Missing PCIe througput metric in nsys-report

Developer Tools Nsight Systems Profiling Linux Targets
1

Hello,

I am trying to profile a CUDA workload (needleman-wunsch from rodinia) using the following command on an A100-

EDIT: I have MIG mode enabled. The report is generated when running is workload on a MIG instance. Not sure if that affects profiling.

sudo nsys profile --trace=cuda,nvtx,osrt --cuda-event-trace=false --gpu-metrics-devices=1 \
--gpu-metrics-set=ga100 --force-overwrite true -o needle_profile ./needle 8192 10

I get the following nsys-report -

needle_nsys_rep
needle_nsys_rep1597×404 35.9 KB

It’s missing the PCIe bandwidth metric, which I need. How do I fix this issue?

I am attaching the report here -
needle_profile.zip (311.5 KB)

Thanks.

2

@pkovalenko

3

PCIe metrics are not available when profiling MIG instances. You may want to profile the full chip GPU for that.

4

The PCIe metrics are not available when in MIG where the MIG partition is not the full GPU. PCIe is a shared unit. The performance counter are not virtualized per GPU instance or compute instance.

The two options are to either:

  1. run with MIG disabled
  2. run with MIG that is a full device