[hashcash] Re: benchmark
- From: Atom 'Smasher' <atom@xxxxxxxxxxxxxx>
- To: hashcash@xxxxxxxxxxxxx
- Date: Mon, 13 Sep 2004 04:35:59 -0400 (EDT)
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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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