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Altera_Forum
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12 years ago

Atomic operation on global memory

Atomic operation on global memory do have some problem based on my code. The value of global_offset[0] is 508 after the fpga computation, it should be 512. __attribute__ ((reqd_work_group_s...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Neither the Nios cpu not the Avalon bus have support for atomic read-modify-write cycles.

Not only that there is also no data cache snooping.

So you'll have to try a lot harder to synchronise between different masters.