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Björne's avatar
Björne
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2 years ago

Why does aoc set ii to 6 when I use high clock frequencies?

I have a simple toy that I want to run at 1000 MHz kernel that doesn't do much: __attribute__((uses_global_work_offset(0))) __attribute__((max_global_work_dim(0))) __kernel void netsim( __global...
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BoonBengT_Altera's avatar
BoonBengT_Altera
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2 years ago

Hi @Björne,


As mention the tool involved are Intel OpenCL, the product mention has been deprecated and are now on the best effort support only. Hence would recommended to move to the newer and similar tools Intel OneAPI.

To add on to the mention request, the clock frequency for openCL are set in the BSP, hence changing that is not recommended as that required a separate BSP customization flow. However if some reason the kernel code ar not able to run with the mention frequency, you can look into the OpenCL kernel clock generator, as mention in the link below:

- https://www.intel.com/content/www/us/en/docs/programmable/683398/18-1/opencl-kernel-clock-generator-opencl.html

Hope that clarify.


Best Wishes

BB


Björne2's avatar
Björne2
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2 years ago

I'm not sure what you mean by reference design. The kernel I'm compiling is the one shown in the source code. The compile command I'm using is: aoc -bsp-flow=flat -seed=251 -parallel=16 -ffp-contract=fast -ffp-reassociate -clock=1000MHz -O3 test.cl where 251 is just some random number I picked.