feat: add hami_host_gpu_memory_controller_utilization_ratio metric - #2616
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📝 WalkthroughWalkthroughThe vGPU monitor adds host GPU memory-controller utilization metrics, node labels, node-name validation, and expanded MIG allocation labels. Tests cover descriptor registration, collection errors, legacy metrics, and emitted gauge values. ChangesGPU monitor metrics
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🟡 Moderate · up to The new metric currently omits the node label, so dashboards and queries that join host GPU metrics by node cannot reliably correlate it with existing utilization metrics. This localized correctness issue should be fixed before merge. Possibly related issues
Possibly related PRs
Suggested reviewers: Poem
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✅ Passed checks (3 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Actionable comments posted: 1
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Verify each finding against current code. Fix only still-valid issues, skip the
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Inline comments:
In `@cmd/vGPUmonitor/metrics_test.go`:
- Around line 82-103: Replace the manual metric construction in
TestCollectMemoryControllerUtilizationValue with a mocked nvml.Device
implementing GetUtilizationRates, GetUUID, and GetName, then exercise
collectGPUUtilizationMetrics. Collect the emitted metric and assert util.Memory
plus the device_index, device_uuid, and device_type labels match the mock
values.
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cmd/vGPUmonitor/metrics.gocmd/vGPUmonitor/metrics_test.go
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@manoj-1407
In PR #2580 node label was added to host GPU metrics and imported pkg/util. Because of package name shadowing with pkg/util, util was renamed to utilRates in collectGPUUtilizationMetrics.
Can you make the required changes in your code so there won't be any conflicts. A simple rename will resolve this.
Once done. Do inform me..
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please also add relevent doc to the https://github.com/Project-HAMi/website |
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please resolve thsese conflicts |
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/assign @archlitchi |
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Actionable comments posted: 1
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Inline comments:
In `@cmd/vGPUmonitor/metrics.go`:
- Around line 70-74: Add the node label to the
hami_host_gpu_memory_controller_utilization_ratio descriptor and pass nodeName
in the corresponding metric emission, preserving the existing label order and
values for device_index, device_uuid, and device_type.
Apply the same fix in `@cmd/vGPUmonitor/metrics_test.go` around lines 201 - 211.
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cmd/vGPUmonitor/metrics.gocmd/vGPUmonitor/metrics_test.go
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GetUtilizationRates() returns both Gpu (SM) and Memory (memory controller)
utilization. hami_host_gpu_utilization_ratio already exports util.Gpu.
util.Memory was fetched but silently discarded.
Add hami_host_gpu_memory_controller_utilization_ratio with identical label
set {device_index, device_uuid, device_type}. SM and memory controller
utilization diverge on memory-bandwidth-bound workloads (LLM inference),
making this metric independently useful for alerting on memory bus saturation.
Signed-off-by: G. Manoj Kumar <manojkumar148700@gmail.com>
Signed-off-by: manoj-1407 <manojkumar148700@gmail.com>
…er utilization metric - TestDescribeRegistersMemoryControllerUtilization: verifies hami_host_gpu_memory_controller_utilization_ratio appears in Describe() - TestCollectMemoryControllerUtilizationValue: checks the actual gauge value emitted via the descriptor, covering the sendMetric call flagged by codecov Signed-off-by: manoj-1407 <manojkumar148700@gmail.com>
Signed-off-by: manoj-1407 <manojkumar148700@gmail.com>
…vice Signed-off-by: manoj-1407 <manojkumar148700@gmail.com>
Signed-off-by: manoj-1407 <manojkumar148700@gmail.com>
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: archlitchi, manoj-1407 The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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5 participants
What type of PR is this?
/kind feature
What this PR does / why we need it:
was looking at collectGPUUtilizationMetrics and noticed we call
GetUtilizationRates() which returns both Gpu and Memory but Memory
just gets ignored after the call. wired it up as
hami_host_gpu_memory_controller_utilization_ratio. no extra NVML
calls, data was already there. matters on inference workloads where
memory bandwidth fills up way before SM does.
Which issue(s) this PR fixes:
Fixes #2613
Special notes for your reviewer:
three line change essentially. one descriptor, one Describe entry,
one sendMetric.
Does this PR introduce a user-facing change?:
yes — hami_host_gpu_memory_controller_utilization_ratio gauge
I used Claude to help identify this gap. I reviewed the code and
understand the implementation.
Summary by CodeRabbit
New Features
Tests