Intel^® VTune^™ Profiler 2022.0.0

Elapsed Time: 13.963s
- CPU Time: 14.018s
  - Effective Time: 14.018s
  - Spin Time: 0s
    - Imbalance or Serial Spinning: 0s
    - Lock Contention: 0s
    - Other: 0s
  - Overhead Time: 0s
    - Creation: 0s
    - Scheduling: 0s
    - Reduction: 0s
    - Atomics: 0s
    - Other: 0s
- Instructions Retired: 109,310,000,000
- Microarchitecture Usage: 52.7% of Pipeline Slots
  - CPI Rate: 0.443
- Total Thread Count: 12
- Paused Time: 0s

Top Hotspots:

Function	Module	CPU Time	% of CPU Time(%)
[MKL BLAS]@avx512_sgemm_kernel_0	libmkl_avx512.so.2	11.231s	80.1%
[Outside any known module]	[Unknown]	1.869s	13.3%
main	mm_dpcpp_mkl	0.155s	1.1%
Intel::OpenCL::Utils::OclNonReentrantSpinMutex::Lock	libcpu_device.so.2021.13.11.0	0.130s	0.9%
[MKL BLAS]@avx512_sgemm_scopy_right8_ea	libmkl_avx512.so.2	0.115s	0.8%
[Others]	N/A	0.516s	3.7%

Top Tasks:
Task Type Task Time Task Count Average Task Time
tbb_custom 24.961s 10 2.496s
tbb_parallel_for 0.155s 12 0.013s

Task Type	Task Time	Task Count	Average Task Time
tbb_custom	24.961s	10	2.496s
tbb_parallel_for	0.155s	12	0.013s

Effective Physical Core Utilization: 8.3% (1.001 out of 12)

The metric value is low, which may signal a poor physical CPU cores utilization caused by:
    - load imbalance
    - threading runtime overhead
    - contended synchronization
    - thread/process underutilization
    - incorrect affinity that utilizes logical cores instead of physical cores
Explore sub-metrics to estimate the efficiency of MPI and OpenMP parallelism or run the Locks and Waits analysis to identify parallel bottlenecks for other parallel runtimes.

Effective Logical Core Utilization: 4.2% (1.004 out of 24)

The metric value is low, which may signal a poor logical CPU cores utilization. Consider improving physical core utilization as the first step and then look at opportunities to utilize logical cores, which in some cases can improve processor throughput and overall performance of multi-threaded applications.

Collection and Platform Info:
- Application Command Line: /home/u49991/DPCPP_Performance_Portability/lab/mm_dpcpp_mkl "-n" "10240" "-m" "64"
- 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: s001-n003
- Result Size: 9.2 MB
- Collection start time: 02:48:14 13/01/2022 UTC
- Collection stop time: 02:48:28 13/01/2022 UTC
- Collector Type: Driverless Perf per-process sampling
- CPU:
  - Name: Intel(R) Xeon(R) Processor code named Skylake
  - Frequency: 3.392 GHz
  - Logical CPU Count: 24
  - Cache Allocation Technology:
    Level 2 capability: not detected
    Level 3 capability: available