTX 2070 SUPER graphics card, so computer beefiness or up-to-date-ness shouldn't be a problem. I'm also running Houdini Indie (the latest build--18.5.499). Thanks for any help!
  2. fun and play with particles

    having some fun with particles.... birth of a massive star. for my little #astrophysics exploration, i’ve created a star simulation using openCL in houdini. its based on nbody #physics model, only driven by #gravity. using #nvidia #quadro rtx 5000 #arnoldrender. the colours are not quite right, I am trying to integrate kelvin colour temperature. the current colour is based on density and speed. In this simulation, I assumed 48% amount of negative gravity to fill the mystery of dark matter. I used 1 million nbodies for the simulation. for the steps, I am planning to add finer particle streams to get more details. fast particle rendering with path tracer is hard !
  3. Few nodes won't work on OpenCL

    Hello, I am trying to work with OpenCL but as soon I enable them on few nodes, like the gas disturb, gas turbulence, it stops working. I just get a mushroom smoke effect. Does openCL not work on these fields? I have attached some screenshots. The first image is without OpenCL, the second one is with smoke disturb disabled and the third image is with openCL enabled on Smoke disturb.
  4. Hi! I'm actually trying to get trough the tutorial series of Houdini "Destruction FX", and I need to use the Minimal OpenCl Solve for a Pyro Sim. But as soon as I turn it on, my console pops up with tons of errors showing up! I couldn't find something talking abt it on the internet as it is a pretty new feature, so if anyone knows how I could solve that it would be perfect. Here is the massive error message: In file included from C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include\CVDBUtil.h:31: C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:22:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[0] = floor(xyz->mVec[0]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:23:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[1] = floor(xyz->mVec[1]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:24:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[2] = floor(xyz->mVec[2]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:117:23: note: expanded from macro 'CREATE_LERPSIMPLE' cnanovdb_lerp##SUFFIX(VALUETYPE a, VALUETYPE b, float w) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:117:36: note: expanded from macro 'CREATE_LERPSIMPLE' cnanovdb_lerp##SUFFIX(VALUETYPE a, VALUETYPE b, float w) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:115:46: note: expanded from macro 'CREATE_LERPSIMPLE' #define CREATE_LERPSIMPLE(VALUETYPE, SUFFIX) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:234:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec -= 0.5; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:236:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec += 1.0; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:238:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec -= 0.5; ^ error: front end compiler failed build.clBuildProgram (-11) OpenCL Exception: In file included from :1: In file included from C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include\CVDBUtil.h:30: C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:84:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mMatD[9]; // r,c = 3*r + c ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:85:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mInvMatD[9]; // r,c = 3*r + c ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:86:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mVecD[3]; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:87:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mTaperD; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:221:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mBBox[6]; // 48B. floating-point bounds of active values in WORLD SPACE ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:222:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mVoxelSize[3]; // 24B. size of a voxel in world units ^ In file included from :1: In file included from C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include\CVDBUtil.h:31: C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:22:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[0] = floor(xyz->mVec[0]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:23:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[1] = floor(xyz->mVec[1]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:24:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[2] = floor(xyz->mVec[2]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:117:23: note: expanded from macro 'CREATE_LERPSIMPLE' cnanovdb_lerp##SUFFIX(VALUETYPE a, VALUETYPE b, float w) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:117:36: note: expanded from macro 'CREATE_LERPSIMPLE' cnanovdb_lerp##SUFFIX(VALUETYPE a, VALUETYPE b, float w) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:115:46: note: expanded from macro 'CREATE_LERPSIMPLE' #define CREATE_LERPSIMPLE(VALUETYPE, SUFFIX) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:234:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec -= 0.5; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:236:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec += 1.0; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:238:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec -= 0.5; ^ error: front end compiler failed build.clBuildProgram (-11) OpenCL Exception: In file included from :1: In file included from C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include\CVDBUtil.h:30: C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:84:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mMatD[9]; // r,c = 3*r + c ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:85:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mInvMatD[9]; // r,c = 3*r + c ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:86:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mVecD[3]; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:87:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mTaperD; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:221:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mBBox[6]; // 48B. floating-point bounds of active values in WORLD SPACE ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CNanoVDB.h:222:5: error: use of type 'double' requires cl_khr_fp64 extension to be enabled double mVoxelSize[3]; // 24B. size of a voxel in world units ^ In file included from :1: In file included from C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include\CVDBUtil.h:31: C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:22:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[0] = floor(xyz->mVec[0]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:23:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[1] = floor(xyz->mVec[1]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:24:41: warning: double precision constant requires cl_khr_fp64, casting to single precision coord->mVec[2] = floor(xyz->mVec[2]+0.5); ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:117:23: note: expanded from macro 'CREATE_LERPSIMPLE' cnanovdb_lerp##SUFFIX(VALUETYPE a, VALUETYPE b, float w) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:117:36: note: expanded from macro 'CREATE_LERPSIMPLE' cnanovdb_lerp##SUFFIX(VALUETYPE a, VALUETYPE b, float w) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:124:19: error: use of type 'double' requires cl_khr_fp64 extension to be enabled CREATE_LERPSIMPLE(double, D) ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:115:46: note: expanded from macro 'CREATE_LERPSIMPLE' #define CREATE_LERPSIMPLE(VALUETYPE, SUFFIX) \ ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:234:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec -= 0.5; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:236:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec += 1.0; ^ C:/PROGRA~1/SIDEEF~1/HOUDIN~1.351/houdini/ocl/include/CSampleFromVoxels.h:238:25: warning: double precision constant requires cl_khr_fp64, casting to single precision qxyz.mVec -= 0.5; ^ :103:19: warning: double precision constant requires cl_khr_fp64, casting to single precision if (s_speed < V_EPSILON && t_speed < V_EPSILON) ^ :90:19: note: expanded from macro 'V_EPSILON' #define V_EPSILON 1e-10 ^ :103:42: warning: double precision constant requires cl_khr_fp64, casting to single precision if (s_speed < V_EPSILON && t_speed < V_EPSILON) ^ :90:19: note: expanded from macro 'V_EPSILON' #define V_EPSILON 1e-10 ^ :106:24: warning: double precision constant requires cl_khr_fp64, casting to single precision else if (s_speed < V_EPSILON) ^ :90:19: note: expanded from macro 'V_EPSILON' #define V_EPSILON 1e-10 ^ :108:24: warning: double precision constant requires cl_khr_fp64, casting to single precision else if (t_speed < V_EPSILON) ^ :90:19: note: expanded from macro 'V_EPSILON' #define V_EPSILON 1e-10 ^ :118:22: warning: double precision constant requires cl_khr_fp64, casting to single precision if (dp > 1 - A_EPSILON) ^ :91:19: note: expanded from macro 'A_EPSILON' #define A_EPSILON 1e-5 ^ :124:22: warning: double precision constant requires cl_khr_fp64, casting to single precision if (dp < A_EPSILON - 1) ^ :91:19: note: expanded from macro 'A_EPSILON' #define A_EPSILON 1e-5 ^ error: front end compiler failed build.clBuildProgram (-11)
  5. OpenCl error 18.5

    Hi everyone, I'm testing the new 18.5 and after doing a pretty basic vellum sphere, I've this error, clBuildProgram (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Exception: clBuildProgram (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Exception: clEnqueueWriteBuffer (-5) OpenCL Context error: CL_OUT_OF_RESOURCES error executing CL_COMMAND_READ_BUFFER on GeForce RTX 2080 Ti (Device 0). OpenCL Exception: clEnqueueReadBuffer (-5) OpenCL Context error: CL_OUT_OF_RESOURCES error executing CL_COMMAND_READ_BUFFER on GeForce RTX 2080 Ti (Device 0). OpenCL Exception: clEnqueueReadBuffer (-5) OpenCL Context error: CL_OUT_OF_RESOURCES error executing CL_COMMAND_READ_BUFFER on GeForce RTX 2080 Ti (Device 0). OpenCL Exception: clEnqueueReadBuffer (-5)
  6. Hello, I'm trying to implement an OpenCL node that loops over "scatter1" node's points and changes density at the volume A's nearest voxel of every point. However, I can't figure out how to calculate the nearest voxel's index value. So I'd like to know how to calculate the voxel's index value. Also, in the "merge1" node, there is one point added by the volume A(Points count is increased by one after merging). Is there a way to exclude that point when looping over points? I attached my node setup and "opencl1" node's bindings setup below. Thank you.
  7. Force Directed Graph OpenCL

    Have Fun.. thanx + @t_hasegawa Twitter file +read In second example make attributes like in first ..it works For me https://github.com/d3/d3-force https://observablehq.com/@d3/force-directed-tree ForceDirectedGraph_v002t03(1).hipnc
  8. Hi, I am trying to make a cellular automata sim a la John Conway. The vex version works fine and I think it is true to the original; it runs the same each time for a given set of initial conditions, as you would expect. However, when I try to use the code in openCL there is some variation, from the first frame or whenever I 'Reset Simulation'. I can't work out where this variation comes from and why the algorithm doesn't run as you would expect. I have tried using int, and float for the parameters with 32 bit and 64 bit precision, this doesn't fix the problem. Is there some kind of rounding which happens in Open CL but not vex? Ideally I would like the VEX and Open CL versions to be the same - is that possible? Please see attached hip. Thanks so much. GOL_openCL_vex.hipnc
  9. CPU getting old?

    Hey : ) I have (as you can see in my signature) a old 4790k cpu, but a much newer rtx 2060. I just ran a pyro sim with openCL of 90 frames and it finished very quickly at 4 mins 30 seconds. When I use my cpu only (openCL off) it takes over 30 minutes to finish. Before I had my 2060, I was running a 970. OpenCL sims were faster than the cpu on that card too, but not that much faster. Is this just sign my I need to replace my cpu? The only reason I am hesitant is that I would also have to buy a new mother board and ram to go along with it. Thanks-------
  10. Houdini Pyro OpenCL Error

    Getting an error when trying to run a pyro sim with openCL: "gasturbulence1: Error: compute_turbulence_cl: Error: smokeobject1 - /obj/geo1/dopnet1/pyrosolver1/gasturbulence1/compute_turbulence_cl: Fields must be matching for OpenCL " Any ideas?
  11. Lambda SOP

    This operator allows you to call a collection of nodes on any data or simply no data (generators). It gives you full control over how the lambda function should be run.
  12. Audio files, FFT and OpenCL...

    Hey, I would like to do some work with audio file analysis and find chops very alien, limited and annoying, so wonder what would be involved if I'd want to do this without them. The elements of what I have in mind would be: Open a stereo wave file as raw data somehow. Analyse it using a FFT. The latter maybe in openCL for speed. Create geometry from the results. I'm looking for a direction on how to best tackle this in Houdini with the least unneeded overhead possible, so using existing libraries/examples would be preferred, adapting them to what I need... Thanks for any pointers! Cheers, Tom
  13. Can someone please give me an indepth explanation as to why the CPU vs GPU sims look different? I have noticed when making a fire sim, GPU gives a bit more streaky and jagged sim (better licks) than a CPU sim which tends to be a bit more billowy with more 'shrooms' or rounder shapes in general. Sadly GPU crashes on any large scale sims yet I really like the look. How can I get CPU sims to look as streaky and jagged as GPU? Any tricks to stop a GPU sim from crashing? Cheers!
  14. OpenCL Sim caching with multiple gpus

    Hi, is there anyway to cache my pyro sim in opencl with my 4 gpu (4xgt1080)? i couldn't find any preferences on houdini or topic in search. Thank you.
  15. N-body via SOP solver with OpenCL

    Here is it.:) nbody_opencl.hipnc
  16. OpenCL and Smoke Dual Rest

    During testing Dual Rest Fields in Smoke solver found out that "Gas Advect CL" (in OpenCL mode) doesn't want to advect "rest rest2" fields. Microsolver just shows warning: The same in H15.5 and 16 Google said nothing..
  17. I know GPU renderers take advantage of multiple GPU's, but does H16 OpenCL performance also benefit?
  18. what is the file: C:\Program Files\Side Effects Software\Houdini 16.0.633\bin\OpenCL\bin\x64\cl.cfg used for? Its just CL_CONFIG_GL_DIRECTX_INTEROP = False inside. What would happen if I set it to "True"? Maybe it s a solution for my problem on a dualgraphic Laptop, one Intel one Nviia, that just the Intel is used for OpenCL....
  19. opencl kernel DATA type question?

    In the opencl sop ,I just can't find the right data type for the ramp parameter. who can't help me !!
  20. OpenCL simulations on ADM GPU

    hi guys, sorry can't speak English well. I planning to buy new hardware for OpenCL simulations on GPU. I study a little about pro-GPUs computing performance and find some information in https://en.wikipedia.org/wiki/FLOPS "Built using commercially available parts. AMD Ryzen 7 1700 CPU combined with AMD Radeon Vega FE cards in CrossFire tops out at over 50 TFLOPS (OMGOD!!!) at just under US$3,000 for the complete system." is it right? Can combine two AMD Radeon Vega FE cards in CrossFire with CPU? Does it help to speed up simulations in Houdini? Which Single-precision or Double-precision floating-point is more important in Houdini? is it depend on 32bit or 64bit process in software? https://pro.radeon.com/en-us/product/radeon-vega-frontier-edition/ OpenCL™ 2.0 Support Enables professionals to tap into the parallel computing power of modern GPUs and multi-core CPUs to accelerate compute-intensive tasks in leading CAD/CAM/CAE and Media & Entertainment applications that support OpenCL. Does Houdini support OpenCL 2ver?
  21. Where to change opencl device

    Hey, can anybody tell me where I have to write this line "HOUDINI_OCL_DEVICENUMBER=1" in order to force houdini to use my second GPU and not the one plugged to the display? Its not doing anything when I pase this into the houdini.env file.
  22. Hi Curious why enabling 'OpenCL' in the Advanced TAB of my pyrosolver causes my sim to fail. What happens is theat when enabled, I can simulate about the first 30-40 frames of a smoke sim only. Is there some other OpenCL related setting in application preferences? AFAIK, OpenCL should be fully supported on my setup, Ubuntu Linux 16.04 and NVIDIA Titan X Pascal GPU. Possibly Nvidia driver related?
  23. OpenCL error

    Hello there, I've been trying to learn openCL and use it in houdini. To start I imported the position attribute and generated a kernel, but it keeps spitting out this error (without editing or adding things to the code) OpenCL Exception: clSetKernelArg (-51)
  24. Hi all, is it possible or a way to enable all my GPUs for OpenCL? i have 3x titan-x and a quadro m4000 total of 4 cards. thanks
  25. Hi, Please let me know if there is a simple setting in preference where we can enable or switch to GPU or OpenCL. I am not sure whether viewport uses GPU, I think it does and I would also like to know if we can directly switch a DOP node to use GPU for its calculations. Can Mantra and Arnold use GPU? Please let me know the specific settings. Thanks again.
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