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houmei
April 19, 2018
Technology
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ぼくのかんがえたさいきょうCPU 2018 DATA
houmei
April 19, 2018
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Transcript
΅͘ͷ͔Μ͕͑ͨ ͍͖͞ΐ͏CPU 2018.4.19 @houmei DATA 184݄19༵
༰ • ΅͘ͷ͔Μ͕͍͖͑ͨ͞ΐ͏CPUͷղઆ • σʔλܗࣜʹ͍ͭͯ twitter : @houmei blog :
ԼੈքౝͷܭࢉػΑ· 184݄19༵
σʔλαΠζ ɾ̎ⁿόΠτ୯Ґ(n≧0)ɺ1όΠτ=8bit 7 0 15 31 63 bit 184݄19༵
ුಈখܕ ɾIEEE754-2008४ڌ 0 15 31 63 bit FP16 FP32 FP64
127 FP128 184݄19༵
ेਐුಈখܕ ɾIEEE754-2008४ڌ 0 31 63 bit DP32 DP64 127 DP128
184݄19༵
ͦͷଞͷσʔλܕ • BCDܕ(≠ेਐුಈখܕ) • จࣈྻ • ಛघͳුಈখܕʢػցֶश͚ʣ • Ҏ্ະݕ౼ 184݄19༵
Ϩʔϯ • σʔλશମΛ̎ⁿόΠτ୯ҐͰ෯ʹׂ͢Δ • ׂͨ۠͠ըϨʔϯͱݺͿ • Ϩʔϯ͕ͻͱ͔ͭ͠ͳ͍ͷεΧϥͱݺͿ • Ϩʔϯͯ͢ಉ͡ܕ FP32
FP32 FP32 FP32 lane 0 lane 1 lane 2 lane 3 0 31 63 95 127 184݄19༵
ܕϨʔϯͷѻ͍ • ϩʔυετΞ໋ྩͰσʔλͷαΠζͷΈѻ͏ • ϩʔυ͞Εͨ࣌Ͱܕͱͯ͠ѻ͏ • ුಈখܕϨʔϯ໋ྩͰ໌ʹ༩͑Δ • σʔλαΠζ͕҉ͷʹมΘΔ͜ͱͳ͍ 184݄19༵
ܕΛѻ͏ࢉज़ԋࢉ໋ྩ • σʔλܕʹΑΓಈ࡞͕มΘΔͷࢉज़ԋࢉ໋ྩ • ුಈখ↔ͷܕมࢉज़ԋࢉ໋ྩͰߦ͏ • ཧԋࢉ/Ϗοτԋࢉܕʹؔͳ͘࡞༻͢Δ • ৄࡉผ్ 184݄19༵
ɹ ͭͮ͘ ΅͘ͷ͔Μ͕͍͖͑ͨ͞ΐ͏CPU 184݄19༵