Date: Thu, 6 Sep 2012 08:19:11 -0700 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Roman Divacky <rdivacky@freebsd.org> Cc: Garrett Cooper <yanegomi@gmail.com>, Dimitry Andric <dimitry@andric.com>, freebsd-current@freebsd.org Subject: Re: Compiler performance tests on FreeBSD 10.0-CURRENT Message-ID: <20120906151911.GA7967@troutmask.apl.washington.edu> In-Reply-To: <20120906084312.GA13223@freebsd.org> References: <5046670C.6050500@andric.com> <20120904214344.GA17723@troutmask.apl.washington.edu> <504679CB.90204@andric.com> <20120904221413.GA19395@troutmask.apl.washington.edu> <CAGH67wTQavfh9ExsjypnCjw4yrV2RpdUUjxAD2kaZy-PiDocHA@mail.gmail.com> <50471BEE.6030708@andric.com> <20120905221310.GA97847@troutmask.apl.washington.edu> <20120906084312.GA13223@freebsd.org>
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On Thu, Sep 06, 2012 at 10:43:12AM +0200, Roman Divacky wrote: > On Wed, Sep 05, 2012 at 03:13:11PM -0700, Steve Kargl wrote: > > > > Compiling libm on > > > > CPU: AMD Opteron(tm) Processor 248 (2192.01-MHz K8-class CPU) > > Origin = "AuthenticAMD" Id = 0xf5a Family = f Model = 5 Stepping = 10 > > Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,\ > > MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2> > > AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow!+,3DNow!> > > > > with default CFLAGS (ie., -O2 -pipe) and -march=opteron. > > Was this compiled as amd64 or i386? Also, can you send me the test case? > So that we can explore the difference. The working theory now is SSE vs FPU > mathematics, but it would be nice to see the testcase. > > Thank you, roman > It was compiled on amd64. I can do the same testing on i386 this weekend. The testcase is not a self-contained piece of code. It uses parts of my floating point test frame. Putting together the testcase may take a few hours. -- Steve
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