Hello to all!.
I usually deal with large ZRD database when doing non-sequential ray traces. Usually this means that displaying detector information or doing ray database filtering takes a considerable amount of time.
What is the main bottleneck for the speed of these analysis/processing in Zemax that could be improved by upgrading the PC components?
Thank you
+2Hi Tomas,
I’ll just give my opinion (someone with more hardware knowledge could still respond). A ZRD file is a binary file that has to be read sequentially, segment by segment. This is because to efficiently pack the ZRD file, after the header section of the ZRD file with version number and maximum allowed segments, each individual segment is defined by a 4-byte integer storing the number of segments for the current ray and then a 232-byte struct. You don’t know where the next ray starts in the binary file until all the segments are read from the previous ray.
With that said, the 3 main impacts for ZRD speed will be:
The things that would not affect the speed of reading ZRD file:
*The Number of CPUs will affect the NSC Ray Trace, so it will drastically speed up the creation of a ZRD file since OpticStudio can chunk the number of rays each CPU/thread will trace. But once the ZRD is created, it has to be read sequentially on a single thread.
There are additional recommendations in the following articles:
https://community.zemax.com/got-a-question-7/new-computer-performance-advice-3550
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
Do not provide any information or data that is restricted by applicable law, including by the People’s Republic of China’s Cybersecurity and Data Security Laws ( e.g., Important Data, National Core Data, etc.).
不要提供任何受适用法律，包括中华人民共和国的网络安全和数据安全法限制的信息或数据（如重要数据、国家核心数据等）。