1 9 9 8 , ▁the ▁Blue ▁Mountain ▁was ▁de comm ission ed ▁on ▁Monday , ▁November ▁ 8 , ▁ 2 0 0 4 ▁at ▁ 8 ▁am , ▁and ▁was ▁replaced ▁by ▁the ▁AS CI ▁Q , ▁Light ning , ▁and ▁Q SC ▁super comput ers . ▁ ▁References ▁ ▁External ▁links ▁ ▁https :// web . archive . org / web / 2 0 1 2 0 9 2 5 1 8 5 8 4 6 / http :// www . lan l . gov / org s / pa / ph otos / comput ing . html ▁ ▁http :// library . lan l . gov / cgi - bin / get file ? 0 0 4 1 8 7 5 2 . pdf ▁ ▁Category : M IP S ▁architecture ▁Category : One - of - a - kind ▁computers ▁Category : SG I ▁super comput ers <0x0A> </s> ▁Pierre ▁Louis ▁De ff ès ▁( 2 5 ▁July ▁ 1 8 1 9 ▁– ▁ 2 8 ▁May ▁ 1 9 0 0 ) ▁was ▁a ▁ 1 9 th - century ▁French ▁composer . ▁He ▁excel led ▁as ▁a ▁composer ▁of ▁both ▁oper as ▁and ▁large - scale ▁sacred ▁music . ▁ ▁Life ▁De ff ès ▁was ▁born ▁in ▁Toul ouse ▁and ▁admitted ▁to ▁the ▁Paris ▁Conserv atory ▁in ▁ 1 8 3 9 , ▁where ▁he ▁studied ▁with ▁From ental ▁Hal év y ▁and ▁Henri ▁Mont an ▁Bert on ▁( com position ), ▁François ▁B az