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Altera_Forum
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8 years ago

How OpenCL handles multiple accelerators on FPGA

Hi everyone, I would have two questions about how OpenCL manages multiple accelerators into FPGA: 1) Can I access to two or more accelerators at the same time if I have only one PCIe bus? 2) ...
Altera_Forum's avatar
Altera_Forum
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8 years ago

If they are in the same ".cl" file, then you will only have one bitstream which includes both kernels. In this context, you can use the kernels in parallel without needing to wait for one to finish to start the other one (unless there is a data dependency between them). In this case, there will be no need for dynamic reconfiguration either, since there is just one bitstream.

Dynamic reconfiguration is only needed when you have more than one ".cl" file, which will give you more than one bitstream.