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  •   2 months ago

trn2.3xlarge instance

Hi, I’m trying to launch a trn2.3xlarge for Phase 1 using the provided AWS credits. I’m currently getting Insufficient capacity when launching On-Demand in São Paulo. Is there a recommended region/AZ or a Capacity Block workflow for competition participants?

  • 4 comments

  •   •   2 months ago

    Same issue here. I noticed there was a trn2.48xlarge in us-east-2 with historical spot pricing around $8.6, but I haven't tried it yet

  •   •   2 months ago

    Adding hard data to this thread — I hit the same wall, and the first blocker turned out not to be capacity.

    On a fresh account the Trn quotas in sa-east-1 default to zero:

    L-2C3B7624 Running On-Demand Trn instances 0
    L-6B0D517C All Trn Spot Instance Requests 0

    So some teams may be stopped at the quota gate before they ever reach an "Insufficient capacity" error. Worth checking with:

    aws service-quotas list-service-quotas --region sa-east-1 --service-code ec2 --query "Quotas[?contains(QuotaName,'Trn')].[QuotaCode,QuotaName,Value]"

    On regions — I queried DescribeInstanceTypeOfferings directly. trn2.3xlarge is offered in exactly one region I can reach:

    sa-east-1 YES (all three AZs: 1a / 1b / 1c)
    us-east-1 no
    us-east-2 no
    us-west-2 no
    ap-northeast-1 no
    ap-southeast-2 no
    eu-west-1 no

    ap-southeast-4 (Melbourne) I could not check — it is an opt-in region not enabled on my account. Third-party instance databases list it as the only other region offering trn2.3xlarge, so it may be worth enabling.

    The Capacity Blocks route returns:

    CapacityBlockDescribeLimitExceeded: Your existing service limits for this AWS account are not sufficient to use EC2 Capacity Blocks.

    On cost, for anyone budgeting: spot for trn2.3xlarge in sa-east-1b has been running $7.58-7.71/hr over the past week, and trn2.3xlarge does not appear in the public price list at all, so the on-demand rate is not discoverable before launch. Against a $3,000 credit that is roughly 390 instance-hours for a 29-day window — worth knowing before anyone leaves an instance running overnight.

    Two questions for the organizers:

    1. Is sa-east-1 the intended region for Phase 1, and is there capacity reserved for competition participants?

    2. Should we be requesting a Capacity Blocks limit increase, or an On-Demand Trn quota increase? Is there a reference we can cite in the support case so it gets routed correctly?

    Phase 1 closes Sept 30 and the leaderboard opened Aug 31 — a day of blocked access is a meaningful fraction of the window.

  • Manager   •   2 months ago

    For those who need capacity increases, please fill out this link: https://pulse.amazon/survey/B2D7WSLE?p=0
    Also, 48xl is only in US east 2
    3xl is only in Sao Paulo and Melbourne

  • Manager   •   2 months ago

    there is no on demand instances for trainium only capacity blocks

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