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Altera_Forum's avatar
Altera_Forum
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8 years ago

Different Kernel Executions times

Hi! I'm getting a strange thing when executing a kernel multiples times (inside a loop). The first execution always take a long time compared to the others.. Example: Number of calls: 10...
Altera_Forum's avatar
Altera_Forum
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8 years ago

Interesting, did you figure out the problem? Which board are you using? Try to use the profiler to check the actual kernel runtime.

It's actually quite common in GPU programming, usually we use a warm-up kernel to get around the power-saving status so we can measure the correct runtime,

haven't encounter this on my Arria10 FPGA though.