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Parallella Community • View topic - Latency in cycles for interrupts and events.
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Latency in cycles for interrupts and events.

PostPosted: Sat Dec 22, 2012 11:35 pm
by cdg2lax
While the doc specify the number of cycles per type of instruction I could not found any info on the following:

1) Latency of Floating point SW exception, ...?
2) Event counter interrupt (#cycles between the counter reaching zero and the execution of the interrupt assuming that no other interrupt with higher priority showed up or interrupt are disabled)
3) Latency of test&set with read in the same core? In a directly adjacent core (Manhattan) Also does that instruction as it's own logic logic when reaching out in a distant core or does a non local read modify happen?

Thanks!

Re: Latency in cycles for interrupts and events.

PostPosted: Thu Dec 27, 2012 8:41 pm
by aolofsson