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On 15/04/14 03:11, Walter Dnes wrote: |
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[snip] |
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> model name : AMD Athlon(tm) II P320 Dual-Core Processor |
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This indicates a 64-bit processor. |
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[snip] |
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> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a 3dnowprefetch osvw ibs skinit wdt nodeid_msr hw_pstate npt lbrv svm_lock nrip_save |
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All these look plausible for an Athlon II. |
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[snip] |
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> * In "make menuconfig", I'm not sure which of 2 CPU options to select in |
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> Processor type and features ---> |
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> Processor family (*****************) ---> |
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> |
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> ( ) Athlon/Duron/K7 |
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> ( ) Opteron/Athlon64/Hammer/K8 |
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> |
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> Which one do I go with? |
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The second. |
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K7 = 32-bit Athlon, etc. |
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K8 = 64-bit Athlon II, etc. |
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> * I believe that "pni" == "sse3" (with *TWO* "s") Is that correct? |
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Yes: PNI = Prescott New Instructions, which became known as SSE3. |
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> * The cpuinfo output shows "sse4a". Is that the same as the "sse4_1" |
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> USE flag, or is it different |
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It is different. See <http://en.wikipedia.org/wiki/SSE4> for details. |
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The SSE4a instructions are specific to 64-bit AMD processors. AFAIAA, |
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there is no USE flag to enable them under Gentoo. |
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If you specify -march=k8 in your CFLAGS, you should get pretty decent |
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object code from GCC. |
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-- |
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Regards, |
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Dave [RLU #314465] |
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dwnoon@××××××××.com (David W Noon) |
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