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Altera_Forum's avatar
Altera_Forum
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12 years ago

Could the global variable shared between two kernels in the same aocx file?

Say, in the same aocx file, one kernel (the host call it first) writes to the global variable, while the other kernel (the host call it second) will read from it. is that that possible?
Altera_Forum's avatar
Altera_Forum
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12 years ago

You might want to put the data into a named section and get the linker script(s) to assign it to a fixed address.

You'll need to worry about cache coherenceny.

Also there are no atomic RMW cycles on the Avalon bus, so you need to use something else to ensure correct sequencing of accesses.