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** [[User:notting|Bill Nottingham]] Once a set has been decided on, this should be pretty trivial. With respect to the proposal, 'grep sse2 /proc/cpuinfo' should work. | ** [[User:notting|Bill Nottingham]] Once a set has been decided on, this should be pretty trivial. With respect to the proposal, 'grep sse2 /proc/cpuinfo' should work. | ||
* [[User:Bruno|Bruno]]: Is there a way to tell which binaries actually use SSE2 instructions so that a secondary arch targeting athlons would be able to inherit safe binaries from the i686+ arch? | * [[User:Bruno|Bruno]]: Is there a way to tell which binaries actually use SSE2 instructions so that a secondary arch targeting athlons would be able to inherit safe binaries from the i686+ arch? | ||
** [[User:notting|Bill Nottingham]] This part of the change was reverted. | |||
* [[User:Ngompa|Neal Gompa]]: Pentium II and lower do not support SSE or SSE2. Pentium III only supports SSE, not SSE2. Pentium 4 supports SSE2 and SSE3. However, all Pentium chips (Pentium Pro and higher) support i686 + MMX. If we wanted to move to i686, a secondary arch offering no SSE2 would be a good idea. | * [[User:Ngompa|Neal Gompa]]: Pentium II and lower do not support SSE or SSE2. Pentium III only supports SSE, not SSE2. Pentium 4 supports SSE2 and SSE3. However, all Pentium chips (Pentium Pro and higher) support i686 + MMX. If we wanted to move to i686, a secondary arch offering no SSE2 would be a good idea. | ||
** [[User:akostadi|Aleksandar Kostadinov]]: I would second that SSE2 is a overkill. Why is not MMX enough? In fact I own an Athlon desktop that is pretty much enough for my work and I would have still worked on that if other factors wouldn't force me to entirely use my laptop (that's not much faster btw). | ** [[User:akostadi|Aleksandar Kostadinov]]: I would second that SSE2 is a overkill. Why is not MMX enough? In fact I own an Athlon desktop that is pretty much enough for my work and I would have still worked on that if other factors wouldn't force me to entirely use my laptop (that's not much faster btw). | ||
** [[User:notting|Bill Nottingham]] This part of the change was reverted. | |||
* [[User:Michaelo|Michael Osborne]]: This change will break Fedora on Via C3 processors. These are used quite a bit for mini-itx boards for LTSP terminals as they don't require active cooling. A lot of breakage for little gain AFAICS. | * [[User:Michaelo|Michael Osborne]]: This change will break Fedora on Via C3 processors. These are used quite a bit for mini-itx boards for LTSP terminals as they don't require active cooling. A lot of breakage for little gain AFAICS. | ||
* [[User:billmcgonigle|Bill McGonigle]]: There's an extensive thread on this on fedora-devel. Many questioned the wisdom of abandoning so much hardware for a meager 1-2% performance gain. | * [[User:billmcgonigle|Bill McGonigle]]: There's an extensive thread on this on fedora-devel. Many questioned the wisdom of abandoning so much hardware for a meager 1-2% performance gain. | ||
Revision as of 15:08, 20 August 2009
- Dmalcolm 18:02, 15 June 2009 (UTC) If a Fedora user wants to verify that a CPU will work with F12, how should he/she query /proc/cpuinfo ? (and does smolt have any of this data?) Thanks
- Bill Nottingham Once a set has been decided on, this should be pretty trivial. With respect to the proposal, 'grep sse2 /proc/cpuinfo' should work.
- Bruno: Is there a way to tell which binaries actually use SSE2 instructions so that a secondary arch targeting athlons would be able to inherit safe binaries from the i686+ arch?
- Bill Nottingham This part of the change was reverted.
- Neal Gompa: Pentium II and lower do not support SSE or SSE2. Pentium III only supports SSE, not SSE2. Pentium 4 supports SSE2 and SSE3. However, all Pentium chips (Pentium Pro and higher) support i686 + MMX. If we wanted to move to i686, a secondary arch offering no SSE2 would be a good idea.
- Aleksandar Kostadinov: I would second that SSE2 is a overkill. Why is not MMX enough? In fact I own an Athlon desktop that is pretty much enough for my work and I would have still worked on that if other factors wouldn't force me to entirely use my laptop (that's not much faster btw).
- Bill Nottingham This part of the change was reverted.
- Michael Osborne: This change will break Fedora on Via C3 processors. These are used quite a bit for mini-itx boards for LTSP terminals as they don't require active cooling. A lot of breakage for little gain AFAICS.
- Bill McGonigle: There's an extensive thread on this on fedora-devel. Many questioned the wisdom of abandoning so much hardware for a meager 1-2% performance gain.