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Charging Model

A. HPC Service (Effective from February 2023)

Charge Type Charging Unit Unit Charge (HKD)

PolyU User Collaborator External User
CPU CPU core-hour 0.05 0.22 1.1
GPU GPU card-hour 2.2 4.4 22
Storage 100 GB-month 2.3 4.6 23

1. UBDA reserves the right determine whether a user should be charged as PolyU User, Collaborators or External User.

2. Users of current PolyU staff and students with a valid PolyU NETID is regarded as “PolyU Users”.

3. Users from other UGC-funded tertiary institutions and users form companies with ongoing collaborative projects with principal investigators at PolyU is regarded as “Collaborators”.

4. Users from commercial companies without ongoing collaborators with PolyU is regarded as “External Users”.

5. All charging rates are subject to change without prior notice. Users should refer to the latest version of this charging scheme, which is available on UBDA webpage.

6. Charging model will be reviewed yearly.


Assume a user has 200GB storage quota and using the 5,000 HKD free quota, a user can use the resources in the following manner.



B. Virtual Machine Service

i. CPU and Memory

No. of vCPU No. of Memory(GB) Hourly Rate (HKD)

PolyU User Collaborator External User
2 4 0.30 0.60 3
2 8 0.50 1 5
4 16 1 2 10
8 32 2 4 20
16 64 4 8 40
32 128 8 16 80

ii. Disk

Type Unit Charge (HKD)

PolyU User Collaborator External User
100 GB per month 22 44 220


C. JupyterHub Service

Free access up to 31 December 2020.

With effect from 1 January 2021:

Hourly Rate (HKD) (Effective from 1 Jan 2021)
PolyU User Collaborator External User
2.8 5.6 28


Free Quota

The free quota would be renewed when the new financial year starts (i.e. the next round of fee quota would be renewed and valid from 1 Jul 2022 – 30 Jun 2023). Current users’ platform charges would be automatically deducted the amount of free quota ($ 5,000) when the charges are over $5,000 and receive an invoice for the settlement of outstanding charges. For new users, they will enjoy the free quota and be charged when the amount exceeds $5,000. Each current and new user’s free quota would be renewed when the next financial year starts from so on. As such, users don’t need to inform us when and how the free quota be used to settle the payment since the final amount to be charged would automatically deducted the free quota assigned to users accordingly.



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