When running ‘nvidia-smi dmon --gpm-metrics=2,3,4,5’ (other metric choices present the same issue)
each gpm metric is reported as ‘0’ for the first update and ‘-’ thereafter.
System:
Ubuntu 20.04.5 LTS (GNU/Linux 5.15.0-1013-oracle x86_64)
NVIDIA A100-SXM4-80GB
NVIDIA-SMI 525.60.13
and same result on Windows:
Windows 10 Pro 64-bit
NVIDIA GeForce RTX 3090
NVIDIA-SMI 526.47
Is a specific version of nvml / debug mode / system configuration required for accessing these stats?
Since nvidia-smi wraps nvml, I wrote a quick C++ nvml program to test gpm-metrics queries. ‘nvmlGpmQueryDeviceSupport’ returns isSupportedDevice=0 for both cards listed above (both Ampere).
From the NVML API ref, Ampere is not listed as a fully supported device architecture.
nvidia-smi man page also states “If any of the metric is not supported on the device or any other error in fetching the metric is reported as “-” in the output data.”
Hi @gkennickell ,
I notice the same problem as you, but I read the NVML API documentation differently. The A100 should be supported?
For a full list of supported Linux OS distributions, refer to the Tesla driver release notes at NVIDIA Data Center GPU Driver Documentation.
Supported products
- Full Support
- NVIDIA Tesla Line:
- A100, A40, A30, A16, A10
- T4
…
I see no change no matter if I access the gpm metrics as a regular user or as “root” - is there some kernel module parameter that needs to be enabled to allow access to the gpm metrics?
Hi @nsmeds – I was using the documentation in the header file regarding supported devices:
It wasn’t clear if the A100 was technically considered Tesla since the ‘Tesla’ moniker was dropped at the same time as its initial release, instead it was branded Data Center GPU. But the API ref doc you linked clears that up.
I haven’t had the opportunity to test if ‘isSupportedDevice’ returns True for an older card like the V100; that might help determine if it’s truly a support-level issue, or if, like you mention, a kernel parameter needs to be set in order to use.
This usage appears to work, though. Also from the man page for nvidia-smi. Even PCI metrics appears :-D Next step would be to see if they can be verified. It is not clear what is shown, instantaneous values or a mean over the sample interval. But at least it is something that probably can be used for comparaisons between runs.
And there is no indication of FP usage, or tensor core utilization and other metrics that are also of interest.
[nsmeds@ice0102 sample1]$ nvidia-smi dmon -s pucvmet -o DT
#Date Time gpu pwr gtemp mtemp sm mem enc dec mclk pclk pviol tviol fb bar1 sbecc dbecc pci rxpci txpci
#YYYYMMDD HH:MM:SS Idx W C C % % % % MHz MHz % bool MB MB errs errs errs MB/s MB/s
20230608 18:54:55 0 195 50 51 92 56 0 0 1215 1410 0 0 38609 4 0 0 0 21 318
20230608 18:54:55 1 224 51 54 59 44 0 0 1215 1410 0 0 38609 4 0 0 0 2264 0
20230608 18:54:55 2 86 48 50 74 54 0 0 1215 1410 0 0 38609 4 0 0 0 21 7
20230608 18:54:55 3 200 50 53 74 55 0 0 1215 1395 0 0 38609 4 0 0 0 20 2811
20230608 18:54:55 4 226 55 59 62 44 0 0 1215 1410 0 0 38609 4 0 0 0 3684 3
20230608 18:54:55 5 237 55 56 74 58 0 0 1215 1410 0 0 38609 4 0 0 0 31 7
20230608 18:54:55 6 68 55 56 75 54 0 0 1215 1395 0 0 38609 4 0 0 0 2630 2
20230608 18:54:55 7 92 56 57 68 47 0 0 1215 1410 0 0 38609 4 0 0 0 1453 5
20230608 18:54:57 0 182 49 50 92 59 0 0 1215 1410 0 0 38609 4 0 0 0 29 7
20230608 18:54:57 1 234 51 54 74 54 0 0 1215 1410 0 0 38609 4 0 0 0 2626 3
20230608 18:54:57 2 110 49 52 73 58 0 0 1215 1410 0 0 38609 4 0 0 0 1756 5
20230608 18:54:57 3 188 50 53 75 59 0 0 1215 1410 0 0 38609 4 0 0 0 28 7
20230608 18:54:57 4 215 56 58 74 54 0 0 1215 1410 0 0 38609 4 0 0 0 2273 354
20230608 18:54:57 5 239 56 59 59 44 0 0 1215 1410 0 0 38609 4 0 0 0 2850 6
20230608 18:54:57 6 68 54 55 61 44 0 0 1215 1410 0 0 38609 4 0 0 0 30 6
20230608 18:54:57 7 219 57 59 76 53 0 0 1215 1395 0 0 38609 4 0 0 0 2707 892
GPM metrics are not supported in the pre-H100 SKU.
Thanks,
So the return code from the query is correct. It would be good if nvidia-smi wrote a warning that some metrics requested are nor available and then output “-” consistently for these (not only three first iteration).
/Nils
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