AVX-512 is SIMD and in that respect compiled Intel routines will run almost automatically on Intel processors. It's not like I was answering the question. I realize or under realize the implementation problems. You need to do a side by side comparison of the die.
On Mon, Jun 21, 2021, 7:47 AM Andrew M.A. Cater <amaca...@einval.com> wrote: > On Mon, Jun 21, 2021 at 09:46:30AM -0400, Joe Landman wrote: > > On 6/21/21 9:20 AM, Jonathan Engwall wrote: > > > I have followed this thinking "square peg, round hole." > > > You have got it again, Joe. Compilers are your problem. > > > > > > Erp ... did I mess up again? > > > > Here's where awesome compiler support would help. FWIW, gcc isn't that > > great a compiler. Its not performance minded for HPC. Its a reasonable > > general purpose standards compliant (for some subset of standards) > > compilation system. LLVM is IMO a better compiler system, and its > > clang/flang are developing nicely, albeit still not really HPC focused. > > Then you have variants built on that. Like the Cray compiler, Nvidia > > compiler and AMD compiler. These are HPC focused, and actually do quite > well > > with some codes (though the AMD version lags the Cray and Nvidia > compilers). > > You've got the Intel compiler, which would be a good general compiler if > it > > wasn't more of a marketing vehicle for Intel processors and their > features > > (hey you got an AMD chip? you will take the slowest code path even if > you > > support the features needed for the high performance code path). > > > > Maybe, someday, we'll get a great HPC compiler for C/Fortran. > > > The problem is that, maybe, the HPC market is still not _quite_ big enough > to merit a dedicated set of compilers and is diverse enough in its problem > sets that we still need a dozen or more specialist use cases to work well. > > You would think there would be a cross-over point where massively parallel > scalable cloud infrastructure wold intersect with HPC but that doesn't > seem to be happening. Parallelisation is the great bugbear anyway. > > Most of the experts I know on all of this are the regulars on this list: > paging Greg Lindahl ... > > All the best, > > Andy Cater > > > > > -- > > Joe Landman > > e: joe.land...@gmail.com > > t: @hpcjoe > > w: https://scalability.org > > g: https://github.com/joelandman > > l: https://www.linkedin.com/in/joelandman > > > > > _______________________________________________ > > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > > To change your subscription (digest mode or unsubscribe) visit > https://beowulf.org/cgi-bin/mailman/listinfo/beowulf > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > https://beowulf.org/cgi-bin/mailman/listinfo/beowulf >
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