62 строки
2.6 KiB
C++
62 строки
2.6 KiB
C++
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// Vladimir: The example of using Host-trap PC sampling exclusively on the system with single MI200.
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// If any of the rocprofiler calls returns status fail, we simply stop the application.
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#include <rocprofiler/rocprofiler.h>
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#include "common.h"
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int
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main(int /*argc*/, char** /*argv*/)
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{
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rocprofiler_status_t status;
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// creating a context
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rocprofiler_context_id_t context_id;
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ROCPROFILER_CALL(rocprofiler_create_context(&context_id), "Cannot create context\n");
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rocprofiler_agent_t gpu_agent = find_first_gpu_agent();
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// creating a buffer that will hold pc sampling information
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rocprofiler_buffer_policy_t drop_buffer_action = ROCPROFILER_BUFFER_POLICY_DISCARD;
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rocprofiler_buffer_id_t buffer_id;
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ROCPROFILER_CALL(rocprofiler_create_buffer(context_id,
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BUFFER_SIZE_BYTES,
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WATERMARK,
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drop_buffer_action,
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rocprofiler_pc_sampling_callback,
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nullptr,
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&buffer_id),
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"Cannot create pc sampling buffer");
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// PC sampling service configuration
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rocprofiler_pc_sampling_method_t sampling_method = ROCPROFILER_PC_SAMPLING_METHOD_HOST_TRAP;
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rocprofiler_pc_sampling_unit_t sampling_unit = ROCPROFILER_PC_SAMPLING_UNIT_TIME;
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// What units are we using for time? ms, micro secs, ns?
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uint64_t interval = 1000; // I assumed micro secs, so this should be 1ms
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// Instantiating the PC sampling service
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ROCPROFILER_CALL(
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rocprofiler_configure_pc_sampling_service(
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context_id, gpu_agent, sampling_method, sampling_unit, interval, buffer_id),
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"Cannot create PC sampling service");
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// Vladimir: Is this the place of retrying if someone already created the
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// configuration and the previous call fails?
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// Starting the context that should trigger PC sampling?
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ROCPROFILER_CALL(rocprofiler_start_context(context_id), "Cannot start PC sampling context");
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// Running the applicaiton
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run_HIP_app();
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// Stop the context that should stop PC sampling?
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ROCPROFILER_CALL(rocprofiler_stop_context(context_id), "Cannot start PC sampling context");
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// Explicit buffer flush, before destroying it
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ROCPROFILER_CALL(rocprofiler_flush_buffer(buffer_id), "Cannot destroy buffer");
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// Destroying the buffer
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ROCPROFILER_CALL(rocprofiler_destroy_buffer(buffer_id), "Cannot destroy buffer");
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// Vladimir: Do we need to destroy context or a service?
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return 0;
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}
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