Intel^® VTune^™ Profiler 2022.0.0

Elapsed Time: 0.936s
- GPU Time: 0.094s

0:28:0.0 : DG1 [Iris Xe MAX Graphics]:
- EU Array Stalled/Idle:
  61.2% of Elapsed time with GPU busy
  The percentage of time when the EUs were stalled or idle is high, which has a negative impact on compute-bound applications.
  - Occupancy:
    81.3% of peak value
    Several factors including shared local memory, use of memory barriers, and inefficient work scheduling can cause a low value of the occupancy metric.
    - Hottest GPU Computing Tasks with Low Occupancy:
      Computing Task Total Time SIMD Width Occupancy(%) SIMD Utilization(%)
  - Sampler Busy: 0.0% of peak value
    - Hottest GPU Computing Tasks with High Sampler Usage:
      Computing Task Total Time

0:106:0.0 : DG1 [Iris Xe MAX Graphics]:
- EU Array Stalled/Idle:
  100.0% of Elapsed time with GPU busy
  The percentage of time when the EUs were stalled or idle is high, which has a negative impact on compute-bound applications.
  - Occupancy:
    0.0% of peak value
    Several factors including shared local memory, use of memory barriers, and inefficient work scheduling can cause a low value of the occupancy metric.
    - Hottest GPU Computing Tasks with Low Occupancy:
      Computing Task Total Time SIMD Width Occupancy(%) SIMD Utilization(%)
  - Sampler Busy: 0.0% of peak value
    - Hottest GPU Computing Tasks with High Sampler Usage:
      Computing Task Total Time

Collection and Platform Info:
- Application Command Line: /home/u49991/DPCPP_Performance_Portability/lab/mm_dpcpp_basic "-n" "1024" "-m" "16"
- Operating System: 5.4.0-80-generic DISTRIB_ID=Ubuntu DISTRIB_RELEASE=20.04 DISTRIB_CODENAME=focal DISTRIB_DESCRIPTION="Ubuntu 20.04.3 LTS"
- Computer Name: s011-n005
- Result Size: 26.9 MB
- Collection start time: 04:50:00 13/01/2022 UTC
- Collection stop time: 04:50:01 13/01/2022 UTC
- Collector Type: Event-based sampling driver,Driverless Perf system-wide sampling,User-mode sampling and tracing
- CPU:
  - Name: Intel(R) Xeon(R) Processor code named Cascadelake
  - Frequency: 3.504 GHz
  - Logical CPU Count: 24