[vegetablepotpie]

I can think of two possibilities: 1. Hardware accelerated custom crypto algorithms. 2. Specialized co-processor. You could implement an exotic processing architecture on the FPGA to off-load computations to, like a complex number processor with 52-bit words in a custom floating point format for a specific application.

[agumonkey]

I don't know how fast the FPGA can reconfigure itself or part of it, but you could also have per process bare metal JIT

[slivym]

It takes in the order of seconds to reconfigure. JIT is not really viable.

[tfmkevin]

Nope. Reconfiguration takes milliseconds. Also, Arria 10 supports partial reconfiguration which means that the FPGA can keep operating while some of the logic is reconfigured via bitstream.

[agumonkey]

we need to jit the fpga jit jit then

[GuB-42]

Another use case is if you have a large amount of asynchronous I/O and real time constraints.