[hashcash] Re: benchmark

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On Mon, 13 Sep 2004, Adam Back wrote:

Does compiling with make x86 work on BSD? 
=========

that doesn't get far, at all... pretty much the same error with gmake...


# make x86
make "CFLAGS=-DREGEXP_POSIX -O3 -funroll-loops -march=i386 -mcpu=pentium -mmmx  
-D_REENTRANT -D_THREAD_SAFE -fPIC " build
cc -DREGEXP_POSIX -O3 -funroll-loops -march=i386 -mcpu=pentium -mmmx  
-D_REENTRANT -D_THREAD_SAFE -fPIC  -c hashcash.c
cc1: Invalid option `mmx'
*** Error code 1

Stop in /usr/home/alpha/dmz/hashcash-1.08.
*** Error code 1

Stop in /usr/home/alpha/dmz/hashcash-1.08.

~~~~~~~~~~~~~~~~~~~~~~~

i can't help notice that it specifies "-mcpu=pentium". does it matter that i'm using an amd chip?

might it make a difference if i enable this in my kernel?
        # CPU_ENABLE_SSE enables SSE/MMX2 instructions support.
i should probably have that enabled anyway...

looking for "mmx" in dmesg gives me this (does this help?):

$ dmesg | egrep -iB2 mmx
CPU: AMD Duron(tm) Processor (1194.92-MHz 686-class CPU)
  Origin = "AuthenticAMD"  Id = 0x671  Stepping = 1
  
Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>



That will enable the MMX assembler code and be a fair bit faster. 
=============

nonetheless, i'm impressed with the improved speed since 1.02.


    ...atom

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