This is a test suite for Accelerator Images to test RDMA bandwidth performance and verify that the RDMA NIC can approach the line rate.

GPU availability may be limited for Accelerator Images, specifically for A3 Ultra, A4, etc. This is an example quota error:

Code: QUOTA_EXCEEDED
Message: Quota 'GPUS_PER_GPU_FAMILY' exceeded.  Limit: 16.0 in region europe-west1

In any GCP project where there is available GPU quota, a reservation should have automatically been created when the quota was granted. The reservation should not need to be manually created.

If there is a reservation for GPU capacity, the following flags should be set:

• "use_reservations" should be set to true
• "reservation_urls" should be the name of the reservation(s)

Note that in the test suites, if the reservation is set to ANY_RESERVATION, such as like this,

&compute.ReservationAffinity{ConsumeReservationType: "ANY_RESERVATION"}

it may not find the specific reservation you want. Instead, the reservation needs to be set to "SPECIFIC_RESERVATION" with the reservation name.

&compute.ReservationAffinity{ConsumeReservationType: "SPECIFIC_RESERVATION",
Values: []string{"fake-reservation"},
Key: "compute.googleapis.com/reservation-name"},

The same applies to ReservationAffinityBeta.

Any changes to the test suite may also require changes in params here: https://github.com/GoogleCloudPlatform/oss-test-infra/blob/master/prow/prowjobs/GoogleCloudPlatform/gcp-guest/gcp-guest-config.yaml

Note that when a new reservation is created, it can sometimes change the name of the old reservation. This means that the reservation parameters in the periodic tests may need to change as well.