Answering my own question a little, on further exploration the Intel optimisation actually has a good chapter on avx512: https://www.intel.com/content/www/us/en

Answering my own question a little, on further exploration the Intel optimisation actually has a good chapter on avx512: https://www.intel.com/content/www/us/en/content-details/671488/intel-64-and-ia-32-architectures-optimization-reference-manual.html https://www.intel.com/content/www/us/en/content-details/6714...