What is the best way (fast and relatively simple to implement) to send gmp of type mpf_t using MPI (in c)?
a simple code will be helpful.
thank you
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Karthick Kumar
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possible duplicate of [send array of mpz\_t over mpi](http://stackoverflow.com/questions/5280359/send-array-of-mpz-t-over-mpi) – Hristo Iliev Apr 17 '14 at 12:41
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@HristoIliev, this is about `mpf_t` (floating) and my question/answer was about `mpz_t` (integer), so no duplicate. Only `mpz_t` type havs export and import. – osgx Apr 17 '14 at 12:44
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Yes, just saw that GMP does not support exporting and importing floating-point numbers and retracted the vote. – Hristo Iliev Apr 17 '14 at 12:45
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mpf_t uses several pointers, so you should serialize mpf_t (and other GMP types) before sending via MPI.
There were some letters about MPI in GMP mailing list: https://gmplib.org/list-archives/gmp-discuss/2008-March/003091.html
There is article about MPI wrapper library for GMP (MPIGMP + MPIBNCpack): http://na-inet.jp/na/bnc/brief_intro_mpibncpack.pdf
Also there were solution of mpf_t serialization into file, you can reuse it to serialize into byte array and send it over MPI: How to serialize the GMP mpf type? (explained in https://gmplib.org/list-archives/gmp-discuss/2007-November/002981.html)
