Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

Difference between RAM blocks and Memory Bits?

I recently encounter abnormal usage about RAM blocks. my code is like: # define A_PARALLEL 16# define B_PARALLEL 32 typedef struct{ float kk[A_PARALLEL]; } A_parallel; typed...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

If you want to disable the cache on global memory LSU you need to mark the "pointer" as volatile and not the data type B_parallel, so instead of

__kernel foo(__global volatile const B_parallel *W, int count)

you're looking for:

__kernel foo(__global const B_parallel * volatile W, int count)

Also note, that const and __constant are different.