DMAPerfWarnings

Fully qualified name: cupva_utils::DMAPerfWarnings

Defined in cupva_host_utils.hpp

std::string cupva_utils::DMAPerfWarnings(cupva::CmdProgram &program)

Report potential perf issues due to suboptimal DMA configs.

This function will detect and generate these DMA warnings:

1. A RDF or GSDF is decomposed to SWSEQ.

2. Line pitch of an inbound SDF or RDF’s source buffer is not 64-byte aligned.

3. Tile width of an SDF or RDF is not 64-byte aligned.

4. Any data flow requires more than 1 round trips to MC to fetch the data.

Usage considerations

• Allowed context for the API call

  • Interrupt handler: No

  • Signal handler: No

  • Thread-safe: No

  • Re-entrant: No

  • Async/Sync: Sync

• Required privileges: None

• Allowed execution state

  • Initialization: Yes

  • Operational: Yes

  • Reinit/Deinit Preparation: Yes

• Maturity: GA

Parameters:

program – The program to log information about

Returns:

The perf warning string

Pre:

cupva::CmdProgram::compileDataFlows must be invoked on the CmdProgram prior to calling this API.