PetscLogGpuEnergy#

turn on the logging of GPU energy (estimated with power*gtime) for GPU kernels

Synopsis#

#include "petscsys.h"   
PetscErrorCode PetscLogGpuEnergy(void)

Options Database Key#

-log_view_gpu_energy - provide the GPU energy consumption (estimated with power*gtime) for all events in the -log_view output

Note#

This option is mutually exclusive to -log_view_gpu_energy_meter.

Developer Note#

This option turns on energy monitoring of GPU kernels and requires CUDA version >= 12.2. The energy consumption is estimated as instant_power * gpu_kernel_time. Due to the delay in NVML power sampling, we read the instantaneous power draw at the end of each event using nvmlDeviceGetFieldValues() with the field ID NVML_FI_DEV_POWER_INSTANT.

Level#

advanced

Location#

src/sys/logging/plog.c

Index of all Log routines
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Index of all manual pages