2 Replies Latest reply on Sep 20, 2018 10:28 AM by predivan

    [rpr-1.7] Blank page when trying to render ('Check log for details')

    predivan

      This is a similar issue to ProRender for blender Rendering not showing anything,[pc, windows 10, all drivers up to date and my machine meets the system requirements] but it is giving error, "Check Log for details" please help fix this , but

      on Linux and with Nvidia card

      First I must mention that this is on a unsupported Linux distribution, so I don't expect the developers attention (I suspect they have their hands full already),

      this is more of a possible bug report for reference.

      Some version info:

         -  RPR version 1.7.212 (core 1.312)

           - Nvidia GT-640 (yes, I know , can't afford AMD at the moment) binary driver 396.54

           clinfo shows it as OpenCL-1.2 capable

       

      Installing rpr was pretty straightforward:

      - extract the .run file

      - install the addon from within Blender

      - activate it

      - add RPR_MATERIAL_LIBRARY_PATH as a environment variable

      (couldn't figure out the proper path to copy it too, rpr in Blender kept complaining that it can't find it

      without setting env variable).

      Since the version of Blender (2.79 built from upstream master branch (I can dig up the exact commit, if you are interested)) is

      using system python3, I removed cffi_backend.cpython-35m-x86_64-linux-gnu.so and libffi-72499c49.so.6.0.4

      libraries from rprblender directory (system versions are 1.3.1 and 3.2.1).

      Btw, I've seen in install.py  embree and openimageio as dependencies.

      I do have openimageio-1.8.14 installed, but no embree.

       

      Two issues:

      - Can't apply any materials (object just turns bright white)

      - When I try to render, blank page with the 'Check log for details' shows

      I think this is the relevant portion from the rprblender.log

      2018-09-16 16:05:49,776 rpr.default [139757202622080]: INFO ui.register()

      2018-09-16 16:05:49,778 rpr.default [139757202622080]: INFO material_browser.register

      2018-09-16 16:05:49,779 rpr.addon [139757202622080]: INFO Try: Emulate load_post...

      2018-09-16 16:05:49,779 rpr.default [139757202622080]: INFO rpr.register - done

      2018-09-16 16:05:49,779 rpr.default [139757202622080]: INFO load_post...

      2018-09-16 16:05:49,780 rpr.default [139757202622080]: INFO File was saved by unknown addon version

      2018-09-16 16:05:49,781 rpr.default [139757202622080]: INFO Automatic save user preferences...

      2018-09-16 16:05:49,783 rpr.default [139757202622080]: INFO /home/pedja/.config/blender/2.79/scripts/addons/rprblender/images.py load_post

      2018-09-16 16:05:57,593 rpr.default [139755841304320]: INFO DownloadAddonJsonThread started...

      2018-09-16 16:05:57,593 rpr.default [139755841304320]: INFO Download from:  https://radeon-prorender.github.io/rpr_renderer_plugin_blender_latest_version.json

      2018-09-16 16:05:57,797 rpr.default [139755841304320]: ERROR Can't download json file.

      2018-09-16 16:05:57,799 rpr.default [139755841304320]: INFO DownloadAddonJsonThread finished.

      2018-09-16 16:15:57,738 rpr.default [139755841304320]: INFO using GPU(0): "GeForce GT 640"

      2018-09-16 16:15:57,738 rpr.default [139755841304320]: INFO total used 1 gpu, flags(1)

      2018-09-16 16:15:57,739 rpr.default [139755841304320]: INFO tracing: off

      2018-09-16 16:15:58,026 rpr.default [139755841304320]: INFO camera.focal_length:  30.0

      2018-09-16 16:15:58,026 rpr.default [139755841304320]: INFO camera.sensor_size: (32.0, 32.0)

      2018-09-16 16:15:58,033 rpr.default [139755841304320]: INFO RenderLayers create...

      2018-09-16 16:15:58,033 rpr.default [139755841304320]: INFO added aov: default

      2018-09-16 16:15:58,042 rpr.material [139755841304320]: WARNING Parse : Can't get output node, return error shader (material: Material)

      2018-09-16 16:15:58,043 rpr.image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:15:58,043 rpr.downscaled_image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:15:58,043 rpr.core_image_cache [139755841304320]: INFO CoreImageCache(original): image_size=None, contexts number=0

      2018-09-16 16:15:58,043 rpr.core_downscaled_image_cache [139755841304320]: INFO CoreImageCache(downscaled): image_size=None, contexts number=0

      2018-09-16 16:15:58,082 rpr.render [139755333342976]: CRITICAL Traceback (most recent call last):

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/__init__.py", line 25, in core_operations

          yield

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 292, in _render_proc

          pyrpr.ContextRender(self.get_core_context())

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/pyrpr.py", line 57, in wrapped

          raise CoreError(status, f.__name__, argv, module_name)

      pyrpr.CoreError: RPR call ContextRender(<pyrpr.Context object at 0x7f1b8c9ddda0>) returned error code <ERROR_OPENCL<-26>> with error message: 'b'TahoeContext: render failed //// TAHOEERROR: FILE=../Adl/CL/AdlKernelUtilsCL.cpp LINE=409 MESSAGE=ADLASSERT  //// FREXCEPTION : FILE=../Tahoe/Renderer.cpp LINE=707 ERROR=-26 ////''

       

      2018-09-16 16:15:58,146 rpr.render [139755841304320]: CRITICAL ERROR: It is recommended to restart Blender

      render failed

      2018-09-16 16:16:00,379 rpr.default [139755841304320]: INFO using GPU(0): "GeForce GT 640"

      2018-09-16 16:16:00,379 rpr.default [139755841304320]: INFO total used 1 gpu, flags(1)

      2018-09-16 16:16:00,381 rpr.default [139755841304320]: INFO camera.focal_length:  30.0

      2018-09-16 16:16:00,382 rpr.default [139755841304320]: INFO camera.sensor_size: (32.0, 32.0)

      2018-09-16 16:16:00,383 rpr.default [139755841304320]: INFO RenderLayers create...

      2018-09-16 16:16:00,383 rpr.default [139755841304320]: INFO added aov: default

      2018-09-16 16:16:00,394 rpr.image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:16:00,394 rpr.downscaled_image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:16:00,395 rpr.core_image_cache [139755841304320]: INFO CoreImageCache(original): image_size=None, contexts number=0

      2018-09-16 16:16:00,395 rpr.core_downscaled_image_cache [139755841304320]: INFO CoreImageCache(downscaled): image_size=None, contexts number=0

      2018-09-16 16:16:00,414 rpr.render [139755324950272]: CRITICAL Traceback (most recent call last):

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/__init__.py", line 25, in core_operations

          yield

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 292, in _render_proc

          pyrpr.ContextRender(self.get_core_context())

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/pyrpr.py", line 57, in wrapped

          raise CoreError(status, f.__name__, argv, module_name)

      pyrpr.CoreError: RPR call ContextRender(<pyrpr.Context object at 0x7f1b8c9ddda0>) returned error code <ERROR_OPENCL<-26>> with error message: 'b'TahoeContext: render failed //// TAHOEERROR: FILE=../Adl/CL/AdlKernelUtilsCL.cpp LINE=409 MESSAGE=ADLASSERT  //// FREXCEPTION : FILE=../Tahoe/Renderer.cpp LINE=707 ERROR=-26 ////''

       

      2018-09-16 16:16:00,497 rpr.render [139755841304320]: CRITICAL ERROR: It is recommended to restart Blender

      render failed

      2018-09-16 16:16:42,930 rpr.default [139755841304320]: INFO using GPU(0): "GeForce GT 640"

      2018-09-16 16:16:42,930 rpr.default [139755841304320]: INFO total used 1 gpu, flags(1)

      2018-09-16 16:16:42,933 rpr.default [139755841304320]: INFO camera.focal_length:  30.0

      2018-09-16 16:16:42,933 rpr.default [139755841304320]: INFO camera.sensor_size: (32.0, 32.0)

      2018-09-16 16:16:42,935 rpr.default [139755841304320]: INFO RenderLayers create...

      2018-09-16 16:16:42,935 rpr.default [139755841304320]: INFO added aov: default

      2018-09-16 16:16:42,945 rpr.image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:16:42,945 rpr.downscaled_image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:16:42,945 rpr.core_image_cache [139755841304320]: INFO CoreImageCache(original): image_size=None, contexts number=0

      2018-09-16 16:16:42,945 rpr.core_downscaled_image_cache [139755841304320]: INFO CoreImageCache(downscaled): image_size=None, contexts number=0

      2018-09-16 16:16:43,031 rpr.default [139755841304320]: INFO using GPU(0): "GeForce GT 640"

      2018-09-16 16:16:43,032 rpr.default [139755841304320]: INFO total used 1 gpu, flags(1)

      2018-09-16 16:16:43,034 rpr.default [139755841304320]: INFO camera.focal_length:  30.0

      2018-09-16 16:16:43,034 rpr.default [139755841304320]: INFO camera.sensor_size: (32.0, 32.0)

      2018-09-16 16:16:43,035 rpr.default [139755841304320]: INFO RenderLayers create...

      2018-09-16 16:16:43,035 rpr.default [139755841304320]: INFO added aov: default

      2018-09-16 16:16:43,044 rpr.image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:16:43,044 rpr.downscaled_image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:16:43,045 rpr.core_image_cache [139755841304320]: INFO CoreImageCache(original): image_size=None, contexts number=0

      2018-09-16 16:16:43,045 rpr.core_downscaled_image_cache [139755841304320]: INFO CoreImageCache(downscaled): image_size=None, contexts number=0

      2018-09-16 16:16:43,073 rpr.render [139755324950272]: CRITICAL Traceback (most recent call last):

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/__init__.py", line 25, in core_operations

          yield

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 292, in _render_proc

          pyrpr.ContextRender(self.get_core_context())

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/pyrpr.py", line 57, in wrapped

          raise CoreError(status, f.__name__, argv, module_name)

      pyrpr.CoreError: RPR call ContextRender(<pyrpr.Context object at 0x7f1b8c9ddda0>) returned error code <ERROR_OPENCL<-26>> with error message: 'b'TahoeContext: render failed //// TAHOEERROR: FILE=../Adl/CL/AdlKernelUtilsCL.cpp LINE=409 MESSAGE=ADLASSERT  //// FREXCEPTION : FILE=../Tahoe/Renderer.cpp LINE=707 ERROR=-26 ////''

       

      2018-09-16 16:16:43,148 rpr.render [139755841304320]: CRITICAL ERROR: It is recommended to restart Blender

      render failed

      2018-09-16 16:17:02,533 rpr.default [139755841304320]: INFO using GPU(0): "GeForce GT 640"

      2018-09-16 16:17:02,533 rpr.default [139755841304320]: INFO total used 1 gpu, flags(1)

      2018-09-16 16:17:02,536 rpr.default [139755841304320]: INFO camera.focal_length:  30.0

      2018-09-16 16:17:02,536 rpr.default [139755841304320]: INFO camera.sensor_size: (32.0, 32.0)

      2018-09-16 16:17:02,538 rpr.default [139755841304320]: INFO RenderLayers create...

      2018-09-16 16:17:02,539 rpr.default [139755841304320]: INFO added aov: default

      2018-09-16 16:17:02,549 rpr.image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:17:02,549 rpr.downscaled_image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:17:02,549 rpr.core_image_cache [139755841304320]: INFO CoreImageCache(original): image_size=None, contexts number=0

      2018-09-16 16:17:02,549 rpr.core_downscaled_image_cache [139755841304320]: INFO CoreImageCache(downscaled): image_size=None, contexts number=0

      2018-09-16 16:17:02,578 rpr.render [139755324950272]: CRITICAL Traceback (most recent call last):

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/__init__.py", line 25, in core_operations

          yield

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 292, in _render_proc

          pyrpr.ContextRender(self.get_core_context())

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/pyrpr.py", line 57, in wrapped

          raise CoreError(status, f.__name__, argv, module_name)

      pyrpr.CoreError: RPR call ContextRender(<pyrpr.Context object at 0x7f1b8c9ddda0>) returned error code <ERROR_OPENCL<-26>> with error message: 'b'TahoeContext: render failed //// TAHOEERROR: FILE=../Adl/CL/AdlKernelUtilsCL.cpp LINE=409 MESSAGE=ADLASSERT  //// FREXCEPTION : FILE=../Tahoe/Renderer.cpp LINE=707 ERROR=-26 ////''

       

      2018-09-16 16:17:02,652 rpr.render [139755841304320]: CRITICAL ERROR: It is recommended to restart Blender

      render failed

      2018-09-16 16:17:11,898 rpr.default [139755841304320]: INFO using GPU(0): "GeForce GT 640"

      2018-09-16 16:17:11,898 rpr.default [139755841304320]: INFO total used 1 gpu, flags(1)

      2018-09-16 16:17:11,900 rpr.default [139755841304320]: INFO camera.focal_length:  30.0

      2018-09-16 16:17:11,900 rpr.default [139755841304320]: INFO camera.sensor_size: (32.0, 32.0)

      2018-09-16 16:17:11,901 rpr.default [139755841304320]: INFO RenderLayers create...

      2018-09-16 16:17:11,902 rpr.default [139755841304320]: INFO added aov: default

      2018-09-16 16:17:11,912 rpr.image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:17:11,912 rpr.downscaled_image_cache [139755841304320]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:17:11,912 rpr.core_image_cache [139755841304320]: INFO CoreImageCache(original): image_size=None, contexts number=0

      2018-09-16 16:17:11,912 rpr.core_downscaled_image_cache [139755841304320]: INFO CoreImageCache(downscaled): image_size=None, contexts number=0

      2018-09-16 16:17:11,929 rpr.render [139755324950272]: CRITICAL Traceback (most recent call last):

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/__init__.py", line 25, in core_operations

          yield

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 292, in _render_proc

          pyrpr.ContextRender(self.get_core_context())

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/pyrpr.py", line 57, in wrapped

          raise CoreError(status, f.__name__, argv, module_name)

      pyrpr.CoreError: RPR call ContextRender(<pyrpr.Context object at 0x7f1b8c9ddda0>) returned error code <ERROR_OPENCL<-26>> with error message: 'b'TahoeContext: render failed //// TAHOEERROR: FILE=../Adl/CL/AdlKernelUtilsCL.cpp LINE=409 MESSAGE=ADLASSERT  //// FREXCEPTION : FILE=../Tahoe/Renderer.cpp LINE=707 ERROR=-26 ////''

       

      2018-09-16 16:17:12,014 rpr.render [139755841304320]: CRITICAL ERROR: It is recommended to restart Blender

      render failed

      2018-09-16 16:17:18,379 rpr.default [139757202622080]: INFO using GPU(0): "GeForce GT 640"

      2018-09-16 16:17:18,380 rpr.default [139757202622080]: INFO total used 1 gpu, flags(1)

      2018-09-16 16:17:18,380 rpr.default [139757202622080]: INFO tracing: off

      2018-09-16 16:17:18,662 rpr.default [139757202622080]: INFO RenderLayers create...

      2018-09-16 16:17:18,662 rpr.default [139757202622080]: INFO added aov: default

      2018-09-16 16:17:18,670 rpr.image_cache [139757202622080]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:17:18,670 rpr.downscaled_image_cache [139757202622080]: INFO images: 0, total size: 0.0Mb, requests:0, request per image: -, virtual size requested: 0.0 Mb

      2018-09-16 16:17:18,670 rpr.core_image_cache [139757202622080]: INFO CoreImageCache(original): image_size=None, contexts number=0

      2018-09-16 16:17:18,670 rpr.core_downscaled_image_cache [139757202622080]: INFO CoreImageCache(downscaled): image_size=None, contexts number=0

      2018-09-16 16:17:18,708 rpr.render [139757202622080]: CRITICAL Traceback (most recent call last):

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/__init__.py", line 25, in core_operations

          yield

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 335, in get_image

          im = self._get_aov_image(aov_name)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 424, in _get_aov_image

          return self.render_targets.get_resolved_image(frame_buffer)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/device.py", line 142, in get_resolved_image

          pyrpr.ContextResolveFrameBuffer(self.render_device.core_context, fb, self.frame_buffer_tonemapped, False)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/pyrpr.py", line 57, in wrapped

          raise CoreError(status, f.__name__, argv, module_name)

      pyrpr.CoreError: RPR call ContextResolveFrameBuffer(<pyrpr.Context object at 0x7f1b8c65be48>, <pyrpr.FrameBuffer object at 0x7f1b8c65bcf8>, <pyrpr.FrameBuffer object at 0x7f1b8c65bb00>, False) returned error code <ERROR_INTERNAL_ERROR<-18>> with error message: 'b"TahoeContext: can't resolve framebuffer //// TAHOEERROR: FILE=../Adl/CL/AdlKernelUtilsCL.cpp LINE=177 MESSAGE=ADLASSERT  //// FREXCEPTION : FILE=../Tahoe/Renderer.cpp LINE=939 ERROR=-18 ////"'

       

      2018-09-16 16:17:18,709 rpr.render [139757202622080]: CRITICAL ERROR: It is recommended to restart Blender

      Exception: Traceback (most recent call last):

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/engine.py", line 483, in view_draw

          self._view_draw(context)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/helpers.py", line 436, in wrapped

          return f(*argv, **kwargs)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/engine.py", line 559, in _view_draw

          im = viewport_renderer.get_image(viewport_renderer.render_aov.pass_displayed)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/viewport.py", line 45, in get_image

          return self.scene_renderer.get_image(pass_name)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/helpers.py", line 436, in wrapped

          return f(*argv, **kwargs)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 335, in get_image

          im = self._get_aov_image(aov_name)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 424, in _get_aov_image

          return self.render_targets.get_resolved_image(frame_buffer)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/device.py", line 142, in get_resolved_image

          pyrpr.ContextResolveFrameBuffer(self.render_device.core_context, fb, self.frame_buffer_tonemapped, False)

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/pyrpr.py", line 57, in wrapped

          raise CoreError(status, f.__name__, argv, module_name)

      pyrpr.CoreError: RPR call ContextResolveFrameBuffer(<pyrpr.Context object at 0x7f1b8c65be48>, <pyrpr.FrameBuffer object at 0x7f1b8c65bcf8>, <pyrpr.FrameBuffer object at 0x7f1b8c65bb00>, False) returned error code <ERROR_INTERNAL_ERROR<-18>> with error message: 'b"TahoeContext: can't resolve framebuffer //// TAHOEERROR: FILE=../Adl/CL/AdlKernelUtilsCL.cpp LINE=177 MESSAGE=ADLASSERT  //// FREXCEPTION : FILE=../Tahoe/Renderer.cpp LINE=939 ERROR=-18 ////"'

       

      2018-09-16 16:17:18,765 rpr.render [139755006191360]: CRITICAL Traceback (most recent call last):

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/__init__.py", line 25, in core_operations

          yield

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/render/scene.py", line 292, in _render_proc

          pyrpr.ContextRender(self.get_core_context())

        File "/home/pedja/.config/blender/2.79/scripts/addons/rprblender/pyrpr.py", line 57, in wrapped

          raise CoreError(status, f.__name__, argv, module_name)

      pyrpr.CoreError: RPR call ContextRender(<pyrpr.Context object at 0x7f1b8c65be48>) returned error code <ERROR_OPENCL<-26>> with error message: 'b'TahoeContext: render failed //// TAHOEERROR: FILE=../Adl/CL/AdlKernelUtilsCL.cpp LINE=409 MESSAGE=ADLASSERT  //// FREXCEPTION : FILE=../Tahoe/Renderer.cpp LINE=707 ERROR=-26 ////''

       

       

      tahoe.log is empty

      If you need more logs or any other additional information, just ask

      RPR looks very interesting, I'd love to play with it sometime.

      And kudos for making it vendor-neutral, even though  some vendors are not particular fans of OpenCL *khm**khm*

        • Re: [rpr-1.7] Blank page when trying to render ('Check log for details')
          bsavery

          So I do not know NVidia drivers on linux as well, but is there a way to verify that the driver that you have supports OpenCL?

            • Re: [rpr-1.7] Blank page when trying to render ('Check log for details')
              predivan

              bsavery wrote:

               

              So I do not know NVidia drivers on linux as well, but is there a way to verify that the driver that you have supports OpenCL?

              That is what is confusing me about this.

              Several other applications  that also use OpenCL work fine, and their opencl tests show no errors,

              like Darktable or Gimp.

              Here is the output of clinfo, you might spot something fishy/missing in it

              Number of platforms                               1

                Platform Name                                   NVIDIA CUDA

                Platform Vendor                                 NVIDIA Corporation

                Platform Version                                OpenCL 1.2 CUDA 9.2.210

                Platform Profile                                FULL_PROFILE

                Platform Extensions                             cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer

                Platform Extensions function suffix             NV

               

                Platform Name                                   NVIDIA CUDA

              Number of devices                                 1

                Device Name                                     GeForce GT 640

                Device Vendor                                   NVIDIA Corporation

                Device Vendor ID                                0x10de

                Device Version                                  OpenCL 1.2 CUDA

                Driver Version                                  396.54

                Device OpenCL C Version                         OpenCL C 1.2

                Device Type                                     GPU

                Device Topology (NV)                            PCI-E, 01:00.0

                Device Profile                                  FULL_PROFILE

                Device Available                                Yes

                Compiler Available                              Yes

                Linker Available                                Yes

                Max compute units                               2

                Max clock frequency                             1045MHz

                Compute Capability (NV)                         3.0

                Device Partition                                (core)

                  Max number of sub-devices                     1

                  Supported partition types                     None

                  Supported affinity domains                    (n/a)

                Max work item dimensions                        3

                Max work item sizes                             1024x1024x64

                Max work group size                             1024

                Preferred work group size multiple              32

                Warp size (NV)                                  32

                Preferred / native vector sizes                

                  char                                                 1 / 1      

                  short                                                1 / 1      

                  int                                                  1 / 1      

                  long                                                 1 / 1      

                  half                                                 0 / 0        (n/a)

                  float                                                1 / 1      

                  double                                               1 / 1        (cl_khr_fp64)

                Half-precision Floating-point support           (n/a)

                Single-precision Floating-point support         (core)

                  Denormals                                     Yes

                  Infinity and NANs                             Yes

                  Round to nearest                              Yes

                  Round to zero                                 Yes

                  Round to infinity                             Yes

                  IEEE754-2008 fused multiply-add               Yes

                  Support is emulated in software               No

                  Correctly-rounded divide and sqrt operations  Yes

                Double-precision Floating-point support         (cl_khr_fp64)

                  Denormals                                     Yes

                  Infinity and NANs                             Yes

                  Round to nearest                              Yes

                  Round to zero                                 Yes

                  Round to infinity                             Yes

                  IEEE754-2008 fused multiply-add               Yes

                  Support is emulated in software               No

                Address bits                                    64, Little-Endian

                Global memory size                              2096693248 (1.953GiB)

                Error Correction support                        No

                Max memory allocation                           524173312 (499.9MiB)

                Unified memory for Host and Device              No

                Integrated memory (NV)                          No

                Minimum alignment for any data type             128 bytes

                Alignment of base address                       4096 bits (512 bytes)

                Global Memory cache type                        Read/Write

                Global Memory cache size                        32768 (32KiB)

                Global Memory cache line size                   128 bytes

                Image support                                   Yes

                  Max number of samplers per kernel             32

                  Max size for 1D images from buffer            134217728 pixels

                  Max 1D or 2D image array size                 2048 images

                  Max 2D image size                             16384x16384 pixels

                  Max 3D image size                             4096x4096x4096 pixels

                  Max number of read image args                 256

                  Max number of write image args                16

                Local memory type                               Local

                Local memory size                               49152 (48KiB)

                Registers per block (NV)                        65536

                Max number of constant args                     9

                Max constant buffer size                        65536 (64KiB)

                Max size of kernel argument                     4352 (4.25KiB)

                Queue properties                               

                  Out-of-order execution                        Yes

                  Profiling                                     Yes

                Prefer user sync for interop                    No

                Profiling timer resolution                      1000ns

                Execution capabilities                         

                  Run OpenCL kernels                            Yes

                  Run native kernels                            No

                  Kernel execution timeout (NV)                 Yes

                Concurrent copy and kernel execution (NV)       Yes

                  Number of async copy engines                  1

                printf() buffer size                            1048576 (1024KiB)

                Built-in kernels                                (n/a)

                Device Extensions                               cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_fp64 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts cl_nv_create_buffer

               

               

              NULL platform behavior

                clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  No platform

                clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   No platform

                clCreateContext(NULL, ...) [default]            No platform

                clCreateContext(NULL, ...) [other]              Success [NV]

                clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  No platform

                clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No platform

                clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  No platform

                clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No platform

                clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No platform

                clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  No platform

               

               

               

              I have CUDA-9.2 installed, since I use it for Cycles in Blender, if that's relevant.

              I forgot to say before, but the same thing happens if I use the official Blender binary, I just modified

              install.py not to install packages, since this is not a Ubuntu machine.