Default limits and quotas for Analytics Engine instances
The following sections provide details about the default limit and quota settings for IBM Analytics Engine serverless instances.
These default values are set to avoid excessive billing, however the values can be set to larger defaults based on user requirements by opening a support ticket.
Application limits
The following table lists the default limits and quotas for Analytics Engine instances.
| Category | Default |
|---|---|
| Maximum number of instances per account | 5 |
| Maximum cores per instance | 150 |
| Maximum memory per instances | 600 GB |
| Shuffle space per core | approx. 30 GB (Not customizable) |
| Maximum time applications can run | 72 hours (Not customizable) |
Supported Spark driver and executor vCPU and memory combinations
The IBM Analytics Engine Standard serverless plan for Apache Spark supports only the following pre-defined Spark driver and executor vCPU and memory combinations.
These two vCPU to memory proportions are supported: 1 vCPU to 4 GB of memory and 1 vCPU to 8 GB of memory.
The following table shows the supported vCPU to memory size combinations.
| 1 : 2 ratio | 1 : 4 ratio | 1 : 8 ratio |
|---|---|---|
| 1 vCPU x 2 GB | 1 vCPU x 4 GB | 1 vCPU x 8 GB |
| 2 vCPU x 4 GB | 2 vCPU x 8 GB | 2 vCPU x 16 GB |
| 3 vCPU x 6 GB | 3 vCPU x 12 GB | 3 vCPU x 24 GB |
| 4 vCPU x 8 GB | 4 vCPU x 16 GB | 4 vCPU x 32 GB |
| 5 vCPU x 10 GB | 5 vCPU x 20 GB | |
| 6 vCPU x 12 GB | 6 vCPU x 24 GB | 6 vCPU x 48 GB |
| 7 vCPU x 14 GB | 7 vCPU x 28 GB | |
| 8 vCPU x 16 GB | 8 vCPU x 32 GB | |
| 10 vCPU x 20 GB | 10 vCPU x 40 GB | |
| 12 vCPU x 24 GB | 12 vCPU x 48 GB |
The default vCPU to memory combinations are:
- Default Spark driver size: 1vCPU and 4GB memory
- Default Spark executor size: 1vCPU and 4GB memory