https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Persistance-of-random-number-generator-state/m-p/895446#M10861 <P>VSLhas functions vslsavestreamf/vslloadstreamf for storing/restoring descriptive data of random stream to and from binary files. They may be very useful in time consuming Monte Carlo simulations.</P> <P>You also might want to use vslcopystream (or vslcopystreamstate) functions to store copy of the random stream (or its state) in memory.</P> <P>More details about storing/restoring random streams are available in MKL Manual and VSL Notes. I do not have all details regarding to your application; however, it appears that it is not required to hold random stream in a common block to maintain persistence as library service functionality mentioned above helps to do this.<BR />Does it answer your question?</P> <P>Thanks,<BR />Andrey </P> Fri, 09 Nov 2007 09:11:59 GMT Andrey_N_Intel 2007-11-09T09:11:59Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Persistance-of-random-number-generator-state/m-p/895445#M10860 I am used to old fashioned Fortran code where I saved the state of my random number generators by putting the current seed/state into a common block. Rather than run a bunch of tests, I would like to ask here how do I maintain persistance of the random number generators? I need to generate a large number of random numbers for Monte Carlo ray tracing, but the number of random numbers required for each ray is unknown ahead of time. In my legacy code, I just save the seed/state in a common block and call a random number generator from within the subroutine that makes the Monte Carlo decision and using the seed to get a new random number. Do the "streams" need to be maintained in a common block or passed through my chains of subroutine arguments in order to maintain persistance and independence of the random numbers?<BR /><BR />Thanks very much!<BR /> Wed, 07 Nov 2007 15:58:18 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Persistance-of-random-number-generator-state/m-p/895445#M10860 Thomas_H_4 2007-11-07T15:58:18Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Persistance-of-random-number-generator-state/m-p/895446#M10861 <P>VSLhas functions vslsavestreamf/vslloadstreamf for storing/restoring descriptive data of random stream to and from binary files. They may be very useful in time consuming Monte Carlo simulations.</P> <P>You also might want to use vslcopystream (or vslcopystreamstate) functions to store copy of the random stream (or its state) in memory.</P> <P>More details about storing/restoring random streams are available in MKL Manual and VSL Notes. I do not have all details regarding to your application; however, it appears that it is not required to hold random stream in a common block to maintain persistence as library service functionality mentioned above helps to do this.<BR />Does it answer your question?</P> <P>Thanks,<BR />Andrey </P> Fri, 09 Nov 2007 09:11:59 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Persistance-of-random-number-generator-state/m-p/895446#M10861 Andrey_N_Intel 2007-11-09T09:11:59Z