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2006 Apr 08
0
Jupiter Direct Subscription Confirmation Needed
...te (TEXT) Developer.com Update (TEXT) eSecurity Planet (TEXT) Enterprise Networking Planet (TEXT) Gamelan Java Update (TEXT) HTML Goodies to Go (TEXT) Intranet Journal Update (TEXT) JARS Java Update (TEXT) Enterprise Storage Forum (TEXT) OpenNetworksToday (TEXT) OpenSource IT Industry Update (TEXT) SysOpt Tech Notes (TEXT) VirtualDr (TEXT) Jupiter Direct (TEXT) To confirm your subscription to the above e-mail newsletter, simply reply to this message. If multiple newsletters are listed, replying to this mail will confirm your subscription for all. By confirming your subscription you agree to the...
2004 Aug 06
2
[PATCH] Make SSE Run Time option. Add Win32 SSE code
...h you have to query for. On the Atholon XP 2400+ that we have here, that code does not detect the presence of that when run under Windows. The same code on a Pentium 4 detects it just fine. Here is an article which describes the K8 (Opteron and Atholon64) as including the XMM registers: http://sysopt.earthweb.com/articles/k8/index2.html . All the stuff I could google seems to indicate that XMM register support is not included in the current Atholon XP series or below. With any machine you are not guaranteed to get support for the XMM registers (the 128 bit wide ones), since the OS has to su...
2004 Aug 06
0
[PATCH] Make SSE Run Time option. Add Win32 SSE code
...ay. Now if you really want to do something about AMD processors (mainly pre-XP Athlons), a 3DNow! implementation would give you a great speedup (probably even better than SSE). > Here is an article which describes the K8 (Opteron and Atholon64) as > including the XMM registers: > http://sysopt.earthweb.com/articles/k8/index2.html . All the stuff I could > google seems to indicate that XMM register support is not included in the > current Atholon XP series or below. Believe me, it is. I can even tell you that the floating point SSE implementation in the Athlon XP is faster than t...
2004 Aug 06
2
[PATCH] Make SSE Run Time option. Add Win32 SSE code
Jean-Marc, There is a big difference between SSE and SSEFP. The SSEFP means that the CPU supports the xmm registers. All Intel chips with SSE support do, however no current 32 bit AMD chips support the XMM registers. They will support the SSE instructions but not those registers. You are right about the SSE2 not being used. The AMD Opterons are the first AMD CPU's which support