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DongWang-BJTU's avatar
DongWang-BJTU
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Emulator v19.3 is much slower than v19.1/18.1

I have currently upgraded to OpenCLSDK v19.3 and found that the legacy emulator is much slower than previous versions. I am using the same OpenCL code with the same compilation configurations. Is t...
MEIYAN_L_Intel's avatar
MEIYAN_L_Intel
Icon for Frequent Contributor rankFrequent Contributor
6 years ago

Hi,

I had compare the both version in getting start guide. I saw that the memory requirement and RAM requirement are the same.

Sometimes with newer versions, it might requires higher computer specs.

Compilation to the same design files with slower time, there might be some computer spec performance issues. Firewall / antivirus might also affect the performance.

You may need to monitor the memory usage while run compilation to check the consumption by the tool.

Soft reminder: Changes of OpenCL SDK v19.3 can be found here:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/rn/archives/rn_aocl-19-3.pdf

Thanks

DongWang-BJTU's avatar
DongWang-BJTU
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Hi thanks for the reply.

I just releaized that I am using the lagecy emulator for SDK v18.1 and v19.1 and the new "fast" emulator for v19.3. Because they have changed the compilation options for v19.3 (you have to explicitly specify -legacy-emulator to use the old legacy emulator). So my observation is that the new emulator is running much slower during emulation (not during compilation) than the old legacy one.