Intel^® VTune^™ Profiler 2024.0.0

Recommendations:

GPU Time, % of Elapsed time: 29.6%

GPU utilization is low. Switch to the for in-depth analysis of host activity. Poor GPU utilization can prevent the application from offloading effectively.

XVE Array Stalled/Idle: 56.6% of Elapsed time with GPU busy

GPU metrics detect some kernel issues. Use GPU Compute/Media Hotspots (preview) to understand how well your application runs on the specified hardware.

Elapsed Time: 13.283s
- GPU Time, % of Elapsed time:
  29.6%
```
GPU utilization is low. Consider offloading more work to the GPU to increase overall application performance.
```
  - GPU Time, % of Elapsed time:
    GPU Adapter GPU Engine GPU Time GPU Time, % of Elapsed time(%)
    GPU 1 Render and GPGPU 3.927s 29.6%
  - Top Hotspots when GPU was idle:
    Function Module CPU Time
    asm_exc_page_fault vmlinux 4.544s
    [Skipped stack frame(s)] [Unknown] 1.836s
    _raw_spin_lock vmlinux 1.600s
    asm_exc_int3 vmlinux 1.400s
    memcmp libc-dynamic.so 1.300s
    [Others] N/A 18.163s

GPU Adapter	GPU Engine	GPU Time	GPU Time, % of Elapsed time(%)
GPU 1	Render and GPGPU	3.927s	29.6%

Function	Module	CPU Time
asm_exc_page_fault	vmlinux	4.544s
[Skipped stack frame(s)]	[Unknown]	1.836s
_raw_spin_lock	vmlinux	1.600s
asm_exc_int3	vmlinux	1.400s
memcmp	libc-dynamic.so	1.300s
[Others]	N/A	18.163s

Hottest Host Tasks:

Host Task	Task Time	% of Elapsed Time(%)	Task Count
zeEventHostSynchronize	3.942s	29.7%	102
zeCommandListAppendMemoryCopy	0.374s	2.8%	5
zeModuleCreate	0.088s	0.7%	1
zeCommandListAppendLaunchKernel	0.001s	0.0%	100
zeCommandListCreateImmediate	0.001s	0.0%	3
[Others]	0.000s	0.0%	5

Hottest GPU Computing Tasks:

Computing Task	Total Time	Execution Time	% of Total Time(%)	SIMD Width
iso3dfd(sycl::_V1::queue&, float, float, float, float, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long)::{lambda()#1}::operator()<sycl::_V1::handler>(, signed char) const::{lambda()#1}	3.923s	3.921s	100.0%	32
[Outside any task]	0.752s	0s	0.0%

Collection and Platform Info:
- Application Command Line: ./build/src/4_GPU_optimized "1024" "1024" "1024" "32" "8" "4" "100"
- Operating System: 5.15.0-100-generic DISTRIB_ID=Ubuntu DISTRIB_RELEASE=22.04 DISTRIB_CODENAME=jammy DISTRIB_DESCRIPTION="Ubuntu 22.04.4 LTS"
- Computer Name: idc-beta-batch-pvc-node-04
- Result Size: 130.0 MB
- Collection start time: 16:12:35 21/03/2024 UTC
- Collection stop time: 16:12:48 21/03/2024 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 Sapphirerapids
  - Frequency: 2.000 GHz
  - Logical CPU Count: 224
  - LLC size: 110.1 MB
- GPU:
  - GPU 0: 0:41:0.0 : Display controller: Intel Corporation Device 0x0bda:
    BDF: 0:41:0:0
    XVE Count: 448
    Max XVE Thread Count: 8
    Max Core Frequency: 1.550 GHz
  - GPU 1: 0:58:0.0 : Display controller: Intel Corporation Device 0x0bda:
    BDF: 0:58:0:0
    XVE Count: 448
    Max XVE Thread Count: 8
    Max Core Frequency: 1.550 GHz
  - GPU 2: 0:154:0.0 : Display controller: Intel Corporation Device 0x0bda:
    BDF: 0:154:0:0
    XVE Count: 448
    Max XVE Thread Count: 8
    Max Core Frequency: 1.550 GHz
  - GPU 3: 0:202:0.0 : Display controller: Intel Corporation Device 0x0bda:
    BDF: 0:202:0:0
    XVE Count: 448
    Max XVE Thread Count: 8
    Max Core Frequency: 1.550 GHz