<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">It seems confused. You can compile SPRNG with/without MPI. However, even if you compile it with MPI support, it can still be run as a serial RNG.<div class=""><br class=""><div class="">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; ">-gideon</span>
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<br class=""><div><blockquote type="cite" class=""><div class="">On Dec 11, 2015, at 2:40 PM, Hong <<a href="mailto:hzhang@mcs.anl.gov" class="">hzhang@mcs.anl.gov</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote">Barry :<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">
> there is a comment:<br class="">
><br class="">
> This is NOT currently using a parallel random number generator. Sprng does have<br class="">
> an MPI version we should investigate.<br class=""></div></div></blockquote><div class=""> </div><div class="">Shall we remove this comment? </div><div class="">Hong</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5"><br class="">
>> On Dec 11, 2015, at 11:30 AM, Hong <<a href="mailto:hzhang@mcs.anl.gov" class="">hzhang@mcs.anl.gov</a>> wrote:<br class="">
>><br class="">
>> Gideon:<br class="">
>> I was looking at the source files and noticed in the comments that when petsc is built with sprng, the petsc interface isn’t to the parallel sprng RNG. But is the package built with MPI, so that I could manually use the parallel RNG?<br class="">
>> Petsc- sprng-1.0 interface was written many years ago.<br class="">
>> It is for parallel computation. Students contributed an example at<br class="">
>> petsc/src/sys/classes/random/examples/tutorials/ex2.c<br class="">
>><br class="">
>> Very few users have ever used this interface.<br class="">
>> If you encounter any problem, please report to us.<br class="">
>><br class="">
>> Hong<br class="">
>><br class="">
><br class="">
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