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cupti_profiler.c
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3445 lines (3043 loc) · 145 KB
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/**
* @file cupti_profiler.c
*
* @author Treece Burgess tburgess@icl.utk.edu (updated in 2024, redesigned to add device qualifier support.)
* @author Anustuv Pal anustuv@icl.utk.edu
* @author Dong Jun WOun dwoun@vols.utk.edu
*/
#include <dlfcn.h>
#include <papi.h>
#include "papi_memory.h"
#include <cupti_target.h>
#include <cupti_profiler_target.h>
#include <nvperf_host.h>
#include <nvperf_cuda_host.h>
#include <nvperf_target.h>
#include "papi_cupti_common.h"
#include "cupti_profiler.h"
#include "cupti_config.h"
#include "lcuda_debug.h"
#include "htable.h"
/**
* Event identifier encoding format:
* +--------+------+-------+----+------------+
* | unused | stat | dev | ql | nameid |
* +--------+------+-------+----+------------+
*
* unused : 2 bits
* stat : 3 bit ([0 - 8] stats)
* device : 7 bits ([0 - 127] devices)
* qlmask : 2 bits (qualifier mask)
* nameid : 18: bits (roughly > 262 Thousand event names)
*/
#define EVENTS_WIDTH (sizeof(uint32_t) * 8)
#define STAT_WIDTH ( 3)
#define DEVICE_WIDTH ( 7)
#define QLMASK_WIDTH ( 2)
#define NAMEID_WIDTH (18)
#define UNUSED_WIDTH (EVENTS_WIDTH - DEVICE_WIDTH - QLMASK_WIDTH - NAMEID_WIDTH - STAT_WIDTH)
#define STAT_SHIFT (EVENTS_WIDTH - UNUSED_WIDTH - STAT_WIDTH)
#define DEVICE_SHIFT (EVENTS_WIDTH - UNUSED_WIDTH - STAT_WIDTH - DEVICE_WIDTH)
#define QLMASK_SHIFT (DEVICE_SHIFT - QLMASK_WIDTH)
#define NAMEID_SHIFT (QLMASK_SHIFT - NAMEID_WIDTH)
#define STAT_MASK ((0xFFFFFFFF >> (EVENTS_WIDTH - STAT_WIDTH)) << STAT_SHIFT)
#define DEVICE_MASK ((0xFFFFFFFF >> (EVENTS_WIDTH - DEVICE_WIDTH)) << DEVICE_SHIFT)
#define QLMASK_MASK ((0xFFFFFFFF >> (EVENTS_WIDTH - QLMASK_WIDTH)) << QLMASK_SHIFT)
#define NAMEID_MASK ((0xFFFFFFFF >> (EVENTS_WIDTH - NAMEID_WIDTH)) << NAMEID_SHIFT)
#define STAT_FLAG (0x2)
#define DEVICE_FLAG (0x1)
#define NUM_STATS_QUALS 7
char stats[NUM_STATS_QUALS][PAPI_MIN_STR_LEN] = {"avg", "sum", "min", "max", "max_rate", "pct", "ratio"};
typedef struct {
int stat;
int device;
int flags;
int nameid;
} event_info_t;
typedef struct byte_array_s {
int size;
uint8_t *data;
} byte_array_t;
typedef struct cuptip_gpu_state_s {
int dev_id;
cuptiu_event_table_t *added_events;
int numberOfRawMetricRequests;
NVPA_RawMetricRequest *rawMetricRequests;
byte_array_t counterDataPrefixImage;
byte_array_t configImage;
byte_array_t counterDataImage;
byte_array_t counterDataScratchBuffer;
byte_array_t counterAvailabilityImage;
} cuptip_gpu_state_t;
struct cuptip_control_s {
cuptip_gpu_state_t *gpu_ctl;
long long *counters;
int read_count;
int running;
cuptic_info_t info;
};
static void *dl_nvpw;
static int numDevicesOnMachine;
static cuptiu_event_table_t *cuptiu_table_p;
// Cupti Profiler API function pointers //
CUptiResult ( *cuptiProfilerInitializePtr ) (CUpti_Profiler_Initialize_Params* params);
CUptiResult ( *cuptiProfilerDeInitializePtr ) (CUpti_Profiler_DeInitialize_Params* params);
CUptiResult ( *cuptiProfilerCounterDataImageCalculateSizePtr ) (CUpti_Profiler_CounterDataImage_CalculateSize_Params* params);
CUptiResult ( *cuptiProfilerCounterDataImageInitializePtr ) (CUpti_Profiler_CounterDataImage_Initialize_Params* params);
CUptiResult ( *cuptiProfilerCounterDataImageCalculateScratchBufferSizePtr ) (CUpti_Profiler_CounterDataImage_CalculateScratchBufferSize_Params* params);
CUptiResult ( *cuptiProfilerCounterDataImageInitializeScratchBufferPtr ) (CUpti_Profiler_CounterDataImage_InitializeScratchBuffer_Params* params);
CUptiResult ( *cuptiProfilerBeginSessionPtr ) (CUpti_Profiler_BeginSession_Params* params);
CUptiResult ( *cuptiProfilerSetConfigPtr ) (CUpti_Profiler_SetConfig_Params* params);
CUptiResult ( *cuptiProfilerBeginPassPtr ) (CUpti_Profiler_BeginPass_Params* params);
CUptiResult ( *cuptiProfilerEnableProfilingPtr ) (CUpti_Profiler_EnableProfiling_Params* params);
CUptiResult ( *cuptiProfilerPushRangePtr ) (CUpti_Profiler_PushRange_Params* params);
CUptiResult ( *cuptiProfilerPopRangePtr ) (CUpti_Profiler_PopRange_Params* params);
CUptiResult ( *cuptiProfilerDisableProfilingPtr ) (CUpti_Profiler_DisableProfiling_Params* params);
CUptiResult ( *cuptiProfilerEndPassPtr ) (CUpti_Profiler_EndPass_Params* params);
CUptiResult ( *cuptiProfilerFlushCounterDataPtr ) (CUpti_Profiler_FlushCounterData_Params* params);
CUptiResult ( *cuptiProfilerUnsetConfigPtr ) (CUpti_Profiler_UnsetConfig_Params* params);
CUptiResult ( *cuptiProfilerEndSessionPtr ) (CUpti_Profiler_EndSession_Params* params);
CUptiResult ( *cuptiProfilerGetCounterAvailabilityPtr ) (CUpti_Profiler_GetCounterAvailability_Params* params);
CUptiResult ( *cuptiFinalizePtr ) (void);
// Function wrappers for the Cupti Profiler API //
static int initialize_cupti_profiler_api(void);
static int deinitialize_cupti_profiler_api(void);
static int enable_profiling(void);
static int begin_pass(void);
static int end_pass(void);
static int push_range(const char *pRangeName);
static int pop_range(void);
static int flush_data(void);
static int disable_profiling(void);
static int unset_config(void);
static int end_session(void);
// Perfworks API function pointers //
// Initialize
NVPA_Status ( *NVPW_InitializeHostPtr ) (NVPW_InitializeHost_Params* params);
// Enumeration
NVPA_Status ( *NVPW_MetricsEvaluator_GetMetricNamesPtr ) (NVPW_MetricsEvaluator_GetMetricNames_Params* pParams);
NVPA_Status ( *NVPW_MetricsEvaluator_GetSupportedSubmetricsPtr ) (NVPW_MetricsEvaluator_GetSupportedSubmetrics_Params* pParams);
NVPA_Status ( *NVPW_MetricsEvaluator_GetCounterPropertiesPtr ) (NVPW_MetricsEvaluator_GetCounterProperties_Params* pParams);
NVPA_Status ( *NVPW_MetricsEvaluator_GetRatioMetricPropertiesPtr ) (NVPW_MetricsEvaluator_GetRatioMetricProperties_Params* pParams);
NVPA_Status ( *NVPW_MetricsEvaluator_GetThroughputMetricPropertiesPtr ) (NVPW_MetricsEvaluator_GetThroughputMetricProperties_Params* pParams);
NVPA_Status ( *NVPW_MetricsEvaluator_GetMetricDimUnitsPtr ) (NVPW_MetricsEvaluator_GetMetricDimUnits_Params* pParams);
NVPA_Status ( *NVPW_MetricsEvaluator_DimUnitToStringPtr ) (NVPW_MetricsEvaluator_DimUnitToString_Params* pParams);
// Configuration
NVPA_Status ( *NVPW_MetricsEvaluator_ConvertMetricNameToMetricEvalRequestPtr ) (NVPW_MetricsEvaluator_ConvertMetricNameToMetricEvalRequest_Params* pParams);
NVPA_Status ( *NVPW_MetricsEvaluator_GetMetricRawDependenciesPtr ) (NVPW_MetricsEvaluator_GetMetricRawDependencies_Params* pParams);
NVPA_Status ( *NVPW_CUDA_RawMetricsConfig_Create_V2Ptr ) (NVPW_CUDA_RawMetricsConfig_Create_V2_Params* pParams);
NVPA_Status ( *NVPW_RawMetricsConfig_GenerateConfigImagePtr ) (NVPW_RawMetricsConfig_GenerateConfigImage_Params* params);
NVPA_Status ( *NVPW_RawMetricsConfig_GetConfigImagePtr ) (NVPW_RawMetricsConfig_GetConfigImage_Params* params);
NVPA_Status ( *NVPW_CounterDataBuilder_CreatePtr ) (NVPW_CounterDataBuilder_Create_Params* params);
NVPA_Status ( *NVPW_CounterDataBuilder_AddMetricsPtr ) (NVPW_CounterDataBuilder_AddMetrics_Params* params);
NVPA_Status ( *NVPW_CounterDataBuilder_GetCounterDataPrefixPtr ) (NVPW_CounterDataBuilder_GetCounterDataPrefix_Params* params);
NVPA_Status ( *NVPW_CUDA_CounterDataBuilder_CreatePtr ) (NVPW_CUDA_CounterDataBuilder_Create_Params* pParams);
NVPA_Status ( *NVPW_RawMetricsConfig_SetCounterAvailabilityPtr ) (NVPW_RawMetricsConfig_SetCounterAvailability_Params* params);
// Evaluation
NVPA_Status ( *NVPW_MetricsEvaluator_SetDeviceAttributesPtr ) (NVPW_MetricsEvaluator_SetDeviceAttributes_Params* pParams);
NVPA_Status ( *NVPW_MetricsEvaluator_EvaluateToGpuValuesPtr ) (NVPW_MetricsEvaluator_EvaluateToGpuValues_Params* pParams);
// Used in both enumeration and evaluation
NVPA_Status ( *NVPW_CUDA_MetricsEvaluator_InitializePtr ) (NVPW_CUDA_MetricsEvaluator_Initialize_Params* pParams);
NVPA_Status ( *NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSizePtr ) (NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSize_Params* pParams);
NVPA_Status ( *NVPW_RawMetricsConfig_GetNumPassesPtr ) (NVPW_RawMetricsConfig_GetNumPasses_Params* params);
NVPA_Status ( *NVPW_RawMetricsConfig_BeginPassGroupPtr ) (NVPW_RawMetricsConfig_BeginPassGroup_Params* params);
NVPA_Status ( *NVPW_RawMetricsConfig_EndPassGroupPtr ) (NVPW_RawMetricsConfig_EndPassGroup_Params* params);
NVPA_Status ( *NVPW_RawMetricsConfig_AddMetricsPtr ) (NVPW_RawMetricsConfig_AddMetrics_Params* params);
// Destroy
NVPA_Status ( *NVPW_RawMetricsConfig_DestroyPtr ) (NVPW_RawMetricsConfig_Destroy_Params* params);
NVPA_Status ( *NVPW_CounterDataBuilder_DestroyPtr ) (NVPW_CounterDataBuilder_Destroy_Params* params);
NVPA_Status ( *NVPW_MetricsEvaluator_DestroyPtr ) (NVPW_MetricsEvaluator_Destroy_Params* pParams);
// Misc.
NVPA_Status ( *NVPW_GetSupportedChipNamesPtr ) (NVPW_GetSupportedChipNames_Params* params);
// Helper functions for the MetricsEvaluator API //
// Initialize
static int initialize_perfworks_api(void);
// Enumeration
static int enumerate_metrics_for_unique_devices(const char *pChipName, int *totalNumMetrics, char ***arrayOfMetricNames);
static int get_rollup_metrics(NVPW_RollupOp rollupMetric, char **strRollupMetric);
static int get_supported_submetrics(NVPW_Submetric subMetric, char **strSubMetric);
static int get_metric_properties(const char *pChipName, const char *metricName, char *fullMetricDescription);
static int get_number_of_passes_for_info(const char *pChipName, NVPW_MetricsEvaluator *pMetricsEvaluator, NVPW_MetricEvalRequest *metricEvalRequest, int *numOfPasses);
// Configuration
static int get_metric_eval_request(NVPW_MetricsEvaluator *metricEvaluator, const char *metricName, NVPW_MetricEvalRequest *pMetricEvalRequest);
static int create_raw_metric_requests(NVPW_MetricsEvaluator *pMetricsEvaluator, NVPW_MetricEvalRequest *metricEvalRequest, NVPA_RawMetricRequest **rawMetricRequests, int *rawMetricRequestsCount);
// Metric Evaluation
static int get_number_of_passes_for_eventsets(const char *pChipName, const char *metricName, int *numOfPasses);
static int get_evaluated_metric_values(NVPW_MetricsEvaluator *pMetricsEvaluator, cuptip_gpu_state_t *gpu_ctl, long long *evaluatedMetricValues);
// Destroy MetricsEvaluator
static int destroy_metrics_evaluator(NVPW_MetricsEvaluator *pMetricsEvaluator);
// Helper functions for profiling //
static int start_profiling_session(byte_array_t counterDataImage, byte_array_t counterDataScratchBufferSize, byte_array_t configImage);
static int end_profiling_session(void);
static int get_config_image(const char *chipName, const uint8_t *pCounterAvailabilityImageData, NVPA_RawMetricRequest *rawMetricRequests, int rmr_count, byte_array_t *configImage);
static int get_counter_data_prefix_image(const char *chipName, NVPA_RawMetricRequest *rawMetricRequests, int rmr_count, byte_array_t *counterDataPrefixImage);
static int get_counter_data_image(byte_array_t counterDataPrefixImage, byte_array_t *counterDataScratchBuffer, byte_array_t *counterDataImage);
static int get_event_collection_method(const char *evt_name);
static int get_counter_availability(cuptip_gpu_state_t *gpu_ctl);
static void free_and_reset_configuration_images(cuptip_gpu_state_t *gpu_ctl);
// Functions related to Cuda component hash tables
static int init_main_htable(void);
static int init_event_table(void);
static void shutdown_event_table(void);
static void shutdown_event_stats_table(void);
// Functions related to NVIDIA device chips
static int assign_chipnames_for_a_device_index(void);
static int find_same_chipname(int dev_id);
// Functions related to the native event interface
static int get_ntv_events(cuptiu_event_table_t *evt_table, const char *evt_name, int dev_id);
static int verify_user_added_events(uint32_t *events_id, int num_events, cuptip_control_t state);
static int evt_id_to_info(uint32_t event_id, event_info_t *info);
static int evt_id_create(event_info_t *info, uint32_t *event_id);
static int evt_code_to_name(uint32_t event_code, char *name, int len);
static int evt_name_to_basename(const char *name, char *base, int len);
static int evt_name_to_device(const char *name, int *device, const char *base);
static int evt_name_to_stat(const char *name, int *stat, const char *base);
static int cuda_verify_no_repeated_qualifiers(const char *eventName);
static int cuda_verify_qualifiers(int flag, char *qualifierName, int equalitySignPosition, int *qualifierValue);
// Functions related to the stats qualifier
static int restructure_event_name(const char *input, char *output, char *base, char *stat);
static int is_stat(const char *token);
// Functions related to a partially disabled Cuda component
static int determine_dev_cc_major(int dev_id);
// Load and unload function pointers
static int load_cupti_perf_sym(void);
static int unload_cupti_perf_sym(void);
static int load_nvpw_sym(void);
static int unload_nvpw_sym(void);
/** @class load_cupti_perf_sym
* @brief Load cupti functions and assign to function pointers.
*/
static int load_cupti_perf_sym(void)
{
COMPDBG("Entering.\n");
if (dl_cupti == NULL) {
ERRDBG("libcupti.so should already be loaded.\n");
return PAPI_EMISC;
}
cuptiProfilerInitializePtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerInitialize");
cuptiProfilerDeInitializePtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerDeInitialize");
cuptiProfilerCounterDataImageCalculateSizePtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerCounterDataImageCalculateSize");
cuptiProfilerCounterDataImageInitializePtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerCounterDataImageInitialize");
cuptiProfilerCounterDataImageCalculateScratchBufferSizePtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerCounterDataImageCalculateScratchBufferSize");
cuptiProfilerCounterDataImageInitializeScratchBufferPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerCounterDataImageInitializeScratchBuffer");
cuptiProfilerBeginSessionPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerBeginSession");
cuptiProfilerSetConfigPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerSetConfig");
cuptiProfilerBeginPassPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerBeginPass");
cuptiProfilerEnableProfilingPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerEnableProfiling");
cuptiProfilerPushRangePtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerPushRange");
cuptiProfilerPopRangePtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerPopRange");
cuptiProfilerDisableProfilingPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerDisableProfiling");
cuptiProfilerEndPassPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerEndPass");
cuptiProfilerFlushCounterDataPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerFlushCounterData");
cuptiProfilerUnsetConfigPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerUnsetConfig");
cuptiProfilerEndSessionPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerEndSession");
cuptiProfilerGetCounterAvailabilityPtr = DLSYM_AND_CHECK(dl_cupti, "cuptiProfilerGetCounterAvailability");
cuptiFinalizePtr = DLSYM_AND_CHECK(dl_cupti, "cuptiFinalize");
return PAPI_OK;
}
/** @class unload_cupti_perf_sym
* @brief Unload cupti function pointers.
*/
static int unload_cupti_perf_sym(void)
{
if (dl_cupti) {
dlclose(dl_cupti);
dl_cupti = NULL;
}
cuptiProfilerInitializePtr = NULL;
cuptiProfilerDeInitializePtr = NULL;
cuptiProfilerCounterDataImageCalculateSizePtr = NULL;
cuptiProfilerCounterDataImageInitializePtr = NULL;
cuptiProfilerCounterDataImageCalculateScratchBufferSizePtr = NULL;
cuptiProfilerCounterDataImageInitializeScratchBufferPtr = NULL;
cuptiProfilerBeginSessionPtr = NULL;
cuptiProfilerSetConfigPtr = NULL;
cuptiProfilerBeginPassPtr = NULL;
cuptiProfilerEnableProfilingPtr = NULL;
cuptiProfilerPushRangePtr = NULL;
cuptiProfilerPopRangePtr = NULL;
cuptiProfilerDisableProfilingPtr = NULL;
cuptiProfilerEndPassPtr = NULL;
cuptiProfilerFlushCounterDataPtr = NULL;
cuptiProfilerUnsetConfigPtr = NULL;
cuptiProfilerEndSessionPtr = NULL;
cuptiProfilerGetCounterAvailabilityPtr = NULL;
cuptiFinalizePtr = NULL;
return PAPI_OK;
}
/**@class load_nvpw_sym
* @brief Search for a variation of the shared object libnvperf_host.
* Order of search is outlined below.
*
* 1. If a user sets PAPI_CUDA_PERFWORKS, this will take precedent over
* the options listed below to be searched.
* 2. If we fail to collect a variation of the shared object libnvperf_host from
* PAPI_CUDA_PERFWORKS or it is not set, we will search the path defined with PAPI_CUDA_ROOT;
* as this is supposed to always be set.
* 3. If we fail to collect a variation of the shared object libnvperf_host from steps 1 and 2,
* then we will search the linux default directories listed by /etc/ld.so.conf. As a note,
* updating the LD_LIBRARY_PATH is advised for this option.
* 4. We use dlopen to search for a variation of the shared object libnvperf_host.
* If this fails, then we failed to find a variation of the shared object libnvperf_host.
*/
static int load_nvpw_sym(void)
{
int soNamesToSearchCount = 3;
const char *soNamesToSearchFor[] = {"libnvperf_host.so", "libnvperf_host.so.1", "libnvperf_host"};
// If a user set PAPI_CUDA_PERFWORKS with a path, then search it for the shared object (takes precedent over PAPI_CUDA_ROOT)
char *papi_cuda_perfworks = getenv("PAPI_CUDA_PERFWORKS");
if (papi_cuda_perfworks) {
dl_nvpw = search_and_load_shared_objects(papi_cuda_perfworks, NULL, soNamesToSearchFor, soNamesToSearchCount);
}
char *soMainName = "libnvperf_host";
// If a user set PAPI_CUDA_ROOT with a path and we did not already find the shared object, then search it for the shared object
char *papi_cuda_root = getenv("PAPI_CUDA_ROOT");
if (papi_cuda_root && !dl_nvpw) {
dl_nvpw = search_and_load_shared_objects(papi_cuda_root, soMainName, soNamesToSearchFor, soNamesToSearchCount);
}
// Last ditch effort to find a variation of libnvperf_host, see dlopen manpages for how search occurs
if (!dl_nvpw) {
dl_nvpw = search_and_load_from_system_paths(soNamesToSearchFor, soNamesToSearchCount);
if (!dl_nvpw) {
ERRDBG("Loading libnvperf_host.so failed.\n");
goto fn_fail;
}
}
// Initialize
NVPW_InitializeHostPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_InitializeHost");
// Enumeration
NVPW_MetricsEvaluator_GetMetricNamesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_GetMetricNames");
NVPW_MetricsEvaluator_GetSupportedSubmetricsPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_GetSupportedSubmetrics");
NVPW_MetricsEvaluator_GetCounterPropertiesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_GetCounterProperties");
NVPW_MetricsEvaluator_GetRatioMetricPropertiesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_GetRatioMetricProperties");
NVPW_MetricsEvaluator_GetThroughputMetricPropertiesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_GetThroughputMetricProperties");
NVPW_MetricsEvaluator_GetMetricDimUnitsPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_GetMetricDimUnits");
NVPW_MetricsEvaluator_DimUnitToStringPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_DimUnitToString");
// Configuration
NVPW_MetricsEvaluator_ConvertMetricNameToMetricEvalRequestPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_ConvertMetricNameToMetricEvalRequest");
NVPW_MetricsEvaluator_GetMetricRawDependenciesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_GetMetricRawDependencies");
NVPW_CUDA_RawMetricsConfig_Create_V2Ptr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_CUDA_RawMetricsConfig_Create_V2");
NVPW_RawMetricsConfig_GenerateConfigImagePtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_RawMetricsConfig_GenerateConfigImage");
NVPW_RawMetricsConfig_GetConfigImagePtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_RawMetricsConfig_GetConfigImage");
NVPW_CounterDataBuilder_CreatePtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_CounterDataBuilder_Create");
NVPW_CounterDataBuilder_AddMetricsPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_CounterDataBuilder_AddMetrics");
NVPW_CounterDataBuilder_GetCounterDataPrefixPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_CounterDataBuilder_GetCounterDataPrefix");
NVPW_CUDA_CounterDataBuilder_CreatePtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_CUDA_CounterDataBuilder_Create");
NVPW_RawMetricsConfig_SetCounterAvailabilityPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_RawMetricsConfig_SetCounterAvailability");
// Evaluation
NVPW_MetricsEvaluator_SetDeviceAttributesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_SetDeviceAttributes");
NVPW_MetricsEvaluator_EvaluateToGpuValuesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_EvaluateToGpuValues");
// Used in both enumeration and evaluation
NVPW_CUDA_MetricsEvaluator_InitializePtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_CUDA_MetricsEvaluator_Initialize");
NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSizePtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSize");
NVPW_RawMetricsConfig_GetNumPassesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_RawMetricsConfig_GetNumPasses");
NVPW_RawMetricsConfig_BeginPassGroupPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_RawMetricsConfig_BeginPassGroup");
NVPW_RawMetricsConfig_EndPassGroupPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_RawMetricsConfig_EndPassGroup");
NVPW_RawMetricsConfig_AddMetricsPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_RawMetricsConfig_AddMetrics");
// Destroy
NVPW_RawMetricsConfig_DestroyPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_RawMetricsConfig_Destroy");
NVPW_CounterDataBuilder_DestroyPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_CounterDataBuilder_Destroy");
NVPW_MetricsEvaluator_DestroyPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_MetricsEvaluator_Destroy");
// Misc.
NVPW_GetSupportedChipNamesPtr = DLSYM_AND_CHECK(dl_nvpw, "NVPW_GetSupportedChipNames");
Dl_info info;
dladdr(NVPW_GetSupportedChipNamesPtr, &info);
LOGDBG("NVPW library loaded from %s\n", info.dli_fname);
return PAPI_OK;
fn_fail:
return PAPI_EMISC;
}
/** @class unload_nvpw_sym
* @brief Unload nvperf function pointers.
*/
static int unload_nvpw_sym(void)
{
if (dl_nvpw) {
dlclose(dl_nvpw);
dl_nvpw = NULL;
}
// Initialize
NVPW_InitializeHostPtr = NULL;
// Enumeration
NVPW_MetricsEvaluator_GetMetricNamesPtr = NULL;
NVPW_MetricsEvaluator_GetSupportedSubmetricsPtr = NULL;
NVPW_MetricsEvaluator_GetCounterPropertiesPtr = NULL;
NVPW_MetricsEvaluator_GetRatioMetricPropertiesPtr = NULL;
NVPW_MetricsEvaluator_GetThroughputMetricPropertiesPtr = NULL;
NVPW_MetricsEvaluator_GetMetricDimUnitsPtr = NULL;
NVPW_MetricsEvaluator_DimUnitToStringPtr = NULL;
// Configuration
NVPW_MetricsEvaluator_ConvertMetricNameToMetricEvalRequestPtr = NULL;
NVPW_MetricsEvaluator_GetMetricRawDependenciesPtr = NULL;
NVPW_CUDA_RawMetricsConfig_Create_V2Ptr = NULL;
NVPW_RawMetricsConfig_GenerateConfigImagePtr = NULL;
NVPW_RawMetricsConfig_GetConfigImagePtr = NULL;
NVPW_CounterDataBuilder_CreatePtr = NULL;
NVPW_CounterDataBuilder_AddMetricsPtr = NULL;
NVPW_CounterDataBuilder_GetCounterDataPrefixPtr = NULL;
NVPW_CUDA_CounterDataBuilder_CreatePtr = NULL;
NVPW_RawMetricsConfig_SetCounterAvailabilityPtr = NULL;
// Evaluation
NVPW_MetricsEvaluator_SetDeviceAttributesPtr = NULL;
NVPW_MetricsEvaluator_EvaluateToGpuValuesPtr = NULL;
// Used in both enumeration and evaluation
NVPW_CUDA_MetricsEvaluator_InitializePtr = NULL;
NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSizePtr = NULL;
NVPW_RawMetricsConfig_GetNumPassesPtr = NULL;
NVPW_RawMetricsConfig_BeginPassGroupPtr = NULL;
NVPW_RawMetricsConfig_EndPassGroupPtr = NULL;
NVPW_RawMetricsConfig_AddMetricsPtr = NULL;
// Destroy
NVPW_RawMetricsConfig_DestroyPtr = NULL;
NVPW_CounterDataBuilder_DestroyPtr = NULL;
NVPW_MetricsEvaluator_DestroyPtr = NULL;
// Misc.
NVPW_GetSupportedChipNamesPtr = NULL;
return PAPI_OK;
}
/** @class initialize_perfworks_api
* @brief Initialize the Perfworks API.
*/
static int initialize_perfworks_api(void)
{
COMPDBG("Entering.\n");
NVPW_InitializeHost_Params perfInitHostParams = {NVPW_InitializeHost_Params_STRUCT_SIZE};
perfInitHostParams.pPriv = NULL;
nvpwCheckErrors( NVPW_InitializeHostPtr(&perfInitHostParams), return PAPI_EMISC );
return PAPI_OK;
}
/** @class get_counter_availability
* @brief Query counter availability. Helps to filter unavailable raw metrics on host.
* @param *gpu_ctl
* Structure of type cuptip_gpu_state_t which has member variables such as
* dev_id, rawMetricRequests, numberOfRawMetricRequests, and more.
*/
static int get_counter_availability(cuptip_gpu_state_t *gpu_ctl)
{
CUpti_Profiler_GetCounterAvailability_Params getCounterAvailabilityParams = {CUpti_Profiler_GetCounterAvailability_Params_STRUCT_SIZE};
getCounterAvailabilityParams.pPriv = NULL;
getCounterAvailabilityParams.ctx = NULL; // If NULL, the current CUcontext is used
getCounterAvailabilityParams.pCounterAvailabilityImage = NULL;
cuptiCheckErrors( cuptiProfilerGetCounterAvailabilityPtr(&getCounterAvailabilityParams), return PAPI_EMISC );
// Allocate the necessary memory for data
gpu_ctl->counterAvailabilityImage.size = getCounterAvailabilityParams.counterAvailabilityImageSize;
gpu_ctl->counterAvailabilityImage.data = (uint8_t *) malloc(gpu_ctl->counterAvailabilityImage.size);
if (gpu_ctl->counterAvailabilityImage.data == NULL) {
ERRDBG("Failed to allocate memory for counterAvailabilityImage.data.\n");
return PAPI_ENOMEM;
}
getCounterAvailabilityParams.pCounterAvailabilityImage = gpu_ctl->counterAvailabilityImage.data;
cuptiCheckErrors( cuptiProfilerGetCounterAvailabilityPtr(&getCounterAvailabilityParams), return PAPI_EMISC );
return PAPI_OK;
}
/** @class free_and_reset_configuration_images
* @brief Free and reset the configuration images created in
* cuptip_ctx_start.
* @param *gpu_ctl
* Structure of type cuptip_gpu_state_t which has member variables such as
* dev_id, rawMetricRequests, numberOfRawMetricRequests, and more.
*/
void free_and_reset_configuration_images(cuptip_gpu_state_t *gpu_ctl)
{
COMPDBG("Entering.\n");
// Note that you can find the memory allocation for the below variables
// in cuptip_ctx_start as of April 21st, 2025
free(gpu_ctl->configImage.data);
gpu_ctl->configImage.data = NULL;
gpu_ctl->configImage.size = 0;
free(gpu_ctl->counterDataPrefixImage.data);
gpu_ctl->counterDataPrefixImage.data = NULL;
gpu_ctl->counterDataPrefixImage.size = 0;
free(gpu_ctl->counterDataScratchBuffer.data);
gpu_ctl->counterDataScratchBuffer.data = NULL;
gpu_ctl->counterDataScratchBuffer.size = 0;
free(gpu_ctl->counterDataImage.data);
gpu_ctl->counterDataImage.data = NULL;
gpu_ctl->counterDataImage.size = 0;
free(gpu_ctl->counterAvailabilityImage.data);
gpu_ctl->counterAvailabilityImage.data = NULL;
gpu_ctl->counterAvailabilityImage.size = 0;
}
/** @class find_same_chipname
* @brief Check to see if chipnames are identical.
*
* @param dev_id
* A gpu id number, e.g 0, 1, 2, etc.
*/
static int find_same_chipname(int dev_id)
{
int i;
for (i = 0; i < dev_id; i++) {
if (!strcmp(cuptiu_table_p->avail_gpu_info[dev_id].chipName, cuptiu_table_p->avail_gpu_info[i].chipName)) {
return i;
}
}
return -1;
}
/** @class init_main_htable
* @brief Initialize the main htable used to collect metrics.
*/
static int init_main_htable(void)
{
// Allocate (2 ^ NAMEID_WIDTH) metric names, this matches the
// number of bits for the event encoding format
int i, val = 1, base = 2;
for (i = 0; i < NAMEID_WIDTH; i++) {
val *= base;
}
cuptiu_table_p = (cuptiu_event_table_t *) malloc(sizeof(cuptiu_event_table_t));
if (cuptiu_table_p == NULL) {
ERRDBG("Failed to allocate memory for cuptiu_table_p.\n");
return PAPI_ENOMEM;
}
cuptiu_table_p->capacity = val;
cuptiu_table_p->count = 0;
cuptiu_table_p->event_stats_count = 0;
cuptiu_table_p->events = (cuptiu_event_t *) calloc(val, sizeof(cuptiu_event_t));
if (cuptiu_table_p->events == NULL) {
ERRDBG("Failed to allocate memory for cuptiu_table_p->events.\n");
return PAPI_ENOMEM;
}
cuptiu_table_p->event_stats = (StringVector *) calloc(val, sizeof(StringVector));
if (cuptiu_table_p->event_stats == NULL) {
ERRDBG("Failed to allocate memory for cuptiu_table_p->event_stats.\n");
return PAPI_ENOMEM;
}
cuptiu_table_p->avail_gpu_info = (gpu_record_t *) calloc(numDevicesOnMachine, sizeof(gpu_record_t));
if (cuptiu_table_p->avail_gpu_info == NULL) {
ERRDBG("Failed to allocate memory for cuptiu_table_p->avail_gpu_info.\n");
return PAPI_ENOMEM;
}
// Initialize the main hash table for metric collection
htable_init(&cuptiu_table_p->htable);
return PAPI_OK;
}
/** @class cuptip_init
* @brief Load and initialize API's.
*/
int cuptip_init(void)
{
COMPDBG("Entering.\n");
int papi_errno = load_cupti_perf_sym();
papi_errno += load_nvpw_sym();
if (papi_errno != PAPI_OK) {
cuptic_err_set_last("Unable to load CUDA library functions.");
return papi_errno;
}
// Collect the number of devices on the machine
papi_errno = cuptic_device_get_count(&numDevicesOnMachine);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
if (numDevicesOnMachine <= 0) {
cuptic_err_set_last("No GPUs found on system.");
return PAPI_ECMP;
}
// Initialize the Cupti Profiler and Perfworks API's
papi_errno = initialize_cupti_profiler_api();
papi_errno += initialize_perfworks_api();
if (papi_errno != PAPI_OK) {
cuptic_err_set_last("Unable to initialize CUPTI profiler libraries.");
return PAPI_EMISC;
}
papi_errno = init_main_htable();
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = assign_chipnames_for_a_device_index();
if (papi_errno != PAPI_OK) {
return papi_errno;
}
// Collect the available metrics on the machine
papi_errno = init_event_table();
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = cuInitPtr(0);
if (papi_errno != CUDA_SUCCESS) {
cuptic_err_set_last("Failed to initialize CUDA driver API.");
return PAPI_EMISC;
}
return PAPI_OK;
}
/** @class verify_user_added_events
* @brief For user added events, verify they exist and do not require
* multiple passes. If both are true, store metadata.
* @param *events_id
* Cuda native event id's.
* @param num_events
* Number of Cuda native events a user is wanting to count.
* @param state
* Struct that holds read count, running, cuptip_info_t, and
* cuptip_gpu_state_t.
*/
int verify_user_added_events(uint32_t *events_id, int num_events, cuptip_control_t state)
{
int i, papi_errno;
for (i = 0; i < numDevicesOnMachine; i++) {
papi_errno = cuptiu_event_table_create_init_capacity(
num_events,
sizeof(cuptiu_event_t), &(state->gpu_ctl[i].added_events)
);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
}
for (i = 0; i < num_events; i++) {
event_info_t info;
papi_errno = evt_id_to_info(events_id[i], &info);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
// Verify the user added event exists
void *p;
if (htable_find(cuptiu_table_p->htable, cuptiu_table_p->events[info.nameid].name, (void **) &p) != HTABLE_SUCCESS) {
return PAPI_ENOEVNT;
}
char stat[PAPI_HUGE_STR_LEN]="";
int strLen;
if (info.stat < NUM_STATS_QUALS){
strLen = snprintf(stat, sizeof(stat), "%s", stats[info.stat]);
if (strLen < 0 || strLen >= sizeof(stat)) {
SUBDBG("Failed to fully write statistic qualifier.\n");
return PAPI_ENOMEM;
}
}
const char *stat_position = strstr(cuptiu_table_p->events[info.nameid].basenameWithStatReplaced, "stat");
if (stat_position == NULL) {
ERRDBG("Event does not have a 'stat' placeholder.\n");
return PAPI_EBUG;
}
// Reconstructing event name. Append the basename, stat, and sub-metric.
size_t basename_len = stat_position - cuptiu_table_p->events[info.nameid].basenameWithStatReplaced;
char reconstructedEventName[PAPI_HUGE_STR_LEN]="";
strLen = snprintf(reconstructedEventName, PAPI_MAX_STR_LEN, "%.*s%s%s",
(int)basename_len,
cuptiu_table_p->events[info.nameid].basenameWithStatReplaced,
stat,
stat_position + 4);
if (strLen < 0 || strLen >= PAPI_MAX_STR_LEN) {
SUBDBG("Failed to fully write reconstructed event name.\n");
return PAPI_EBUF;
}
// Verify the user added event does not require multiple passes
int numOfPasses;
papi_errno = get_number_of_passes_for_eventsets(cuptiu_table_p->avail_gpu_info[info.device].chipName, reconstructedEventName, &numOfPasses);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
if (numOfPasses > 1) {
return PAPI_EMULPASS;
}
// For a specific device table, get the current event index
int idx = state->gpu_ctl[info.device].added_events->count;
// Store metadata
strLen = snprintf(state->gpu_ctl[info.device].added_events->cuda_evts[idx],
PAPI_MAX_STR_LEN, "%s", reconstructedEventName);
if (strLen < 0 || strLen >= PAPI_MAX_STR_LEN) {
SUBDBG("Failed to fully write reconstructed Cuda event name to array of added events.\n");
return PAPI_EBUF;
}
state->gpu_ctl[info.device].added_events->cuda_devs[idx] = info.device;
state->gpu_ctl[info.device].added_events->evt_pos[idx] = i;
state->gpu_ctl[info.device].added_events->count++; /* total number of events added for a specific device */
}
return PAPI_OK;
}
/** @class cuptip_ctx_create
* @brief Create a profiling context for the requested Cuda events.
* @param thr_info
* @param *pstate
* Struct that holds read count, running, cuptip_info_t, and
* cuptip_gpu_state_t.
* @param *events_id
* Cuda native event id's.
* @param num_events
* Number of Cuda native events a user is wanting to count.
*/
int cuptip_ctx_create(cuptic_info_t thr_info, cuptip_control_t *pstate, uint32_t *events_id, int num_events)
{
COMPDBG("Entering.\n");
cuptip_control_t state = (cuptip_control_t) calloc (1, sizeof(struct cuptip_control_s));
if (state == NULL) {
SUBDBG("Failed to allocate memory for state.\n");
return PAPI_ENOMEM;
}
state->gpu_ctl = (cuptip_gpu_state_t *) calloc(numDevicesOnMachine, sizeof(cuptip_gpu_state_t));
if (state->gpu_ctl == NULL) {
SUBDBG("Failed to allocate memory for state->gpu_ctl.\n");
return PAPI_ENOMEM;
}
long long *counters = (long long *) malloc(num_events * sizeof(*counters));
if (counters == NULL) {
SUBDBG("Failed to allocate memory for counters.\n");
return PAPI_ENOMEM;
}
int dev_id;
for (dev_id = 0; dev_id < numDevicesOnMachine; dev_id++) {
state->gpu_ctl[dev_id].dev_id = dev_id;
}
event_info_t info;
int papi_errno = evt_id_to_info(events_id[num_events - 1], &info);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
// Store a user created cuda context or create one
papi_errno = cuptic_ctxarr_update_current(thr_info, info.device);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
// Verify user added events are available on the machine
papi_errno = verify_user_added_events(events_id, num_events, state);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
state->info = thr_info;
state->counters = counters;
*pstate = state;
return PAPI_OK;
}
/** @class cuptip_ctx_start
* @brief Code to start counting Cuda hardware events in an event set.
* @param state
* Struct that holds read count, running, cuptip_info_t, and
* cuptip_gpu_state_t.
*/
int cuptip_ctx_start(cuptip_control_t state)
{
COMPDBG("Entering.\n");
int papi_errno = PAPI_OK;
cuptip_gpu_state_t *gpu_ctl;
CUcontext userCtx, ctx;
// Return the Cuda context bound to the calling CPU thread
cudaCheckErrors( cuCtxGetCurrentPtr(&userCtx), return PAPI_EMISC );
// Enumerate through the devices a user has added an event for
int dev_id;
for (dev_id = 0; dev_id < numDevicesOnMachine; dev_id++) {
// Skip devices that will require the Events API to be profiled
int cupti_api = determine_dev_cc_major(dev_id);
if (cupti_api != API_PERFWORKS) {
if (cupti_api == API_EVENTS) {
continue;
}
else {
return PAPI_EMISC;
}
}
gpu_ctl = &(state->gpu_ctl[dev_id]);
if (gpu_ctl->added_events->count == 0) {
continue;
}
LOGDBG("Device num %d: event_count %d, rmr count %d\n", dev_id, gpu_ctl->added_events->count, gpu_ctl->numberOfRawMetricRequests);
papi_errno = cuptic_device_acquire(state->gpu_ctl[dev_id].added_events);
if (papi_errno != PAPI_OK) {
ERRDBG("Profiling same gpu from multiple event sets not allowed.\n");
return papi_errno;
}
// Get the cuda context
papi_errno = cuptic_ctxarr_get_ctx(state->info, dev_id, &ctx);
// Bind the specified CUDA context to the calling CPU thread
cudaCheckErrors( cuCtxSetCurrentPtr(ctx), return PAPI_EMISC );
// Query/filter cuda native events available on host
papi_errno = get_counter_availability(gpu_ctl);
if (papi_errno != PAPI_OK) {
ERRDBG("Error getting counter availability image.\n");
return papi_errno;
}
NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSize_Params calculateScratchBufferSizeParam = {NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSize_Params_STRUCT_SIZE};
calculateScratchBufferSizeParam.pChipName = cuptiu_table_p->avail_gpu_info[dev_id].chipName;
calculateScratchBufferSizeParam.pCounterAvailabilityImage = NULL;
calculateScratchBufferSizeParam.pPriv = NULL;
nvpwCheckErrors( NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSizePtr(&calculateScratchBufferSizeParam), return PAPI_EMISC );
uint8_t myScratchBuffer[calculateScratchBufferSizeParam.scratchBufferSize];
NVPW_CUDA_MetricsEvaluator_Initialize_Params metricEvaluatorInitializeParams = {NVPW_CUDA_MetricsEvaluator_Initialize_Params_STRUCT_SIZE};
metricEvaluatorInitializeParams.scratchBufferSize = calculateScratchBufferSizeParam.scratchBufferSize;
metricEvaluatorInitializeParams.pScratchBuffer = myScratchBuffer;
metricEvaluatorInitializeParams.pChipName = cuptiu_table_p->avail_gpu_info[dev_id].chipName;
metricEvaluatorInitializeParams.pCounterAvailabilityImage = NULL;
metricEvaluatorInitializeParams.pCounterDataImage = NULL;
metricEvaluatorInitializeParams.pPriv = NULL;
nvpwCheckErrors( NVPW_CUDA_MetricsEvaluator_InitializePtr(&metricEvaluatorInitializeParams), return PAPI_EMISC );
NVPW_MetricsEvaluator *pMetricsEvaluator = metricEvaluatorInitializeParams.pMetricsEvaluator;
NVPA_RawMetricRequest *rawMetricRequests = NULL;
int i, numOfRawMetricRequests = 0;
for (i = 0; i < gpu_ctl->added_events->count; i++) {
NVPW_MetricEvalRequest metricEvalRequest;
papi_errno = get_metric_eval_request(pMetricsEvaluator, gpu_ctl->added_events->cuda_evts[i], &metricEvalRequest);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = create_raw_metric_requests(pMetricsEvaluator, &metricEvalRequest, &rawMetricRequests, &numOfRawMetricRequests);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
}
gpu_ctl->rawMetricRequests = rawMetricRequests;
gpu_ctl->numberOfRawMetricRequests = numOfRawMetricRequests;
papi_errno = get_config_image(cuptiu_table_p->avail_gpu_info[dev_id].chipName, gpu_ctl->counterAvailabilityImage.data, gpu_ctl->rawMetricRequests, gpu_ctl->numberOfRawMetricRequests, &gpu_ctl->configImage);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = get_counter_data_prefix_image(cuptiu_table_p->avail_gpu_info[dev_id].chipName, gpu_ctl->rawMetricRequests, gpu_ctl->numberOfRawMetricRequests, &gpu_ctl->counterDataPrefixImage);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = get_counter_data_image(gpu_ctl->counterDataPrefixImage, &gpu_ctl->counterDataScratchBuffer, &gpu_ctl->counterDataImage);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = start_profiling_session(gpu_ctl->counterDataImage, gpu_ctl->counterDataScratchBuffer, gpu_ctl->configImage);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = begin_pass();
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = enable_profiling();
if (papi_errno != PAPI_OK) {
return papi_errno;
}
char rangeName[PAPI_MIN_STR_LEN];
int strLen = snprintf(rangeName, PAPI_MIN_STR_LEN, "PAPI_Range_%d", gpu_ctl->dev_id);
if (strLen < 0 || strLen >= PAPI_MIN_STR_LEN) {
ERRDBG("Failed to fully write range name.\n");
return PAPI_EBUF;
}
papi_errno = push_range(rangeName);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = destroy_metrics_evaluator(pMetricsEvaluator);
if (papi_errno != PAPI_OK) {
return papi_errno;
}
}
cudaCheckErrors( cuCtxSetCurrentPtr(userCtx), return PAPI_EMISC );
return PAPI_OK;
}
/** @class cuptip_ctx_read
* @brief Query an array of numeric values corresponding
* to each user added event.
* @param state
* Struct that holds read count, running, cuptip_info_t, and
* cuptip_gpu_state_t.
* @param **counters
* An array which holds numeric values for the corresponding
* user added event.
*/
int cuptip_ctx_read(cuptip_control_t state, long long **counters)
{
COMPDBG("Entering.\n");
long long *counter_vals = state->counters;
CUcontext userCtx = NULL, ctx = NULL;
cudaArtCheckErrors( cuCtxGetCurrentPtr(&userCtx), return PAPI_EMISC );
int dev_id;
for (dev_id = 0; dev_id < numDevicesOnMachine; dev_id++) {
// Skip devices that will require the Events API to be profiled
int cupti_api = determine_dev_cc_major(dev_id);
if (cupti_api != API_PERFWORKS) {
if (cupti_api == API_EVENTS) {
continue;
}
else {
return PAPI_EMISC;
}
}
cuptip_gpu_state_t *gpu_ctl = &(state->gpu_ctl[dev_id]);
if (gpu_ctl->added_events->count == 0) {
continue;
}
cudaArtCheckErrors( cuptic_ctxarr_get_ctx(state->info, dev_id, &ctx), return PAPI_EMISC );
cudaArtCheckErrors( cuCtxSetCurrentPtr(ctx), return PAPI_EMISC );
int papi_errno = pop_range();
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = end_pass();
if (papi_errno != PAPI_OK) {
return papi_errno;
}
papi_errno = flush_data();
if (papi_errno != PAPI_OK) {
return papi_errno;
}
NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSize_Params calculateScratchBufferSizeParam = {NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSize_Params_STRUCT_SIZE};
calculateScratchBufferSizeParam.pChipName = cuptiu_table_p->avail_gpu_info[dev_id].chipName;
calculateScratchBufferSizeParam.pCounterAvailabilityImage = NULL;
calculateScratchBufferSizeParam.pPriv = NULL;
nvpwCheckErrors( NVPW_CUDA_MetricsEvaluator_CalculateScratchBufferSizePtr(&calculateScratchBufferSizeParam), return PAPI_EMISC );
uint8_t myScratchBuffer[calculateScratchBufferSizeParam.scratchBufferSize];
NVPW_CUDA_MetricsEvaluator_Initialize_Params metricEvaluatorInitializeParams = {NVPW_CUDA_MetricsEvaluator_Initialize_Params_STRUCT_SIZE};
metricEvaluatorInitializeParams.scratchBufferSize = calculateScratchBufferSizeParam.scratchBufferSize;
metricEvaluatorInitializeParams.pScratchBuffer = myScratchBuffer;
metricEvaluatorInitializeParams.pChipName = cuptiu_table_p->avail_gpu_info[dev_id].chipName;
metricEvaluatorInitializeParams.pCounterAvailabilityImage = NULL;
metricEvaluatorInitializeParams.pCounterDataImage = NULL;
metricEvaluatorInitializeParams.pPriv = NULL;
nvpwCheckErrors( NVPW_CUDA_MetricsEvaluator_InitializePtr(&metricEvaluatorInitializeParams), return PAPI_EMISC );
NVPW_MetricsEvaluator *pMetricsEvaluator = metricEvaluatorInitializeParams.pMetricsEvaluator;
long long *metricValues = (long long *) calloc(gpu_ctl->added_events->count, sizeof(long long));
if (metricValues == NULL) {
SUBDBG("Failed to allocate memory for metricValues.\n");
return PAPI_ENOMEM;
}