Hi Jeff, Does your code link against GMP? Is it possible that it is picking up an old GMP version on your machine?
I guess you realise you have to build MPIR with ./configure --enable-gmpcompat and when you do make install you need to follow that with make install-gmpcompat. As for the CPU detection not working, I don't have an explanation for that. In MPIR 1.1.0 cpuid.c definitely reports Family 6 Model 23 as penryn (a fancy Core2). Can you post the output of cat /proc/cpuinfo for this machine? Bill. 2009/4/16 Jeff Gilchrist <jeff.gilchr...@gmail.com>: > > On Wed, Apr 15, 2009 at 2:33 PM, Bill Hart <goodwillh...@googlemail.com> > wrote: > >> As no issues with the MPIR 1.1.0 release candidate were found after >> extensive testing, we are making release candidate 1 the final >> release. > > Here are some benchmarks. With K8, MPIR is very competitive with the > new GMP. For some reason my core2 builds are strange. The MPIR 1.1 > library is much slower than 1.0. Config in 1.0 and 1.1 is detecting > the system as: x86_64-unknown-linux-gnu so trying to use K8 code with > it. I'm not sure why there is such a speed difference between the 1.0 > and 1.1 K8 code on a Core 2 though. > > MPIR Benchmarks > =============== > mpz_mul(t, r, r); > mpz_sub_ui(t, t, 2); > mpz_mod(r, t, p); > > Intel Xeon E5405 @ 2.0GHz (Family 6, Model 23, Stepping 6) > Linux 64bit, gcc version 4.1.2 > 83338 bits (25088 digits) > Library Time1 Time2 > ---------- --------- --------- > GMP 4.3.0 2m34.857s 2m34.835s > MPIR 1.0.0 3m17.198s 3m17.288s > GMP 4.2.4 5m38.156s 5m38.173s > MPIR 1.1.0 5m45.308s 5m45.236s > > > AMD Opteron 248 @ 2.2GHz (Family 15, Model 37, Stepping 1) > Linux 64bit, gcc version 3.4.6 > 83338 bits (25088 digits) > Library Time1 Time2 > ---------- --------- --------- > GMP 4.3.0 1m35.091s 1m34.815s > MPIR 1.1.0 1m36.480s 1m35.923s > MPIR 1.0.0 1m37.501s 1m36.857s > GMP 4.2.4 2m56.352s 2m55.702s > > Jeff. > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "mpir-devel" group. To post to this group, send email to mpir-devel@googlegroups.com To unsubscribe from this group, send email to mpir-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/mpir-devel?hl=en -~----------~----~----~----~------~----~------~--~---
