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Honored Contributor
Honored Contributorcan single work items kernels run in parallel on same device
Can single work item kernels run in parallel on the same device (i.e. on the same board). I've been trying to get a very simple example of task parallelism working but have not been able to ...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- but you could try using CL_MEM_COPY_HOST_PTR instead of CL_MEM_USE_HOST_PTR --- Quote End --- This did not help. --- Quote Start --- adding the 'restrict' flag to your global variables in the kernel --- Quote End --- This did not help either. However, this got me tinkering though. I did try changing the CL_MEM_READ_WRITE to CL_MEM_WRITE_ONLY. This did work!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! $ bin/host 100000 4 Reprogramming device [0] with handle 1 Task:2 complete (4.529 ms) Task:3 complete (4.556 ms) Task:0 complete (4.559 ms) Task:1 complete (4.561 ms) Time: 4.563 ms (1.141 ms / kernel) Sum 0-100000.000000 (step 1.000000) = 5000050000.000000 Sum 0-100000.000000 (step 1.000000) = 5000050000.000000 Sum 0-100000.000000 (step 1.000000) = 5000050000.000000 Sum 0-100000.000000 (step 1.000000) = 5000050000.000000 https://alteraforum.com/forum/attachment.php?attachmentid=14753&stc=1 Thanks SO MUCH to nicolacdnll and fand for giving some new suggestions that FINALLY lead to a solution!
