Problems with texture transparency and segfault using GPU module/device

[player1537]

Hi again RenderKit team 👋

I'm doing a project using OSPRay for our Intel Center of Excellence program. The core idea is to create a rendering service/web API for visualizing biodiversity and energy efficiency data at a city scale.

We're at the phase of our project now where we have enough data (geometry, textures, etc) that we need to use the OSPRay GPU module/device.

During my testing, I noticed some weird rendering artifacts:

Initial symptom of the problem

Since then, I've tried to create a minimal reproducible example, and I've broken our problem down into a problem with textures. There are two symptoms:

First, on GPU, my texture maps are partly-to-mostly transparent. The amount and location of transparency is related to the texture size. In general, for a texture of size N, the first 1/N is only partially transparent and the remaining texture is varying degrees of mostly transparent.

Second, on GPU, copying the data for a 19x19 texture crashes OSPRay with a segfault inside a memcpy, inside ospray::Data::copy().

---

I did something kind of weird: my script to reproduce this problem is in Python using a ctypes-based wrapper around OSPRay. Everything works perfectly fine using the CPU device, so I don't believe the problem is related to my wrapper.

The source code for the script is in https://github.com/player1537-playground/OSPRay-GPU-Texture-Problem in the test.py file.

test.py has a small amount of documentation at the top, but the short form is:

0. I am using an Intel Dev Cloud machine, specifically:

Intel® Max Series GPU (PVC) on 4th Gen Intel® Xeon® processors – 1100 series (8x)

SYCL Devices

sdp@university-of-tennessee-seelab:~/src/OSPRay-GPU-Texture-Problem$ sycl-ls
[opencl:acc:0] Intel(R) FPGA Emulation Platform for OpenCL(TM), Intel(R) FPGA Emulation Device OpenCL 1.2  [2023.16.12.0.12_195853.xmain-hotfix]
[opencl:cpu:1] Intel(R) OpenCL, Intel(R) Xeon(R) Platinum 8468V OpenCL 3.0 (Build 0) [2023.16.12.0.12_195853.xmain-hotfix]
[opencl:cpu:2] Intel(R) OpenCL, Intel(R) Xeon(R) Platinum 8468V OpenCL 3.0 (Build 0) [2023.16.10.0.17_160000]
[opencl:gpu:3] Intel(R) OpenCL Graphics, Intel(R) Data Center GPU Max 1100 OpenCL 3.0 NEO  [23.35.27191.42]
[opencl:gpu:4] Intel(R) OpenCL Graphics, Intel(R) Data Center GPU Max 1100 OpenCL 3.0 NEO  [23.35.27191.42]
[opencl:gpu:5] Intel(R) OpenCL Graphics, Intel(R) Data Center GPU Max 1100 OpenCL 3.0 NEO  [23.35.27191.42]
[opencl:gpu:6] Intel(R) OpenCL Graphics, Intel(R) Data Center GPU Max 1100 OpenCL 3.0 NEO  [23.35.27191.42]
[opencl:gpu:7] Intel(R) OpenCL Graphics, Intel(R) Data Center GPU Max 1100 OpenCL 3.0 NEO  [23.35.27191.42]
[opencl:gpu:8] Intel(R) OpenCL Graphics, Intel(R) Data Center GPU Max 1100 OpenCL 3.0 NEO  [23.35.27191.42]
[opencl:gpu:9] Intel(R) OpenCL Graphics, Intel(R) Data Center GPU Max 1100 OpenCL 3.0 NEO  [23.35.27191.42]
[opencl:gpu:10] Intel(R) OpenCL Graphics, Intel(R) Data Center GPU Max 1100 OpenCL 3.0 NEO  [23.35.27191.42]
[ext_oneapi_level_zero:gpu:0] Intel(R) Level-Zero, Intel(R) Data Center GPU Max 1100 1.3 [1.3.27191]
[ext_oneapi_level_zero:gpu:1] Intel(R) Level-Zero, Intel(R) Data Center GPU Max 1100 1.3 [1.3.27191]
[ext_oneapi_level_zero:gpu:2] Intel(R) Level-Zero, Intel(R) Data Center GPU Max 1100 1.3 [1.3.27191]
[ext_oneapi_level_zero:gpu:3] Intel(R) Level-Zero, Intel(R) Data Center GPU Max 1100 1.3 [1.3.27191]
[ext_oneapi_level_zero:gpu:4] Intel(R) Level-Zero, Intel(R) Data Center GPU Max 1100 1.3 [1.3.27191]
[ext_oneapi_level_zero:gpu:5] Intel(R) Level-Zero, Intel(R) Data Center GPU Max 1100 1.3 [1.3.27191]
[ext_oneapi_level_zero:gpu:6] Intel(R) Level-Zero, Intel(R) Data Center GPU Max 1100 1.3 [1.3.27191]
[ext_oneapi_level_zero:gpu:7] Intel(R) Level-Zero, Intel(R) Data Center GPU Max 1100 1.3 [1.3.27191]

1. Load the oneAPI environment

My oneAPI environment

sdp@university-of-tennessee-seelab:~/src/OSPRay-GPU-Texture-Problem$ ls -lah /opt/intel/oneapi/*/
/opt/intel/oneapi/2024.0/:
total 128K
drwxr-xr-x 12 root root 4.0K Mar 19 05:26 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  4 root root  12K Mar 19 05:26 bin
drwxr-xr-x 20 root root 4.0K Mar 19 05:26 etc
drwxr-xr-x 24 root root  12K Mar 19 05:26 include
drwxr-xr-x 12 root root  32K Mar 19 05:26 lib
drwxr-xr-x  3 root root 4.0K Mar 19 05:26 lib32
lrwxrwxrwx  1 root root   17 Mar 19 05:17 libfabric -> opt/mpi/libfabric
drwxr-xr-x  3 root root 4.0K Mar 19 05:08 licensing
drwxr-xr-x  2 root root 4.0K Mar 19 05:17 linux
drwxr-xr-x  2 root root 4.0K Mar 19 05:08 modulefiles
-rw-r--r--  2 root root  25K Oct 11  2023 oneapi-vars.sh
drwxr-xr-x 10 root root 4.0K Mar 19 05:18 opt
lrwxrwxrwx  1 root root   56 Mar 19 05:26 readme-get-started-linux-base-kit.html -> ../basekit/2024.0/readme-get-started-linux-base-kit.html
lrwxrwxrwx  1 root root   54 Mar 19 05:26 readme-get-started-linux-hpc-kit.html -> ../hpckit/2024.0/readme-get-started-linux-hpc-kit.html
lrwxrwxrwx  1 root root   60 Mar 19 05:26 readme-get-started-linux-render-kit.html -> ../renderkit/2024.0/readme-get-started-linux-render-kit.html
drwxr-xr-x 10 root root 4.0K Mar 19 05:17 share

/opt/intel/oneapi/2024.1/:
total 80K
drwxr-xr-x 10 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  4 root root 4.0K May 14 23:50 bin
drwxr-xr-x  8 root root 4.0K May 14 23:50 etc
drwxr-xr-x 11 root root 4.0K May 14 23:50 include
drwxr-xr-x  6 root root  12K May 14 23:50 lib
drwxr-xr-x  3 root root 4.0K May 14 23:50 lib32
drwxr-xr-x  3 root root 4.0K May 14 23:50 licensing
-rw-r--r--  2 root root  25K Feb  6 16:13 oneapi-vars.sh
drwxr-xr-x  4 root root 4.0K May 14 23:50 opt
lrwxrwxrwx  1 root root   60 May 14 23:50 readme-get-started-linux-render-kit.html -> ../renderkit/2024.1/readme-get-started-linux-render-kit.html
drwxr-xr-x  6 root root 4.0K May 14 23:50 share

/opt/intel/oneapi/advisor/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:08 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x 23 root root 4.0K Mar 19 05:03 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:08 latest -> 2024.0

/opt/intel/oneapi/basekit/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:08 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  3 root root 4.0K Mar 19 04:59 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:08 latest -> 2024.0

/opt/intel/oneapi/ccl/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:22 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  8 root root 4.0K Mar 19 05:00 2021.11
lrwxrwxrwx  1 root root    7 Mar 19 05:22 latest -> 2021.11

/opt/intel/oneapi/common/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  3 root root 4.0K Mar 19 04:59 2024.0
drwxr-xr-x  3 root root 4.0K May 14 23:49 2024.1
lrwxrwxrwx  1 root root    6 May 14 23:50 latest -> 2024.1

/opt/intel/oneapi/compiler/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x 11 root root 4.0K Mar 19 05:01 2024.0
drwxr-xr-x  9 root root 4.0K May 14 23:50 2024.1
lrwxrwxrwx  1 root root    6 May 14 23:50 latest -> 2024.1

/opt/intel/oneapi/conda_channel/:
total 124K
drwxr-xr-x  5 root root 4.0K Mar 19 05:22 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  3 root root 4.0K Mar 19 05:22 bin
-rw-r--r--  1 root root  96K Mar 19 05:16 channeldata.json
drwxr-xr-x  3 root root  12K Mar 19 05:22 linux-64
drwxr-xr-x  3 root root 4.0K Mar 19 05:22 noarch

/opt/intel/oneapi/dal/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:26 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  8 root root 4.0K Mar 19 05:01 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:26 latest -> 2024.0

/opt/intel/oneapi/debugger/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  8 root root 4.0K Mar 19 05:00 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2024.0

/opt/intel/oneapi/dev-utilities/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  8 root root 4.0K Mar 19 04:59 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2024.0

/opt/intel/oneapi/diagnostics/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  6 root root 4.0K Mar 19 04:59 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2024.0

/opt/intel/oneapi/dnnl/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:26 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  8 root root 4.0K Mar 19 05:04 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:26 latest -> 2024.0

/opt/intel/oneapi/dpcpp-ct/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 04:59 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2024.0

/opt/intel/oneapi/dpl/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 04:59 2022.3
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2022.3

/opt/intel/oneapi/embree/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:26 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:05 4.3
lrwxrwxrwx  1 root root    3 Mar 19 05:26 latest -> 4.3

/opt/intel/oneapi/hpckit/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:08 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  3 root root 4.0K Mar 19 05:04 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:08 latest -> 2024.0

/opt/intel/oneapi/inspector/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x 19 root root 4.0K Mar 19 05:04 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2024.0

/opt/intel/oneapi/intelpython/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:08 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
lrwxrwxrwx  1 root root    9 Mar 19 05:08 latest -> python3.9
drwxr-xr-x 21 root root 4.0K Mar 19 05:08 python3.9

/opt/intel/oneapi/ipp/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:18 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:02 2021.10
lrwxrwxrwx  1 root root    7 Mar 19 05:18 latest -> 2021.10

/opt/intel/oneapi/ippcp/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:02 2021.9
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2021.9

/opt/intel/oneapi/ispc/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:05 1.21
drwxr-xr-x  9 root root 4.0K May 14 23:50 1.23
lrwxrwxrwx  1 root root    4 May 14 23:50 latest -> 1.23

/opt/intel/oneapi/itac/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x 13 root root 4.0K Mar 19 05:04 2022.0
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2022.0

/opt/intel/oneapi/licensing/:
total 20K
drwxr-xr-x  5 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  2 root root 4.0K Mar 19 05:05 2023.2.0
drwxr-xr-x  4 root root 4.0K Mar 19 04:59 2024.0
drwxr-xr-x  4 root root 4.0K May 14 23:49 2024.1
lrwxrwxrwx  1 root root    6 May 14 23:50 latest -> 2024.1

/opt/intel/oneapi/mkl/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:08 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:03 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:08 latest -> 2024.0

/opt/intel/oneapi/modelzoo/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  6 root root 4.0K Mar 19 05:05 2.12.0
lrwxrwxrwx  1 root root    6 Mar 19 05:17 latest -> 2.12.0

/opt/intel/oneapi/modin/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  3 root root 4.0K Mar 19 05:17 0.23.0.0
lrwxrwxrwx  1 root root    8 Mar 19 05:17 latest -> 0.23.0.0

/opt/intel/oneapi/mpi/:
total 20K
drwxr-xr-x  5 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x 14 root root 4.0K Mar 19 05:05 2021.10.0
drwxr-xr-x 10 root root 4.0K Mar 19 05:00 2021.11
drwxr-xr-x  9 root root 4.0K May 14 23:50 2021.12
lrwxrwxrwx  1 root root    7 May 14 23:50 latest -> 2021.12

/opt/intel/oneapi/neural-compressor/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:08 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  4 root root 4.0K Mar 19 05:05 2.2.0
lrwxrwxrwx  1 root root    5 Mar 19 05:08 latest -> 2.2.0

/opt/intel/oneapi/oidn/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:06 2.1
drwxr-xr-x  9 root root 4.0K May 14 23:50 2.2
lrwxrwxrwx  1 root root    3 May 14 23:50 latest -> 2.2

/opt/intel/oneapi/openpgl/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:06 0.5
drwxr-xr-x  9 root root 4.0K May 14 23:50 0.6
lrwxrwxrwx  1 root root    3 May 14 23:50 latest -> 0.6

/opt/intel/oneapi/openvkl/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:26 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:06 2.0
lrwxrwxrwx  1 root root    3 Mar 19 05:26 latest -> 2.0

/opt/intel/oneapi/ospray/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 05:06 3.0
drwxr-xr-x  9 root root 4.0K May 14 23:50 3.1
lrwxrwxrwx  1 root root    3 May 14 23:50 latest -> 3.1

/opt/intel/oneapi/ospray_studio/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  8 root root 4.0K Mar 19 05:06 0.13
drwxr-xr-x  8 root root 4.0K May 14 23:50 1.0
lrwxrwxrwx  1 root root    3 May 14 23:50 latest -> 1.0

/opt/intel/oneapi/pytorch/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:18 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x 14 root root 4.0K Mar 19 05:21 2.0.1.0
lrwxrwxrwx  1 root root    7 Mar 19 05:18 latest -> 2.0.1.0

/opt/intel/oneapi/renderkit/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  3 root root 4.0K Mar 19 05:06 2024.0
drwxr-xr-x  3 root root 4.0K May 14 23:50 2024.1
lrwxrwxrwx  1 root root    6 May 14 23:50 latest -> 2024.1

/opt/intel/oneapi/rkcommon/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  8 root root 4.0K Mar 19 05:05 1.12
drwxr-xr-x  8 root root 4.0K May 14 23:50 1.13
lrwxrwxrwx  1 root root    4 May 14 23:50 latest -> 1.13

/opt/intel/oneapi/rkutil/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  6 root root 4.0K May 14 23:50 1.10
drwxr-xr-x  6 root root 4.0K Mar 19 05:06 1.9
lrwxrwxrwx  1 root root    4 May 14 23:50 latest -> 1.10

/opt/intel/oneapi/tbb/:
total 16K
drwxr-xr-x  4 root root 4.0K May 14 23:50 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  9 root root 4.0K Mar 19 04:59 2021.11
drwxr-xr-x  9 root root 4.0K May 14 23:50 2021.12
lrwxrwxrwx  1 root root    7 May 14 23:50 latest -> 2021.12

/opt/intel/oneapi/tcm/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:08 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x  6 root root 4.0K Mar 19 04:59 1.0
lrwxrwxrwx  1 root root    3 Mar 19 05:08 latest -> 1.0

/opt/intel/oneapi/tensorflow/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:22 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x 16 root root 4.0K Mar 19 05:25 2.13.0
lrwxrwxrwx  1 root root    6 Mar 19 05:22 latest -> 2.13.0

/opt/intel/oneapi/vtune/:
total 12K
drwxr-xr-x  3 root root 4.0K Mar 19 05:16 .
drwxr-xr-x 45 root root 4.0K May 14 23:50 ..
drwxr-xr-x 25 root root 4.0K Mar 19 05:04 2024.0
lrwxrwxrwx  1 root root    6 Mar 19 05:16 latest -> 2024.0

My shell environment

sdp@university-of-tennessee-seelab:~/src/OSPRay-GPU-Texture-Problem$ env
SHELL=/bin/bash
TBBROOT=/opt/intel/oneapi/tbb/2021.12/env/..
COLORTERM=truecolor
TERM_PROGRAM_VERSION=1.89.1
INSPECTOR_2023_DIR=/opt/intel/oneapi/inspector/2024.0
ONEAPI_ROOT=/opt/intel/oneapi
CONDA_EXE=/opt/intel/oneapi/intelpython/python3.9/bin/conda
_CE_M=
PKG_CONFIG_PATH=/opt/intel/oneapi/compiler/2024.0/lib/pkgconfig:/opt/intel/oneapi/vtune/2024.0/include/pkgconfig/lib64:/opt/intel/oneapi/tbb/2021.12/env/../lib/pkgconfig:/opt/intel/oneapi/rkcommon/1.13/lib/pkgconfig:/opt/intel/oneapi/ospray/3.1/lib/pkgconfig:/opt/intel/oneapi/openvkl/2.0/lib/pkgconfig:/opt/intel/oneapi/openpgl/0.6/lib/pkgconfig:/opt/intel/oneapi/oidn/2.2/lib/pkgconfig:/opt/intel/oneapi/mpi/2021.12/lib/pkgconfig:/opt/intel/oneapi/mkl/2024.0/lib/pkgconfig:/opt/intel/oneapi/ippcp/2021.9/lib/pkgconfig:/opt/intel/oneapi/inspector/2024.0/include/pkgconfig/lib64:/opt/intel/oneapi/embree/4.3/lib/pkgconfig:/opt/intel/oneapi/dpl/2022.3/lib/pkgconfig:/opt/intel/oneapi/dnnl/2024.0/lib/pkgconfig:/opt/intel/oneapi/dal/2024.0/lib/pkgconfig:/opt/intel/oneapi/ccl/2021.11/lib/pkgconfig/:/opt/intel/oneapi/advisor/2024.0/include/pkgconfig/lib64:
VT_MPI=impi4
ACL_BOARD_VENDOR_PATH=/opt/Intel/OpenCLFPGA/oneAPI/Boards
FPGA_VARS_DIR=/opt/intel/oneapi/compiler/2024.0/opt/oclfpga
CCL_ROOT=/opt/intel/oneapi/ccl/2021.11
VT_ADD_LIBS=-ldwarf -lelf -lvtunwind -lm -lpthread
I_MPI_ROOT=/opt/intel/oneapi/mpi/2021.12
FI_PROVIDER_PATH=/opt/intel/oneapi/mpi/2021.12/opt/mpi/libfabric/lib/prov:/usr/lib/x86_64-linux-gnu/libfabric
DNNLROOT=/opt/intel/oneapi/dnnl/2024.0
DIAGUTIL_PATH=/opt/intel/oneapi/compiler/2024.0/etc/compiler/sys_check/sys_check.sh:/opt/intel/oneapi/dpcpp-ct/2024.0/etc/dpct/sys_check/sys_check.sh:/opt/intel/oneapi/debugger/2024.0/etc/debugger/sys_check/sys_check.py
ADVISOR_2024_DIR=/opt/intel/oneapi/advisor/2024.0
XML_CATALOG_FILES=file:///opt/intel/oneapi/intelpython/python3.9/etc/xml/catalog file:///etc/xml/catalog
PWD=/home/sdp/src/OSPRay-GPU-Texture-Problem
CCL_CONFIGURATION=cpu_gpu_dpcpp
LOGNAME=sdp
DPL_ROOT=/opt/intel/oneapi/dpl/2022.3
XDG_SESSION_TYPE=tty
CONDA_PREFIX=/opt/intel/oneapi/intelpython/python3.9
MANPATH=/opt/intel/oneapi/compiler/2024.0/documentation/en/man/common:/opt/intel/oneapi/mpi/2021.12/share/man:/opt/intel/oneapi/itac/2022.0/man:/opt/intel/oneapi/embree/4.3/share/man:/opt/intel/oneapi/debugger/2024.0/share/man:
OCL_ICD_VENDORS_RESET=1
VSCODE_GIT_ASKPASS_NODE=/home/sdp/.vscode-server/cli/servers/Stable-dc96b837cf6bb4af9cd736aa3af08cf8279f7685/server/node
MOTD_SHOWN=pam
HOME=/home/sdp
GDB_INFO=/opt/intel/oneapi/debugger/2024.0/share/info/
CCL_CONFIGURATION_PATH=
LANG=C.UTF-8
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.zst=01;31:*.tzst=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.wim=01;31:*.swm=01;31:*.dwm=01;31:*.esd=01;31:*.jpg=01;35:*.jpeg=01;35:*.mjpg=01;35:*.mjpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.webp=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:
SSL_CERT_DIR=/usr/lib/ssl/certs
SETVARS_COMPLETED=1
CONDA_PROMPT_MODIFIER=(intelpython-python3.9) 
GIT_ASKPASS=/home/sdp/.vscode-server/cli/servers/Stable-dc96b837cf6bb4af9cd736aa3af08cf8279f7685/server/extensions/git/dist/askpass.sh
APM=/opt/intel/oneapi/advisor/2024.0/perfmodels
CMAKE_PREFIX_PATH=/opt/intel/oneapi/compiler/2024.0:/opt/intel/oneapi/tbb/2021.12/env/..:/opt/intel/oneapi/rkcommon/1.13/lib/cmake/rkcommon:/opt/intel/oneapi/ospray/3.1/lib/cmake/ospray:/opt/intel/oneapi/openvkl/2.0/lib/cmake/openvkl:/opt/intel/oneapi/openpgl/0.6/lib/cmake/openpgl:/opt/intel/oneapi/oidn/2.2/lib/cmake/OpenImageDenoise:/opt/intel/oneapi/mkl/2024.0/lib/cmake:/opt/intel/oneapi/ispc/1.23/lib/cmake/ispcrt:/opt/intel/oneapi/ipp/2021.10/lib/cmake/ipp:/opt/intel/oneapi/embree/4.3/lib/cmake/embree:/opt/intel/oneapi/dpl/2022.3/lib/cmake/oneDPL:/opt/intel/oneapi/dnnl/2024.0/lib/cmake:/opt/intel/oneapi/dal/2024.0
SSH_CONNECTION=100.64.17.4 55952 100.80.39.17 22
CMPLR_ROOT=/opt/intel/oneapi/compiler/2024.0
FPGA_VARS_ARGS=
INFOPATH=/opt/intel/oneapi/debugger/2024.0/opt/debugger/lib
VSCODE_GIT_ASKPASS_EXTRA_ARGS=
IPPROOT=/opt/intel/oneapi/ipp/2021.10
IPP_TARGET_ARCH=intel64
LESSCLOSE=/usr/bin/lesspipe %s %s
XDG_SESSION_CLASS=user
PYTHONPATH=/opt/intel/oneapi/ospray_studio/1.0/lib:/opt/intel/oneapi/advisor/2024.0/pythonapi
TERM=xterm-256color
_CE_CONDA=
VT_ROOT=/opt/intel/oneapi/itac/2022.0
DALROOT=/opt/intel/oneapi/dal/2024.0
LESSOPEN=| /usr/bin/lesspipe %s
OCL_ICD_VENDORS=/opt/intel/oneapi/intelpython/python3.9/etc/OpenCL/vendors
USER=sdp
LIBRARY_PATH=/opt/intel/oneapi/compiler/2024.0/lib:/opt/intel/oneapi/tbb/2021.12/env/../lib/intel64/gcc4.8:/opt/intel/oneapi/mpi/2021.12/lib:/opt/intel/oneapi/mkl/2024.0/lib/:/opt/intel/oneapi/ippcp/2021.9/lib/:/opt/intel/oneapi/ipp/2021.10/lib:/opt/intel/oneapi/dpl/2022.3/lib:/opt/intel/oneapi/dnnl/2024.0/lib:/opt/intel/oneapi/dal/2024.0/lib:/opt/intel/oneapi/ccl/2021.11/lib/
DAL_MAJOR_BINARY=2
VSCODE_GIT_IPC_HANDLE=/run/user/1000/vscode-git-99922b0f3f.sock
CONDA_SHLVL=1
IPPCRYPTOROOT=/opt/intel/oneapi/ippcp/2021.9
IPPCP_TARGET_ARCH=intel64
SHLVL=2
VTUNE_PROFILER_2024_DIR=/opt/intel/oneapi/vtune/2024.0
OCL_ICD_FILENAMES=libintelocl_emu.so:libalteracl.so:/opt/intel/oneapi/compiler/2024.0/lib/libintelocl.so
XDG_SESSION_ID=1653
CLASSPATH=/opt/intel/oneapi/mpi/2021.12/share/java/mpi.jar
CONDA_PYTHON_EXE=/opt/intel/oneapi/intelpython/python3.9/bin/python
INTELFPGAOCLSDKROOT=/opt/intel/oneapi/compiler/2024.0/opt/oclfpga
LD_LIBRARY_PATH=/opt/intel/oneapi/compiler/2024.0/opt/oclfpga/host/linux64/lib:/opt/intel/oneapi/compiler/2024.0/opt/compiler/lib:/opt/intel/oneapi/compiler/2024.0/lib:/opt/intel/oneapi/tbb/2021.12/env/../lib/intel64/gcc4.8:/opt/intel/oneapi/rkcommon/1.13/lib:/opt/intel/oneapi/ospray_studio/1.0/lib:/opt/intel/oneapi/ospray/3.1/lib:/opt/intel/oneapi/openvkl/2.0/lib:/opt/intel/oneapi/openpgl/0.6/lib:/opt/intel/oneapi/oidn/2.2/lib:/opt/intel/oneapi/mpi/2021.12/opt/mpi/libfabric/lib:/opt/intel/oneapi/mpi/2021.12/lib:/opt/intel/oneapi/mkl/2024.0/lib:/opt/intel/oneapi/itac/2022.0/slib:/opt/intel/oneapi/ispc/1.23/lib:/opt/intel/oneapi/ippcp/2021.9/lib/:/opt/intel/oneapi/ipp/2021.10/lib:/opt/intel/oneapi/embree/4.3/lib:/opt/intel/oneapi/dpl/2022.3/lib:/opt/intel/oneapi/dnnl/2024.0/lib:/opt/intel/oneapi/debugger/2024.0/opt/debugger/lib:/opt/intel/oneapi/dal/2024.0/lib:/opt/intel/oneapi/ccl/2021.11/lib/
VT_LIB_DIR=/opt/intel/oneapi/itac/2022.0/lib
VTUNE_PROFILER_DIR=/opt/intel/oneapi/vtune/2024.0
XDG_RUNTIME_DIR=/run/user/1000
SSL_CERT_FILE=/usr/lib/ssl/certs/ca-certificates.crt
SSH_CLIENT=100.64.17.4 55952 22
VT_SLIB_DIR=/opt/intel/oneapi/itac/2022.0/slib
CONDA_DEFAULT_ENV=intelpython-python3.9
MKLROOT=/opt/intel/oneapi/mkl/2024.0
DAL_MINOR_BINARY=0
MODEL_ZOO_VERSION=2.12.0
VSCODE_GIT_ASKPASS_MAIN=/home/sdp/.vscode-server/cli/servers/Stable-dc96b837cf6bb4af9cd736aa3af08cf8279f7685/server/extensions/git/dist/askpass-main.js
XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop
NLSPATH=/opt/intel/oneapi/compiler/2024.0/lib/locale/%l_%t/%N:/opt/intel/oneapi/mkl/2024.0/share/locale/%l_%t/%N:
BROWSER=/home/sdp/.vscode-server/cli/servers/Stable-dc96b837cf6bb4af9cd736aa3af08cf8279f7685/server/bin/helpers/browser.sh
PATH=/opt/intel/oneapi/compiler/2024.0/opt/oclfpga/bin:/opt/intel/oneapi/compiler/2024.0/bin:/opt/intel/oneapi/vtune/2024.0/bin64:/opt/intel/oneapi/ospray_studio/1.0/bin:/opt/intel/oneapi/ospray/3.1/bin:/opt/intel/oneapi/openvkl/2.0/bin:/opt/intel/oneapi/openpgl/0.6/bin:/opt/intel/oneapi/oidn/2.2/bin:/opt/intel/oneapi/mpi/2021.12/bin:/opt/intel/oneapi/mkl/2024.0/bin/:/opt/intel/oneapi/itac/2022.0/bin:/opt/intel/oneapi/ispc/1.23/bin:/opt/intel/oneapi/intelpython/python3.9/bin:/opt/intel/oneapi/inspector/2024.0/bin64:/opt/intel/oneapi/embree/4.3/bin:/opt/intel/oneapi/dpcpp-ct/2024.0/bin:/opt/intel/oneapi/dev-utilities/2024.0/bin:/opt/intel/oneapi/debugger/2024.0/opt/debugger/bin:/opt/intel/oneapi/advisor/2024.0/bin64:/home/sdp/.vscode-server/cli/servers/Stable-dc96b837cf6bb4af9cd736aa3af08cf8279f7685/server/bin/remote-cli:/home/sdp/.local/bin:/opt/conda/condabin:/home/sdp/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
INTEL_PYTHONHOME=/opt/intel/oneapi/debugger/2024.0/opt/debugger
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
INTEL_LICENSE_FILE=/opt/intel/licenses:/home/sdp/intel/licenses
CPATH=/opt/intel/oneapi/compiler/2024.0/opt/oclfpga/include:/opt/intel/oneapi/tbb/2021.12/env/../include:/opt/intel/oneapi/mpi/2021.12/include:/opt/intel/oneapi/mkl/2024.0/include:/opt/intel/oneapi/ippcp/2021.9/include:/opt/intel/oneapi/ipp/2021.10/include:/opt/intel/oneapi/dpl/2022.3/include:/opt/intel/oneapi/dpcpp-ct/2024.0/include:/opt/intel/oneapi/dnnl/2024.0/include:/opt/intel/oneapi/dev-utilities/2024.0/include:/opt/intel/oneapi/dal/2024.0/include/dal:/opt/intel/oneapi/ccl/2021.11/include
TERM_PROGRAM=vscode
OCL_ICD_FILENAMES_RESET=1
VSCODE_IPC_HOOK_CLI=/run/user/1000/vscode-ipc-6b8f0324-2460-43e9-b26a-d28f80b85757.sock
_=/usr/bin/env

2. Run the test.py script.

2a) Inside the script is a config variable, you can change it to change which test case to run.

2b) If the script is successful, it will create an image.png at the root of the repository.

---

cpu1

gpu1

cpu2

gpu2

cpu16

gpu16

cpu19

gpu19

Thread 1 "python" received signal SIGSEGV, Segmentation fault.
0x00007fff54a1f550 in __intel_avx_rep_memcpy () from /opt/intel/oneapi/rkcommon/1.13/lib/librkcommon.so.1
(gdb) bt
#0  0x00007fff54a1f550 in __intel_avx_rep_memcpy () from /opt/intel/oneapi/rkcommon/1.13/lib/librkcommon.so.1
#1  0x00007fff43328ec3 in ospray::Data::copy(ospray::Data const&, rkcommon::math::vec_t<unsigned long, 3, false, void> const&) ()
   from /opt/intel/oneapi/ospray/3.1/lib/libospray_module_gpu.so.3.1.0
#2  0x00007fff54e138ac in ospCopyData () from /opt/intel/oneapi/ospray/3.1/lib/libospray.so

[johguenther]

Hi Tanner,
nice to "see" you again :-)

1. The initial image looks familiar. We fixed several issues related to textures on PVC in devel (soon v3.2), see e.g. 3692dd5 or 26de734.
2. I could not reproduce the crash with config=gpu19, but I was using the DPCPP-compiled v3.1 (not oneAPI). I also tried devel, which gives yet another result (see below), so this needs further investigation. The crash looks like access beyond the src array, could it be related to how the python wrappers use ospCopyData?

v3.1	devel

Cheers,
Johannes

[player1537]

I'm happy to hear that several texture problems have been fixed! Hopefully that bodes well for the issue that I'm facing.

I'll have access to that Intel DevCloud machine again in a couple of weeks, so I'll be able to do some more testing then.

Once I get access again, what's the best way for me to test the newest versions? Should I plan to build OSPRay and friends myself, or is there a nightly-built artifact that you can share with me?