Hi all, I am cooperating with a volunteer computing project (yoyo@home, if anyone knows it), and I need MPIR to build a performance-crucial application on Windows that will be run on heterogenous CPU. The last version I built also uses MPIR, and I am really grateful of all your work.
This time, since the performance of the arbitrary-precision arithmetic is extremely important, a fat binary is needed. I downloaded the master branch from Git, and I used mingw64 on msys as build environment, with the following option for configure ./configure --disable-fft --disable-shared --enable-fat The "make" and "make check" were successful, but when compiling the application, mingw64-g++ hinted that there are duplicated symbols, namely g?mpn_k8_redc_1 in mpn/bobcat/redc_1.asm and ?mpn_core2_redc_1 in mpn/sandybridge/redc_1.asm. I did a renaming to get rid of this problem, and the application compiles. But then when I tested it against another build with the following option ./configure --disable-fft --disable-shared the fat binary is slower by about 10%. Furthermore, comparing to GMP on cygwin64, there is also a large slowdown. Here are some rough timing: msys-mpir-fat ~60min msys-mpir-nofat ~55min cygwin64-gmp-nofat ~40min I was not able to build MPIR on cygwin, it was more or less stucked when building libmpn.la with libtool. I have used the --with-system-yasm option (or else it complains on cygwin-style symbolic links). The build environment: CPU: i7 3720QM (Ivy Bridge) Memory: 8GB MPIR version: 2014-02-26 Mingw64 version: gcc-4.8.2 Msys version: 2011-11-23 I would deeply appreciate any useful suggestion. Thank you in advance! Cheers, fwjmath. -- You received this message because you are subscribed to the Google Groups "mpir-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to mpir-devel+unsubscr...@googlegroups.com. To post to this group, send email to mpir-devel@googlegroups.com. Visit this group at http://groups.google.com/group/mpir-devel. For more options, visit https://groups.google.com/groups/opt_out.
