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Overall Analysis in Region Mode

Figure 1 Case 9

The region mode supports instrumentation of multiple functions or loops. You can run multiple methods in a new case in sequence. In the example, method 9 is added to invoke the following methods in sequence:

  • 1(parallel_matmult)
  • 2(transpose_B_matmult)
  • 4(block_transpose_B_matmult)
  • 5(intrinsics_transpose_B_matmult)
  • 6(kml_matmult_8192)
  1. Run the multi_method_matmult case whose matrix determinant is 8192.
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    ./matmul 8192 9

    Command output:

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    Size is 8192, Matrix multiplication method is: 9, Check correctness is: 0
Initialization time = 2.663596s
Matrix multiplication time(parallel_matmult) = 524.732915s
Matrix multiplication time(transpose_B_matmult) = 12.199910s
Matrix multiplication time(block_transpose_B_matmult) = 3.940094s
Matrix multiplication time(intrinsics_transpose_B_matmult) = 2.543300s
Matrix multiplication time(kml_matmult_8192) = 0.320360s
Matrix multiplication time = 543.736720s

    You can see the time spent on each method.

  2. Create a roofline analysis task for the multi_method_matmult 8192 case.
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    devkit tuner roofline -o multi_method_matmult_8192 -m region ./matmul 8192 9

    Command output:

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    Note:
    1. Roofline task is currently only supported on the 920 platform.
    2. The application must be a binary file in ELF format, and read permissions are required to detect the format of the application.
    3. Roofline task collection needs to ensure the application has finished running.
    4. The estimated time of roofline collection is about 3 * application estimated time.
    5. Roofline analysis is available only on physical machines.
    6. You can learn about the roofline profiling method by looking at document /usr/local/devkit/tuner/docs/ROOFLINE_KNOW_HOW.MD
RFCOLLECT: Start collection for ./matmul
RFCOLLECT: Launch application to collect performance metrics of ./matmul
Size is 8192, Matrix multiplication method is: 9, Check correctness is: 0
Initialization time = 2.712200s
ROOFLINE_EVENTS are initialized.
Matrix multiplication time(parallel_matmult) = 522.059154s
Matrix multiplication time(transpose_B_matmult) = 10.515641s
Matrix multiplication time(block_transpose_B_matmult) = 3.325110s
Matrix multiplication time(intrinsics_transpose_B_matmult) = 2.258315s
Matrix multiplication time(kml_matmult) = 0.287929s
Matrix multiplication time = 538.468327s
RFCOLLECT: Launch application to do binary instrumentation of ./matmul
Size is 8192, Matrix multiplication method is: 9, Check correctness is: 0
Initialization time = 8.095281s
Matrix multiplication time(parallel_matmult) = 348.475675s
Matrix multiplication time(transpose_B_matmult) = 17.144564s
Matrix multiplication time(block_transpose_B_matmult) = 3.646071s
Matrix multiplication time(intrinsics_transpose_B_matmult) = 2.427023s
Matrix multiplication time(kml_matmult) = 0.297098s
Matrix multiplication time = 371.991296s
RFCOLLECT: Launch benchmarks for measuring roofs
RFCOLLECT: Processing all collected data
RFCOLLECT: Result is captured at /matrix_multiplication/rfcollect-20240507-115538.json
RFCOLLECT: Run "rfreport /matrix_multiplication/rfcollect-20240507-115538.json" to get report.

Get roofline report ...
The roofline json report: /matrix_multiplication/multi_method_matmult_8192.json
The roofline html report: /matrix_multiplication/multi_method_matmult_8192.html
  3. View the multi_method_matmult_8192.html report.

    Present all the cases provided in Parallel Case to KML Case into the same diagram for convenient analysis.

    Figure 2 multi_method_matmult_8192.html