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Installing GPUDirect Storage for IBM Spectrum Scale
IBM Spectrum Scale support for GPUDirect Storage (GDS) enables a direct path between GPU memory and storage.
For information about the prerequisites, see Planning for GPUDirect Storage.
Perform the following steps to install GDS:
Checking the installation
Perform the following steps to check the installation of GDS:
- Run the NVIDIA GDS utility gdscheck -p before you run the GDS workloads to verify the environment. You need Python3 installed on the node to run this utility.
- Verify the status of PCIe Access Control Services (ACS) and PCIe
Input/Output Memory Management Unit (IOMMU), as these components affect GDS function and
performance. The output of the gdscheck -p utility must display the following
status for IOMMU and ACS components: :
IOMMU disabled ACS disabled
- Check for IBM
Spectrum Scale support in the output of
gdscheck -p as shown in the following example:
# gdscheck -p | grep "Spectrum Scale" IBM Spectrum Scale : Supported
- If the GPFS log (mmfs log) contains the following information after you start IBM
Spectrum Scale, it indicates that the GDS support is
successfully enabled:
and[I] VERBS DC API loaded.
[I] VERBS DC API initialized.
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