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7950x results: with Intel OCL runtime with dot product ext supp. way slower than without it..

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Domain
performance

Research direction

No files, tests, or entry points are mentioned. Start by reproducing the INT8 benchmark on the Intel OpenCL runtimes 2025.1 and 2024.x using the reported Ryzen 9 7950X setup, then determine whether the regression is in the benchmark or the runtime. Done means documenting the cause and an actionable project change or confirmed external-runtime issue.

Written by the indexing model from the issue text.

Description

Hi,
similar situation to M4.. i.e. CL runtime supporting cl_khr_integer_dot_product produces slower results
new Intel OpenCL runtime for CPU 2025.1 supports cl_khr_integer_dot_product! (https://www.intel.com/content/www/us/en/developer/articles/release-notes/opencl-runtime-release-notes.html)..
results on 7950x on 2025.1:

| INT8 compute 0.079 TIOPs/s (1/64) |

vs using older 2024 runtime not supporting it:

| INT8 compute 0.588 TIOPs/s (1/64) |

full results:
2025.1:

|----------------.------------------------------------------------------------|
| Device ID      | 1                                                          |
| Device Name    | AMD Ryzen 9 7950X 16-Core Processor                        |
| Device Vendor  | Intel(R) Corporation                                       |
| Device Driver  | 2025.19.3.0.17_230222 (Windows)                            |
| OpenCL Version | OpenCL C 3.0                                               |
| Compute Units  | 32 at 0 MHz (16 cores, 0.000 TFLOPs/s)                     |
| Memory, Cache  | 98026 MB RAM, 1024 KB global / 256 KB local                |
| Buffer Limits  | 98026 MB global, 128 KB constant                           |
|----------------'------------------------------------------------------------|
| Info: OpenCL C code successfully compiled.                                  |
| FP64  compute                                         1.100 TFLOPs/s (1/64) |
| FP32  compute                                         1.309 TFLOPs/s (1/64) |
| FP16  compute                                         0.244 TFLOPs/s (1/64) |
| INT64 compute                                         0.538  TIOPs/s (1/64) |
| INT32 compute                                         1.270  TIOPs/s (1/64) |
| INT16 compute                                         2.589  TIOPs/s (1/64) |
| INT8  compute                                         0.079  TIOPs/s (1/64) |
| Memory Bandwidth ( coalesced read      )                         50.96 GB/s |
| Memory Bandwidth ( coalesced      write)                         27.70 GB/s |
| Memory Bandwidth (misaligned read      )                         60.71 GB/s |
| Memory Bandwidth (misaligned      write)                         30.80 GB/s |
|-----------------------------------------------------------------------------|

2024.x:

|----------------.------------------------------------------------------------|
| Device ID      | 1                                                          |
| Device Name    | AMD Ryzen 9 7950X 16-Core Processor                        |
| Device Vendor  | Intel(R) Corporation                                       |
| Device Driver  | 2024.17.3.0.08_160000 (Windows)                            |
| OpenCL Version | OpenCL C 3.0                                               |
| Compute Units  | 32 at 0 MHz (16 cores, 0.000 TFLOPs/s)                     |
| Memory, Cache  | 98026 MB RAM, 1024 KB global / 32 KB local                 |
| Buffer Limits  | 98026 MB global, 128 KB constant                           |
|----------------'------------------------------------------------------------|
| Info: OpenCL C code successfully compiled.                                  |
| FP64  compute                                         0.979 TFLOPs/s (1/64) |
| FP32  compute                                         1.175 TFLOPs/s (1/64) |
| FP16  compute                                          not supported        |
| INT64 compute                                         0.303  TIOPs/s (1/64) |
| INT32 compute                                         1.225  TIOPs/s (1/64) |
| INT16 compute                                         2.323  TIOPs/s (1/64) |
| INT8  compute                                         0.588  TIOPs/s (1/64) |
| Memory Bandwidth ( coalesced read      )                         49.40 GB/s |
| Memory Bandwidth ( coalesced      write)                         27.05 GB/s |
| Memory Bandwidth (misaligned read      )                         59.32 GB/s |
| Memory Bandwidth (misaligned      write)                         30.57 GB/s |
|-----------------------------------------------------------------------------|
Dominant language
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