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GRodr25's avatar
GRodr25
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6 years ago

Work-group scheduling in FPGA pipeline

Hello, I have a question on work-group scheduling on multiple CUs in FPGA. As work-groups are assigned to available CUs, when is a CU considered available? Is it when the last work-item of the previo...
MEIYAN_L_Intel's avatar
MEIYAN_L_Intel
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6 years ago

Hi,

According to the document https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/opencl-sdk/aocl-best-practices-guide.pdf, the compute unit is available for work-group assignments as long as it has not reached its full capacity. Each work-group will map to compute unit if there are enough compute units. If there are not enough compute units, OpenCL will give each work-group to this compute unit one by one on a serial fashion.

Thanks

  • GRodr25's avatar
    GRodr25
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    6 years ago

    So I understand from your answer that the first work-item enters the pipeline when its first stage is free, right (although the rest of them are occupied by work-items from another work-group)?

    Thank you. ​