Re: [Mplapack-devel] FW: Fortran examples
Status: Pre-Alpha
Brought to you by:
nakatamaho
From: Maho N. <ch...@ma...> - 2011-04-05 06:45:16
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From: Maho NAKATA <ch...@ma...> Subject: Re: [Mplapack-devel] FW: Fortran examples Date: Tue, 05 Apr 2011 11:08:52 +0900 (JST) > Hi, > > From: "Fletcher, John P" <j.p...@as...> > Subject: RE: [Mplapack-devel] FW: Fortran examples > Date: Fri, 01 Apr 2011 09:58:54 +0100 > >> Nakata Maho >> >> I was looking at the choice last night. I think I am going to use mpfr (mpreal C++ interface) and mpcomplex. I needed to reorder the libraries, -lmpc before -lmpfr as a test case was not linking properly. I had copied MPFRLIBS in the examples/mlapack Makefile. > > thanks for your comment. Could you please tell me which part of MPACK is wrong? > >> There does not seem to be an operator<< in mcomplex but it should not be much work for me to make one. > > Could you please tell me what "operator <<" do for mpcomplex? > >> I am using gfortran, so plan to follow the MAGMA style to make an interface, but I will start with some C++ examples with MPACK to get a better understanding. I am more familiar with LAPACK than MPFR. > > ok. Please let me know when idea comes up. Gfortran interface is also very important. > >> You will find I am quite active at the moment on the MAGMA forum. >> >> Are you in touch with Goto Kazusige? There is unfortunately a bug of some sort in the Nehalem version of GotoBlas2 which means that safe operation requires use of the 4 core version even on an 8 core machine. It does not look as though maintenance is being done any more on the distribution site. >> >> I don't have full details but can get them if needed. > > I e-mailed to Goto Kazushige-san to ask your question. Goto san kindly told me that even though logical core is counted as eight, GotoBLAS2 enumerate the number of physical core and set it as the number of threads. thanks -- Nakata Maho http://accc.riken.jp/maho/ , JA OOO http://ja.openoffice.org/ http://blog.goo.ne.jp/nakatamaho/ ,GPG: http://accc.riken.jp/maho/maho.pgp.txt |