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theethicalatheist
n00b
Joined: 11 Apr 2006
Posts: 68
Location: University of Massachusetts Lowell
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 Posted: Wed May 24, 2006 7:14 am Post subject: Processor extension questions |
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I'm running Gentoo on a Pentium 4 Willamette, with 'pentium4' specified in my make.conf file with MMX, SSE, and SSE2. My first question is that MPlayer says my CPU supports MMX2, but that it is disabled. Now, if my CPU supports MMX2, than why doesn't it tell me in 'cat /proc/cpuinfo'? I was also hoping someone could tell me what 'MMX EXT' is. In VLC, under the Preferences/Advanced/CPU Features section, it has a checkbox next to it, and I was wondering if I should enable it.
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didymos
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Joined: 10 Oct 2005
Posts: 4798
Location: California
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| Posted: Wed May 24, 2006 8:33 am Post subject: |
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What does /proc/cpuinfo info say? You won't see mmx there. You'll see sse, sse2. If it has sse3, you'll see pni (Prescott New Instructions).
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theethicalatheist
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Joined: 11 Apr 2006
Posts: 68
Location: University of Massachusetts Lowell
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| Posted: Wed May 24, 2006 8:39 am Post subject: |
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| didymos wrote: | | What does /proc/cpuinfo info say? You won't see mmx there. You'll see sse, sse2. If it has sse3, you'll see pni (Prescott New Instructions). |
| Code: | processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 1
model name : Intel(R) Pentium(R) 4 CPU 1.80GHz
stepping : 2
cpu MHz : 1793.730
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips : 3593.36 |
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