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# 6.11. CUPTI SASS Metrics API

Functions, types, and enums that implement the CUPTI SASS Metrics API.

## 6.11.1. Data Structures

CUpti_SassMetricsDisable_Params

  Params for cuptiSassMetricsDisable.

CUpti_SassMetricsEnable_Params

  Params for cuptiSassMetricsEnable.

CUpti_SassMetricsFlushData_Params

  Params for cuptiSassMetricsFlushData.

CUpti_SassMetricsGetDataProperties_Params

  Params for cuptiSassMetricsGetDataProperties.

CUpti_SassMetricsSetConfig_Params

  Params for cuptiSassMetricsSetConfig.

CUpti_SassMetricsUnsetConfig_Params

  Params for cuptiSassMetricsUnsetConfig.

CUpti_SassMetrics_Config

CUpti_SassMetrics_Data

CUpti_SassMetrics_GetMetrics_Params

  Params for cuptiSassMetricsGetMetrics.

CUpti_SassMetrics_GetNumOfMetrics_Params

  Params for cuptiSassMetricsGetNumOfMetrics.

CUpti_SassMetrics_GetProperties_Params

  Params for cuptiSassMetricsGetProperties.

CUpti_SassMetrics_InstanceValue

CUpti_SassMetrics_MetricDetails

## 6.11.2. Macros

CUpti_SassMetricsDisable_Params_STRUCT_SIZE

CUpti_SassMetricsEnable_Params_STRUCT_SIZE

CUpti_SassMetricsFlushData_Params_STRUCT_SIZE

CUpti_SassMetricsGetDataProperties_Params_STRUCT_SIZE

CUpti_SassMetricsSetConfig_Params_STRUCT_SIZE

CUpti_SassMetricsUnsetConfig_Params_STRUCT_SIZE

CUpti_SassMetrics_GetMetrics_Params_STRUCT_SIZE

CUpti_SassMetrics_GetNumOfMetrics_Params_STRUCT_SIZE

CUpti_SassMetrics_GetProperties_Params_STRUCT_SIZE

CUpti_SassMetrics_InstanceValue_STRUCT_SIZE

## 6.11.3. Enumerations

CUpti_SassMetrics_OutputGranularity

## 6.11.4. Functions

CUptiResult cuptiSassMetricsDisable(CUpti_SassMetricsDisable_Params *pParams)

  SASS metric data collection disable API will mark the end of a range, any kernel launched after this API call will not be profiled for the SASS metrics.

CUptiResult cuptiSassMetricsEnable(CUpti_SassMetricsEnable_Params *pParams)

  Sass metric data collection enable API will mark the start of a range, between which kernel will be profiled for SASS metrics.

CUptiResult cuptiSassMetricsFlushData(CUpti_SassMetricsFlushData_Params *pParams)

  Flush SASS metrics data from CUPTI internal buffer to the user buffer.

CUptiResult cuptiSassMetricsGetDataProperties(CUpti_SassMetricsGetDataProperties_Params *pParams)

  SASS metric data properties API will give the data regarding number of instances of a metric value and number of SASS instruction data has been collected.

CUptiResult cuptiSassMetricsGetMetrics(CUpti_SassMetrics_GetMetrics_Params *pParams)

  Get the list of all supported SASS metrics for the chip.

CUptiResult cuptiSassMetricsGetNumOfMetrics(CUpti_SassMetrics_GetNumOfMetrics_Params *pParams)

  Get the number of supported SASS metrics for the chip.

CUptiResult cuptiSassMetricsGetProperties(CUpti_SassMetrics_GetProperties_Params *pParams)

  Get metric properties for the queried metric.

CUptiResult cuptiSassMetricsSetConfig(CUpti_SassMetricsSetConfig_Params *pParams)

  Set config for the SASS metric data collection for a device.

CUptiResult cuptiSassMetricsUnsetConfig(CUpti_SassMetricsUnsetConfig_Params *pParams)

  Unset config API will reset the SASS metric data collection configuration for the device.

## 6.11.5. Macros

CUpti_SassMetricsDisable_Params_STRUCT_SIZE

CUpti_SassMetricsEnable_Params_STRUCT_SIZE

CUpti_SassMetricsFlushData_Params_STRUCT_SIZE

CUpti_SassMetricsGetDataProperties_Params_STRUCT_SIZE

CUpti_SassMetricsSetConfig_Params_STRUCT_SIZE

CUpti_SassMetricsUnsetConfig_Params_STRUCT_SIZE

CUpti_SassMetrics_GetMetrics_Params_STRUCT_SIZE

CUpti_SassMetrics_GetNumOfMetrics_Params_STRUCT_SIZE

CUpti_SassMetrics_GetProperties_Params_STRUCT_SIZE

CUpti_SassMetrics_InstanceValue_STRUCT_SIZE

## 6.11.6. Enumerations

enum CUpti_SassMetrics_OutputGranularity

  Values:

  enumerator CUPTI_SASS_METRICS_OUTPUT_GRANULARITY_GPU

    SASS metric data will be collected at GPU level. In CUpti_SassMetricsGetDataProperties_Params struct the numOfInstances will be equal to 1.

  enumerator CUPTI_SASS_METRICS_OUTPUT_GRANULARITY_SM

    SASS metric data will be collected at SM level In CUpti_SassMetricsGetDataProperties_Params struct the numOfInstances will be equal to number of SMs in the GPU.

  enumerator CUPTI_SASS_METRICS_OUTPUT_GRANULARITY_SMSP

    SASS metric data will be collected at SM sub-partition level In CUpti_SassMetricsGetDataProperties_Params struct the numOfInstances will be equal to number of SM sub-partitions in the GPU.

  enumerator CUPTI_SASS_METRICS_OUTPUT_GRANULARITY_INVALID

## 6.11.7. Functions

CUptiResult cuptiSassMetricsDisable(

  CUpti_SassMetricsDisable_Params *pParams,

)

  SASS metric data collection disable API will mark the end of a range, any kernel launched after this API call will not be profiled for the SASS metrics.

  Parameters:

    pParams – A pointer to CUpti_SassMetricsDisable_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric data collection

    - CUPTI_ERROR_INVALID_CONTEXT – if any cuda context has not been created prior to this API call

    - CUPTI_ERROR_INVALID_OPERATION – if this API is called multiple times for a cuda context without calling cuptiSassMetricsEnable() API or called before cuptiSassMetricsSetConfig() API call.

CUptiResult cuptiSassMetricsEnable(

  CUpti_SassMetricsEnable_Params *pParams,

)

  Sass metric data collection enable API will mark the start of a range, between which kernel will be profiled for SASS metrics.

  Parameters:

    pParams – A pointer to CUpti_SassMetricsEnable_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric data collection

    - CUPTI_ERROR_INVALID_CONTEXT – if any cuda context has not been created prior to this API call

    - CUPTI_ERROR_INVALID_OPERATION – if this API is called multiple times for a cuda context without calling cuptiSassMetricsDisable() API or called before cuptiSassMetricsSetConfig() API call.

CUptiResult cuptiSassMetricsFlushData(

  CUpti_SassMetricsFlushData_Params *pParams,

)

  Flush SASS metrics data from CUPTI internal buffer to the user buffer.

  User needs to allocate the buffer for retrieving the data. The number of records collected can be queried using the API cuptiSassMetricsGetDataProperties().

  Parameters:

    pParams – A pointer to CUpti_SassMetricsFlushData_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric data collection.

    - CUPTI_ERROR_INVALID_OPERATION – if this API is called outside the enable/disable range.

CUptiResult cuptiSassMetricsGetDataProperties(

  CUpti_SassMetricsGetDataProperties_Params *pParams,

)

  SASS metric data properties API will give the data regarding number of instances of a metric value and number of SASS instruction data has been collected.

  The number of instances of a metric will vary as per user set the output granularity level with CUpti_SassMetrics_OutputGranularity value. User need to allocate memory for retriving the SASS data using cuptiSassMetricsFlushData() API.

  Parameters:

    pParams – A pointer to CUpti_SassMetricsGetDataProperties_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric data collection

    - CUPTI_ERROR_INVALID_OPERATION – if this API is called outside the enable/disable range.

CUptiResult cuptiSassMetricsGetMetrics(

  CUpti_SassMetrics_GetMetrics_Params *pParams,

)

  Get the list of all supported SASS metrics for the chip.

  Parameters:

    pParams – A pointer to CUpti_SassMetrics_GetMetrics_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric collection

CUptiResult cuptiSassMetricsGetNumOfMetrics(

  CUpti_SassMetrics_GetNumOfMetrics_Params *pParams,

)

  Get the number of supported SASS metrics for the chip.

  Parameters:

    pParams – A pointer to CUpti_SassMetrics_GetNumOfMetrics_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric collection

CUptiResult cuptiSassMetricsGetProperties(

  CUpti_SassMetrics_GetProperties_Params *pParams,

)

  Get metric properties for the queried metric.

  For a given metric the results will be put in CUpti_SassMetrics_MetricDetails which stores metric ID, description of the metric.

  Parameters:

    pParams – A pointer to CUpti_SassMetrics_GetProperties_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric data collection

CUptiResult cuptiSassMetricsSetConfig(

  CUpti_SassMetricsSetConfig_Params *pParams,

)

  Set config for the SASS metric data collection for a device.

  User need to call this API before calling any of the SASS metric data collection APIs. Each set config API call need to be followed by cuptiSassPatchingUnSetConfig API before calling the cuptiSassMetricsSetConfig() API again for the same device.

  Parameters:

    pParams – A pointer to CUpti_SassMetricsSetConfig_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_INVALID_CONTEXT – if any cuda context has not been created prior to this API call

    - CUPTI_ERROR_INVALID_OPERATION – if this is called multiple times for the device without calling unset config API

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric data collection

CUptiResult cuptiSassMetricsUnsetConfig(

  CUpti_SassMetricsUnsetConfig_Params *pParams,

)

  Unset config API will reset the SASS metric data collection configuration for the device.

  Once this API called CUPTI will deallocate all the memory allocated and remove all the configuration for SASS metric data collection. User can only call this API for a device where cuptiSassMetricsSetConfig() API has been called earlier for the device.

  Parameters:

    pParams – A pointer to CUpti_SassMetricsSetConfig_Params

  Return values:

    - CUPTI_SUCCESS –

    - CUPTI_ERROR_INVALID_PARAMETER – if any `pParams` is not valid

    - CUPTI_ERROR_INVALID_CONTEXT – if any cuda context has not been created prior to this API call

    - CUPTI_ERROR_INVALID_OPERATION – if this is called multiple times for the device without calling set config API

    - CUPTI_ERROR_NOT_SUPPORTED – indicates that the system/device doesn’t support SASS metric data collection